Reactions of Allenyltri-<i>n</i>-butylstannane with Halides of Phosphorus, Arsenic, Antimony, Germanium, Tin, and Boron. Preparation of Propargylic and/or Allenic Derivatives
作者:Jean-Claude Guillemin、Karine Malagu
DOI:10.1021/om990543l
日期:1999.12.1
tetrachloride to give only the allenic product, even when the reaction was performed and analyzed at low temperature (−80 °C). The propargylic intermediate was observed with the antimony and tin compounds when a substituted derivative (e. g. Vi2SbCl, ViSnCl3) was used. The reduction of the propargylic halide products prior to their isomerization gave the corresponding primary propargylic phosphine, arsine
烯丙基三正丁基锡烷与磷或三卤化砷以及四氯化锗的反应生成相应的炔丙基卤代膦,a或锗烷。加热时,炔丙基产物部分(P,Ge)或完全(As)重排为相应的烯基衍生物,即热力学产物。即使在低温(-80°C)下进行反应和分析时,烯丙基或炔丙基锡也与较强的路易斯酸性卤化物,例如卤化硼,三氯化锑或四氯化锡反应,仅生成烯基产物。当取代的衍生物(例如Vi 2 SbCl,ViSnCl 3)。炔丙基卤化物产物异构化之前的还原得到相应的伯炔丙基膦,ine,锗烷和锡烷。