Readily synthesis of a series of RuCl2(xantphos) L (L = PPh3, P(OPh)(3), DMSO) was achieved. Thus, RuCl2(xantphos) PPh3 was synthesised by the reaction of RuCl2(PPh3)(3) with xantphos. PPh3 in this complex is easily exchanged with P(OPh)(3) and Dimethylsulfoxide (DMSO) to give RuCl2(xantphos) P(OPh)(3)} and RuCl2(xantphos)(DMSO), respectively. (C) 2015 Elsevier B.V. All rights reserved.
Addition reaction of 2-phenylbenzoic acid onto unactivated olefins catalyzed by Ru(II)–xantphos catalysis
作者:Yohei Oe、Tetsuo Ohta、Yoshihiko Ito
DOI:10.1016/j.tetlet.2010.03.052
日期:2010.5
Ru(II)–xantphos catalysis is found to be effective for the addition reaction of 2-phenylbenzoic acid onto unactivatedolefins. Thus, the reactions of 2-phenylbenzoic acid and unactivatedolefins are carried out in the presence of 5 mol % of Ru(II)–xantphos catalysis in refluxing CHCl3 for 48 h to afford the corresponding esters in 40–95% yield. The control experiments indicate that the influence of