作者:Andrew J. Cornish、Michael F. Lappert、Grace L. Filatovs、Terence A. Nile
DOI:10.1016/s0022-328x(00)81042-6
日期:1979.6
The catalytic activity of tris(pentanedionato)rhodium(III), (or rhodium(III) acetylacetonate) (I) has been investigated for the hydrosilylation of a variety of organic substrates: alkenes, terminal or internal acetylenes, conjugated dienes, or α,β-unsaturated carbonyls or nitriles. With PhCHCH2 or PhCH2CHCH2, ω-substitution was unexpectedly observed, as well as addition. Compound I is an active hydrosilylation
hydrosilylated in the absence of transition metals by using specific organic solvents as both reaction media and organocatalysts. A highly selective reaction with successful catalyst recycling could be performed by using propylene carbonate as the reaction medium. hydrosilylations - homogeneouscatalysis - solventeffects - dienes - silanes
Regio- und stereoselektive hydrosilylierung von isopren mit rhodium(I)- und rhuthenium(II)-komplexen ungesättigter N-haltiger steuerliganden
作者:Monika Brockmann、Heindirk tom Dieck、Ingo Kleinwächter
DOI:10.1016/s0022-328x(00)99636-0
日期:1986.8
The catalysis of isoprene hydrosilylation with different silanes HSiR3″ (R″ = Et, Ome, OEt), in the presence of rhodium(I) or ruthenium(II) complexes with unsaturated N-containing controlling ligands as co-catalysts, occurs under mild conditions and gives with high selectivity (Z)-2-methyl-1-silyl-2-butenes (VI), 2-methyl-4-silyl-2-butenes (VIII), 2-methyl-4-silyl-1-butenes (IX) or the 3-methyl-4-silyl-1-butenes
用不同的硅烷氢化硅烷化异戊二烯的HSIR催化3 “(R”=的Et,青梅,OET),铑(I)或钌的存在下(Ⅱ)配合物与不饱和Ñ含控制配位体作为助催化剂,下发生温和的条件,并具有高选择性(Z)-2-甲基-1-甲硅烷基-2-丁烯(VI),2-甲基-4-甲硅烷基-2-丁烯(VIII),2-甲基-4-甲硅烷基-1 -丁烯(IX)或3-甲基-4-甲硅烷基-1-丁烯(X)。因此,通过改变金属和控制配体,可以将除末端sp 2 -C原子之外的5个Si异构体中的4个作为催化的主要产物(51-87%)。通过催化首次获得手性X。全1给出了化合物VIII–X的1 H NMR归属。