1-Alkyl-3-alkylindolin-2-imine hydrochlorides as useful building blocks in the copper-catalyzed synthesis of polycyclic indoline scaffolds
作者:Can Liu、Haijun Yang、Changjin Zhu、Hua Fu
DOI:10.1039/c9ra00995g
日期:——
efficient copper-catalyzed synthesis of dihydro-6H-indolo[2,3-b]quinoline derivatives has been developed by using 3-alkyl-1-alkylindolin-2-imine hydrochlorides as the building blocks. Furthermore, easy reduction of dihydro-6H-indolo[2,3-b]quinolines with diisobutylaluminum hydride provided tetrahydro-6H-indolo[2,3-b]quinoline derivatives in excellent yields. The present method shows some advantages including
以 3-烷基-1-烷基吲哚啉-2-亚胺盐酸盐为结构单元,开发了一种新型高效的铜催化合成二氢-6 H-吲哚并[2,3 - b ] 喹啉衍生物的方法。此外,用二异丁基氢化铝轻松还原二氢-6 H-吲哚并[2,3 - b ]喹啉,以优异的收率提供了四氢-6 H-吲哚[2,3 - b ]喹啉衍生物。本方法显示出一些优点,包括使用廉价的氯化亚铜作为催化剂和宽官能团的耐受性。