Question

Select the correct IUPAC name of the following structure.

• A. 4,5-Dimethyl-1-methylidenecyclohexene
• B. 1,2-Dimethyl-4-methylidenecyclohexane
• C. 2-Butylpent-1-ene
• D. 2-Propylhex-1-ene

Answer 1

The correct option is B 1,2-Dimethyl-4-methylidenecyclohexane

Alkylidene group is attached to cyclohexane here is methylidene.
Ring is the parent chain here.
Naming of substituents is done in alphabetical order.


The correct IUPAC name of the above structure is 1,2-dimethyl-4-methylidenecyclohexane.