question_answer

The reaction of formaldehyde with Grignard reagent followed by hydrolysis yields:

A)  a primary alcohol

B)  a secondary alcohol

C)  a tertiary alcohol

D)  a phenol

Correct Answer: A

Solution :

                The reaction of\[HCHO\]with Grignard reagent followed by hydrolysis yields a primary alcohol, i.e., ethanol. \[H-\overset{\begin{smallmatrix}  H \\  | \end{smallmatrix}}{\mathop{C}}\,=O+C{{H}_{3}}MgBr\xrightarrow[{}]{{}}H-\underset{\begin{smallmatrix}  | \\  C{{H}_{3}} \end{smallmatrix}}{\overset{\begin{smallmatrix}  H \\  | \end{smallmatrix}}{\mathop{C}}}\,-OMgBr\]