作者:Malcolm M Campbell、Nicholas Cosford、Li Zongli、Malcolm Sainsbury
DOI:10.1016/s0040-4020(01)90049-3
日期:1987.1
The syntheses of 3-(2-pyrrolyl)- and 3-(2-furanyl)-indoles are described via the ring-closure of 2-(2-nitrophenylethenyl)-pyrroles or -furans, respectively, with triethylphosphite. The necessary starting compounds are obtained by Lewis acid mediated Michael type addition reactions of either pyrroles or furans to β-nitrostyrene, followed by bromination/dehydrobromination. The ethenylpyrroles may also
3-(2-吡咯基)-和3-(2-呋喃基)-吲哚的合成分别通过2-(2-硝基苯基乙烯基)-吡咯或-呋喃与亚磷酸三乙酯的闭环来描述。通过路易斯酸介导的吡咯或呋喃与β-硝基苯乙烯的迈克尔型加成反应,然后进行溴化/脱氢溴化反应,可获得必要的起始化合物。乙烯基吡咯也可以通过将吡咯类似地添加到β-溴-β-硝基苯乙烯中并将产物脱氢溴化来制备。