作者:Jeanese C. Badenock、Heidi L. Fraser、Gordon W. Gribble
DOI:10.24820/ark.5550190.p010.584
日期:——
We report an approach to the pyrrolo[3,4-b]indole ring system that involves a new synthesis of pyrrolo[3,4b]indol-1(2H)ones, which are known precursors to pyrrolo[3,4-b]indoles. 3-Trifluoroacetylindole is prepared from indole and converted into indole carboxamides upon reaction with lithiated amines. Subsequent C-2 bromination followed by a tri-n-butyltin hydride induced 1,5-radical translocation and
我们报告了一种吡咯并[3,4-b]吲哚环系统的方法,该方法涉及吡咯并[3,4b]吲哚-1(2H)酮的新合成,这是吡咯并[3,4-b]的已知前体吲哚。3-三氟乙酰吲哚由吲哚制备,与锂化胺反应转化为吲哚甲酰胺。随后的 C-2 溴化,然后是三正丁基氢化锡诱导的 1,5-自由基易位和 5-endo-trig 环化得到 3,4-二氢吡咯并[3,4-b]indol-1(2H)-one通过 Kreher 方法用 DIBAL 还原得到吡咯并 [3,4-b] 吲哚。NHNRNHNRNHNRNHOO