反应详情

温度

132.5 °C

4-Iodo-1-(3-methyl-4-nitrobenzyl)-3-trifluoromethyl-1H-pyrazole (2.06 g), copper powder (0.95 g), iodopentafluoroethane (4.92 g) and DMF (13 ml) were set in an autoclave and heated and stirred for 8 hours, maintaining the inside temperature of 130-135° C. After cooling to room temperature, the reaction mixture was diluted with ethyl acetate (50 ml) and an insoluble matter was filtered with Celite and washed with ethyl acetate. The filtrate was concentrated under the reduced pressure and the obtained residue was purified by silica gel column chromatography to obtain 1-(3-methyl-4-nitrobenzyl)-4-pentafluoroethyl-3-trifluoromethyl-1H-pyrazole (1.39 g)

1. temperatureheated
2. temperatureAfter cooling to room temperature
3. filtrationan insoluble matter was filtered with Celite
4. washwashed with ethyl acetate
5. concentrationThe filtrate was concentrated under the reduced pressure
6. customthe obtained residue was purified by silica gel column chromatography