A direct copper-catalyzed route to pyrrolo-fused heterocycles from boronic acids
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