Ketone transfer hydrogenation reactions catalyzed by a phosphinite ruthenium PCP complex
摘要:
The reaction of the potentially tridentate phosphinite PCP pincer type ligand [C6H4-1,3-(OPPh2)(2)] with [eta(6)-p-cymene)RuCl2](2) affords the bimetallic species [C6H4-1,3-(OPPh2{Ru(eta(6)-p-cymene)Cl-2})(2)]. Several attempts, including the change of the ruthenium starting material (e.g. [(eta(6) -benzene)RuCl2](2)) and reflux conditions to achieve the coordination of the diphosphinite [C6H4-1,3-(OPPh2)(2)] in a tridentate PCP pincer fashion failed. Complex [C6H4-1,3-(OPPh2{Ru(eta(6)-p-cymene)Cl-2})(2)] was tested in the transfer hydrogenation of ketones. (c) 2005 Elsevier B.V. All rights reserved.