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Question

′A′ and ′B′, respectively, are:
707792_cd5280f28c724430ac727afd07ecae00.png

A
CH2CH=CHR|CHOH and CH2C|RHCH2CHO
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B
CH3C|RHCH2CHO and CH3CH=CHR|CHOH
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C
CH3CH=CHR|CHOH as both A and B
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D
CH3C|RHCH2CHO as both A and B
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Solution

The correct option is A CH2CH=CHR|CHOH and CH2C|RHCH2CHO
A and B are shown in the above reaction.
CH3CH=CHO||CHRMgX/THF/NH4Cl−−−−−−−−−−−−CH3CH=CHR|CHOH

CH3CH=CHO||CHH+CH3+CHCH2O||CHRMgX/THF−−−−−−−CH3R|CHCH2O||CH
or

CH3CH=CHO||CHRMgX/THF/HCl−−−−−−−−−−CH3R|CHCH2O||CH

Option A is correct.

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