260249-64-7Relevant academic research and scientific papers
P-C Bond Splitting Reactions in Ruthenium(II) Complexes of Binap and MeO-Biphep Using CF3SO3H and HBF4. A Novel Ru-F-H Interaction
den Reijer, Carolien J.,W?rle, Michael,Pregosin, Paul S.
, p. 309 - 316 (2000)
Reaction of Ru(OAc)2(1 or 2), 1 = racemic Binap, or 2 = racemic MeO-Biphep, with wet CF3SO3H in 1,2-dichloroethane at 363 K results in P-C bond breaking to afford the cationic triflates [Ru(CF3SO 3)(6′-diphenylphosphino-1-naphthyl)(PPh2OH)](CF 3SO3), 7a, and [Ru(CF3SO 3)(6′-diphenylphosphino-1′-(2-dimethoxy)biphenyI) (PPh2OH)](CF3SO3),7b. Formally, the H+ protonates the acetate and water adds across the P-C bond with the resulting arene ring complexed η6 to the Ru(II). The solid-state structures of 7a and 7b are reported. A related reaction of Ru(OAc)2(1 or 2) with HBF4 gives P-C bond cleavage with the formation of compounds that contain the new phosphinite anion, 6 (C12H11BF2O2P), derived from hydrolysis of the BF4 anion. NMR studies at 213 K on the reaction mixture derived from Ru(OAc)2(1) and HBF4 show an HF addition product containing a Ru-F- - -H moiety with 1J(19F,1H) = 66 Hz. Warming of this mixture to 273 K gives P-C bond breaking and isolable complexes, 9, containing the fluorophosphine, Ph2PF. Complex 10, a Ru-Cl analogue of 9 with complexed Ph2PF, has also been isolated.
