Transfer hydrogenation of acetophenone promoted by (arene)ruthenium(II) reduuced schiff base complexes;an X-ray [(#eta#-p-cymene)RuCl(OC-6H_4-CH_2NHC_6H_6H_4-p-Me)]

摘要

Arene ruthenium(II) reduced Schiff base complexes of formulation [(#eta#~6-p-cymene)RuCl(L~n) in the presence of sodium carbonate in CH_2Cl_2.The complexes contain an #eta#~6-p-cymene group,a choride and a bidentate chelating N,O-donor ligand.The molecular structure of [(#eta#~6-p-cymene)RuCl(OC_6h_4-2-ch_2nhc_6h_4-p-Me)](1) has been determined by X-ray crystallography.The complexes are found to be catalytically active for tansfer hydrogenation of acetophenone to (+-)1-phenylethanol in the presence of KOH and isopropanol showing percent conversion of 98 with the catalysts haivng a bulkyl substitutent adjacent to the O-and N-donor sites of the auxiliaryl ligand.