The reactions of 3-allenyl 3-hydroxyoxindoles with a variety of halogenated reagents in the presence of catalytic amounts of precious metal salts were explored. Both, rearrangement and oxycyclization reactions to give 4-(1-halovinyl)-quinolinediones or spirocyclic halooxindoles, respectively, are competitive pathways. The kind of functionalization is substrate and reaction conditions dependent.
研究人员探讨了 3-烯基 3-羟基
吲哚与多种卤代试剂在催化量贵
金属盐存在下的反应。重排反应和氧环化反应分别生成 4-(1-卤
乙烯基)-
喹啉二酮或螺环卤代
吲哚,这两种反应都是竞争性途径。官能化的种类取决于底物和反应条件。