Which of the following statements is a correct description of the most stable conformation of 1,1,3-trimethylcyclohexane?
A) The methyl group at C-3 is equatorial.
B) C-1 is a tertiary carbon and C-3 is a primary carbon.
C) C-1 is a quaternary carbon and C-3 is a secondary carbon.
D) C-1 is a tertiary carbon and C-3 is a secondary carbon.
E) Both methyl groups at C-1 are equatorial.

Question

Quizplus · Accepted Answer

The most stable conformation of 1,1,3-trimethylcyclohexane is achieved when the bulky methyl groups are equatorial. This minimizes steric hindrance between the methyl groups and the axial hydrogens on the ring. C-1 and C-3 are both tertiary carbons.

Which of the Following Statements Is a Correct Description of the Most