A silica-supported titanium catalyst for heterogeneous hydroamination and multicomponent coupling reactions
作者:Kelly E. Aldrich、Aaron L. Odom
DOI:10.1039/c9dt01835b
日期:——
bound to the surface, on average, through a single O–Si–Ti linkage. This material was tested for its properties as a catalyst for C–N bond forming reactions and was found to be a competent alkyne hydroamination and iminoamination catalyst. For iminoamination, which is the 3-component coupling of an alkyne, primary amine, and isonitrile, this heterogeneouscatalyst was able to carry out some catalyses
Direct Access to POP-Type Osmium(II) and Osmium(IV) Complexes: Osmium a Promising Alternative to Ruthenium for the Synthesis of Imines from Alcohols and Amines
作者:Miguel A. Esteruelas、Nicole Honczek、Montserrat Oliván、Enrique Oñate、Marta Valencia
DOI:10.1021/om200290u
日期:2011.5.9
easy and direct access to POP-type osmium(II) and osmium(IV) complexes, including OsH4dbf(PiPr2)2} (dbf(PiPr2)2 = 4,6-bis(diisopropylphosphine)dibenzofuran), is reported. This tetrahydride derivative is an efficient catalyst for the selective formation of imines fromalcohols and amines with liberation of H2, proving that osmium is a promising alternative to ruthenium for catalysis.
轻松直接访问POP型(II)和(IV)络合物,包括OsH 4 dbf(P i Pr 2)2 }(dbf(P i Pr 2)2 = 4,6-双(二异丙基膦) )二苯并呋喃)。该四氢化物衍生物是从醇和胺中选择性释放出H 2选择性地形成亚胺的有效催化剂,证明是钌的理想替代催化剂。
Tuneable Hydrogenation of Nitriles into Imines or Amines with a Ruthenium Pincer Complex under Mild Conditions
作者:Jong-Hoo Choi、Martin H. G. Prechtl
DOI:10.1002/cctc.201403047
日期:2015.3
selective hydrogenation of aromatic and aliphatic nitriles into amines and imines is described. Using a ruthenium pincer complex, the selectivity towards amines or imines can be controlled by simple parameter changes. The reactions are conducted under very mildconditions between 50–100 °C at 0.4 MPa H2 pressure without any additives at low catalytic loadings of 0.5–1 mol %, which results in quantitative conversions
描述了将芳族和脂族腈选择性氢化为胺和亚胺的方法。使用钌钳配合物,可以通过简单的参数更改来控制对胺或亚胺的选择性。反应在0.4 MPa H 2压力下在50-100°C的非常温和的条件下进行,在0.5-1 mol%的低催化负载下没有任何添加剂,从而实现了定量转化和高选择性。
Reduction of Imines with Zinc Borohydride Supported on Silica Gel. Highly Stereoselective Synthesis of Substituted Cyclohexylamines
作者:Brindaban C. Ranu、Arunkanti Sarkar、Adinath Majee