Q16 · CSIR-NET Chemistry, June 2011
Paper: CSIR-NET June 2011 · Subject: Organic Chemistry · Chapter: General Organic Chemistry · Topic: Stereochemistry R S E Z · Marks: 2 · Difficulty: Medium
Among A-C, the compounds which can exhibit optical activity are 
(a)A, B and C
(b)A and B only
(c)A and C only
(d)B and C only
Answer
Answer: C ✓ checked by 4AB · confidence high
Explanation
A: N⁺ with four different groups (Ph, PhCH₂, Me, vinyl) is a stable stereocentre. B: in the zig-zag drawing, OH on a wedge and OH on a hash on the two central carbons is the meso (erythritol) form. C: the sulfoxide sulfur is a stereocentre. A and C (c).
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