A stereospecific synthesis of conjugated (, )- and (, )-alikadienes by a palladium-catalyzed cross-coupling reaction of 1-alkenylboranes with 1-alkenyl bromides
作者:Norio Miyaura、Hiroshi Suginome、Akira Suzuki
DOI:10.1016/0040-4039(81)80166-9
日期:1981.1
The reactions of ()-1-alkenyldisiamylboranes with ()- or ()-1-alkenyl bromides in the presence of a catalytic amount of tetrakis(triphenylphosphine)palladium and sodium ethoxide gave the corresponding conjugated (,)- or (,)-alkadiene with high stereospecificity. The reactions of ()-1-alkenyl-1,3,2-benzodioxaboroles with ()- or ()-1-alkenyl bromides similarly gave the corresponding coupled products
的(反应)-1- alkenyldisiamylboranes用() - (或)-1-烯基溴化物在四(三苯膦)钯和乙醇钠催化量的存在下得到相应的缀合(,) -或(,) -具有高立体定向性的链二烯。()-1-烯基-1,3,2-苯并二氧杂硼杂环戊烷与()-或()-1-烯基溴化物的反应类似地给出相应的偶联产物,同时保留了起始烯基硼烷和烯基溴化物的构型。