Synthesis, characterization and antimicrobial properties of mononuclear copper(II) compounds of N,N′-di(quinolin-8-yl)cyclohexane-1,2-diamine
作者:Sarvesh S. Harmalkar、Raymond J. Butcher、Vivekanand V. Gobre、Sanket K. Gaonkar、Luann R. D'Souza、Muniyandi Sankaralingam、Irene Furtado、Sunder N. Dhuri
DOI:10.1016/j.ica.2019.119020
日期:2019.12
Abstract Three new compounds of copper(II) viz. [Cu(BQCNH2)(CH3CN)](ClO4)2·CH3CN 1, [Cu(BQCNH2)(bpy)](ClO4)22 and [Cu(BQCNH2)(phen)](ClO4)2·2H2O 3 (BQCNH2 = N,N′-di(quinolin-8-yl)cyclohexane-1,2-diamine, bpy = 2,2′-bipyridine and phen = 1,10-phenanthroline) were synthesized and characterized by IR, UV–Vis, ESI-MS, EPR spectroscopy, cyclic voltammetry, magnetic and thermogravimetric analyses and X-ray
Highly Enantioselective Iron-Catalyzed <i>cis</i>
-Dihydroxylation of Alkenes with Hydrogen Peroxide Oxidant via an Fe<sup>III</sup>
-OOH Reactive Intermediate
作者:Chao Zang、Yungen Liu、Zhen-Jiang Xu、Chun-Wai Tse、Xiangguo Guan、Jinhu Wei、Jie-Sheng Huang、Chi-Ming Che
DOI:10.1002/anie.201603410
日期:2016.8.22
catalysts for highly enantioselective asymmetric cis‐dihydroxylation (AD) of alkenes with broad substrate scope remains a challenge. By employing [FeII(L)(OTf)2] (L=N,N′‐dimethyl‐N,N′‐bis(2‐methyl‐8‐quinolyl)‐cyclohexane‐1,2‐diamine) as a catalyst, cis‐diols in up to 99.8 % ee with 85 % isolated yield have been achieved in AD of alkenes with H2O2 as an oxidant and alkenes in a limiting amount. This “[FeII(L)(OTf)2]+H2O2”
开发具有良好底物范围的烯烃的高对映选择性不对称顺二羟基化(AD)的环境友好型催化剂仍然是一个挑战。通过使用[Fe II(L)(OTf)2 ](L = N,N'-二甲基-N,N'-双(2-甲基-8-喹啉基)-环己烷-1,2-二胺)作为催化剂,在以H 2 O 2为氧化剂的烯烃和数量有限的烯烃的AD中,已实现了高达99.8%ee的顺式二醇和85%的分离产率。该“ [Fe II(L)(OTf)2 ] + H 2 O 2”方法适用于(E)-烯烃和末端烯烃(24个实例,ee大于80%,最大1 g)。机理研究包括18种O-标记,UV / Vis,EPR,ESI-MS分析和DFT计算,为手性Fe III- OOH活性物种参与两个C-O键的对映选择性形成提供了证据。
Enantioselective Iron/Bisquinolyldiamine Ligand-Catalyzed Oxidative Coupling Reaction of 2-Naphthols
作者:Lin-Yang Wu、Muhammad Usman、Wen-Bo Liu
DOI:10.3390/molecules25040852
日期:——
An iron-catalyzed asymmetric oxidative homo-coupling of 2-naphthols for the synthesis of 1,1′-Bi-2-naphthol (BINOL) derivatives is reported. The couplingreaction provides enantioenriched BINOLs in good yields (up to 99%) and moderate enantioselectivities (up to 81:19 er) using an iron-complex generated in situ from Fe(ClO4)2 and a bisquinolyldiamine ligand [(1R,2R)-N1,N2-di(quinolin-8-yl)cyclohexane-1