CAS: 13938-94-8; Formylbis(Triphenylphosphoranyl)Rhodium(Iv) Chloride

上下游产品

4-methylphenylacetaldehyde tris(triphenylphosphine)chlororhodium(I) phenylacetaldehydeWilkinson's catalyst chloro(η-ethylene)bis(triphenylphosphine)rhodium(I) Tetramethyl ethylenetetracarboxylate

Wilkinson'S Catalyst置于一氧化碳体系中,用 苯 用作溶剂,化学反应生成反式-双(三苯基膦)合氯化羰基铑(ⅰ)
参考文献:通过羰基 Mcl(Co)(Pph3)2 的闪光光解探测三配位中间体 Mcl(Pph3)2(m = Rh 或 Ir)的反应动力学
标题:通过羰基 Mcl(Co)(Pph3)2 的闪光光解探测三配位中间体 Mcl(Pph3)2(m = Rh 或 Ir)的反应动力学
摘要:报道了铑 (I) 络合物 Rhcl(Co)(Pph 3/) 2/ 在苯溶液中的动态闪光光解研究.这些结果被解释为不饱和物质 Rhcl(Pph 3/) 2/ (A) 的瞬时形成,这是对威尔金森催化剂反应(如烯烃氢化)的提议机制至关重要的中间体,但尚未之前直接调查的对象.还描述了 A 的二聚化以及该瞬态与 Co,C 2/h 4/,Pph 3/ 和 H 2/ 的反应的动力学.与 H 2/ 反应的二级速率常数为 1.0 X 10 5/ M-1/ S-1/ 与值 > 7 X 10 4/ M 非常吻合-1/ S-1/ 由 Halpern 和 Wong 从 Rhcl(Pph 3/) 3/ 的氢化动力学研究中估计.此外,三苯基膦从 Rhcl(Pph 3/)
Doi:10.1021/ja00236A022

专利信息

专利号:US-H918-H
优先权日:1988-10-05
标题 :Decarbonylation and dehydrogenation of carbohydrates
发明人：ANDREWS MARK A; KLAEREN STEPHEN A
权利人:US ENERGY
摘要:Carbohydrates, especially aldose or ketose sugars, including those whose carbonyl group is masked by hemi-acetal or hemi-ketal formation, are decarbonylated by heating the feed carbohydrate together with a transition metal complex in a suitable solvent. Also, primary alcohols, including sugar alditols are simultaneously dehydrogenated and decarbonylated by heating a mixture of rhodium and ruthenium complexes and the alcohol and optionally a hydrogen acceptor in an acceptable solvent. Such defarbonylation and/or dehydrogenation of sugars provides a convenient procedure for the synthesis of certain carbohydrates and may provide a means for the conversion of biomass into useful products.