Olefin epoxidation catalyzed by ruthenium porphyrins using dioxygen as oxidant

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Olefin epoxidation catalyzed by ruthenium porphyrins using dioxygen as oxidant

 

Author: Chan, Wing-hang
Title: Olefin epoxidation catalyzed by ruthenium porphyrins using dioxygen as oxidant
Year: 1999
Subject: Alkenes
Ruthenium
Porphyrins
Oxidation
Catalysis
Hong Kong Polytechnic University -- Dissertations
Department: Dept. of Applied Biology and Chemical Technology
Pages: [11], 90 leaves : ill. ; 30 cm
Language: English
InnoPac Record: http://library.polyu.edu.hk/record=b1484665
URI: http://theses.lib.polyu.edu.hk/handle/200/2080
Abstract: RuVI(TDCP)O2 and RuVI(TMP)O2 were synthesized by reacting RuII(TDCP)(CO)(MeOH) and RuII(TMP)(CO)(MeOH) with m-chloroperoxybenzoic acid in dichloromethane. RuVI(P)O2 complexes are effective in epoxisation of olefins. The turnover rates by RuVI(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.

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