Q11 · CSIR NET Chemistry, June 2011
Paper: CSIR NET June 2011 · Subject: Organic Chemistry · Chapter: General Organic Chemistry · Topic: Conformational Analysis · Marks: 2 · Difficulty: Medium
In the most stable conformation of trans-1-t-butyl-3-methylcyclohexane, the substituents at C-1 and C-3, respectively, are
(a)Axial and equatorial
(b)Equatorial and equatorial
(c)Equatorial and axial
(d)Axial and axial.
Answer
Answer: C ✓ checked by 4AB · confidence high
Explanation
In a trans-1,3-disubstituted cyclohexane one group is axial and the other equatorial; the bulky t-butyl (A value 4.9) takes the equatorial position, forcing the methyl axial.
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