The reaction of phenyloxiranes with a clay produces aldehydes, ketones and cyclic ethers. This method has the advantage that experimental conditions are simple and the reagents used are cheaper.
applied for the oxidativecleavage of isoeugenol to vanillin with molecular oxygen as the sole oxidant, and the reaction proceeded effectively under mild reaction conditions. The highest vanillin selectivity of 72% was obtained with CoTPyP/TN, which had the widest clearance space among the three Co–porphyrin catalysts. These intercalated catalysts showed high stability during oxidation, enabling their
A process for producing an epoxide compound, characterized by reacting an olefin compound with hydrogen peroxide in the presence of: a metal oxide catalyst obtained by reacting hydrogen peroxide with at least one member selected from the group consisting of tungsten metal, molybdenum metal, compounds of tungsten and a Group IIIb, IVb, Vb, or VIb element, tungstic acid and salts thereof, compounds of molybdenum and a Group IIIb, IVb, Vb, or VIb element, and molybdic acid and salts thereof; at least one member selected from the group consisting of tertiary amine compounds, tertiary amine oxide compounds, nitrogenous aromatic compounds, and nitrogenous aromatic N-oxide compounds; and a phosphoric acid compound.
A metal catalyst obtained by contacting
(A) at least one metal or metal compound selected from
i) tungsten compounds composed of tungsten and an element of group IIIb, IVb, Vb, or VIb,
ii) molybdenum compounds composed of molybdenum and an element of group IIIb, IVb, Vb, or VIb, and
iii) tungsten metal and molybdenum metal;
(B) at least one compound selected from tertiary amine compounds, tertiary amine oxide compounds, nitrogen-containing aromatic compounds and nitrogen-containing aromatic N-oxide compounds;
(C) hydrogen peroxide; and
(D) a phosphate compound, is provided.