反应详情

温度

0 °C

0.164 g (0.00048 Mol) 4-(2-Isopropenyl-6-pyrrolidin-1-yl-pyridine-4-sulfonyl)-phenylamine were dissolved in ethyl ether (100 ml) and cooled to 0° C. A solution of diazomethane in ethyl ether (30 ml) was carefully added. Upon addition of a catalytic amount of Pd(OAc)2 gas evolution started. The reaction mixture was allowed to warm to ambient temperature and stirred for 30 min. After addition of a few drops of acetic acid the solvent was evaporated and the residue chromatographed on SiO2 with ethyl acetate hexane 1:2. It was obtained 0.136 g (71%) of 4-[2-(1-Methyl-cyclopropyl)-6-pyrrolidin-1-yl-pyridine-4-sulfonyl]-phenylamine as pale yellow cristals; mp.: 235-236° C. (dec.).

1. temperatureto warm to ambient temperature
2. customwas evaporated
3. customthe residue chromatographed on SiO2 with ethyl acetate hexane 1:2