Disupersilyldisilane R*X2Si_SiX2R*: Darstellung, Charakterisierung und Strukturen; sterische Effekte der Substituenten
作者:N Wiberg
DOI:10.1016/s0022-328x(00)00442-3
日期:2000.10.20
Disupersilyldisilanes R*X2SiSiX2R* (R*=supersilyl=Sit-Bu3; two diastereomers in case of R*XX′SiSiX′XR*) are prepared in organic solvent (i) by dehalogenations of supersilylhalosilanes with Na, NaC10H8 or NaR*; (ii) by reactions of disupersilylhalodisilanes with H− (Hal/H exchange); (iii) by reactions of disupersilyldisilanes with Hal2 (H/Hal exchange); (iv) by reactions of disupersilylhalodisilanes
Disupersilyldisilanes R * X 2 SiSiX 2 R *(R * = supersilyl =硅吨-Bu 3 ;中的R的情况下,两种非对映*XX'SiSiX'XR*)在有机溶剂(I),通过制备dehalogenations具有Na,NaC 10 H 8或NaR *的超甲硅烷基卤硅烷; (ii)通过用H disupersilylhalodisilanes的反应- (哈尔/ H交换); (iii)通过二超甲硅烷基乙硅烷与Hal 2的反应(H / Hal交换);(iv)首先使二超甲硅烷基卤代二硅烷与NaR *(Hal / Na交换),然后与用于质子化,烷基化,甲硅烷基化的试剂(Na / H,Na / Me,Na / SiMe 3交换)反应;或(v)通过二超甲硅烷基二ilenes(此处为R *PhSiSiPhR*)与HHal或Hal反应2(附加产品的形成)。如所讨论的,(29六的Si)的2的R基团*