Acetic Anhydride → N-[2-morpholin-4-yl-5-(trifluoromethyl)phenyl]acetamide

Participants

Reaction Steps

A mixture of 40 g. (16 mmoles) of 4-(2-amino-4-trifluoromethylphenyl)morpholine and 2.2 g. (22 mmoles) of acetic anhydride in 40 ml. of dry dimethoxyethane was heated at 70° C. for 10 hours. The reaction mixture was cooled to room temperature and then the solvent removed by evaporation under reduced pressure. The residue was dissolved in 100 ml. of methylene chloride and the solution washed with 5% sodium bicarbonate solution. After drying over anhydrous sodium sulfate, the solution was filtered and evaporated under reduced pressure. The residue was dissolved in n-hexane from which it crystallized to give 4.4 g. (96%) of the desired product melting at 85° C.

Provenance & Evidence