Reaction #54541

Reaction equation

thionyl chloride

p-sulfomethylphenylacetic acid

→

title compound

p-Sulfomethylphenylacetyl Chloride

Solvents

ether

Conditions

Workup

1. 1
   workup.STIRRINGthe resulting mixture is stirred at 40° C. for 2.5 hours

Procedure

To a solution of thionyl chloride in 20 ml of anhydrous ether is added p-sulfomethylphenylacetic acid. The mixture is stirred at room temperature until gas evolution ceases. Two drops of dimethylformamide is added, and the resulting mixture is stirred at 40° C. for 2.5 hours. The title compound is obtained after filtration and evaporation of the reaction mixture. The infrared spectrum of the product shows a characteristic acid chloride absorption at 1830 cm-1 whereas the starting acid shows a carbonyl absorption at 1740 cm-1.

Source