Abstract
The complex [RuCl(C3H5)(CO)3], (I), reacts with hydrogen to give polynuclear ‘alkyloxycarbene’ derivatives arising from intramolecular carbonylation of the alkyl groups derived from hydrogenation and isomerisation of the allyl group. Reactions of (I) with unsaturated substrates such as acrylonitrile (acn), alkynes, butadiene, and acetylenic esters have been studied by i.r. and 1H n.m.r. techniques. The solids [{RuCl(σ-C3H5)(CO)2(acn)}2], [{RuCl(OC·CR:CR′·C3H5)(CO)2}2](R = R′= H; R = H, R′= Ph; and R = R′= Ph), and [RuCl{(C4H6)3-C3H5}(CO)3] have been isolated. In the case of diethyl acetylenedicarboxylate an alkenyl complex of formula [RuCl{C(CO2Et):CH·C(OEt)O}(CO)3] has been obtained. Under mild conditions complex (I) is shown to be an effective catalyst for homogeneous hydrogenation of terminal, internal, and cyclic alkenes, and carbonyl compounds. A very fast isomerisation of the substrate occurs during the hydrogenation; the isomerisation takes place also in the absence of hydrogen.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.