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Question

Propyl lithium reacts with ethene to give a compound (A) which on reaction with methanal followed by acidic hydrolysis gives compound (B) is:

A
Heptan-1-ol
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B
Heptan-2-ol
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C
Hexan-1-ol
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D
Hexan-2-ol
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Solution

The correct option is C Hexan-1-ol
Propyl lithium reacts with ethene to give a compound (A) which is pentyl lithium. A molecule of propyl lithium is added across C = C double bond of ethene.
Pentyl lithium on reaction with methanal (formaldehyde) followed by acidic hydrolysis
gives compound (B) which is hexan-1-ol. Thus, the option C is the correct answer.
412203_244491_ans_1c0d04f176c0482aa3c07280a844c155.png

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