| Popis: |
Under mild conditions, the copper(I) complex [Cu I (TMPA)CH 3 CN]PF 6 (TMPA=tris(2-pyridyl-methyl)amine), reacts stoichiometrically with benzyl and allyl halides, and α-halo-ketones to produce near quantitative yields of carbon-carbon reductively coupled products bibenzyls, diolefins or diketones, respectively. The copper complex acts as the halide acceptor and the copper(II) complex [Cu II (TMPA)X]PF 6 (XCl − or Br − ) is also isolated. No firm mechanistic conclusions can be drawn, but the intermediacy of oxidatively added RX products, i.e. organo-Cu(II) or Cu(III), is suggested. |
