474056-00-3Relevant academic research and scientific papers
Synthesis and protonation of [RuH(NBD)(2,6-(Ph2PCH2)2C6H3 )]
Liu, Sheng Hua,Ng, Sze Ming,Wen, Ting Bin,Zhou, Zhong Yuan,Lin, Zhenyang,Lau, Chak Po,Jia, Guochen
, p. 4281 - 4292 (2008/10/08)
Treatment of [RuCl(PPh3)(PCh3)] (PCP = 2,6-(Ph2PCH2)2C6H3) with norbornadiene (NBD) in the presence of CuCl produces [RuCl(NBD)(PCP)]. Reaction of [RuCl(NBD)(PCP)] with TlOTf gives [Ru(OTf)(NBD)(PCP)], which reacts with NaBH4 to produce [RuH(NBD)(PCP)]. Protonation of [RuH(NBD)(PCP)] with acetic acid in the presence of PPh3 gives norbornene and [Ru(OAc)(PPh3)(PCP)]. Protonation of [RuH(NBD)(PCP)] with HOTf gives norbornane and [Ru(OTf)(NBD)(PCP)]. Protonation of [RuH(NBD)(PCP)] with HOTf in the presence of MeCN gives norbornene, [Ru(MeCN)(NBD)(PCP)]OTf, and [Ru(MeCN)3(PCP)]OTf. In the protonation reactions, the NBD is likely hydrogenated through the dihydrogen intermediate [Ru(H2)(NBD)(PCP)]+. A computational study shows that hydrogen transfer from the dihydrogen to the NBD ligand of [Ru(H2)(NBD)(PCP)]+ proceeds through a stepwise mechanism.
