question_answer

In which of the following reactions, the final product is 2- methyl-1-2propanol?

A)  \[C{{H}_{3}}CHO\xrightarrow[(ii)\,{{H}_{3}}{{O}^{+}}]{(i)\,C{{H}_{3}}MgBr/dry\,ether}\]

B)  \[C{{H}_{3}}CHO\xrightarrow[(ii)\,{{H}_{3}}{{O}^{+}}]{(i)\,{{C}_{2}}{{H}_{5}}MgBr/dry\,ether}\]

C)  \[C{{H}_{3}}COC{{H}_{3}}\xrightarrow[(ii)\,{{H}_{3}}{{O}^{+}}]{(i)\,C{{H}_{3}}MgBr/dry\,ether}\]

D)  \[C{{H}_{3}}COC{{H}_{3}}\xrightarrow[(ii)\,{{H}_{3}}{{O}^{+}}]{(i)\,C{{H}_{3}}MgBr/wet\,ether}\]

Correct Answer: C

Solution :

                       When wet ether is used, Grignard reagent reacts, with water inspite of acetone. The reactions is as follows: