The reactions of dialkylgallium hydrides with tert-butylethynylbenzenes—a systematic investigation into the course of hydrogallation reactions
作者:Werner Uhl、Michael Claesener、Sima Haddadpour、Beate Jasper、Alexander Hepp
DOI:10.1039/b614003c
日期:——
the formation of one-dimensional coordination polymers. In contrast secondary reactions with the release of the corresponding trialkylgallium derivatives GaR(3) (R = Et, nPr, iPr, CH(2)tBu, tBu) were observed for all hydrogallation reactions involving the trisalkyne 1,3,5-tris(tert-butylethynyl)benzene. A similar reaction was observed upon treatment of the 1,4-bisalkyne with a dialkylgallium hydride
双和三(叔丁基乙炔基)苯与氢化二烷基镓的反应可提供两种不同类型的产物。1,4-二(叔丁基乙炔基)苯和二烷基氢化镓R(2)GaH带有相对较小的取代基(R = Et,nPr)得到预期的加成产物,每个C三键C三键插入Ga-H键。完整的GaR(2)基团连接到苯环的α位上的碳原子上,并且分子间的Ga-C相互作用导致形成一维配位聚合物。相比之下,对于涉及三炔1,3,5-三(所有)的加氢加氢反应,观察到具有相应三烷基镓衍生物GaR(3)(R = Et,nPr,iPr,CH(2)tBu,tBu)释放的二级反应。叔丁基乙炔基)苯。用带有相对大取代基的氢化二烷基镓处理1,4-双炔烃时,观察到类似的反应(R =新戊基)。在所有这些情况下,形成环烷型分子,两个苯环之间的桥连位置带有两个或三个镓原子。