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5‐Chloro‐7‐iodo‐8‐quinolinolatomanganese(III) with the Feature of pH‐Regulated Molecular Switches as a Highly Efficient Catalyst for Epoxidation of Olefins with Hydrogen Peroxide
Author(s) -
Zhong Sheng,
Fu Zaihui,
Tan Yueming,
Xie Qingji,
Xie Fang,
Zhou Xiaoping,
Ye Zhengpei,
Peng Guosheng,
Yin Dulin
Publication year - 2008
Publication title -
advanced synthesis and catalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.541
H-Index - 155
eISSN - 1615-4169
pISSN - 1615-4150
DOI - 10.1002/adsc.200800054
Subject(s) - chemistry , hydrogen peroxide , catalysis , acetic acid , aqueous medium , aqueous solution , cyclic voltammetry , acetone , ammonium acetate , hydrogen bond , manganese , peroxide , inorganic chemistry , ammonium , polymer chemistry , organic chemistry , electrochemistry , molecule , high performance liquid chromatography , electrode
A simple 5‐chloro‐7‐iodo‐8‐quinolinolato‐manganese(III) complex with the feature of pH‐regulated molecular switches was conveniently synthesized and found to be a novel and highly efficient catalyst for the epoxidation of olefins with aqueous hydrogen peroxide in water‐acetone media containing ammonium acetate and acetic acid as additives. This should be due to its special hexadentate binding structure that could be easily converted to the corresponding pentadentate form with a pendant hydroxy group via the opening of an axial MnO bond in the reaction media, as supported by in situ cyclic voltammetry and UV‐vis spectra characterization.