反应详情

To a solution of 20 g (79 mmol) [6-chloro-4-(2-chloro-phenyl)-pyridin-3-yl]-methyl-amine in 200 ml tetrahydrofuran were added dropwise at 0° C. 113 ml (94.8 mmol) of a 0.91 M solution of potassium bis(trimethylsilyl)amide in tetrahydrofuran. The reaction mixture was stirred at room temperature for 30 min. After cooling to 0° C. 27.7 g (86.9 mmol) 2-(3,5-bis-trifluoromethyl-phenyl)-2-methyl-propionyl chloride were added dropwise. The reaction mixture was allowed to warm to room temperature and stirred at room temperature for 1 h. The reaction mixture was treated with 220 ml 1 N sodium hydrogencarbonate solution and extracted with three 200-ml portions of ethyl acetate. The combined organic layers were dried over sodium sulfate and triturated with 150 ml diethylether to give 34.6 g (82%) of the title compound as a white solid.

1. temperatureAfter cooling to 0° C
2. temperatureto warm to room temperature
3. stirringstirred at room temperature for 1 h
4. extractionextracted with three 200-ml portions of ethyl acetate
5. dry with materialThe combined organic layers were dried over sodium sulfate
6. customtriturated with 150 ml diethylether