Synthesis of hindered biphenyls by sequential non-transition metal-catalyzed reaction/palladium-catalyzed cross-couplings
摘要:
The sequential reaction of 1,2-dihalobenzenes with aryllithiums followed by palladium-catalyzed cross-coupling reactions with Grignard reagents and arylboronic acids is described. This sequential reaction provides a convenient and expeditious access to tri-ortho substituted biaryl derivatives. (c) 2008 Elsevier Ltd. All rights reserved.