1-chloro-3-ethylhexane

There are two possible six-carbon chains in the molecule, and you select the one bearing the halogen, to give the greatest number of substituents.

E-1,2-dibromocyclohexane

The two bromines are both equatorial (trans), making the stereochemistry E.

1-chloromethyl-2-methylcyclohexane

The cyclohexane ring is the parent chain; the chain is numbered beginning with the chloromethyl group (alphabetical) and proceeding in the direction to give the lowest number sequence.

Alkyl Halide Nomenclature

For each of the compounds on the left, give the IUPAC name.

Click the mouse on the molecule to view the answer;

click on the button to view the parent chain and the correct numbering sequence.