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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 384618Generated: October 31, 2026

Sodium Hydroxide → 2H-Azepin-2-one, 3-aminohexahydro-

https://huagongshe.com/reaction/384618

Reaction equation

Participants

RoleNameHCIDCharge
ReactantSodium HydroxideHCID 14798—
ReactantL-Lysine monohydrochlorideHCID 69568—
Solvent1-ButanolHCID 263—
Product2H-Azepin-2-one, 3-aminohexahydro-HCID 102463—

Reaction Conditions

Temperature117 °C

Reaction Steps

30 mmols of L-lysine hydrochloride 1 is neutralized with 30 mmols of NaOH and then 270 mmols of Al2O3 is added, followed by the addition of 120 ml of 1-butanol. This mixture is heated to 117° C. and is refluxed for six hours. The yield of α-amino-ε-caprolactam 2 produced by this reaction is about 92%.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08367819B2
Source datasetuspto-grants-2013_02
ORD IDord-4cf6c64c395f4dcc905fa6b46be5fe62
Source noteuspto-grants-2013_02