作者:Zobida Elkhayat、Imad Safir、Maurizio Aquino、Manuel Perez、Zoila Gandara、Pascal Retailleau、Siméon Arseniyadis
DOI:10.1002/ejoc.200900242
日期:2009.6
A Pb(OAc)4-mediated, path selective, modular domino transformation using an octaline diol framework as a probe is described. Alteration of the nature of the angular substituent or the length of the tether chain controls the effectiveness of the “ring-expanded” versus “ring-retained” domino path. The solvent can modify the behaviour of the transient intermediates and the reaction time is reduced under
描述了使用辛二醇框架作为探针的 Pb(OAc)4 介导的、路径选择性的、模块化的多米诺骨牌转换。角取代基的性质或系链长度的改变控制了“环扩展”与“环保留”多米诺骨牌路径的有效性。溶剂可以改变瞬态中间体的行为,并在微波加热下缩短反应时间,而水在用作溶剂时完全促进氧化/周环转化,导致半级联中间体。无论取代基(烷基、烯基、烷氧基、酰氧基)和溶剂的性质如何,所有二醇底物都与 PhI(OAc)2 反应,仅提供作为唯一多米诺产品的间断级联反应。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)