Hydrochloric Acid → 2,6-Difluorobenzoyl isocyanate

Participants

Reaction Steps

Twenty-eight grams (0.22 mol) of oxalyl chloride were added dropwise to a solution of 31.4 gm (0.20 mol) of 2,6-difluorobenzamide in 250 ml of toluene. The solution thus obtained was boiled under reflux for five hours, during which time hydrogen chloride and carbon monoxide were liberated. The solvent was then distilled off, in vacuo at the end. The product which remained was distilled in an oil pump vacuum.

Provenance & Evidence