Preliminary communicationReactions of novel cationic diphenylallenylidene complexes [Ru(CC CPh2)L2(η-C9H7)]+(L = PPh3; L2= bis(diphenylphosphino)methane, dppm or 1,2-bis(diphenylphosphino)ethane, dppe) with neutral and anionic nucleophiles

Add time:09/24/2019    Source:sciencedirect.com

The synthesis of novel allenylideneruthenium(II) complexes [Ru(CCCPh2)L2(η-C9H7)] [PF6] [L = PPh3; L2 = bis(diphenyl phosphino)methane (dppm) or 1,2-bis(diphenylphosphino)ethane (dppe)] is described. The allenylidene complexes are unreactive towards methanol but other nucleophiles [PMe3, NaOMe, LiCCR (R = Ph, n-C3H7)] can be added regioselectively to the Cγ atom to give alkynyl derivatives. [Ru{CCCPh2(PMe3)}(dppm)(η-C9H 7)] [PF6] isomerizes in tetrahydrofuran solution to the thermodynamically stable product [Ru{C(PMe3)CCPh2}(dppm)(η-C9H 7)] [PF6].

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