Robust Alkyne Metathesis Catalyzed by Air Stable d<sup>2</sup> Re(V) Alkylidyne Complexes
Mingxu Cui, Wei Bai, Herman H. Y. Sung, Ian D. Williams, Guochen Jia
Abstract
We report in this communication the first example of catalytic alkyne metathesis reactions mediated by well-defined non-d0 alkylidyne complexes. The air-stable d2 Re(V) alkylidyne complex Re4, bearing two PO-chelating ligands and a labile pyridine ligand, could catalyze homometathesis of internal alkynes with a broad substrate scope, including alcohols, amines, and even carboxylic acids. The catalyst can tolerate heating, air, and moisture in both solid and solution states, and the catalytic metathesis reactions could proceed normally in wet solvents.
Topics & Concepts
ChemistryMetathesisCatalysisAlkyneLigand (biochemistry)Salt metathesis reactionPyridineChelationSubstrate (aquarium)Medicinal chemistryCombinatorial chemistryOrganic chemistryPolymerizationReceptorBiochemistryPolymerOceanographyGeologySynthetic Organic Chemistry MethodsOrganometallic Complex Synthesis and CatalysisCatalytic Alkyne Reactions