A carboxylic acid can best be converted into acid chloride by using

Question

A carboxylic acid can best be converted into acid chloride by using (A) PCl 5 (B) SOCl 2 (C) HCl (D) ClCOCOCl

Tardigrade Admin · Accepted Answer

Use of SOCl 2 and ClCOCOCl forms gaseous byproducts which can be easily removed, giving better yield of RCOCl. Further, oxalyl chloride is particularly easy to use becasue any excess of it can be easily evaporated due to its low b.p. (62° C )

Q. A carboxylic acid can best be converted into acid chloride by using

$PC l_{5}$

$SOC l_{2}$

$H Cl$

$ClCOCOCl$

Use of $SOC l_{2}$ and $ClCOCOCl$ forms gaseous byproducts which can be easily removed, giving better yield of $RCOCl$ . Further, oxalyl chloride is particularly easy to use becasue any excess of it can be easily evaporated due to its low b.p. $(6 2^{\circ} C)$

Q. A carboxylic acid can best be converted into acid chloride by using

PCl5​

SOCl2​

HCl

ClCOCOCl

Use of SOCl2​ and ClCOCOCl forms gaseous byproducts which can be easily removed, giving better yield of RCOCl. Further, oxalyl chloride is particularly easy to use becasue any excess of it can be easily evaporated due to its low b.p. (62∘C)

$PC l_{5}$

$SOC l_{2}$

$H Cl$

$ClCOCOCl$

Use of $SOC l_{2}$ and $ClCOCOCl$ forms gaseous byproducts which can be easily removed, giving better yield of $RCOCl$ . Further, oxalyl chloride is particularly easy to use becasue any excess of it can be easily evaporated due to its low b.p. $(6 2^{\circ} C)$