Preparation of 2-Silicon-Substituted 1,3-Dienes and Their Diels−Alder/Cross-Coupling Reactions
作者:Ramakrishna R. Pidaparthi、Christopher S. Junker、Mark E. Welker、Cynthia S. Day、Marcus W. Wright
DOI:10.1021/jo901919m
日期:2009.11.6
standard spectroscopic techniques. 2-Dimethylphenylsilyl-1,3-butadiene has also been prepared from chloroprene on an 8-g scale. Diels−Alder reactions of these dienes are reported as well as subsequent TBAF-assisted/Pd-catalyzed Hiyama cross-coupling reactions of those Diels−Alder adducts. Silicon-substituted cycloadducts and cross-coupled products were also characterized by NMR spectroscopy and, in two
通过简单的合成方法,由氯丁二烯以30克的量制备了2-三乙氧基甲硅烷基取代的1,3-丁二烯。然后通过配体交换以10-g的规模制备该主要族元素取代的二烯的Silatrane-和邻苯二酚取代的类似物,并且除标准光谱技术外,还通过X-射线晶体学表征。还由氯丁二烯以8克规模制备了2-二甲基苯基甲硅烷基-1,3-丁二烯。这些二烯的Diels-Alder反应以及这些Diels-Alder加合物的随后TBAF辅助/ Pd催化的Hiyama交叉偶联反应都有报道。硅取代的环加合物和交联产物也通过NMR光谱表征,在两种情况下,通过X射线晶体学表征。