A range of 3,3-disubstituted oxindoles accessed using para-quinone methides derived from isatins with thiols were used for the formation of unsymmetrical disulfides, and 3,3-disubstituted oxindoles with a chiral quaternary carbon center and unsymmetric disulfides could also be directly obtained with high selectivities catalyzed by chiral phosphines in one step.
使用衍生自
靛红与巯基的对醌甲基化物获得的一系列3,3-二取代的羟
吲哚被用于形成不对称的二
硫化物,也可以直接获得具有手性季碳中心和不对称的二
硫化物的3,3-二取代的羟
吲哚。一步被手性膦催化的高选择性。