摘要:
Provided is a method for producing fluorenone comprising an oxidation step of oxidizing fluorene in the presence of an aliphatic carboxylic acid having 2 to 3 carbon atoms, a metal catalyst, a bromine compound, and oxygen, and a phosphoric acid treatment step of bringing an oxidation reaction mixture into contact with phosphoric acid in the order indicated.
摘要:
The present invention belongs to the technical field of organic intermediate synthesis, and provides a method for light-promoted oxidation of a compound containing a saturated carbon-hydrogen bond, comprising: mixing a compound containing a saturated carbon-hydrogen bond with a catalyst, and oxidizing the compound containing a saturated carbon-hydrogen bond in an oxygen or air atmosphere at a temperature of 20°C to 100°C under light irradiation to generate an oxidation product. The present method is a method for the light-promoted direct oxidation of a compound containing a saturated carbon-hydrogen bond, which only requires a relatively low temperature to be carried out, has good compatibility with functional groups, short reaction time, high reaction efficiency, low reaction costs, high added value, simple operation and good safety, and is a mild, green and environmentally friendly oxidation method.
摘要:
The invention concerns an electrochemical method for selectively transforming alkylaromatic compounds into corresponding aromatic aldehydes, which consists in oxidising in liquid phase at a temperature ranging between 60 and 100 °C said alkylaromatic compounds, on metal anode and in the presence of an oxygen-donor oxidation co-reactant.
摘要:
The present invention provide a catalyst capable of producing an aromatic aldehyde by gas-phase oxidation of the corresponding alkylbenzene in the presence of a molecular oxygen in high yield, and a method of producing an aromatic aldehyde from the corresponding alkylbenzene in high yield by using the above catalyst. An alkylbenzene oxidation catalyst for the production of an aromatic aldehyde by gas-phase oxidation of the corresponding alkylbenzene in the presence of a molecular oxygen, which comprises tungsten and antimony plus an oxide of at least one metal species selected from the group consisting of niobium, tantalum, zirconium, and titanium or a composite oxide of two or more metal species selected from said group.
摘要:
A method for the production of fluorenone for the vapor-phase catalytic oxidation of fluorene with a molecular oxygen-containing gas, which comprises keeping the sulfur content in a raw material fluorene at or below, 0.15% by weight.
摘要:
An aromatic carboxylic acid, aromatic aldehyde, and aromatic alcohol are simultaneously and efficiently prepared by liquid phase oxidizing an aromatic compound represented by formula (I) with a gas containing molecular oxygen, in a presence of a catalyst comprising a transition metal compound, a tertiary amine and a bromide compound: wherein each R, independently, is C 1-18 alkyl, C 6-18 aryl, C 6-18 aralkyl, halogen, haloalkyl, OR 1 , SR 1 , SOR 1 , SO 2 R 2 , NO 2 , NR 1 R 2 , CH 2 OR 1 , CH(OR 1 )(OR 2 ), C(OR 1 (OR 2 )(OR 3 ), COR 1 or COCOR 1 (wherein each of R 1 , R 2 and R 3 , independently, is selected from C 1-18 alkyl, C 6-18 aryl and hydrogen).