Dimethylformamide → 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 were introduced under atmospheric pressure. After the addition of phosgene 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 <0.05. The carbonyl chloride phase comprised 97.1 area % of pelargonoyl. chloride and 1.9 area % of pelargonic anhydride. The color number was 16 APHA.

Provenance & Evidence