منابع مشابه
Oxidations of amines with molecular oxygen using bifunctional gold–titania catalysts
Over the past decades it has become clear that supported gold nanoparticles are surprisingly active and selective catalysts for several green oxidation reactions of oxygen-containing hydrocarbons using molecular oxygen as the stoichiometric oxidant. We here report that bifunctional gold–titania catalysts can be employed to facilitate the oxidation of amines into amides with high selectivity. Fu...
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Acetobacter suboxydans is known to bring about oxidation of polyhydroxy compounds. The action of the bacterial enzyme is limited, however, to substances with specific configurations. According to the generalization of Bertrand,’ only those hydroxyl groups are oxidized which are situated between a primary hydroxyl group and a secondary one in a cis position. Hann, Tilden, and Hudson,2 in a compa...
متن کاملConsecutive oxygen-based oxidations convert amines to α-cyanoepoxides.
Tri- or tetrasubstituted α-cyanoepoxides can be rapidly prepared from unactivated amines and malononitrile or methyl cyanoacetate when singlet oxygen, produced in a continuous-flow photoreactor, serves as an oxidant and in situ peroxide source. The hydrogen peroxide generated in amine oxidation epoxidizes an electron deficient olefin intermediate, formed by deaminative Mannich coupling. The cor...
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Vanadium haloperoxidases catalyse the oxidation of halides leading to halogenation of substrates or, in the absence of suitable substrates, to oxidation of hydrogen peroxide into singlet oxygen and water. Furthermore, V-haloperoxidases are capable to give enantioselective sulfoxidation under the appropriate conditions. The most interesting model compounds that have been synthesised and studied ...
متن کاملEffects of thyroxine and some related compounds on bacterial oxidations.
It was recently observed in our laboratory that the oxidation of cholesterol in vitro by intestinal bacteria is stimulated by 2,4-dinitrophenol (1). In preliminary experiments with the same bacterial system, L-thyroxine was also found to accelerate the oxidation of cholesterol and of glucose (2). The work to be described here includes an extension of these studies and, in addition, results obta...
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ژورنال
عنوان ژورنال: Biochemical Journal
سال: 1928
ISSN: 0306-3283
DOI: 10.1042/bj0221368