Regioselective synthesis of substituted pyrrolopyridines based on Pd(II)-mediated cross coupling and base induced heteroannulation
摘要:
Novel pyrrolopyridines have been synthesized by an efficient, regioselective and catalytic method from commercially available and inexpensive 3-aminopyridine or 2-aminopyridine. (c) 2007 Elsevier Ltd. All rights reserved.
The dibenzoazepinone framework has been synthesized through a palladium-mediated Sonogashira cross-coupling followed by a reductive Fleck cyclization. The reactions are simple. straightforward, and have been carried Out Under ligand-free conditions.
Regioselective synthesis of substituted pyrrolopyridines based on Pd(II)-mediated cross coupling and base induced heteroannulation
作者:K.C. Majumdar、S. Mondal
DOI:10.1016/j.tetlet.2007.07.170
日期:2007.9
Novel pyrrolopyridines have been synthesized by an efficient, regioselective and catalytic method from commercially available and inexpensive 3-aminopyridine or 2-aminopyridine. (c) 2007 Elsevier Ltd. All rights reserved.
A convenient synthesis of pyrrolopyridines and 2-substituted indoles by gold-catalyzed cycloisomerization
作者:K.C. Majumdar、S. Samanta、B. Chattopadhyay
DOI:10.1016/j.tetlet.2008.10.013
日期:2008.12
We have developed a gold-catalyzed intramolecular cyclization of variously substituted acetylenic amines under mild conditions, which yields pyrrolopyridines and 2-substituted indoles, quantitatively. The cycloisomerization of acetylenic amines was achieved with AuCl3 as catalyst without the use of base, acid or N-protecting group.