Novel organotin halides. Organometallic substituted stannoles and alkene derivatives with tinchlorine and tinbromine bonds—exceptionally small magnitude of coupling constants ∣1J(119Sn,13C)∣
作者:Bernd Wrackmeyer、Gerald Kehr、Sabine Willbold、Saqib Ali
DOI:10.1016/s0022-328x(01)01316-x
日期:2002.3
Exchange reactions of spirocyclic stannoles with boron, tin and phosphorus halides lead to stannoles 4, 5 and 6, 7, in which the tin atoms bear two chloro or two bromo ligands. The same stannoles 4 and 5 were prepared by 1,1-ethylboration of bis(trimethylsilylethynyl)tin dichloride (8) or -dibromide (9), prepared in situ from tetrakis(trimethylsilylethynyl)tin and tin tetrachlodide or -tetrabromide
用硼,锡和卤化磷螺stannoles的交换反应导致stannoles 4,5和6,7,其中,所述锡原子带有两个氯或两个溴配体。通过由四(三甲基甲硅烷基乙炔基)锡和四氯化锡或四溴化锡就地制备的双(三甲基甲硅烷基乙炔基)锡二氯化物(8)或-二溴化物(9)的1,1-乙基硼化制备相同的锡诺尔4和5。是由三卤化trimethylsilylethynyltin(1,1- ethylboration任一制备与在CC键的取代基的类似的模式烯烃10,11,从而导致12,13)或通过有机锡取代的烯烃与四氯化锡的交换反应(导致14)。所有化合物,其中三甲基甲硅烷和SNX 2部分(在stannoles 4,5)或SNX 3组(在烯烃12,13)是在烯烃碳原子孪位的位置,分解已经在通过消去室温SnX 2(X = Cl,Br)。极小的耦合常数∣ 1 J(119 Sn, 13对于这些化合物观察到C)∣。可比衍生物,