Stereoisomers and functional groups in oxidorhenium(<scp>v</scp>) complexes: effects on catalytic activity
作者:J. A. Schachner、B. Berner、F. Belaj、N. C. Mösch-Zanetti
DOI:10.1039/c9dt01352k
日期:——
previously described oxidorhenium(V) complex [ReOCl(oz)2] (4), employing the phenol–oxazoline ligand 2-(4,5-dihydro-2-oxazolyl)phenol Hoz, was included in these catalysis studies. Complex 4 is a rare case in oxidorhenium(V) chemistry where two stereoisomers could be separated and fully characterized. With respect to the position of the oxazoline nitrogen atoms on the rhenium atom, these two stereoisomers
描述了氧化the(V)配合物[ReOCl(L1a-c)2 ](3a-c)的合成,该复合物配备了双齿单阴离子酚-二甲基恶唑啉配体H L1a-c。与母体配体2-(4,4-二甲基-4,5-二氢-1,3-恶唑-2-基)-酚H 1a相比,配体H L1b–c在酚环上包含官能团;即甲氧基的邻位的羟基位置(2-(4,4-二甲基-4,5-二氢-1,3-唑-2-基)-6-甲氧基苯酚,H 1B),或硝基的对向羟基位置(2-(4,4-二甲基-4,5-二氢-1,3-恶唑-2-基)-4-硝基苯酚,H 1c)。此外,合成了氧化去氧鸟酸酯(V)络合物(NBu 4)[ReOCl 3(L1a–b)](2a–b),用于与3a–b进行固态结构比较。所有新颖的配合物均具有完整的特征,包括NMR,IR和UV-Vis光谱,MS光谱,X射线晶体学,元素分析以及循环伏安法。通过两个基准催化反应,即环辛烯环氧化和高氯酸盐还原,研究了官能团(R