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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 28185Generated: October 29, 2026

Hydroxylamine → HCID 23339651, compound

https://huagongshe.com/reaction/28185

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydroxylamineHCID 787—
ReactantHydroxyamine hydrochlorideHCID 443297—
ReactantSodiumHCID 5360545—
ReactantEthyl alpha-naphthylcarbamoylacetateHCID 12547460—
SolventMethanolHCID 887—
ProductHCID 23339651HCID 2333965162%

Reaction Steps

19.3 g (0.075 mol) of ethyl α-naphthylcarbamoylacetate are treated with a solution of hydroxylamine, prepared from 5.6 g (0.08 mol) of hydroxylamine hydrochloride and 3.68 g of sodium in 250 ml of methanol. After leaving the reactants in contact for 5 hours, the mixture is evaporated to dryness in vacuo, the residue is taken up in 400 ml of cold water, the solution is filtered over charcoal, and the product is precipitated cold with 3N HCl, filtered off and washed with water. CRL 40,518 is obtained by recrystallisation from ethanol. Yield: 62%. Melting point: 184°-186° C. (with decomposition).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04225617
Source datasetuspto-grants-1980_09
ORD IDord-28ca8c3cfe154c77a663076b3c7e3729
Source noteuspto-grants-1980_09