反应详情

To a stirred solution of 1-[3-(ethyloxy)-4-nitrophenyl]-4-(4-piperidinyl)piperazine (0.28 g, 0.83 mmol) and 1-iodo-2-fluoroethane (0.29 g, 1.67 mmol) in acetonitrile (17 mL) was added Na2CO3 (0.106 g, 1.0 mmol). The reaction was stirred under N2 and heated to reflux for 4 h. The temperature was lowered to 75° C. and the reaction was stirred overnight (approximately 16 h). The reaction was cooled to rt and then concentrated under vacuum. The residue was purified by silica gel chromatography to give the title compound of step B (206 mg, 0.54 mmol, 65%) as a yellow solid. MS (ESI): 381 [M+H]+.

1. temperatureheated
2. temperatureto reflux for 4 h
3. customwas lowered to 75° C.
4. stirringthe reaction was stirred overnight (approximately 16 h)
5. concentrationconcentrated under vacuum
6. customThe residue was purified by silica gel chromatography