Exploring efficient and air-stable d² Re(v) alkylidyne catalysts: toward room temperature alkyne metathesis.

ABSTRACT: Transition metal-catalyzed alkyne metathesis has become a useful tool in synthetic chemistry. Well-defined alkyne metathesis catalysts comprise alkylidyne complexes of tungsten, molybdenum and rhenium. Non-d⁰ Re(v) alkylidyne catalysts exhibit advantages such as remarkable tolerance to air and moisture as well as excellent functional group compatibility. However, the known Re(v) alkylidynes with a pyridine leaving ligand require harsh conditions for activation, resulting in lower catalytic efficiency compared to d⁰ Mo(vi) and W(vi) alkylidynes. Herein, we report the first non-d⁰ alkylidyne complex capable of mediating alkyne metathesis at room temperature, namely, the Re(v) aqua alkylidyne complex Re([triple bond, length as m-dash]CCH₂Ph)( ^<

SUBMITTER: Cui M 

PROVIDER: S-EPMC11499950 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature