作者:E.Sh. Finkel'shtein、N.V. Ushakov、E.B. Portnykh
DOI:10.1016/0304-5102(92)80152-7
日期:1992.10
siloxane and hydride substituents, as well as unsaturated silacarbon heterocycles, mono- and diallylgermanes, were used as substrates. Heterogeneous Re2O7/Al2O3SnBu4 and Re2O7/Al2O3PbEt4 catalysts showing good activity in metathesis were examined. Except for hydrides, allyl- and butenylsilanes or germanes were active in metathesis regardless of the nature of the substituents at the metal atom. On the
在of存在下,在氧化铝复分解催化剂上,研究了含SiC,GeC,SiSi,SiH,SiOSi和SiOC键的各种烯烃的行为。带有烷基,烯基,芳基,芳烷基,硅杂环烷基,硅氧烷和氢化物取代基的单乙烯基,烯丙基和丁烯基硅烷,以及不饱和硅碳杂环,单烯丙基和二烯丙基锗烷被用作底物。异构重新2 ö 7 / Al的2 ö 3 SnBu 4和R e 2 ö 7 / Al的2 ö 3 PbEt 4研究了在复分解中显示出良好活性的催化剂。除氢化物外,烯丙基和丁烯基硅烷或锗烷在复分解中均具有活性,而与金属原子上取代基的性质无关。另一方面,所用的所有乙烯基硅烷在反应中实际上是惰性的。除乙烯基衍生物外,二烯基和聚烯基硅烷,乙硅烷,二硅氧烷和锗烷的复分解均通过分子间和分子内途径发生。这些被用于开发一种新颖有效的合成方法,用于生产线性1,4-双(三有机基甲硅烷基)-(或胚芽)-丁-2-烯(包括在硅上具有