A and B in the following reactions are | vedclass

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Question

(A) The reaction of a ketone $(RR'C=O)$ with $HCN$ in the presence of $KCN$ (catalyst) leads to the formation of a cyanohydrin,where $A = RR'C(OH)(CN)

Vedclass · Accepted Answer

$A = RR'C(CN)(OH), B = LiAlH_4$

Vedclass · Answer

(A) The reaction of a ketone $(RR'C=O)$ with $HCN$ in the presence of $KCN$ (catalyst) leads to the formation of a cyanohydrin,where $A = RR'C(OH)(CN)$.Next,the reduction of the cyanohydrin $(RR'C(OH)(CN))$ using a strong reducing agent like $LiAlH_4$ reduces the nitrile group $(-CN)$ to a primary amine group $(-CH_2NH_2)$.Therefore,$A = RR'C(OH)(CN)$ and $B = LiAlH_4$.

$A$ and $B$ in the following reactions are

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