Highly efficient Ag(i)-catalyzed regioselective tandem synthesis of diversely substituted quinoxalines and benzimidazoles in water
作者:Vineeta Rustagi、Trapti Aggarwal、Akhilesh K. Verma
DOI:10.1039/c1gc15346c
日期:——
A green and operationally simple approach for the diverse synthesis of fused quinoxalines and benzimidazoles from o-alkynylaldehydes and amines having an N-tethered nucleophile using Ag(I) as the catalyst in water, is described. The X-ray crystallographic studies confirmed the proposed mechanistic pathway and the cyclized product.
Facile Assembly of Fused Isoquinolines by Gold(I)-Catalyzed Coupling-Cyclization Reactions between o-Alkynylbenzaldehydes and Aromatic Amines Containing Tethered Nucleophiles
作者:Nitin T. Patil、Anil Kumar Mutyala、Pediredla G. V. V. Lakshmi、Penmatcha V. K. Raju、Balasubramanian Sridhar
DOI:10.1002/ejoc.200901364
日期:2010.4
A gold(I)-catalyzed, operationally simple coupling-cyclization technique was developed for the synthesis of isoquinoline-fused polycyclic compounds. The reaction makes use of two coupling partners such as o-alkynylbenzaldehydes and aromaticamines having tetherednucleophiles. The reaction is easy to perform, broad in scope, and allows the generation of a number of biologically important heterocyclic