Cycloaddition Reactions: Synthesis - I
The molecule shown below can be prepared by a simple [4+2]
cycloaddition reaction. Using the drawing pallet on the
right, draw the structures of the diene and
dienophile required for this synthesis, paying
particular attention to the stereochemistry of the
reactants.
To identify the reactants in a [4+2] cycloaddition
reaction, identify the carbons of the dienophile (they will
be the two carbons in a six-member ring which are
opposite to the double bond in the product) and
mentally split the bonds, separating the carbon
skeletons of the diene and the dienophile.
Using the drawing pallet on the right, draw the structure
of the major organic product for the reaction shown below:
To identify the reactants in a [4+2] cycloaddition
reaction, identify the carbons of the dienophile (they will
be the two carbons in a six-member ring which are
opposite to the double bond in the product) and
mentally split the bonds, separating the carbon
skeletons of the diene and the dienophile.
Using the drawing pallet on the right, draw the structure
of the major organic product for the reaction shown below:
To identify the reactants in a [4+2] cycloaddition
reaction, identify the carbons of the dienophile (they will
be the two carbons in a six-member ring which are
opposite to the double bond in the product) and
mentally split the bonds, separating the carbon
skeletons of the diene and the dienophile. As shown
below, in this problem, it is helpful to first convert the
chair cyclohexene into the boat form.
Using the drawing pallet on the right, draw the structure
of the major organic product for the reaction shown below:
To identify the reactants in a [4+2] cycloaddition
reaction, identify the carbons of the dienophile (they will
be the two carbons in a six-member ring which are
opposite to the double bond in the product) and
mentally split the bonds, separating the carbon
skeletons of the diene and the dienophile.
Using the drawing pallet on the right, draw the structure
of the major organic product for the reaction shown below:
To identify the reactants in a [4+2] cycloaddition
reaction, identify the carbons of the dienophile (they will
be the two carbons in a six-member ring which are
opposite to the double bond in the product) and
mentally split the bonds, separating the carbon
skeletons of the diene and the dienophile.
Using the drawing pallet on the right, draw the structure
of the major organic product for the reaction shown below:
To identify the reactants in a [4+2] cycloaddition
reaction, identify the carbons of the dienophile (they will
be the two carbons in a six-member ring which are
opposite to the double bond in the product) and
mentally split the bonds, separating the carbon
skeletons of the diene and the dienophile.
That is correct!
Sorry, that is not correct. You should modify your
structures and try again. Remember to use the NEW button to draw the second structure and show cis -trans stereochemistry when appropriate.
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Note: Use NEW to begin
drawing a second molecule.
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