Protonation and NMR studies on 13C-acetate enriched Ru(OAc)2(Binap). Acetate as a source of water in PC bond splitting
作者:T.J. Geldbach、C.J. den Reijer、M. Wörle、P.S. Pregosin
DOI:10.1016/s0020-1693(01)00713-7
日期:2002.3
The P-C bond splitting reaction of Ru(OAc)(2)(Binap), containing C-13=O-enriched acetate, with 2 equiv. of triflic acid at 80 degreesC, has been studied. NMR spectroscopy (and specifically 13 C NMR data) reveal that acetic anhydride and water are produced. thus explaining the end product., which may be thought of as developing due to water adding across the P-C bond. An intermediate 10 derived from attack of acetate on a P-atorn is recognised. Complex 10 is shown to contain a cyclic five-membered ring, Ru-(P-OC(Me)(=O)} fragment which develops via acetate attack on a P-atom. Crystal structures for two Ru(OAc)(2)(MeO-Biphep) derivatives are reported. (C) 2002 Elsevier Science B.V. All rights reserved.