Visible-Light-Mediated Umpolung Reactivity of Imines: Ketimine Reductions with Cy<sub>2</sub>NMe and Water
作者:Rui Wang、Mengyue Ma、Xu Gong、Grace B. Panetti、Xinyuan Fan、Patrick J. Walsh
DOI:10.1021/acs.orglett.8b00778
日期:2018.4.20
carbanionic reactivity of imines mediated by photoredox catalysis is demonstrated. The umpolung imine reactivity is exemplified by proton abstraction from water as a key step in the reduction of benzophenone ketimines to amines (up to 98% yield). Deuterium is introduced into amines efficiently using D2O as an inexpensive deuterium source (≥95% D ratio). The mechanism of this unusual transformation
Synthesis and characterization of aminopyridine iron(<scp>ii</scp>) chloride catalysts for isoprene polymerization: sterically controlled monomer enchainment
作者:Chuyang Jing、Liang Wang、Qaiser Mahmood、Mengmeng Zhao、Guangqian Zhu、Xianhui Zhang、Xiaowu Wang、Qinggang Wang
DOI:10.1039/c9dt00452a
日期:——
analysis: Fe3Me and Fe11Me adopted distorted tetrahedral geometries in the solid state while Fe4H and Fe7H were found in dimeric or polymeric forms respectively in which chlorides acted as bridging ligands. The catalytic capacities of these iron complexes were investigated for isoprene polymerization. Upon activation with a MAO cocatalyst, the catalytic activities of complexes varied as a function of the steric
在这项研究中,一系列的2-R-6-(1-(烷基氨基)甲基)吡啶-铁络合物[烷基:(CPh 3)Fe1 H ; (CHPh 2)Fe2 H ; (CHPh 2)Fe3 Me ; (CHMePh)FE4 ħ ; (CH 2 Ph)Fe5 H ; (CHMe 2)Fe6 H ; (C 6 H 11)Fe7 H ; (CH 2(4-OMe)Ph)Fe8 H ; (CH 2(4-CF 3)Ph)Fe9 H ; (CH2(2,4,6-Me 3)Ph) Fe10 H ; 合成了(CH 2 Ph) Fe11 Me ],并通过ATR-IR光谱,HRMS光谱和元素分析对其进行了很好的表征。此外,的Fe3我, FE4 ħ, Fe7 ħ和FE11我用X射线衍射分析:的Fe3我和FE11我通过了在固态扭曲四面体几何形状而FE4 ħ和Fe7 ħ分别以二聚或聚合形式发现氯,其中氯化物充当桥连配体。研究了这些铁络合物对异