反应详情

2.0 g (0.0058 mol) of 4-chloro-3-(2-methyl-6-trifluoromethylpyridine-3-carbonyl)-bicyclo[3.2.1]oct-3-en-2-one, 0.07 g of dimethylaminopyridine (0.00058 mol) and 1.61 ml of triethylamine are dissolved in 15 ml of methylene chloride. At 25° C., 0.092 g (0.0064 mol) of 4-chlorothiophenol are added. After 2 hours at 22° C., the reaction mixture is evaporated and purified over silica gel (hexane/ethyl acetate 2:1). Recrystallization (hexane/acetic acid at −25° C.) gives pure 4-(4-chlorophenylsulfanyl)-3-(2-methyl-6-trifluoromethylpyridine-3-carbonyl)bicyclo[3.2.1]oct-3-en-2-one: m.p. 130-131 ° C.

1. customthe reaction mixture is evaporated
2. custompurified over silica gel (hexane/ethyl acetate 2:1)
3. customRecrystallization (hexane/acetic acid at −25° C.)