反应详情

Perfluorobutanesulfonyl fluoride (0.392 ml, 2.004 mmol) and Et3N (0.419 ml, 3.01 mmol) in abs. dichloromethane (10 ml) was added dropwise to the intermediate ethyl 1-benzyl-5-fluoro-6-hydroxy-2,3-dihydro-1H-inden-2-ylcarbamate (330 mg, 1.002 mmol), dissolved in dichloromethane and stirred at room temperature over night. Evaporated and purified by flash silica gel chromatography on 12 g SiO2-cartridge using dichloromethane to afford 3-benzyl-2-(ethoxycarbonylamino)-6-fluoro-2,3-dihydro-1H-inden-5-yl 1,1,2,2,3,3,4,4,4-nonafluorobutane-1-sulfonate as a yellow product. M=389 mg (63%)

1. customEvaporated
2. custompurified by flash silica gel chromatography on 12 g SiO2-cartridge