The reaction between 3-alkylideneoxindoles 1 and 3-aminocyclohex-2-enone 2 was studied, and an efficient synthesis of 1,3,1′,5′,6′,7′-hexahydro-3,3′-biindolyl-2,4′-dione derivatives was developed by a sequential Michael addition followed by intramolecular condensation catalyzed by nickel dichloride hexahydrate. The reaction mechanism is discussed.
研究了3-亚烷基氧杂
吲哚 1 与3-
氨基环己-2-烯酮 2 之间的反应 ,并有效合成了1,3,1',5',6',7'-六氢-3,3'-联
吲哚基-2通过顺序的迈克尔加成反应,然后通过二
水合六
氯化镍催化的分子内缩合反应,得到了4,2'-二酮衍
生物。讨论了反应机理。