摘要:
A process for producing 4-(methylthio)butane-1,2-diol characterized by reacting 3-butene-1,2-diol with methanethiol in the presence of a carboxylic acid compound and at least one nitrogenous compound selected from the group consisting of nitrogenous aromatic compounds and tertiary amine compounds.
摘要:
A method for producing 4-(methylthio)butane-1,2-diol which comprises reacting 3-butene-1,2-diol with methanethiol in the presence of an azo compound such as an azonitrile compound, an azoester compound, an azoamidine compound and an azoimidazoline compound.
摘要:
Disclosed is a method for producing a halogen-substituted phthalide, which includes a reaction step of reacting a halogen-substituted phthalic anhydride with sodium borohydride.
摘要:
A method for producing tetrafluoroterephthalic acid difluoride comprising reacting tetrachloroterephthalic acid dichloride with potassium fluoride in the presence of dimethyl sulfone.
摘要:
Disclosed is a method for producing a halogen-substituted benzenedimethanol represented by the formula (2) below, which is characterized in that a halogen-substituted terephthalic acid represented by the formula (1) below is reacted with a boron hydride compound in an organic solvent, and the thus-obtained reaction mixture is brought into contact with hydrogen chloride at a temperature of 40-70°C. (1) (In the formula, X 1 , X 2 , X 3 and X 4 independently represent a hydrogen atom or a halogen atom, provided that all of X 1 , X 2 , X 3 and X 4 are not hydrogen atoms at the same time.) (2) (In the formula, X 1 , X 2 , X 3 and X 4 are as defined above.)
摘要:
A selenium compound, a nitrogenous aromatic compound, and an acid are mixed together optionally in the presence of a solvent to obtain an oxidation catalyst composition. The oxidation catalyst composition obtained shows catalytic activity in the oxidation reactions of organic compounds. For example, by reacting an olefin compound having two or more hydrogen atoms on the α-position carbon atom of the carbon-carbon double bond with an organic hydroperoxide compound in the presence of the oxidation catalyst composition, at least one oxygenic compound selected from the group consisting of alcohol compounds, aldehyde compounds, ketone compounds, and carboxylic acid compound is obtained.
摘要:
A method for producing 2-hydroxy-4-(methylthio)butyric acid which comprises the following steps (A), (B) and (C): Step (A): step of reacting 1,2-epoxy-3-butene with water to obtain 3-butene-1,2-diol, Step (B): step of reacting 3-butene-1,2-diol with methanethiol to obtain 4-(methylthio)butane-1,2-diol, Step (C): step of oxidizing 4-(methylthio)butane-1,2-diol to obtain 2-hydroxy-4-(methylthio)butyric acid.