Which of the following will produce chiral molecule(s) after reaction is completed.
A
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B
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C
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D
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Solution
The correct options are B C D (a) Upon decarboxylation, achiral molecule is formed. (b) To minimise steric repulsion, both phenyl ring remain in mutually perpendicular plane. Cannizzaro reaction produces optically active molecule. (c) The cynohydrin formed in this reaction has chiral centre. Products exist in racemic mixture. (d) Aldol addition generates a chiral centre in the product fomed.