To a solution of 6-mercapto-3,4-dihydro-2H-naphthalen-1-one (3.5 g, 20 mmol) in acetonitrile (100 mL), under nitrogen atmosphere, was added %-chloromethyl-4-methyl-2-(4-trifluoromethylphenyl)thiazole (5.7 g, 20 mmol) followed by cesium carbonate (6.4 g, 20 mmol). The resulting mixture was stirred 16 h, diluted with water (100 mL). The precipitate was collected by filtration, dried, dissolved in EtOAc, and filtered through a plug of silica gel. The filtrate was concentrated under vacuum and the residue purified by recrystallization in iso-propanol to give 5.21 g (61%) of cream colored crystals. (mp 123–124° C.) Analyzed for C22H18F3NOS2: Calcd: C, 60.95%; H, 4.19%; N, 3.23%; Found: C, 60.79%; H, 4.09%; N, 3.09%.
