Question

$(C{H}_3{)}_{3}CMgCl$ on reaction with $D_{2}O$ produces

• A. $(C{H}_3{)}_{3}CD$
• B. $(C{H}_3{)}_{2}COD$
• C. $(C{D}_3{)}_{3}CD$
• D. $(C{H}_3{)}_{3}COD$

Answer 1

The correct option is A $(C{H}_3{)}_{3}CD$

When $(C{H}_3{)}_{3}CMgCl$ reacts with $D_{2}O$ the $C-Mg$ bond donates its electron pair to a deuterium atom,forming $(C{H}_3{)}_{3}C-D$ and $MgClOH$
This occurs because the $C$ that is bonded to $Mg$ is strongly nucleophilic and can attack a region of positive charge density such as the deuterium atom in a water molecule.

Hence answer is option $A$.