Synthetic approaches to activated pyrrolo[3,2,1-hi]indoles: synthesis of 6,8-dimethoxy pyrrolo[3,2,1-hi]indole
作者:Jumina、Naresh Kumar、David St.C. Black
DOI:10.1016/j.tet.2009.01.010
日期:2009.3
6,8-Dimethoxypyrrolo[3,2,1-hi]indole 25 has been formed by the dehydrogenation of the related tetrahydro compound 23, which in turn was formed by reduction of the related isatin 22. Approaches to achieve the cyclisation of N-hydroxyethylindoles, N-dimethylacetamidoindoles, and C7-substituted chloroacetylindoles were unsuccessful.
通过相关四氢化合物23的脱氢反应形成了6,8-二甲氧基吡咯并[3,2,1- hi ]吲哚25,该四氢化合物23又通过相关的靛红22的还原而形成。实现N-羟乙基吲哚,N-二甲基乙酰氨基吲哚和C 7取代的氯乙酰吲哚的环化的方法是不成功的。