Question

In Hell Volhard Zelinsky reaction, the carboxylic acids are halogenated at _____ position by using _______ and ______.

• A. $\alpha$, $NaOH$, iodine
• B. $\alpha$, phosphorus, halogen
• C. $\beta$, phosphorus, $H_{2}O$
• D. $\beta$, $PC{l}_5$, $NaOH$

Answer 1

The correct option is B $\alpha$, phosphorus, halogen

$\alpha$ position.

$R-C{H}_2-COOH\underset{Pp{h}_3,B{r}_2}{\to }R-CHBr-COOH$

Hell Volhard Zelinsky reaction.