Dinuclear Manganese Complexes Containing Chiral 1,4,7-Triazacyclononane-Derived Ligands and Their Catalytic Potential for the Oxidation of Olefins, Alkanes, and Alcohols
作者:Vladimir B. Romakh、Bruno Therrien、Georg Süss-Fink、Georgiy B. Shul'pin
DOI:10.1021/ic061950+
日期:2007.2.19
5(CH3)2CO show both enantiomers to contain Mn(III) and Mn(IV) centers, each of which being coordinated to three nitrogen atoms of a triazacyclononane ligand and each of which being bridged by two oxo and by two chiral hydroxypropyl pendent arms of the macrocycle. The enantiomeric complexes S,S-1 and R,R-1 were found to catalyze the oxidation of olefins, alkanes, and alcohols with hydrogen peroxide. In the
五个新的1,4,7-三氮杂环壬烷衍生化合物,3-(4,7-二甲基-1,4,7-三氮杂环壬烷-1-基)丙酸钠(Na [LMe2R'])以及对映体纯衍生物( S)-1-(2-甲基丁基)-4,7-二甲基-1,4,7-三氮杂环壬烷(S-LMe2R''),SS-反式-2,5,8-三甲基-2,5,8-三氮杂双环[7.4.01,9]十三烷(SS-LBMe3),(S)-1-(2-羟丙基)-4,7-二甲基-1,4,7-三氮杂环壬烷(S-LMe2R)和(R)合成了-1-(2-羟丙基)-4,7-二甲基-1,4,7-三氮杂环壬烷(R-LMe2R)。二氯化锰与手性大环化合物S-LMe2R和R-LMe2R在乙醇水溶液中的反应在用过氧化氢氧化后产生褐色的双核Mn(III)-Mn(IV)配合物,为对映异构体[Mn2(S-LMe2R) 2(mu-O)2] 3+(S,S-1)和[Mn 2(R-LMe 2 R)2(mu-O)2]