Give me a ring? An efficient approach has been developed for the intramolecular decarboxylative coupling of arene carboxylicacids/esters with aryl bromides catalyzed by palladium (see scheme). From a synthetic viewpoint, this method is highly attractive because the catalyst loading is low, the optimized reaction conditions are mild, and the substrate scope is broad.
From the study of naturally occurring N-allylated phenazines towards new Pd-mediated transformations
作者:Elena Merişor、Uwe Beifuss
DOI:10.1016/j.tetlet.2007.09.045
日期:2007.11
New Pd-mediated reductive heteroannulations of N-allyl diphenylamines accessible through Pd-catalyzed N-arylation and of O-allylethers are reported. (c) 2007 Elsevier Ltd. All rights reserved.