Method for producing epsilon-caprolactam
AssigneeToray Industries, Inc.
InventorsMasateru ITO, Daijiro TSUKAMOTO, Kenji KAWAMURA, Kohei YAMASHITA, Masato AKAHIRA, Katsushige YAMADA, Koji YAMAUCHI
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Abstract
A method for selective production of ε-caprolactam, wherein a substance inducible from a biomass resource is used as a material; the reaction process is short; ammonium sulfate is not produced as a by-product; and production of by-products is suppressed; is disclosed. The method for producing ε-caprolactam comprises the step of reacting a particular compound inducible from a biomass resource, such as α-hydromuconic acid, 3-hydroxyadipic acid, or 3-hydroxyadipic acid-3,6-lactone, or a salt thereof with hydrogen or ammonia.
Claims14
A method for producing ε-caprolactam, comprising the step of reacting a compound represented by General Formula (I) or (II):
- wherein R1, R2, and R3 each independently represent OR4 or NR5R6;
- each R4 independently represents H or C1-C5 alkyl;
- each R5 independently represents H or C1-C5 alkyl;
- and X represents —CH(OH)CH2CH2—, CH2CH(OH)CH2—, —CH═CHCH2—, or —CH2CH═CH—,
- or a salt thereof with hydrogen and ammonia.
Dependencies are inferred from the claim text.