Synthesis and biological activity of 1,5-diaryl-3-arylamino-4-carboxymethyl-2,5-dihydro-2-pyrrolones and 1,5-diaryl-4-carboxymethyltetrahydropyrrole-2, 3-diones
Oxygenation of aldimines and deoxygenation of nitrones on irradiated TiO2
摘要:
While aldimines have been selectively oxidized to nitrones in TiO2 suspended acetonitrile solution in the presence of O-2 upon irradiation, nitrones are reduced to their deoxygenated derivatives with retention of C=N by TiO2 photocatalysis under a nitrogen atmosphere. (C) 1998 Elsevier Science Ltd. All rights reserved.
Transfer Hydrogenation of Carbonyl Groups, Imines and
<i>N</i>
‐Heterocycles Catalyzed by Simple, Bipyridine‐Based Mn
<sup>I</sup>
Complexes
作者:Abhishek Dubey、S. M. Wahidur Rahaman、Robert R. Fayzullin、Julia R. Khusnutdinova
DOI:10.1002/cctc.201900358
日期:2019.8.21
Utilization of hydroxy‐substituted bipyridine ligands in transition metal catalysis mimicking [Fe]‐hydrogenase has been shown to be a promising approach in developing new catalysts for hydrogenation. For example, MnI complexes with 6,6′‐dihydroxy‐2,2′‐bipyridine ligand have been previously shown to be active catalysts for CO2 hydrogenation. In this work, simple bipyridine‐based Mn catalysts were developed
Lamellar Ni/Al-SBA-15 fibers: preparation, characterization, and applications as highly efficient catalysts for amine and imine syntheses
作者:Ren Ren、Jiantai Ma
DOI:10.1039/c5ra14382a
日期:——
A novel lamellar Ni/Al-SBA-15 fiber catalyst was prepared and successfully utilized in one-pot syntheses of amines and imines.
一种新型的层状Ni/Al-SBA-15纤维催化剂已经制备成功,并成功地用于胺和亚胺的一锅法合成。
Selective Aerobic Oxidation of Alcohols to Aldehydes, Carboxylic Acids, and Imines Catalyzed by a Ag-NHC Complex
作者:Lei Han、Ping Xing、Biao Jiang
DOI:10.1021/ol501353q
日期:2014.7.3
Silver NHC catalysts have been developed for the selective oxidation of alcohols to aldehydes or carboxylic acids in the presence of BnMe3NOH or KOH under dry air. The aerobic oxidation conditions are mild, and the yield is excellent. Further tandem catalysis enables the one-pot synthesis of imines in excellent yield. Only 0.1 mol % of the catalyst is required.
Direct imine formation by oxidative coupling of alcohols and amines using supported manganese oxides under an air atmosphere
作者:Bo Chen、Jun Li、Wen Dai、Lianyue Wang、Shuang Gao
DOI:10.1039/c4gc00336e
日期:——
Manganese oxides loaded on various supports have been prepared and studied for the direct imine formation by oxidative coupling of alcohols and amines. Among the catalysts, hydroxyapatite supported manganese oxides (MnOx/HAP) show the best activity and selectivity for this reaction in the absence of an additional base using air as the environmentally benign terminal oxidant. NH3-/CO2-TPD results show
已经制备了负载在各种载体上的锰氧化物,并研究了通过醇和胺的氧化偶联直接形成亚胺的方法。在这些催化剂中,羟基磷灰石负载的锰氧化物(MnO x / HAP)在没有使用空气作为环境友好的终端氧化剂的附加碱的情况下,对于该反应表现出最佳的活性和选择性。NH 3- / CO 2 -TPD结果表明,MnO x的两性性质/ HAP对于该反应获得令人满意的收率至关重要。各种芳族醇和胺均以良好或优异的收率平稳地转化为相应的亚胺。该催化剂可重复使用,并且在所有9次重复使用测试中均可提供98%的产品收率。与新鲜催化剂相比,经过九次反应后,再活化的MnO x / HAP的XRD和SEM没有明显变化。
Dual Heterogeneous Catalyst Pd–Au@Mn(II)-MOF for One-Pot Tandem Synthesis of Imines from Alcohols and Amines
A new Mn(II) metal–organicframework (MOF) 1 was synthesized by the combination of 4,4,4-trifluoro-1-(4-(pyridin-4-yl)phenyl)butane-1,3-dione (L) and Mn(OAc)2 in solution. 1 features a threefold-interpenetrating NbO net containing honeycomb-like channels, in which the opposite Mn(II)···Mn(II) distance is 23.5075(10) Å. Furthermore, 1 can be an idealplatform to support Pd–Au bimetallic alloy nanoparticles