Hydrochloric Acid → Nonanoyl chloride

Participants

Reaction Steps

100.5 g (1.38 mol) of N,N-dimethylformamide were added to 2.75 mol of pelargonic acid in a stirred apparatus. The reaction solution was brought to a temperature of from 20 to 30° C. with stirring, and a total of 2.78 mol of gaseous phosgene and simultaneously 1.92 mol of gaseous hydrogen chloride were introduced under atmospheric pressure. When the addition of phosgene and hydrogen chloride was complete, the two phases were separated from one another. The catalyst phase comprised a molar proportion of the catalyst adduct, based on the molar amount of N,N-dimethylformamide plus catalyst adduct, of 1%. The carbonyl chloride phase comprised 98.9% by weight of pelargonoyl chloride and 0.04% by weight of pelargonic anhydride. The color number was 18 APHA.

Provenance & Evidence