PRODUCTION OF ALPHA-AMINO ACID

PURPOSE:To produce an alpha-amino acid under mild conditions in high yield by hydrolyzing hydantoin in contact with water using an extremely highly active catalyst consisting of a complex metal oxide such as titanium oxide-zirconium oxide. CONSTITUTION:Hydantoin [e.g. 5-(beta-methylthioethyl)-hydant...

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Hauptverfasser:	OKAMURA HARUKI, YOSHIOKA HIROSHI, OSU MOTOMASA, MIZUNO TADASHI, TABEI NOBUAKI
Format:	Patent
Sprache:	eng
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS APPARATUS THEREFOR CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY GENERAL METHODS OF ORGANIC CHEMISTRY METALLURGY ORGANIC CHEMISTRY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	PURPOSE:To produce an alpha-amino acid under mild conditions in high yield by hydrolyzing hydantoin in contact with water using an extremely highly active catalyst consisting of a complex metal oxide such as titanium oxide-zirconium oxide. CONSTITUTION:Hydantoin [e.g. 5-(beta-methylthioethyl)-hydantoin] expressed by the formula [R1 and R2 are H, (substituted) lower alkyl, cyclohexyl or (substituted) phenyl] is hydrolyzed by bringing the hydantoin into contact with water in liquid phase using a complex metal oxide as a catalyst to provide the alpha-amino acid (e.g. methionine). As the complex metal oxide of catalyst, titanium oxide-zirconium oxide, titanium oxide-aluminum oxide, zirconium oxide-tungsten oxide, molybdenum oxide-aluminum oxide, etc., is especially used. The above-mentioned method is economical, since the above-mentioned reaction and aftertreatment can be carried out without using water-soluble acid and alkali.