Highly efficient epoxidation of cyclic alkenes catalyzed by ruthenium complex

Abstract

The epoxidation of cyclic alkenes with molecular oxygen was efficiently completed in excellent epoxide yield using a novel ruthenium complex as catalyst under mild reaction conditions.

Biomimetic Epoxidation of Olefins Catalyzed by Metalloporphyrins with Molecular Oxygen

“…The result is consistent with those of Qi, Nam, and Ravikumar using ruthenium complex, cyclam or manganese acetate dihydrate as catalysts. [73][74][75][76] Iron, ruthenium and cobalt also showed excellent activity for cyclohexene epoxidation by molecular oxygen (Table 3). [77] Comparing the catalytic activities of different porphyrin catalysts, it was found that manganese porphyrin was the most effective since cyclohexene could be completely converted within 4.0 hours.…”

Biomimetic Homogeneous Oxidation Catalyzed by Metalloporphyrins with Green Oxidants

“…These include iodosylbenzenes, peroxyacids, hypochlorite, hydroperoxides, N-oxides, hydrogen peroxide, monoperoxyphthalate and potassium monopersulfate et al [22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37] However, the selective oxidation by green oxidants such as molecular oxygen or hydrogen peroxide is more attractive because of its cost-effectiveness and environmentally-friendly nature of the oxidant. [38][39][40][41][42] The chapter will try to cover the biomimetic homogeneous oxidation of organic compounds catalyzed by metalloporphyrins with green oxidants based on our group's research works, in which the oxidized substrates include alkanes, olefins, alcohols, aldehydes, sulfides etc. Both practical and mechanistic point of view for the homogeneous oxidations of different substrates catalyzed by metalloporphyrins will be presented.…”

Ruthenium carbonyl complexes in catalytic epoxidation of olefins co‐catalyzed by isobutyl‐aldehyde

“…E-mail: paguirre@ciq.uchile.cl; smoya@lauca.usach.cl alkenes. 20 Additionally ruthenium complexes containing the tetradentate square-planar ligand, 6,6 -bis(benzoylamino)-2,2 -bipyridine(H 2 BABP) have been employed as catalysts for oxygen-transfer reactions. 21 This paper presents a study of ruthenium complexes with polypyridyl ligands as catalysts for cyclohexene epoxidation.…”