Asked by sukanya bhandarkar on Sep 22, 2024
Verified
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.
Quaternary Carbon
A carbon atom bonded to four different groups, distinguishing it as a center of chirality in certain organic molecules.
Tertiary Carbon
A carbon atom bonded to three other carbon atoms.
Secondary Carbon
A carbon atom that is attached to two other carbon atoms in an organic molecule.
- Compare and contrast chair conformations of substituted cyclohexanes for stability and substituent positioning.
Verified Answer
JU
Jalal Uddin5 days ago
Final Answer :
A
Explanation :
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.
Learning Objectives
- Compare and contrast chair conformations of substituted cyclohexanes for stability and substituent positioning.
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