Direct in situ synthesis of cationic N-heterocyclic carbene iridium and rhodium complexes from neat ionic liquid: Application in catalytic dehydrogenation of cyclooctadiene
作者:Ulrich Hintermair、Thibaut Gutel、Alexandra M.Z. Slawin、David J. Cole-Hamilton、Catherine C. Santini、Yves Chauvin
DOI:10.1016/j.jorganchem.2008.04.017
日期:2008.7
to cationicN-heterocycliccarbene (NHC) complexes of rhodium and iridium from neat dialkyl-imidazolium ionic liquids (ILs) has been found. The method uses complexes bearing basic anionic ligands, [M(COD)(PPh3)X], X = OEt, MeCO2, which react with the inactivated imidazolium cation in the absence of external bases yielding one M-NHC moiety and the free protonated base. This new one-pot synthesis leaving