Crich Publications 1983-2001

• New and Improved Methods for the Radical Decarboxylation of Acids D. H. R. Barton, D. Crich and W. B. Motherwell, J. Chem. Soc., Chem. Commun. 1983, 939-941.
• A Practical Alternative to the Hunsdiecker Reaction D. H. R. Barton, D. Crich and W. B. Motherwell, Tetrahedron Lett., 1983, 24, 4979-4982.
• Conversion of Aliphatic and Alicyclic Carboxylic Acids into nor-Hydroperoxides, nor-Alcohols and nor-Oxo Derivatives using Radical Chemistry D. H. R. Barton, D. Crich and W. B. Motherwell, J. Chem. Soc., Chem. Commun., 1984, 242-244.
• Formation of Carbon-Carbon Bonds with Radicals derived from the Esters of Thiohydroxamic Acids D. H. R. Barton, D. Crich and G. Kretzschmar, Tetrahedron Lett., 1984, 25, 1055-1058.
• On the Mechanism of Reduction of Dithiocarbonates with Tributylstannane D. H. R. Barton, D. Crich, A. Lobberding and S. Z. Zard, J. Chem. Soc., Chem. Commun., 1985, 646-647.
• The Invention of New Radical Chain Reactions. Part VIII. Radical Chemistry of Thiohydroxamic Esters; A New Method for the Generation of Carbon Radicals from Carboxylic Acids D. H. R. Barton, D. Crich and W. B. Motherwell, Tetrahedron, 1985, 41, 3901-3924.
• The Free Radical Chemistry of Carboxylic Esters of 2-Selenopyridine-N-Oxide; A Convenient Synthesis of (L)-Vinylglycine D. H. R. Barton, D. Crich, Y. Herve, P. Potier and J. Thierry, Tetrahedron, 1985, 41, 4347-4357.
• Oxidation of Olefins With Pyridine Seleninic Anhydride D. H. R. Barton and D. Crich, Tetrahedron, 1985, 41, 4359-4364.
• On the Mechanism of the Decarboxylative Rearrangement of Thiohydroxamic Esters D. H. R. Barton, D. Crich and P. Potier, Tetrahedron Lett., 1985, 26, 5943-5946.
• The Invention of New Radical Chain Reactions. Part IX. Further Radical Chemistry of Thiodyroxamic Esters; Formation of Carbon-Carbon Bonds D. H. R. Barton, D. Crich and G. Kretzschmar, J. Chem. Soc., Perkin Trans. 1, 1986, 39-53.
• On the Mechanism of the Deoxygenation of Secondary Alcohols by the Reduction of their Methyl Xanthates by Tin Hydrides D. H. R. Barton, D. Crich, A. Lobberding and S. Z. Zard, Tetrahedron, 1986, 42, 2329-2338.
• The Invention of New Radical Chain Reactions. Part XI. A New Method for the Generation of tert Radicals from tert Alcohols D. H. R. Barton and D. Crich, J. Chem. Soc., Perkin Trans. 1, 1986, 1603-1611.
• The Invention of Radical Chain Reactions. Part XII. Improved Methods for the Addition of Carbon Radicals to Substituted Allylic Groups D. H. R. Barton and D. Crich, J. Chem. Soc., Perkin Trans. 1, 1986, 1613-1619.
• On the Mechanism of Cleavage of the Cholesterol Side Chain by the Gif System D. H. R. Barton, J. Boivin, D. Crich and C. H. Hill, J. Chem. Soc., Perkin Trans. 1, 1986, 1805-1808.
• A New Method for the Synthesis of tert-Alkyl Chlorides from tert-Alcohols D. Crich and S. M. Fortt, Synthesis, 1987, 35-37.
• The cis-5-Cyclooctenyl Radical is Reluctant to Rearrange A. J. Bloodworth, D. Crich and T. Melvin, J. Chem. Soc., Chem. Commun., 1987, 786-788.
• O-Acyl Thiohydroxamates: New and Versatile Sources of Alkyl Radicals for Use in Organic Synthesis D. Crich, Aldrichimica Acta, 1987, 20, 35-43.
• On the Effect of Ring Size in the Cyclization of Carbonyl and Vinyl Radicals onto Alkynes D. Crich and S. M. Fortt, Tetrahedron Lett., 1987, 28, 2895-2898.
• Free Radical Reactions D. Crich in 'Annual Reports B of the Chemical Society,' 1986, 83, 65-76.
• Stereoselectivity in Free Radical Reactions D. Crich and J. W. Davies, Tetrahedron Lett., 1987, 28, 4205-4208.
• Some Studies on syn-Elimination Reactions D. Crich and L. B. L. Lim, J. Chem. Res., 1987, 353-353.

• Some Studies on 6,7-Unsaturated Carbonyl Radical Cyclizations D. Crich and S. M. Fortt, Tetrahedron Lett., 1988, 29, 2585-2588.

• Preparation of a-Amino Acids by Radical Addition to Dehydroalanine Derivatives D. Crich, J. W. Davies, G. Negron and L. Quintero, J. Chem. Res., 1988, 140-141.

• Preparation and Reactions of Some Cyclic Orthoester Derivatives D. Crich and T. J. Ritchie, Tetrahedron, 1988, 44, 2319-2328.

• Free Radical Reactions D. Crich in 'Annual Reports B of the Chemical Society,' 1987, 84, 81-91.

• A Concise Synthesis of 3-Deoxy-2-O-methyl-4,5,7-tri-O-benzyl-D-arabino-heptulosonic Acid and Related Compounds from 3,4,6-Tri-O-benzyl-D-glucal D. Crich and T. J. Ritchie, J. Chem. Soc., Chem. Commun., 1988, 985-986.

• Some Studies on Carbonyl Radical Cyclizations and on the Synthesis of 2-Deoxy-b-glucosides by Stereoselective Radical Reactions D. Crich, S. M. Fortt and T. J. Ritchie in 'Free Radicals in Synthesis and Biology,' Ed. F. Minisci, Kluwer, Dordrecht, 1989, 135-143.

• Stereoselective Free Radical Reactions in the Preparation of 2-Deoxy-b-D-glucosides D. Crich and T. J. Ritchie, J. Chem. Soc., Chem. Commun., 1988, 1461-1463.

• On the Use of S-(4-Alkenyl)-Dithiocarbonates as Mechanistic Probes in the Barton-McCombie Radical Deoxygenation Reaction D. Crich, Tetrahedron Lett., 1988, 29, 5805-5806.

• Carbonyl Radical Cyclizations: Preparation of Some Heterocyclic Ketones D. Crich, K. A. Eustace and T. J. Ritchie, Heterocycles, 1989, 28, 67-70.

• Some Observations on the Mechanism of the Mitsunobu Reaction D. Crich, H. Dyker and R. J. Harris, J. Org. Chem., 1989, 54, 257-259.

• Dichotomous Reaction Pathways in the Reaction of Triarylphosphine Oxides with Meerwein's Salt D. Crich and H. Dyker, Tetrahedron Lett., 1989, 54, 475-476.

• Preparation of 2-Deoxy-b-D-lyxo-hexosides (2-Deoxy-b-galactosides) D. Crich and T. J. Ritchie, Carbohydr. Res., 1989, 190, c3-c6.

• A Facile Effective Example of Organic Photochemistry T. Brown, C. J. Cooksey, D. Crich and A. Dronsfield, J. Chem. Ed., 1990, 67, 434-435.

• Radical Chemistry Associated with the Thiocarbonyl Group D. Crich and L. Quintero, Chem. Rev., 1989, 89, 1413-1432.

• Free Radical Reactions D. Crich in 'Annual Reports B of the Chemical Society,' 1988, 85, 71-82.

• Reaction of Tryptophan Derivatives with Phenylsulphenyl Chloride and Phenylselenenyl Bromide D. Crich and J. W. Davies, Tetrahedron Lett., 1989, 30, 4307-4308.

• Free Radical Addition to Di-and Tripeptides containing Dehydroalanine Residues D. Crich and J. W. Davies, Tetrahedron, 1989, 45, 5641-5654.

• Silyl Migration and Formation of an Anhydro Derivative on Attempted Benzylation of 6-O-Tosyl-3-O-t-butyldimethylsilyl-D-glucal D. Crich and T. J. Ritchie, Carbohydr. Res., 1990, 197, 324-326.

• Synthesis of a 1a,25-Dihydroxyvitamin D3 A Ring Model D. Batty, D. Crich and S. M. Fortt, J. Chem. Soc., Chem. Commun., 1989, 1366-1368.

• An Improved Procedure for the Formation of Se-Phenyl Selenoesters D. Batty and D. Crich, Synthesis, 1990, 273-275.

• Asymmetric Synthesis of a-Alkylated Tryptophan Derivatives D. Crich and J. W. Davies, J. Chem. Soc., Chem. Commun., 1989, 1418-1419.

• Acyl Radical Cyclizations in Synthesis. Part 1. Substituent Effects on the Mode and Efficiency of Cyclization of 6-Heptenoyl Radicals D. Crich and S. M. Fortt, Tetrahedron, 1989, 45, 6581-6598.

• Diastereoselective Free Radical Reactions. Part 1. Preparation of 2-Deoxy-b-glycosides by Synthesis and Reductive Decarboxylation of 3-Deoxyulosonic Acid Glycosides D. Crich and T. J. Ritchie, J. Chem. Soc., Perkin Trans. 1, 1990, 945-954.

• Acyl Radical Cyclizations in Synthesis. Part 2. Further Substituent Effects on the Mode and Efficiency of Cyclization of 6-Heptenoyl Radicals D. Crich, K. A. Eustace, S. M. Fortt and T. J. Ritchie, Tetrahedron, 1990, 46, 2135-2148.

• b-Trimethylsilylethoxymethyl Chloride as a Formaldehyde Equivalent in Aldol Type Reactions D. Crich and L. B. L. Lim, SynLett., 1990, 1, 117-118.

• Acyl Radical Cyclizations in Synthesis. Part 3. Synthesis of (±)-trans-2-Methylene-3,5-bis(t-butyldimethylsiloxy)-cyclohexanone an 'A' Ring Model for 1a,25-Dihydroxyvitamin DD. Batty, D. Crich and S. M. Fortt, J. Chem. Soc., Perkin Trans. 1, 1990, 2875-2879.

• Synthesis of 2-Deoxy-b-C-Glucosides by Diastereoselective Hydrogen Atom Transfer D. Crich and L. B. L. Lim, Tetrahedron Lett., 1990, 31, 1897-1900.
• Cobaloximes as Vehicles for College Teaching T. M. Brown, C. J. Cooksey, D. Crich and A. Dronsfield, J. Chem. Ed., 1991, 67, 973-974.

• Chemistry of the cis-Cyclo-oct-4-en-1-yl Radical including the Preparation of 18O2-Labelled cis-Cyclo-oct-4-en-1-yl Hydroperoxide A. J. Bloodworth, D. Crich and T. Melvin, J. Chem. Soc., Perkin Trans. 1, 1990, 2957-2961.

• Enantiospecific Synthesis with Amino Acids. Part 1. Tryptophan as a Chiron for the Synthesis of a-Substituted Tryptophan Derivatives G. T. Bourne, D. Crich, J. W. Davies and D. C. Horwell, J. Chem. Soc., Perkin Trans. 1, 1991, 1693-1699.

• Diastereoselective Radical Reactions: b-Face Selective Quenching of the 1,2-Isopropylidene-3,4,6-tri-O-benzyl-D-glucopyranos-1-yl Radical D. Crich and L. B. L. Lim, Tetrahedron Lett., 1991, 2565-2568.

• Diastereoselective Free Radical Reactions. Part 2. Synthesis of 2-Deoxy-b-C-pyranosides by Diastereoselective Hydrogen Atom Transfer D. Crich and L. B. L. Lim, J. Chem. Soc., Perkin Trans. 1, 1991, 2205-2208.

• Diastereoselective Free Radical Reactions. Part 3. The Methyl Glucopyranos-1-yl and the 1,2-Isopropylideneglucopyranos-1-yl Radicals: Conformational Effects on Diastereoselectivity D. Crich and L. B. L. Lim, J. Chem. Soc., Perkin Trans. 1, 1991, 2209-2214.
• A Radical Cyclization Approach to 1a,25-Dihydroxyvitamin D3D. Batty and D. Crich, J. Chem. Soc., Perkin Trans. 1, 1991, 2894-2895.

• The Kolbe-Schmitt Reaction Revisited T. M. Brown, C. J. Cooksey, D. Crich and A. T. Dronsfield, Ed. Chem. 1992, 22.

• Preparation, Isolation and X-ray Crystallographic Structure Determination of a Stable, Crystalline Carbonic Anhydride of an N-Protected a-Amino Acid C-O. Chan, C. J. Cooksey and D. Crich, J. Chem. Soc., Perkin Trans. 1, 1992, 777-780.

• On the Use of Propargyl Bromide as a Reagent for the Introduction of the Pyruvate Moiety C. Chen and D. Crich, J. Chem. Soc., Chem. Commun., 1991, 1289-1290.

• The Hunsdiecker and Related Reactions D. Crich, in 'Comprehensive Organic Synthesis,' Ed. B. M. Trost, I. Fleming and S. V. Ley, Pergamon Press, Oxford, 1991, 7, 717-734.

• An Acyl Radical Initiated Tandem 7-endo/5-exo Radical Cyclization Approach to Enantiomerically Pure Bicyclo[5.3.0]decan-2-ones D. Batty and D. Crich, Tetrahedron Lett., 1992, 33, 875-878.

• Asymmetric Synthesis of a 1a,25-Dihydroxyvitamin D3 A-Ring Synthon C. Chen and D. Crich, Tetrahedron Lett., 1992, 33, 1945-1948.

• Enantiospecific Synthesis of Amino Acids: Preparation of (R) and (S)-a-Methylaspartic Acid from (S)-Tryptophan C-O. Chan, D. Crich and S. Natarajan, Tetrahedron Lett., 1992, 33, 3405-3408.
• The Chemistry of Acyl Tellurides: Generation and Trapping of Acyl Radicals Including Aryltellurium Group Transfer C. Chen and D. Crich, J. Am. Chem. Soc., 1992, 114, 8313-8314.
• Enantiospecific Synthesis with Amino Acids. 2. A Chemical and Computational Investigation of Cyclic Tryptophan Tautomers C-O. Chan, D. Crich, J. W. Davies, S. Natarajan and J. G. Vinter, J. Chem. Soc., Perkin Trans. 2, 1992, 2233-2240.
• Conformationally Restricted Amino Acids: Diastereoselective Substitution at the b-Position of Tryptophan M. Bruncko and D. Crich, Tetrahedron Lett., 1992, 33, 6251-6254.

• Homolytic Processes at Sulfur in Synthesis D. Crich, in 'Organosulfur Chemistry', Ed. P. Page, Academic Press, 1995, vol. 1, 49-88.

• Acyl Radical Cyclizations in Synthesis. Part 4. Tandem Processes: The 7-endo/5-exo Serial Cyclization Approach to Enantiomerically Pure Bicyclo[5.3.0]decan-2-ones D. Batty and D. Crich, J. Chem. Soc., Perkin Trans. 1, 1992, 3193-3204.
  71. Acyl Radical Cyclizations in Synthesis. Part 5. Further Tandem Processes: Formation of an a-Methylenecyclohexanone by a Cyclization-Fragmentation-Hydrogen Abstraction Sequence D. Batty and D. Crich, J. Chem. Soc., Perkin Trans. 1, 1992, 3205-3209.

• The b-Phosphatoxyalkyl Radical Rearrangement D. Crich and Q. Yao, J. Am. Chem. Soc., 1993, 115, 1165-1166.
• The Free Radical Chemistry of the Acyl Tellurides: Mechanistic Studies and Synthetic Applications C. Chen and D. Crich, Tetrahedron Lett., 1993, 34, 1545-1548.
• Sequential Diastereoselective Free Radical Reactions: Synthesis of an Advanced Olivomycin A C-D Disaccharide F. Hermann and D. Crich, Tetrahedron Lett., 1993, 34, 3385-3388.
• Asymmetric Synthesis of a-Alkylated Derivatives of 5-Hydroxytryptophan D. Crich and L. B. L. Lim, Heterocycles, 1993, 36, 1199-1204.

• Functionalization at C-3a of Tryptophan derived Hexahydro[2,3b]pyrroloindoles M. Bruncko, D. Crich and R. Samy, Heterocycles, 1993, 36, 1735-1738.
• The Cyclization Route to the Calcitriol A-ring: A Formal Synthesis of (+)-1a,25-Dihydroxy-vitamin D3C. Chen and D. Crich, Tetrahedron, 1993, 49, 7943-7954.
• The b-Nitroxyalkyl and b-Sulfonatoxyalkyl Radical Rearrangements D. Crich and G. Filzen, Tetrahedron Lett., 1993, 34, 3225-3228.
• A New C-C Bond Forming Free Radical Rearrangement D. Crich and Q. Yao, J. Chem. Soc., Chem. Commun., 1993, 1265-1267.

• The b-(Phosphatoxy)alkyl Radical Rearrangement. A Stereochemical Probe of Mechanism, D. Crich and Q. Yao, Tetrahedron Lett., 1993, 34, 5677-5680.

• Generation and Trapping of Benzyl Radicals from Benzyl Iodides by Cobaloxime Mediated Iodine Atom Abstraction Reactions, T. M. Brown, C. J. Cooksey, D. Crich, A. T. Dronsfield and R. Ellis, J. Chem. Soc., Perkin Trans. 1, 1993, 2131-2136.

• The Chemistry of Cyclic Tautomers of Tryptophan: Highly Diastereoselective Aldol Condensations, D. Crich, I. Pastrama-Gress, J. Sandoval-Ramirez and L. Quintero-Cortes, Heterocycles, 1994, 38, 719-724.

• Concise Synthesis of a Taxol A-Ring Synthon: Formation of a 1,2-Alkylidene Linkage via Acetylene Chemistry, D. Crich and J. Z. Crich, Tetrahedron Lett., 1994, 35, 2469-2472.

• The b-(Phosphatoxy)-alkyl and b-(Acyloxy)-alkyl Radical Rearrangements: Evidence for Non-Dissociative Mechanisms, D. Crich and Q. Yao, J. Am. Chem. Soc., 1994, 116, 2631-2632.

• Cyclic Tautomers of Tryptophan: Enantio- and Diastereoselective Synthesis of b-and a,b-Disubstituted Derivatives of Tryptophan, M. Bruncko and D. Crich, J. Org. Chem., 1994, 59, 4239-4249.
• The Photoinduced Free Radical Chemistry of the Acyl Tellurides: Generation, Inter- and Intramolecular Trapping, and ESR Spectroscopic Identification of Acyl Radicals, D. Crich, C. Chen, J.-T. Hwang, H. Yuan, A. Papadatos and R. I. Walter, J. Am. Chem. Soc., 1994, 116, 8937-8951.
• Antiovulatory Antagonists of LHRH Related to Antide, G. Flouret, Z. S. Arnold, T. Majewski, N. H. Petousis, K. Mahan, F. Farooqui, K. A. Blum, D. Konopinska, S. Natarajan and D. Crich, J. Pept. Sci., 1995, 1, 89-105.
• Chemistry of Cyclic Tautomers of Tryptophan: Formation of a Quaternary Center at C3a and Total Synthesis of the Marine Alkaloid (+)-(ent)-Debromoflustramine B, M. Bruncko, D. Crich and R. Samy, J. Org. Chem., 1994, 59, 5543-5549.
• Intramolecular Hydrogen Atom Abstraction in Carbohydrates and Nucleosides: Inversion of a- to b-Mannopyranosides and Generation of Thymidine C-4' Radicals, J. Brunckova, D. Crich and Q. Yao, Tetrahedron Lett., 1994, 35, 6619-6622.
• Mechanism of the Rearrangement of 2-(Vinyloxy)alkyl to 4-Ketobutyl Radicals, D. Crich and Q. Yao, Tetrahedron, 1994, 50, 12305-12312.
• Stereocontrolled Formation of Quaternary Carbon Centers by Conjugate Addition of Lithium Enolates of Dioxanones to b-Bromoacrylates and b-Bromovinyl Sulfones: Dependence of Stereoselectivity on Alkene Geometry, M. Bruncko and D. Crich, J. Org. Chem., 1994, 59, 7921-7923.
• Inhibition of Radical Rearrangements in Stannane Mediated Radical Reduction by Catalytic Quantities of Diphenyl Diselenide. An Example of Polarity Reversal Catalysis, D. Crich and Q. Yao, J. Org. Chem., 1995, 60, 84-88.
• Synthesis of a Highly Functionalized Taxol AB-Ring System. Formation of the 8-Membered Ring by an Efficient 8-exo-tet Alkylation of an a-Sulfonyl Anion, D. Crich and S. Natarajan, J. Chem. Soc., Chem. Commun., 1995, 85-86.
• Conformational Analysis of Substituted Hexahydropyrrolo[2,3-b]indoles and Related Systems. An Unusual Example of Hindered Rotation about Sulfonamide S-N Bonds. An X-ray Crystallographic and NMR Study, D. Crich, M. Bruncko, S. Natarajan, B. K. Teo, D. A. Tocher, Tetrahedron, 1995, 51, 2215-2228.
• The Origin of the "b-Oxygen Effect" in the Barton Deoxygenation Reaction, D. Crich, A. L. J. Beckwith, C. Chen, Q. Yao, I. G. E. Davison, R. W. Longmore, C. Anaya de Parrodi, L. Quintero-Cortes and J. Sandoval-Ramirez, J. Am. Chem. Soc., 1995, 117, 8757-8768.
• Chemistry of Cyclic Tautomers of Tryptophan: Total Synthesis of (+)-(ent)-Pseudophrynaminol, D. Crich, A. Pavlovic and R. Samy, Tetrahedron, 1995, 51, 6379-6384.
• An 18O-Labelling Study of the b-(Nitroxy)alkyl and b-(Trifluoroacetoxy)alkyl Radical Migrations: Further Examples of a 1,2-Shift Mechanism, D. Crich and G.F. Filzen, J. Org. Chem., 1995, 60, 4834-4837.
• Chemistry of Cyclic Tautomers of Tryptophan: Free Radical Reactions at C-2 Occur Preferentially on the Endo-Face of the Diazabicyclooctane Skeleton, D. Crich and S. Natarajan, J. Org. Chem., 1995, 60, 6237-6241.
• Intramolecular Hydrogen Abstraction. The b-Oxygen Effect in the Norrish Type II Photoreaction, J. Brunckova and D. Crich, Tetrahedron, 1995, 51, 11945-11952.
• Radical Clock Reactions Under Pseudo-First Order Conditions Using Catalytic Quantities of Diphenyl Diselenide, D. Crich, X.-Y. Jiao, Q. Yao, and J. S. Harwood, J. Org. Chem., 1996, 61, 2368-2373.
• Chemistry of 1-Alkoxy-1-glycosyl Radicals: the Manno- and Rhamnopyranosyl Series. Inversion of a- to b-Pyranosides and the Fragmentation of Anomeric Radicals, D. Crich, S. Sun, and J. Brunckova, J. Org. Chem., 1996, 61, 605-615.
• Chemistry of b-(Phosphatoxy)alkyl and b-(Acyloxy)alkyl Radicals. Migration Reactions: Scope and Stereoselectivity of the b-(Phosphatoxy)alkyl Rearrangement. Mechanism of the b-(Phosphatoxy)alkyl and b-(Acyloxy)alkyl Migration, D. Crich, Q. Yao, and G.F. Filzen, J. Am Chem. Soc., 1995, 117, 11455-11470.
• Diastereoselective Cyclizations of 1,3-Dioxan-2-yl Radicals: Chiral Acyl Radical Equivalents, M. P. Bertrand, D. Crich, R. Nouguier, R. Samy, and D. Stien, J. Org. Chem., 1996, 61, 3588-3589.
• Generation of Acyl Radicals from Thiolesters by Intramolecular Homolytic Substitution at Sulfur, D. Crich and Q. Yao, J. Org. Chem., 1996, 61, 3566-3570.
• Optimizing the 5-exo/6-endo Ratio of Vinyl Radical Cyclizations Through Catalysis with Diphenyl Diselenide, D. Crich, J.-T. Hwang, and H. Liu, Tetrahedron Lett., 1996, 37, 3105-3108.
• Free Radical Chemistry of Lactones: Ring Contractions and Expansions, D. Crich, A. L. J. Beckwith, G. F. Filzen, and R. W. Longmore, J. Am. Chem. Soc., 1996, 118, 7422-7423.
• Formation of b-Mannopyransides of Primary Alcohols using the Sulfoxide Method, D. Crich and S. Sun, J. Org. Chem., 1996, 61, 4506-4507.
• The b-(Phosphatoxy)alkyl Radical Rearrangement. Rate Constants, Arrhenius Parameters, and Structure Activity Relationships, D. Crich and X.-Y. Jiao, J. Am. Chem. Soc., 1996, 118, 6666-6670.
• Chemistry of 1-Alkoxy-1-glycosyl Radicals: Formation of b-Mannopyranosides by Radical Decarboxylation and Decarbonylation of manno-Heptulosonic Acid Glycoside Derivatives, D. Crich, J.-T. Hwang, and H. Yuan, J. Org. Chem., 1996, 61, 6189-6198.
• A Practical Method for the Removal of Organotin Residues from Reaction Mixtures, D. Crich and S. Sun, J. Org. Chem., 1996, 61, 7200-7201.
• Solvent Effects in the b-(Phosphatoxy)alkyl Radical Migration as Revealed by Deuterium Labelling and 1H-NMR Spectroscopy, D. Crich, J. Escalante, and X.-Y. Jiao J. Chem. Soc., Perkin 2, 1997, 627-630.
• Vers la Synthèse du Taxol in ‘Actualités de Chimie Thérapeutique’ Eds. J. Maldonado and P. Vanelle, Elsevier, Paris, 1997, vol. 23, pp 189-206.
• Designed Chiral Acyl Radical Equivalents. Preparation and Cyclizations of Disymmetrically Substituted 1,3-Dioxabicyclo[4.4.0]decane-2-yl Radicals, D. Stien, R. Samy, R. Nouguier, D. Crich, and M. P. Bertrand, J. Org. Chem. 1997, 62, 275-286.
• Nucleotide C3’,4’-Radical Cations and the Effect of a 2’-Oxygen Substituent. The DNA/RNA Paradox, D. Crich and X.-S. Mo, J. Am. Chem. Soc., 1997, 119, 249-250.
• Direct Synthesis of b-Mannospyranosides by the Sulfoxide Method, D. Crich and S. Sun, J. Org. Chem, 1997, 62, 1198-1199.
• Asymmetric Synthesis of a Taxol C-Ring byAldol Condensation and Radical Cyclization, D. Crich, X.-Y. Jiao, and M. Bruncko, Tetrahedron, 1997, 53, 7127-7138.
• Synthesis of the Taxol AB-System by Olefination of an A-Ring C1 Ketone and Direct B-Ring Closure, D. Crich, S. Natarajan, and J. Z. Crich, Tetrahedron, 1997, 53, 7139-7158.
• Generation and Cyclization of Acyl Radicals from Thiol Esters Under Non-Reducing, Tin Free Conditions, D. Crich and X. Hao, J. Org. Chem., 1997, 62, 5982-5988.
• Nucleotide C4’ Radical Fragmentation is Base-Dependent, D. Crich and X.-S. Mo, Tetrahedron Lett., 1997, 38, 8169-8172.
• Are Glycosyl Triflates Intermediates in the Sulfoxide Glycosylation Method?, A Chemical and ¹H, ¹³C, and ¹⁹F-NMR Spectroscopic Investigation, D. Crich and S. J. Am .Chem. Soc., 1997, 119, 11217-11223.
• The Free Radical Chemistry of Esters: Radical and Radical Ionic Migrations and Fragmentations of Carbon-Oxygen Bonds, A. L. J. Beckwith, D. Crich, P. J. Duggan, and Q. Yao, Chem. Rev., 1997, 97, 3273-3312.
• Free Radical Chemistry of Nucleosides and Nucleotides. Ring Opening of C4’ Radicals, D. Crich and Q. Yao, Tetrahedron, 1998, 54, 305-318.
• Direct Synthesis of b-D-Xyl-(1-2)-b-D-Man-(1-4)-a-D-Glc-OMe: A Trisaccharide Component of the Hyriopsis Schlegelii Glcosylphingolipid, D. Crich and Z. Dai, Tetrahedron Lett., 1998, 39, 1681-1684.
• Free Radical Chemistry of Lactones: Fragmentation of b-Lactones. The Beneficial Effect of Catalytic Benzeneselenol on Chain Propagation, D. Crich and X.-S. Mo, J. Org. Chem., 1997, 62, 8624-8625.
• Steric Acceleration in the Reaction of Aryl Bromides with Tributylstannyl Radicals, D. Crich and F. Recupero, J. Chem. Soc., Chem. Commun., 1998, 189-190.
• Absence of Diffusively Free Radical Cation Intermediates in Reactions of b-(Phosphatoxy)alkyl Radicals, S.-Y. Choi, D. Crich, J. H. Horner, X. Huang, F. N. Martinez, M. Newcomb, D. J. Wink, Q. Yao, J. Am. Chem. Soc., 1998, 120, 211-212.
• Direct Formation of b-Mannopyranosides and Other Hindered Glycosides from Thioglycosides, D. Crich and S. Sun, J. Am. Chem. Soc., 1998, 120, 435-436.
• Synthesis of the 3a-(3-Indolyl)-1,2,3,3a,8,8a-hexahydropyrrolo[2,3-b]indole Core of Leptosins D-F, D. Crich, E. Fredette, and W. J. Flosi, Heterocycles, 1998, 48, 545-547.
• Stannane-Mediated Radical Addition to Arenes. Generation of Cyclohexadienyl Radicals and Increased Propagation Efficiency in the Presence of Catalytic Benzeneselenol, D. Crich and J.-T. Hwang, J. Org. Chem., 1998, 63, 2765-2770.
• Direct Chemical Synthesis of b-Mannopyranosides and Other Glycosides via Glycosyl Triflates, D. Crich and S. Sun, Tetrahedron, 1998, 54, 8321-8348.
• Chiral Acyl Radical Equivalents: 5-exo Cyclization of Conformationally Constrained 1,3-Dioxolanyl Radicals, D. Stien, D. Crich and M. P. Bertrand, Tetrahedron, 1998, 54, 10779-10788.
• A Convenient Asymmetric Synthesis of 4’-a-Carboxylated Nucleosides, D. Crich and X. Hao, J. Org. Chem. 1998, 63, 3796-3797.
• Free Radical Chemistry of b-Lactones. Arrhenius Parameters for the Decarboxylative Cleavage and Ring Expansion of 2-Oxetanon-4-ylcarbinyl Radicals. Facilitation of Chain Propagation by Catalytic Benzeneselenol, D. Crich and X.-S. Mo, J. Am. Chem. Soc., 1998, 120, 8298-8304.
• b-(Phosphatoxy)alkyl and b-(Acyloxy)alkyl Radical Migrations Studied by Lasar Flash Photolysis, S.-Y. Choi, D. Crich, J. H. Horner, X. Huang, M. Newcomb, and P. O. Whitted, Tetrahedron, 1999, 55, 3317-3326.
• Stereoselective Sulfoxidation of a-Mannopyranosyl Thioglycosides: the exo-Anomeric Effect in Action, D. Crich, J. Mataka, S. Sun, K.-C. Lam, A. L. Rheingold and D. J. Wink, J. Chem. Soc., Chem. Commun., 1998, 2763-2764.
• Synthesis of Fully-Substituted Enediynes by the Corey-Winter Reaction, D. Crich, A. B. Pavlovic and D. J. Wink, Syn. Commun., 1999, 29, 359-377.
  137. Convergent, Stereoselective Synthesis of the Caloporoside Disaccharide, D. Crich and G. Barba, Tetrahedron Lett. 1998, 39, 9339-9342.
• On the Stereochemistry of Vicinal Nucleophilic Substitution of b-(Phosphatoxy)alkyl Radicals, D. Crich and S. Gastaldi, Tetrahedron Lett., 1998, 39, 9377-9380.
  139. One Pot Selective 5’-Oxidation/Olefination of 2’-Deoxynucleosides, D. Crich and X.-S. Mo, Synlett., 1999, 67-68.
• Direct Synthesis of b-Mannosides. Synthesis of b-D-Xyl-(1®2)-b-D-Man-(1®4)-a-D-Glc-)Me: a Trisaccharide Component of the Hyriopsis Schlegelii Glycosphingolipid. Formation of an Orthoester from a Xylopyranosyl Sulfoxide, D. Crich and Z. Dai, Tetrahedron, 1999, 55, 1569-1580.
• Free-Radical Ring Contraction of 6-, 7-, and 8-Membered Lactones Occurs by a1,2-Shift Mechanism. A Kinetic and ¹⁷O-NMR Spectroscopic Study, D. Crich, X. Huang, and A. L. J. Beckwith, J. Org. Chem., 1999, 64, 1762-1764.
• Chemistry of Acyl Radicals, C. Chatgilialoglu, D. Crich, I. Ryu and M. Komatsu, Chem. Rev., 1999, 99, 1991-2070.
• Diverging Effects of Steric Congestion on the Reaction of Tributylstannyl Radicals with Areneselenols and Aryl Bromides and their Mechanistic Implications, D. Crich, J.-T. Hwang, S. Gastaldi, F. Recupero, and D. J. Wink, J. Org. Chem. 1999, 64, 2788-2794.
• Asymmetric Synthesis of C4’a-Carboxylated Nucleosides. Preparation of Oxetanone Derivatives and Influence of Solvent on Stereochemistry of Base Introduction, D. Crich and X. Hao, J. Org. Chem. 1999, 64, 4016-4024.
• Chemistry of 4,6-O-Benzylidene-D-glycopyranosyl Triflates: Contrasting Behavior between the Gluco- and Manno-Series, D. Crich and W. Cai, J. Org. Chem. 1999, 64, 4926-4930.
• On the Role of Neighboring Group Participation and Orthoesters in b-Xylosylation: ¹³C NMR Observation of a Bridging 2-Phenyl-1,3-dioxalenium Io, D. Crich, Z. Dai and S. Gastaldi, J. Org. Chem. J. Org. Chem. 1999, 64, 5224-5229.
• Heterolytic Cleavage of a b-(Phosphatoxy)alkyl Radical Resulting in Phosphate Migration or Radical Cation Formation as a Function of Solvent Polarity, P. O. Whitted, J. H. Horner, M. Newcomb, X. Huang, D. Crich, Org. Lett. 1999, 1, 153-156.
  148. Synthesis of Tetrahydrofurans by a Tandem Hydrogen Atom Abstraction/Radical Nucleophilic Displacement Sequence, D. Crich, X. Huang and M. Newcomb, Org. Lett. 1999, 1, 225-228.
• Inhibition of Stannane-Mediated Radical Rearrangements by a Recoverable, Minimally Fluorous Selenol, D. Crich, X. Hao and M. A. Lucas, Org. Lett. 1999, 1, 269-272.
• Isolation and Identification of Poly-a-(1-4)-linked 3-O-Methylmannopyranose from a Hot Water Extract of Mycobacterium vaccae, X.-X. Tian, A. Li, I. V. Farrugia, X.-S. Mo, D. Crich., and M. J. Groves, Carbohydr. Res., 2000, 324, 38-44.
• On the Reaction of Tryptophan Derivatives with N-Phenylselenyl Phthalimide; the Nature of the Kinetic and Thermodynamic Hexahydropyrrolo[2,3-b]indole Products. Alkylation of Tryptophan with Inversion of Configuration, D. Crich and X. Huang, J. Org. Chem., 1999, 64, 7218-7223.
• Chemistry of Glycosyl Triflates: Synthesis of b-Mannopyranosides, D. Crich in Glycochemistry: Principles, Synthesis and Applications, P. G. Wang and C. R. Bertozzi Eds, Dekker, New York, in press.
  153. Highly Diastereoselective a-Mannosylation in the Absence of Participating Protecting Groups, D. Crich, W. Cai and Z. Dai, J. Org. Chem. 2000, 65, 1291-1297.

• b-Phosphatoxyalkyl Radical Reactions. Competing Phosphate Migration and Phosphoric Acid Elimination from a Radical Cation – Phosphate Anion Pair formed by Heterolytic Fragmentation, M. Newcomb, J. H. Horner, P. O. Whited, D. Crich, X. Huang, Q. Yao, and H. Zipse, J. Am. Chem. Soc. 1999, 121, 10685-10694.

• Design, Synthesis, Application and Recovery of a Minimally Fluorous Diaryl Diselenide for the Catalysis of Stannane-Mediated Radical Chain Reactions, D. Crich, X. Hao and M. Lucas, Tetrahedron, 1999, 55, 14261-14268.
• Direct Stereoselective Synthesis of b-Thiomannosides, D. Crich and H. Li, J. Org. Chem., 2000, 65, 801-805.
• Inter and Intramolecular Pathways for the Formation of Tetrahydrofurans from b-(Phosphatoxy)alkyl Radicals. Evidence for a Dissociative Mechanism, D. Crich, X. Huang and M. Newcomb, J. Org. Chem., 2000, 65, 523-529.
• Efficient One-Pot Conversion of Carbonyl Compounds to Their a,b-Unsaturated Derivatives Using a Recoverable, Minimally Fluorous Organoselenium Reagent, D. Crich and G. R. Barba, Org. Lett., 2000, 2, 989-991.
• Reaction of Sodium Cyanide with 5-Bromobenzo-1-suberone: A Reappraisal, D. Crich and S. Gastaldi, New J. Chem, 2000, 249-250.
• Laser Flash Photolysis Kinetic Studies of a-Methoxy-b-phosphatoxyalkyl Hetereolysis Reactions. A Method for Alkoxyalkyl Radical Cation Detection, M. Newcomb, N. Miranda, X. Huang and D. Crich, J. Am. Chem. Soc., 2000, 122, 6128-6129.
• An Unusual Example of Steric Buttressing in Glycosylation, D. Crich and V. Dudkin, Tetrahedron Lett., 2000, 41, 5643-5646.
• Radical Rearrangement of Esters, D. Crich in Radicals in Organic Synthesis, P. Renaud and M. P. Sibi, Eds, Wiley-VCH, Weinheim, 2001, 188-206.
• Efficient Diastereoselective Synthesis of a b-Mannosyl Phosphoisoprenoid, D. Crich and V. Dudkin, Org. Lett. 2000, 2, 3941-3943.
• Efficient Conversion of Vicinal Diols to Alkenes by Treatment of the Corresponding Dimesylates with a Catalytic, Minimally Fluorous, Recoverable Diaryl Diselenide and Sodium Borohydride, D. Crich, S. Neelamkavil, and F. Sartillo-Piscil, Org. Lett. 2000, 2, 4029-4031.
• 2,4,6-Tri-tert-butylpyrimidine (TTBP): A Cost Effective, Readily Available Alternative to the Hindered Base 2,6-Di-tert-butylpyridine and its 4-Substituted Derivatives in Glycosylation and Other Reactions, D. Crich, M. Smith, Q. Yao, and J. Picione, invited contribution, Synthesis 2001, 323-326.
• S-(4-Methoxyphenyl) Benzenethiosulfinate (MPBT)/Trifluoromethanesulfonic Anhydride; A Convenient System for the Generation of Glycosyl Triflates from Thioglycosides, D. Crich and M. Smith, Org. Lett. 2000, 2, 4067-4069.
• Product Studies and Laser Flash Photolysis on Alkyl Radicals Containing Two Different b-Leaving Groups are Consonant with the Formation of an Olefin Cation Radical, B. C. Bales, J. H. Horner, X. Huang, M. Newcomb, D. Crich, and M. M. Greenberg, J. Am. Chem. Soc., 2001, 123, 3623-3629.
• Why Are the Hydroxy Groups of Partially Protected N-Acetylglucosamine Derivatives Such Poor Glycosyl Acceptors, and What Can Be Done About It? A Comparative Study of the Reactivity of N-Acetyl-, N-Phthalimido-, and 2-Azido-2-Deoxy-Glucosamine Derivatives in Glycosylation. 2-Picolinyl (Pic) Ethers as Reactivity Enhancing Replacements for Benzyl Ethers, D. Crich and V. Dudkin, J. Am. Chem. Soc., 2001, 123, 6819-6825.
• Direct Synthesis of ß-Mannans. A Hexameric [→3)-ß-D-Man-(1→4)-ß-D-Man-(1]₃ Subunit of the Antigenic Polysaccharides from Leptospira biflexa and the Octameric (1[→2)-Linked ß-D-Mannan of the Candida albicans Phospholipomannan. X-Ray Crystal Structure of a Protected Tetramer, D. Crich, H. Li, Q. Yao, D. J. Wink, R. D. Sommer, and A. L. Rheingold, J. Am. Chem. Soc., 2001, 123, 5826-5828.

• Generation and Reaction of Alkene Radical Cations under Non-Oxidizing Conditions; Synthesis of the Pyrrolizidine Nucleus, D. Crich, K. Ranganathan and X. Huang, Org. Lett., 2001, 3, 1917-1919.