Question

In HVZ reactions, the substitution takes place at:

Options

• Carbon atom of the carboxyl group

• Carbon atom attached to carboxyl group

• Both carbon atom of the carboxyl group and carbon atom attached to carboxyl group

• None of these

Answer 1

Carbon atom attached to carboxyl group

Explanation:

In HVZ reactions; α - carbon which is attached to carboxyl group must have α - hydrogen.

\[\begin{array}{cc}
\phantom{}\ce{RCHCOOH ->[(i) X2Red P][(ii) H2O] R -\underset{|}{C}H - COOH (X = Cl, Br)}\\
\phantom{...}\ce{X}
\end{array}\]