Six- and Eightfold Palladium-Catalyzed Cross-Coupling Reactions of Hexa- and Octabromoarenes
作者:Baldur Stulgies、Peter Prinz、Jörg Magull、Karsten Rauch、Kathrin Meindl、Stephan Rühl、Armin de Meijere
DOI:10.1002/chem.200400723
日期:2005.1
Palladium-catalyzedsixfold coupling of hexabromobenzene (20) with a variety of alkenylboronates and alkenylstannanes provided hexaalkenylbenzenes 1 in up to 73 % and 16 to 41 % yields, respectively. In some cases pentaalkenylbenzenes 21 were isolated as the main products (up to 75 %). Some functionally substituted hexaalkenylbenzene derivatives containing oxygen or sulfur atoms in each of their six