Catalytic Dimerization of Alkynes via C–H Bond Cleavage by a Platinum–Silylene Complex

Tomoki Yoshida , Masaya Ohta , Jean Innocent , Tsuyoshi Kato (1, 2) , Mamoru Tobisu

1 CNRS - Centre National de la Recherche Scientifique
2 LHFA - Laboratoire Hétérochimie Fondamentale et Appliquée

The cyclodimerization of diphenylacetylene derivatives catalyzed by a platinum-silylene complex is reported. The reaction proceeds via the cleavage of a carbon-hydrogen bond at the ortho-position of an alkynyl group and no additives are needed. Platinum complexes bearing other common ligands, such as phosphines and NHCs, failed to promote this reaction, highlighting the utility of the silylene ligand in this reaction.

Domaines: Catalyse; Chimie de coordination; Chimie inorganique

Tomoki Yoshida, Masaya Ohta, Jean Innocent, Tsuyoshi Kato, Mamoru Tobisu. Catalytic Dimerization of Alkynes via C–H Bond Cleavage by a Platinum–Silylene Complex. Organometallics, 2020, 39 (10), pp.1678-1682. ⟨10.1021/acs.organomet.0c00195⟩. ⟨hal-03028383⟩