A specific combination catalyst, Pd(dba)2 and 4-ethyl-1-phospha-2,6,7-trioxabicyclo[2.2.2]octane, effectively catalyzed the addition of tributyl(triethylgermyl)stannane to arylacetylenes in tetrahydrofuran to give (Z)-1-aryl-2-(germyl)-1-(stannyl)ethenes in high yields. The (Z)-1-aryl-2-(germyl)-1-(stannyl)ethenes were subject to the unprecedented germyl 1,2-migration during the destannylation using HI / TBAI in toluene to produce 1-aryl-1-(germyl)ethenes in high yields.
Pd(dBA)2 和 4-乙基-1-
磷杂-2,6,7-三氧杂
双环[2.2.2]辛烷是一种特定的组合催化剂,可有效催化三丁基(三乙基
锗基)
锡与芳基
乙炔在
四氢呋喃中的加成反应,从而高产率地得到 (Z)-1- 芳基-2-(胚芽基)-1-(
锡基)
乙烯。在
甲苯中使用 HI / TBAI 进行去烷基化时,(Z)-1-芳基-2-(胚芽基)-1-(
锡基)
乙烯会发生前所未有的胚芽基 1,2 迁移,从而以高产率生成 1-芳基-1-(胚芽基)
乙烯。