反应详情

Into a 200 ml four-necked flask equipped with a thermometer, a stirrer, a dropping funnel and a N2 gas supply tube, a N2 gas was introduced so that the interior of the flask became a N2 atmosphere. 40 ml of dimethylformamide and 2.4 g (61.6 mmol) of sodium hydride (62% oil suspension) were charged, and a solution comprising 10 g (56 mmol) of 2-(4-fluorophenyl)-2-(N,N-dimethylamino)acetonitrile and 10.9 g (56 mmol) of 4-(trifluoromethyl)benzyl chloride, was dropwise added over a period of one hour at from 5 to 10° C. under cooling with ice water and then further reacted at from 20 to 30° C. for one hour. After completion of the reaction, 200 ml of water was added, and the mixture was extracted with 200 ml of ethyl acetate. The extract was washed with a 5% sodium hydrogen carbonate aqueous solution and water and then dried over anhydrous sodium sulfate. Ethyl acetate was distilled off, and the obtained oily substance was distilled under reduced pressure to obtain 15.3 g (yield: 88.3%) of the desired compound (boiling point: 130-135° C./0.6 KPa). The NMR spectrum data thereof were as follows.

1. customInto a 200 ml four-necked flask equipped with a thermometer, a stirrer, a dropping funnel
2. customfurther reacted at from 20 to 30° C. for one hour
3. additionwas added
4. extractionthe mixture was extracted with 200 ml of ethyl acetate
5. washThe extract was washed with a 5% sodium hydrogen carbonate aqueous solution and water
6. dry with materialdried over anhydrous sodium sulfate
7. distillationEthyl acetate was distilled off
8. distillationthe obtained oily substance was distilled under reduced pressure