Someoxindolesderivatives are synthesized from the condensation of indoles with isatins in the presence of green and recycable catalyst [(CH2)4SO3HMIM][HSO4] in water at room temperature.
室温下,在绿色和可回收催化剂[(CH 2)4 SO 3 HMIM] [HSO 4 ]存在下,吲哚与靛红的缩合反应合成了一些羟吲哚衍生物。
Efficient synthesis of bis-indolyloxindoles from (phenylimino)indolin-2-ones and 1H-indole catalyzed by p-toluenesulfonic acid
p-Toluenesulfonic acid (p-TSA) efficiently catalyzed the reaction of (phenylimino)indolin-2-ones with 1H-indole in dichloromethane at room temperature to afford 3,3-di(indolyl)indolin-2-ones in 2-3 min with high yields.