Synthesis of 2,3,5-Substituted 1H-Pyrroles by a Cp2TiCl2-catalyzed Multicomponent Reaction of Terminal Alkynes with Nitriles and EtAlCl2
摘要:
A one-pot synthesis of 2,3,5-substituted 1H-pyrroles with yields of 37-77% by the reaction of terminal alkynes with aromatic and heteroaromatic nitriles in the presence of EtAlCl2 and the Cp2TiCl2 catalyst has been developed. Spectral-luminescent properties were studied and intense photoluminescence of 2,3,5-triphenyl-1H-pyrrole, 3-(2-phenylethyl)-2,5-diphenyl-1H-pyrrole, and 2,5-diphenyl-3-(pyridin-2-yl)-1H-pyrrole had been detected.
Heteroannulation of chromium carbene complexes. A novel and efficient pyrrole synthesis
作者:Vera Dragisich、Christopher K. Murray、Benjamin P. Warner、William D. Wulff、Dominic C. Yang
DOI:10.1021/ja00159a058
日期:1990.1
The heteroannulations of imino complexes are remarkably efficient and general. They are very highly chemoselective, giving only pyrrole products, and also highly regioselective, giving only a single pyrrole with terminal acetylenes