4-(Trifluoromethyl)benzamide → 4-(Trifluoromethyl)thiobenzamide

Participants

Reaction Steps

A mixture of 4-trifluoromethylbenzamide (79 mM) and Lawesson's reagent (39 mM) in toluene (200 mL) was heated at reflux for 4 hours under N2. The reaction mixture was cooled and the resulting precipitate was isolated by filtration to give 4-trifluoromethylthiobenzamide as a solid: mp 125° C. (The following general procedure was used to synthesize the various substituted thiobenzamides (Tetrahedron 35,2433, (1979)):

Provenance & Evidence