Q10 · CSIR-NET Chemistry, December 2012
Paper: CSIR-NET December 2012 · Subject: Organic Chemistry · Chapter: General Organic Chemistry · Topic: Stereochemistry R S E Z · Marks: 2 · Difficulty: Medium
The absolute configuration at the two chiral centres of (-)-camphore is: 
(a)1R, 4R
(b)1R, 4S
(c)1S, 4R
(d)1S, 4S
Answer
Answer: D ✓ checked by 4AB · confidence high
Explanation
(−)-Camphor is (1S,4S)-1,7,7-trimethylbicyclo[2.2.1]heptan-2-one; the natural (+)-enantiomer is (1R,4R).
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