The invention relates to a process for the oxidation of carbon-containing organic compounds where the said compounds have at least one bond with a bond order >1, wherein an oxidizing of these carbon-containing organic compounds to be oxidized is performed with electrochemically generated C—O—O oxidizing agents, in particular peroxodicarbonate. Also described is the use of C—O—O oxidizing agents generated electrochemically from carbonate, in particular peroxodicarbonate, as oxidizing agents for the oxidation of carbon-containing organic compounds, in particular carbon-containing organic compounds where the said compounds have at least one bond with a bond order >1. Finally, an arrangement for the oxidation of carbon-containing organic compounds is provided, comprising a first unit for the electrochemical preparation of C—O—O oxidizing agents generated electrochemically from carbonate, in particular peroxodicarbonate, and a second unit for the oxidizing of the carbon-containing organic compound with the C—O—O oxidizing agent generated electrochemically from carbonate, in particular peroxodicarbonate. In this case, these two units are connected to one another in such a way that an ex situ generated oxidizing agent can be fed to the second unit.

The invention relates to a process for the oxidation of carbon-containing organic compounds where the said compounds have at least one bond with a bond order >1, wherein an oxidizing of these carbon-containing organic compounds to be oxidized is performed with electrochemically generated C—O—O oxidizing agents, in particular peroxodicarbonate. Also described is the use of C—O—O oxidizing agents generated electrochemically from carbonate, in particular peroxodicarbonate, as oxidizing agents for the oxidation of carbon-containing organic compounds, in particular carbon-containing organic compounds where the said compounds have at least one bond with a bond order >1. Finally, an arrangement for the oxidation of carbon-containing organic compounds is provided, comprising a first unit for the electrochemical preparation of C—O—O oxidizing agents generated electrochemically from carbonate, in particular peroxodicarbonate, and a second unit for the oxidizing of the carbon-containing organic compound with the C—O—O oxidizing agent generated electrochemically from carbonate, in particular peroxodicarbonate. In this case, these two units are connected to one another in such a way that an ex situ generated oxidizing agent can be fed to the second unit.

A new heterogeneous catalyst for various organic oxidation processes and a method of making the same by a successful immobilization of a copper (II) bis-Schiff base hydrazone complex on the surface of a composite ZnO—TiO.sub.2 to afford as active catalyst CuL.sub.2Cl.sub.2@ZnO—TiO.sub.2. This novel catalyst can be used to selectively oxidize benzyl alcohol to benzaldehyde.

The present invention discloses a novel method of preparing 8-methyldecanal, a flavor and fragrance material. Specifically, starting from cheap and readily available material 6-chloro-1-hexanol, first, the hydroxyl group was protected with dihydropyran catalyzed by para-toluene sulfonic acid to produce 6-chloro-hexyl tetrahydropyran ether. Then 6-chloro-hexyl tetrahydropyran ether reacted with magnesium turnings to form a Grignard reagent and reacted with 1-bromo-2-methyl-butane under the catalysis of cuprous bromide to give the intermediate 8-methyl-sunny tetrahydropyran ether. Without purification, crude 8-methyl-sunny tetrahydropyran ether was treated under acidic conditions to remove the protecting group to generate 8-methyl-1-decyl alcohol. Finally, 8-methyl decanal was obtained after oxidation with 2, 2, 6, 6-tetramethylpiperidinyloxy. The novel method of preparing 8-methyldecanal disclosed in the present invention utilizes common raw materials with low costs, the reaction conditions are mild, and yield is high. It is suitable for large-scale production.

The present invention discloses a novel method of preparing 8-methyldecanal, a flavor and fragrance material. Specifically, starting from cheap and readily available material 6-chloro-1-hexanol, first, the hydroxyl group was protected with dihydropyran catalyzed by para-toluene sulfonic acid to produce 6-chloro-hexyl tetrahydropyran ether. Then 6-chloro-hexyl tetrahydropyran ether reacted with magnesium turnings to form a Grignard reagent and reacted with 1-bromo-2-methyl-butane under the catalysis of cuprous bromide to give the intermediate 8-methyl-sunny tetrahydropyran ether. Without purification, crude 8-methyl-sunny tetrahydropyran ether was treated under acidic conditions to remove the protecting group to generate 8-methyl-1-decyl alcohol. Finally, 8-methyl decanal was obtained after oxidation with 2, 2, 6, 6-tetramethylpiperidinyloxy. The novel method of preparing 8-methyldecanal disclosed in the present invention utilizes common raw materials with low costs, the reaction conditions are mild, and yield is high. It is suitable for large-scale production.

The method of the present invention for producing 1,3-butadiene includes: vaporizing an ethanol feedstock in a vaporizer (104), supplying the feedstock to two or more parallel first reactors (108) to convert ethanol into acetaldehyde in the presence of a first catalyst; supplying a resulting intermediate gas to a second reactor (110) to convert ethanol and acetaldehyde into 1,3-butadiene in the presence of a second catalyst; purifying a resulting crude gas containing 1,3-butadiene by a gas-liquid separator (112), a first distillation column (114), a fourth reactor (116), and a second distillation column (118); and supplying an oxygen-containing gas to at least one of the two or more parallel first reactors (108) under specific conditions, while discharging a carbon dioxide-containing gas from the first reactor (108), to thereby regenerate the first catalyst, while continuing the conversion reaction.

The method of the present invention for producing 1,3-butadiene includes: vaporizing an ethanol feedstock in a vaporizer (104), supplying the feedstock to two or more parallel first reactors (108) to convert ethanol into acetaldehyde in the presence of a first catalyst; supplying a resulting intermediate gas to a second reactor (110) to convert ethanol and acetaldehyde into 1,3-butadiene in the presence of a second catalyst; purifying a resulting crude gas containing 1,3-butadiene by a gas-liquid separator (112), a first distillation column (114), a fourth reactor (116), and a second distillation column (118); and supplying an oxygen-containing gas to at least one of the two or more parallel first reactors (108) under specific conditions, while discharging a carbon dioxide-containing gas from the first reactor (108), to thereby regenerate the first catalyst, while continuing the conversion reaction.

The method of the present invention for producing 1,3-butadiene includes: vaporizing an ethanol feedstock in a vaporizer (104), supplying the feedstock to two or more parallel first reactors (108) to convert ethanol into acetaldehyde in the presence of a first catalyst; supplying a resulting intermediate gas to a second reactor (110) to convert ethanol and acetaldehyde into 1,3-butadiene in the presence of a second catalyst; purifying a resulting crude gas containing 1,3-butadiene by a gas-liquid separator (112), a first distillation column (114), a fourth reactor (116), and a second distillation column (118); and supplying an oxygen-containing gas to at least one of the two or more parallel first reactors (108) under specific conditions, while discharging a carbon dioxide-containing gas from the first reactor (108), to thereby regenerate the first catalyst, while continuing the conversion reaction.

The method of the present invention for producing 1,3-butadiene includes: vaporizing an ethanol feedstock in a vaporizer (104), supplying the feedstock to two or more parallel first reactors (108) to convert ethanol into acetaldehyde in the presence of a first catalyst; supplying a resulting intermediate gas to a second reactor (110) to convert ethanol and acetaldehyde into 1,3-butadiene in the presence of a second catalyst; purifying a resulting crude gas containing 1,3-butadiene by a gas-liquid separator (112), a first distillation column (114), a fourth reactor (116), and a second distillation column (118); and supplying an oxygen-containing gas to at least one of the two or more parallel first reactors (108) under specific conditions, while discharging a carbon dioxide-containing gas from the first reactor (108), to thereby regenerate the first catalyst, while continuing the conversion reaction.

A tetracarbonyl cyclobutene dihydrate compound, having a chemical formula (I). ##STR00001## A method of synthesizing the tetracarbonyl cyclobutene dihydrate compound, includes: a synthesis step, a separation step, and a purification step. The synthesis step includes: collecting and dissolving 0.5728 g of squaric acid, 2.7948 g of ammonium formate, and 0.0480 g of the palladium complex in 100 mL of anhydrous methanol, heating and stirring a resulting mixture to reflux for 48 hrs, and stopping the reaction. The separation step includes: performing column chromatography analysis on reaction products according to a volume ratio of dichloromethane to anhydrous methanol of 8:2, to obtain a target product. A method of using the tetracarbonyl cyclobutene dihydrate compound, includes: using tetracarbonyl cyclobutene dihydrate compound as a catalyst in addition reaction between ethyl pyruvate and nitromethane, where a conversion rate of ethyl pyruvate reaches 96.1%.