[EN] A PROCESS FOR 2-OXO-4-METHYLTHIOBUTANOIC ACID OR SALTS THEREOF<br/>[FR] PROCÉDÉ DE PRODUCTION D'ACIDE 2-OXO-4-MÉTHYLTHIOBUTANOÏQUE OU DE SELS DE CELUI-CI
申请人:SUMITOMO CHEMICAL CO
公开号:WO2012091158A1
公开(公告)日:2012-07-05
The present invention provides a novel process for producing 2-oxo-4-methylthiobutanoic acid or salts thereof. A process for producing 2-oxo-4-methylthiobutanoic acid or salts thereof comprises a step of reacting methanethiol metal salts and 2-oxo-3-butenoic acid. Specific example of the methanethiol metal salts includes methanethiol alkali metal salts such as litium methane thiolate, sodium methane thiolate, potassium methane thiolate and the others and methanethiol alkaline-earth metal salts such as calcium methane thiolate, barium methane thiolate and the others.
VO(acac)(2) catalyzes the oxidation of aldehydes (aromatic, aliphatic, and heterocyclic) to the corresponding acids efficiently and selectively in the presence of H2O2 as an oxidant. This method possesses functional-group compatibility, easy workup procedure, and shorter reaction time. The reaction is highly dependent on the solvent used. Performance of titania-supported VO(acac)(2) in the oxidation of aldehyde was also investigated.
[EN] A PROCESS FOR 2-OXO-4-METHYLTHIOBUTANOIC ACID OR SALTS THEREOF<br/>[FR] PROCÉDÉ DE PRODUCTION D'ACIDE 2-OXO-4-MÉTHYLTHIOBUTANOÏQUE OU DE SELS
申请人:SUMITOMO CHEMICAL CO
公开号:WO2012091159A1
公开(公告)日:2012-07-05
The present invention provides a novel process for producing 2-oxo-4-methylthiobutanoic acid or salts thereof. A process for producing 2-oxo-4-methyl butanoic acid or salts thereof comprises a step (1) of reacting methanethiol and organic base, and a step (2) of reacting the product obtained in the above step (1) and 2-oxo-3-butenoic acid. Example of the organic base includes a tertiary amine such as triethylamine, trimethylamine, diisopropylethylamine, tri-n-butylamine, N-methylmorpholine and the others, and a nitrogen-containing heterocyclic aromatic compound such as pyridine, quinoline, N-methylimidazole and the others.