Ruthenium(II) carbonyl complexes with N-[di(alkyl/aryl)carbamothioyl] benzamide derivatives and triphenylphosphine as effective catalysts for oxidation of alcohols

Article abstract of DOI:10.1080/00958972.2010.548007

Ruthenium(II) complexes, [RuCl(L)(CO)(PPh₃)₂] {where L = N-[di(alkyl/aryl)carbamothioyl]benzamide derivatives}, are prepared from reaction between [RuHCl(CO)(PPh₃)₃] and N-[di(alkyl/aryl)carbamothioyl]benzamide derivatives in toluene and characterized by elemental analysis and spectral data (electronic, infrared, ¹H NMR, and ³¹P NMR). The combination of [RuCl(L)(CO)(PPh₃)₂] (0.01 mmol) and N-methylmorpholine-N- oxide (NMO) (3 mmol) is an active catalyst for the oxidation of primary, secondary, cyclic, allylic, aliphatic, and benzylic alcohols to their corresponding aldehydes and ketones at room temperature. The oxidation protocol is simple to operate and gives the corresponding carbonyl compounds good to excellent yields.