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Synthesis, structure, and metathesis activity of ruthenium carbene complexes containing diphosphines

2001; Elsevier BV; Volume: 625; Issue: 1 Linguagem: Inglês

10.1016/s0022-328x(00)00875-5

1872-8561

Piotr Nieczypor, Piet W. N. M. van Leeuwen, J.C. Mol, Martin Lutz, Anthony L. Spek,

Organometallic Complex Synthesis and Catalysis

A series of ruthenium benzylidene complexes containing diphosphines (xantphos, dppf, Cy2P(CH2)nPCy2 (n=5, 8)) has been prepared, either by phosphine exchange in the ruthenium carbene complex RuCl2(CHPh)(PPh3)2, or in a one-pot two-steps synthesis from RuCl2(PPh3)3, phenyldiazomethane, and diphosphine. The complexes have been characterised spectroscopically (NMR, IR, MS) and by X-ray structural analysis. Their catalytic activity in olefin metathesis is also discussed.