Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/2927
Title: Olefin epoxidation catalyzed by ruthenium porphyrins using dioxygen as oxidant
Authors: Chan, Wing-hang
Keywords: Alkenes.
Ruthenium.
Porphyrins.
Oxidation.
Catalysis.
Hong Kong Polytechnic University -- Dissertations
Issue Date: 1999
Publisher: The Hong Kong Polytechnic University
Abstract: Ruᵛᶦ(TDCP)O₂ and Ruᵛᶦ(TMP)O₂ were synthesized by reacting Ruᶦᶦ(TDCP)(CO)(MeOH) and Ruᶦᶦ(TMP)(CO)(MeOH) with m-chloroperoxybenzoic acid in dichloromethane. Ruᵛᶦ(P)O₂ complexes are effective in epoxisation of olefins. The turnover rates by Ruᵛᶦ(TDCP)O₂ are lower than that of corresponding reactions catalyzed by RuVI(TMP)O2. Both catalysts are deactivated after the reaction by the formation of a stable Ru(II) carbonyl species. Kinetics studies showed that the intermediates are cationic 3-membered species. A concerted oxygen insertion mechanism is proposed.
Description: [11], 90 leaves : ill. ; 30 cm.
PolyU Library Call No.: [THS] LG51 .H577M ABCT 1999 Chan
URI: http://hdl.handle.net/10397/2927
Rights: All rights reserved.
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