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Question
Identify A and B in the following chemical reaction:
Identify A and B in the following chemical reaction:
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Solution
The correct option is D
HCl gives an addition reaction with the alkene. The Cl− part of HCl adds to that position of double bond which forms a stable carbocation on hetrolytic cleavage. Since the carbocation formed at the position near to the −OCH3 group is more stable due to the +M effect of −OCH3 group hence Cl− adds to that part only to give the major product A. NaI in dry acetone gives an SN2 reaction and thus I− nucleophile attacks the carbon atom containing Cl leaving group to give major product B.
HCl gives an addition reaction with the alkene. The Cl− part of HCl adds to that position of double bond which forms a stable carbocation on hetrolytic cleavage. Since the carbocation formed at the position near to the −OCH3 group is more stable due to the +M effect of −OCH3 group hence Cl− adds to that part only to give the major product A. NaI in dry acetone gives an SN2 reaction and thus I− nucleophile attacks the carbon atom containing Cl leaving group to give major product B.
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