Tris(hydridosilylethyl)boranes: highly reactive synthons for polymeric silicon compounds
作者:Markus Weinmann、Thomas W Kamphowe、Peter Fischer、Fritz Aldinger
DOI:10.1016/s0022-328x(99)00499-4
日期:1999.12
the synthesis of tris(hydridosilylethyl)boranes B[C2H4Si(CH3)nH3−n]3 (C2H4=CHCH3, CH2CH2; n=0, 1, 2; 5a–c) are reported. In the first route, tris(chlorosilylethyl)boranes B[C2H4Si(CH3)nCl3−n]3 (n=0, 1, 2; 3a–c) are reacted with LiAlH4 in diethyl ether solution. Compounds 3a–c are prepared by hydroboration of the respective vinyl chlorosilanes (H2CCH)Si(CH3)nCl3−n (n=0, 1, 2; 1a–c) with borane dimethylsulfide
合成三(氢硅烷基乙基)硼烷B [C 2 H 4 Si(CH 3)n H 3- [ n ] 3(C 2 H 4 = CHCH 3,CH 2 CH 2 ; n = 0,1,2 ; 5a–c)被报告。在第一条路线中,三(氯甲硅烷基乙基)硼烷B [C 2 H 4 Si(CH 3)n Cl 3- [ n ] 3(n = 0,1,2; 3a–c)与LiAlH 4反应在乙醚溶液中。化合物3A-C由相应乙烯基氯硅烷的制备硼氢化(H 2 CCH)的Si(CH 3)ñ氯-3- Ñ(Ñ = 0,1,2; 1A-1C)用甲硼烷二甲基硫醚,BH 3 · S(CH 3)2。氢基乙烯基硅烷的硼氢化(H 2 CCH)的Si(CH 3)ñ ħ 3- Ñ(Ñ = 0,1,2;图6A-C )与BH 3 ·S(CH 3)2代表替代路线,可产生5a–c的高得多的产量。中间体6a-c是从1a-c和LiAlH 4在乙醚溶液中获得的