A novel method for producing methionine without using hydrogen cyanide as a raw material has been demanded. A method for producing methionine including a step A of oxidizing 4-methylthio-2-oxo-1-butanal in the presence of an alcohol; a step B of hydrolyzing a 4-methylthio-2-oxo-butanoic acid ester obtained in the step A; and a step C of subjecting 4-methylthio-2-oxo-butanoic acid obtained in the step B to reductive amination.
PROCESS FOR PRODUCING ALPHA-HYDROXYKETONE COMPOUND
申请人:Hagiya Koji
公开号:US20110178309A1
公开(公告)日:2011-07-21
A process for producing an α-hydroxyketone compound, which comprises subjecting an aldehyde compound to a coupling reaction in the presence of an alkoxyimidazolidine compound represented by the formula (1) wherein R
1? and R
2? independently represent a hydrogen atom, etc., R
3? and R
4? independently represent a substituted or unsubstituted aryl group, etc. and R
5? represents an alkyl group.
Process for producing alpha-hydroxyketone compound
申请人:Sumitomo Chemical Company, Limited
公开号:US08350051B2
公开(公告)日:2013-01-08
A process for producing an α-hydroxyketone compound, which comprises subjecting an aldehyde compound to a coupling reaction in the presence of an alkoxyimidazolidine compound represented by the formula (1) wherein R1? and R2? independently represent a hydrogen atom, etc., R3? and R4? independently represent a substituted or unsubstituted aryl group, etc. and R5? represents an alkyl group.