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

A Leitgeb, K Mereiter, C Slugovc

Index: Leitgeb, Anita; Mereiter, Kurt; Slugovc, Christian Monatshefte fur Chemie, 2012 , vol. 143, # 6 p. 901 - 908

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Citation Number: 15

Abstract

Abstract Upon comparative NMR spectroscopy studies, the isomerization of newly disclosed dichloro [κ 2 (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 ligand to form an intermediate ...