Kinetic control of stereoselectivity of halide substitution in arene ruthenium pyridyloxazoline complexes; a rare case of net inversion†
作者:Adam J. Davenport、David L. Davies、John Fawcett、Shaun A. Garratt、David R. Russell
DOI:10.1039/a907873h
日期:——
Reaction of [RuCl(Pri-pymox)(η6-mes)]+ 1b [Pri-pymox = 4-isopropyl-2-(2-pyridyl)-1,3-oxazoline, mes = 1,3,5-trimethylbenzene] with AgSbF6 then with halide gives [RuX(Pri-pymox)(η6-mes)]+ (X = Cl 1, Br 2, I 3), each as a mixture of diastereomers, the kinetic product being formed preferentially with net inversion of configuration at the metal; the structures of 2a and 2b have been determined by X-ray crystallography.
RuCl(Pri-pymox)(Î-6-mes)]+ 1b [Pri-pymox = 4-isopropyl-2-(2-pyridyl)-1,3-oxazoline, mes = 1,3,5-trimethylbenzene] 与 AgSbF6 反应,然后与卤化物反应,得到 [RuX(Pri-pymox)(Î-6-mes)]+ (X = Cl 1、Br 2, I 3),每一种都是非对映异构体的混合物,动力学产物优先在金属上形成净反转构型;2a 和 2b 的结构已通过 X 射线晶体学确定。