Insertion of an Overcrowded Silylene into Hydro- and Haloboranes: A Novel Synthesis of Silylborane Derivatives and Their Properties
作者:Takashi Kajiwara、Nobuhiro Takeda、Takahiro Sasamori、Norihiro Tokitoh
DOI:10.1021/om049558w
日期:2004.9.1
Silylene complex 3a reacted with BH3·PPh3 as well to give the corresponding silylborane-phosphine complex Tbt(Mes)SiHBH2·PPh3 (12). In addition, silylene 2 thermally generated from the corresponding disilene, Tbt(Mes)SiSi(Mes)Tbt (1), gave 12 when reacted with BH3·PPh3. These results strongly suggested that the reactions of 3 with BH3·THF and BH3·PPh3 proceeded via insertion of a silylene, Tbt(Mes)Si:
稳定的甲硅烷基-异氰化物配合物Tbt(Mes)SiCNAr(3a,Ar = Mes *; 3b,Ar = Tbt; 3c,Ar = Tip; Tbt = 2,4,6-tris [双(三(三甲基甲硅烷基)甲基]苯基, MES =三甲苯基,MES * = 2,4,6-三-叔丁基苯基,提示= 2,4,6-三异丙基)与硼化合物进行了研究。的反应图3a,b与BH 3 ·THF,得到第一稳定silylborane-胩络合物,TBT(MES)SiHBH 2 ·CNAR(图4a,b)。亚甲硅烷基络合物3a与BH 3 ·PPh 3反应还得到相应的甲硅烷基硼烷-膦配合物Tbt(Mes)SiHBH 2 ·PPh 3(12)。此外,当与BH 3 ·PPh 3反应时,由相应的二甲苯Tbt(Mes)Si Si(Mes)Tbt(1)热生成的亚甲硅2生成12。这些结果有力地表明3与BH 3 ·THF和BH 3 ·PPh