Alcohols Phenols And Ethers Question 44

Question: Which one of the following reactions would produce secondary alcohol

[MP PET 1994]

Options:

A) $ \overset{\overset{O}{\mathop{||}}}{\mathop{C_6H_5CCH_3}}\underset{2.{H^{+}}}{\mathop{\xrightarrow{1.CH_3MgBr}}} $

B) $ \overset{\overset{O}{\mathop{||}}}{\mathop{C_6H_5CCH_3}}\underset{2.{H^{+}}}{\mathop{\xrightarrow{1.LiAlH_4}}} $

C) $ CH_3CHO\underset{2.{H^{+}}}{\mathop{\xrightarrow{1.LiAlH_4}}} $

D) $ \overset{\overset{O}{\mathop{||}}}{\mathop{CH_3CCH_3}}\underset{2.Br_2}{\mathop{\xrightarrow{1.O{H^{-}}}}} $

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Answer:

Correct Answer: B

Solution:

$ \underset{Acetophenone}{\mathop{C_6H_5-\overset{O}{\mathop{\overset{||}{\mathop{C}}}}-CH_3}}\xrightarrow{LiAlH_4} $

$ \underset{2^{o}alcohol}{\mathop{C_6H_5-\overset{O}{\mathop{\overset{||}{\mathop{CH}}}}-CH_3}} $