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。