A Ridge Walk between Reaction Modes: An Unprecedented Pd-Catalyzed Domino Sequence of Diynyl-Substituted Bromoarenes
摘要:
Diynyl-substituted bromoarenes underwent a novel Pd-catalyzed domino reaction to provide benzofurans, pyridinofurans, isochromenes, and indole derivatives. Slight changes of the substrate push the reaction In another direction resulting in benzene annulation.
Hybrids of sugars and aromatics: A Pd-catalyzed modular approach to chromans and isochromans
作者:Markus Leibeling、Dennis C. Koester、Martin Pawliczek、Daniel Kratzert、Birger Dittrich、Daniel B. Werz
DOI:10.1016/j.bmc.2010.03.004
日期:2010.6.1
of our synthetic approach is the annelation of the benzene moiety via a highly efficient Pd-catalyzed domino reaction. This powerful approach led to a small library of highly substituted chromans and isochromans by making use of a variety of different diynes and bromoglycals. We investigated several Pd-catalysts in order to improve the yields and to enlarge the scope of the domino reaction. Furthermore