作者:Ramsay E. Beveridge、Brian S. Gerstenberger
DOI:10.1016/j.tetlet.2011.11.091
日期:2012.2
related pyrrolo-fused heterocycles from boronic acids, DBAD (di-tert-butyl-diazodicarboxylate) and enolizable aldehydes and ketones is presented. The reaction proceeds via a one-pot four-step cascade sequence with key steps involving a copper-catalyzed boronic acid coupling to DBAD and a Fischer indolization providing access to a variety of pharmaceutically interesting heterocycles including pyrrolo-pyridines
提出了从硼酸,DBAD(二叔丁基重氮二羧酸二叔丁酯)和可烯化的醛和酮制备氮杂吲哚和相关的吡咯并稠合杂环的简便方法。反应通过一锅四步的级联序列进行,关键步骤包括铜催化的硼酸与DBAD的偶联和费歇尔吲哚化作用,从而可利用各种药学上感兴趣的杂环,包括吡咯并吡啶,-嘧啶,-喹啉,易得的氮杂-芳基硼酸前体中的-和-异喹啉。