question_answer

n-butyraldehyde can be synthesized from n-propyl magnesium bromide and

A)  ethyl orthoformate       

B)  acetyl chloride

C)  n-butyl formate              

D)  formic acid

Correct Answer: A

Solution :

\[C{{H}_{3}}.C{{H}_{2}}.C{{H}_{2}}MgBr\to \underset{one\,extra\,carbon}{\mathop{C{{H}_{3}}.C{{H}_{2}}.C{{H}_{2}}.CHO}}\,\] Hence, it is ethyl orthoformate Treatment    of    HCOOH    converts\[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}MgBr\]into n-propane simply.