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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1011859Generated: November 3, 2026

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

https://huagongshe.com/reaction/1011859

Reaction equation

Participants

RoleNameHCIDCharge
ReactantSodium HydroxideHCID 14798—
ReactantL-Lysine monohydrochlorideHCID 69568—
Solvent1-PentanolHCID 6276—
Product2H-Azepin-2-one, 3-aminohexahydro-HCID 102463—

Reaction Conditions

Temperature137 °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 120 ml of 1-pentanol. This mixture is heated to 137° C. and is refluxed for four hours. The yield of α-amino-ε-caprolactam 2 produced by this reaction is about 96%.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07977450B2
Source datasetuspto-grants-2011_07
ORD IDord-1be491f75f954d4d866cc9a86913e59d
Source noteuspto-grants-2011_07