Aqueous Sodium Hydroxide Promoted Cross-Coupling Reactions of Alkenyltrialkoxysilanes under Ligand-Free Conditions
作者:Emilio Alacid、Carmen Nájera
DOI:10.1021/jo702570q
日期:2008.3.1
alkenyltrialkoxysilanes with aryl iodides, bromides, and chlorides are performed on water using sodium hydroxide as activator at 120 °C under normal or microwave heating. This process occurs in the presence of Pd(OAc)2 or 4-hydroxyacetophenone oxime-derived palladacycle 1 as precatalysts under ligand-free conditions with low Pd loadings (0.01−1 mol %) and using tetra-n-butylammonium bromide as additive. Different
Hydrosilylation Reaction Catalysts and Curable Compositions and Methods for Their Preparation and Use
申请人:Dow Corning Corporation
公开号:US20140296468A1
公开(公告)日:2014-10-02
A composition contains (A) a hydrosilylation reaction catalyst and (B) an aliphatically unsaturated compound having an average, per molecule, of one or more aliphatically unsaturated organic groups capable of undergoing hydrosilylation reaction. The composition is capable of reacting via hydrosilylation reaction to form a reaction product, such as a silane, a gum, a gel, a rubber, or a resin. Ingredient (A) contains an iron-organosilicon ligand complex that can be prepared by reacting an iron carbonyl compound and an organosilicon ligand.
Cross-coupling of vinylpolysiloxanes with aryl iodides
作者:Scott E. Denmark、Zhigang Wang
DOI:10.1016/s0022-328x(00)00894-9
日期:2001.4
Commercially available vinylpolysiloxane (1) rapidly undergoes cross-coupling reactions with aryl and alkenyl iodides in the presence of tetrabutylammonium fluoride (two to three equivalents) and Pd(dba)(2) (1-5 mol%) at room temperature to afford coupling products in high yield. This process employs an inexpensive and non-toxic siloxane reagent and shows good functional group compatibility and high stereospecificity. (C) 2001 Elsevier Science B.V. All rights reserved.
Synthesis and structure of well-defined tricarbonyl iron(0) complexes with multivinylsilicon ligands
作者:Agnieszka Kownacka、Ireneusz Kownacki、Maciej Kubicki、Bogdan Marciniec、Richard Taylor
DOI:10.1016/j.jorganchem.2013.11.007
日期:2014.1
In this paper the synthesis of new iron(0) carbonyl complexes with π-bonded ligands containing at least two silicon-vinyl groups of formula [Fe(CO)3L] and [Fe(CO)3}2L′] are described. The synthesis is done via UV light initiated substitution of carbonyl ligands in [Fe(CO)5] or [Fe2(CO)9] precursors by organosilicon dienes, trienes, vinyl functional silicones (L), tetraenes (L′). The spectroscopic
在本文中,新的具有π键配体的新的铁(0)羰基配合物的合成为至少两个分子式为[Fe(CO)3 L]和[Fe(CO)3 } 2 L']的硅乙烯基基团。描述。合成完成后通过在的[Fe(CO)羰基配位体的UV光引发取代5 ]或[铁2(CO)9 ]由有机硅二烯,三烯,乙烯基官能化的硅氧烷(L),四烯(L')的前体。这些新颖的配合物的光谱研究(1 H和13 C NMR)和X射线分析表明,它们都是5个坐标,均表现出两个几何环境,即三角双锥体或四角锥体。