摘要:
The present invention discloses a process for producing an aliphatic dicarboxylic acid compound, which comprises oxidizing, with a nitrite or a nitrate in the presence of trifluoroacetic acid, an alicyclic secondary alcohol compound or an alicyclic ketone compound, in each of which at least one methylene group is bonded to the carbon atom having hydroxyl group bonded thereto or the carbon atom as a member of carbonyl group, wherein the reaction is conducted in the presence of water of 5 mass % or less relative to 100 mass % of the total of the trifluoroacetic acid and the water.
摘要:
A method of preparing a reduced product by efficiently reducing an unsaturated organic compound by using, as a reducing agent, a trichlorosilane which is industrially cheaply available and is easy to handle, and a reducing agent therefor. A reduced product of an unsaturated organic compound is obtained by mixing the unsaturated organic compound and a trichlorosilane together to reduce the unsaturated organic compound in the presence of a compound that forms a silicon complex having five coordinations upon acting on the trichlorosilane such as an N-formylated product of a secondary amine having not less than 3 carbon atoms. The invention further provides a reducing agent comprising a particular silicon complex.
摘要:
The present invention discloses a process for producing an aliphatic dicarboxylic acid compound, which comprises oxidizing, with a nitrite or a nitrate in the presence of trifluoroacetic acid, an alicyclic secondary alcohol compound or an alicyclic ketone compound, in each of which at least one methylene group is bonded to the carbon atom having hydroxyl group bonded thereto or the carbon atom as a member of carbonyl group, wherein the reaction is conducted in the presence of water of 5 mass % or less relative to 100 mass % of the total of the trifluoroacetic acid and the water.
摘要:
A method of preparing carboxylic acid derivatives comprising mixing a quaternary ammonium salt having a particular triazine ring in the molecules thereof, a carboxylic acid compound and a compound having a nucleophilic functional group, to condense the carboxylic acid with the compound having the nucleophilic functional group. The invention further provides a condensing agent comprising the quaternary ammonium salt. The condensation is conducted under mild conditions to form carboxylic acid derivatives and, particularly, amide compounds or ester compounds maintaining high yields.
摘要:
A process for producing di-tert-butyl dicarbonate by continuously carrying out the following steps of reacting tert-butyl alcohol with sodium to form sodium tert-butoxide, reacting the sodium tert-butoxide with carbon dioxide to form mono-tert-butyl sodium carbonate, and reacting the mono-tert-butyl sodium carbonate with an aromatic sulfonyl halide such as p-toluenesulfonyl chloride in the presence of a tertiary amine such as N,N,N',N'-tetramethylethylenediamine, without isolating an intermediate in the middle of each reaction stage. This process is an industrially advantageous process for producing di-tert-butyl dicarbonate from tert-butyl alcohol and an alkali metal.