On the isomerization of a trans-dichloro to a cis-dichloro amide-chelated ruthenium benzylidene complex and the catalytic scope of these species in olefin metathesis
作者:Anita Leitgeb、Kurt Mereiter、Christian Slugovc
DOI:10.1007/s00706-012-0740-6
日期:2012.6
AbstractUpon comparative NMR spectroscopy studies, the isomerization of newly disclosed dichloro [κ2(C,O)-2-(N-propylaminocarbonyl)benzylidene][1,3-bis(2,4,6-trimethylphenyl)-4,5-dihydroimidazol-2-ylidene]ruthenium from trans-dichloro configuration (SPY-5-31) to its thermodynamically more favored cis-dichloro derivative (with SPY-5-34 stereochemistry) was found to proceed via dissociation of one chloride
摘要当比较NMR光谱研究,新公开二氯异构[κ 2(C,O)-2-(Ñ -propylaminocarbonyl)亚苄基] [1,3-双(2,4,6-三甲基苯基)-4,5-发现反式-二氯构型(SPY -5-31)到其热力学上更受好评的顺式-二氯衍生物(具有SPY -5-34立体化学)的二氢咪唑-2-钌]通过一个氯配体的离解形成一个中间阳离子物种。此外,研究了反式和顺式-二氯衍生物在开环复分解反应中作为催化剂和在开环复分解聚合反应中作为引发剂的性能。 图形概要