C-H bond activation and subsequent C-C bond formation promoted by osmium: 2-vinylpyridine-acetylene couplings

Abstract

2 pages, 2 scheme.Complex OsH2Cl2(PiPr3)2 promotes the C−H activation of 2-vinylpyridine and subsequently couples the activated substrate with a second 2-vinylpyridine and two acetylene molecules. In the absence of 2-vinylpyridine, the activated substrate is coupled with an acetylene unit to afford a 2-butadienylpyridine derivative.Financial support from the MEC of Spain (Project CTQ2005-00656) is acknowledged. F.J.F.-A. thanks CSIC and the European Social Fund for funding through the I3P Program.Peer reviewe