CATALYTIC OLEFIN EPOXIDATION WITH MOLECULAR OXYGEN OVER SUPPORTED AMIDATE-BRIDGED PLATINUM BLUE COMPLEXES
作者:Wanzhi Chen、Jun Yamada、Kazuko Matsumoto
DOI:10.1081/scc-120001503
日期:2002.1.1
ABSTRACT The platinum complexes, [Pt4(NH3)8((CH3)3CCONH)4]-(NO3)5 and [Pt2(NH3)4((CH3)3CCONH)2](NO3)4, supported on a surface of silica gel, Al2O3, activated carbon, and poly-(4-vinylpyridine) are active heterogeneous catalysts for the liquid phase epoxidation of various olefins under 1 atm of dioxygen in the presence of isobutyraldehyde.
Direct Catalytic Transformation of Olefins into α-Hydroxy Ketones with Hydrogen Peroxide Catalyzed by Peroxotungstophosphate
作者:Yasuyuki Sakata、Yuji Katayama、Yasutaka Ishii
DOI:10.1246/cl.1992.671
日期:1992.4
Aliphatic olefins were directly converted into α-hydroxy ketones with acidic aqueous hydrogenperoxide in the presence of catalytic amount of peroxotungstophosphate (PCWP) under the biphasic system using chloroform as a solvent. The acidic medium was necessary to open the resulting epoxide to vic-diol which was subsequently oxidized to α-hydroxy ketones.
Exceedingly Fast Oxygen Atom Transfer to Olefins via a Catalytically Competent Nonheme Iron Species
作者:Joan Serrano-Plana、Almudena Aguinaco、Raquel Belda、Enrique García-España、Manuel G. Basallote、Anna Company、Miquel Costas
DOI:10.1002/anie.201601396
日期:2016.5.17
The reaction of [Fe(CF3SO3)2(PyNMe3)] with excess peracetic acid at −40 °C leads to the accumulation of a metastable compound that exists as a pair of electromeric species, [FeIII(OOAc)(PyNMe3)]2+ and [FeV(O)(OAc)(PyNMe3)]2+, in fast equilibrium. Stopped‐flow UV/Vis analysis confirmed that oxygen atom transfer (OAT) from these electromeric species to olefinic substrates is exceedingly fast, forming
Bioinspired oxidation: The hydroxylation of alkanes with retention of the configuration and the cis‐dihydroxylation of olefins can be accomplished using [FeII(CF3SO3)2(Me,HPyTACN)] (1) as a catalyst, water as an oxygen‐atom source, and cerium ammonium nitrate (CAN) as a single‐electron oxidant. The oxidation of CH bonds and CC bonds, as well as water oxidation involves a common reaction intermediate
仿生氧化:烷烃与配置的保留和的羟基化的顺式烯烃可以使用的[Fe来实现的二羟基化II(CF 3 SO 3)2(我,H PyTACN)](1)作为催化剂,水作为氧原子源和硝酸铈铵(CAN)作为单电子氧化剂。C的氧化 H键和CC债券,以及水的氧化涉及通过CAN的反应和的[Fe形成的公共反应中间体IV(O)(OH 2)(我,H PyTACN)] +。
Gold Nanoparticle-Catalyzed Environmentally Benign Deoxygenation of Epoxides to Alkenes
and green catalytic deoxygenation of epoxides to alkenes using goldnanoparticles (NPs) supported on hydrotalcite [HT: Mg6Al2CO3(OH)16] (Au/HT) with alcohols, CO/H2O or H2 as the reducing reagent. Various epoxides were selectively converted to the corresponding alkenes. Among the novel metal NPs on HT, Au/HT was found to exhibit outstanding catalytic activity for the deoxygenation reaction. Moreover