Dimethylformamide → 2-Chloro-4-(2'-methylpropionamido)benzoyl chloride

Participants

Reaction Steps

Oxalyl chloride (0.63 g) in dry THF (5 ml) was added dropwise over 5 minutes to a solution of 2-chloro-4-(2'-methylpropionamido)benzoic acid (1.0 g) in dry THF (5 ml) at room temperature. After completion of the addition, dry DMF (1 drop) was added causing vigorous effervescence and a slight temperature rise. After stirring for 4 hours and addition of a further drop of DMF, the THF was evaporated to yield 2-chloro-4-(2'-methylpropionamido)benzoyl chloride as a viscous brown gum which was used without further purification. IR (liquid film): 3320, 3260, 3160, 3070, 1780, 1710, 1680, cm-1.

Provenance & Evidence