Q88 · CSIR NET Chemistry, June 2019
Paper: CSIR NET June 2019 · Subject: Organic Chemistry · Chapter: Stereochemistry · Topic: Stereochemistry – General · Marks: 2 · Difficulty: Hard
The most stable conformation of the following molecule is: 
(a)[fragment not cut — see note]
(b)
(c)
(d)
Answer
Answer: B ✓ checked by 4AB · confidence medium
Explanation
A(1,3) strain between the ring methyl and the cis methyl of the exocyclic isopropylidene forces the 2-methyl group axial (b).
Study loop for Stereochemistry