Ruthenium-Catalyzed Highly Chemoselective Hydrogenation of Aldehydes
作者:Lucia Bonomo、Laurent Kermorvan、Philippe Dupau
DOI:10.1002/cctc.201500006
日期:2015.3
[dppe=1,2‐bis(diphenylphosphino)ethane] complex underbase‐free conditions allowed highly efficient and selective hydrogenation of aldehydes in the presence of ketones in addition to olefins. Even in the case of highly sensitive 1,6‐ketoaldehydes, the desired ketoalcohols were obtained in high yields with 94–99 % overall selectivity at complete aldehyde conversion with a TON up to 30 000. The lack of requirement
在无碱条件下使用[(乙二胺)(dppe)Ru(OCO t Bu)2 ] [dppe = 1,2-双(二苯基膦基)乙烷]配合物可以在存在下列条件的情况下对醛进行高效和选择性的加氢除烯烃外的酮。即使在高度敏感的1,6-酮醛的情况下,也可以在高醛的情况下以高达30000 TON的总醛转化率获得高产率,94-99%的总选择性的酮醇。对强碱性助催化剂的需求不足极性溶剂和质子传递溶剂还可以有效且高度化学选择性地还原带有其他官能团的醛,例如环氧化物,羧酸,酯,酰胺和腈,从而强调了催化剂的潜在合成用途。
Ruthenium‐Catalyzed C‐C Coupling of Terminal Alkynes with Primary Alcohols or Aldehydes: α,β‐Acetylenic Ketones (Ynones) via Oxidative Alkynylation
作者:Eliezer Ortiz、Madeline M. Evarts、Zachary H. Strong、Jonathan Z. Shezaf、Michael Joseph Krische
DOI:10.1002/anie.202303345
日期:——
The first metal-catalyzed oxidative alkynylations of primary alcohols or aldehydes to form α,β-acetylenicketones (ynones) are described. Deuterium labelling studies corroborate a novel reaction mechanism in which alkyne hydroruthenation forms a transient vinylruthenium complex that deprotonates the terminal alkyne to form the active alkynylruthenium nucleophile.
Highly Chemoselective Reduction of Aldehyde Function Catalyzed by Polymer-Bound Rh6 Cluster Complex under Water-Gas Shift Reaction Conditions
作者:Tomoo Mizugaki、Kohki Ebitani、Kiyotomi Kaneda*
DOI:10.1016/s0040-4039(97)00571-6
日期:1997.4
A functionalized polymer-bound Rh-6 cluster complex showed high catalytic activity for chemoselective reduction of aldehydes in the presence of CO and H2O. The reaction system consists of the triphase, which makes work-up procedure simple. (C) 1997 Elsevier Science Ltd.
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作者:G. Yu. Ishmuratov、R. Ya. Kharisov、M. P. Yakovleva、O. V. Botsman、R. R. Muslukhov、G. A. Tolstikov
DOI:10.1023/a:1012313114674
日期:——
A procedure was proposed for direct reduction of peroxide products resulting from ozonolysis of 1-methylcycloalkenes to the corresponding hydroxyketones by the action of sodium triacetoxohydridoborate.
Chemoselective Transfer Hydrogenation of α,β-Unsaturated Aldehydes to Allylic Alcohols Using Formic Acid Catalyzed by Polymer-Bound Rh Carbonyl Clusters