Palladium-Catalyzed C−C Bond Formation: Synthesis of 1,1-Dialkylbuta-1,3-dienes and β-Phenylstyrenes via Organoboron Intermediates
作者:Annamaria Deagostino、Cristina Prandi、Chiara Zavattaro、Paolo Venturello
DOI:10.1002/ejoc.200300136
日期:2003.7
PdL4-ArX (Suzuki−Miyaura cross-coupling conditions). In particular, unsaturated acetals yield gem-dialkylbutadienes via the formation of an intermediate π-allyl complex that facilitates an anionotropic alkyl migration; in the case of α-phenyl derivatives, the corresponding cross-coupling products are recovered. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003)
在试剂系统 PdL4-ArX(Suzuki-Miyaura 交叉偶联条件)存在下,α,β-不饱和和 α-苯基缩醛在用 LIC-KOR 超强碱和三烷基硼烷处理时表现出不同的反应性。特别是,不饱和缩醛通过形成中间体 π-烯丙基复合物产生墒二烷基丁二烯,促进阴离子性烷基迁移;对于 α-苯基衍生物,回收相应的交叉偶联产物。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003)