Single isomer trisubstituted olefins bearing alkyl groups
摘要:
E-beta-Chloro-alpha-iodo-alpha,beta-unsaturated esters were converted to single isomer trisubstituted olefins bearing alkyl substituents by using and alkyl-Suzuki cross coupling. The process was highly selective, and the products in all cases were isolated as single isomers. Mechanistic investigations indicated that this process transfers a hydrogen from water to the alpha-position of the substrate, and then an alkyl group is introduced to the beta-position of the intermediate template while replacing a chloride. (C) 2010 Elsevier Ltd. All rights reserved.