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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1393832Generated: October 31, 2026

Water → HCID 69203940, compound

https://huagongshe.com/reaction/1393832

Reaction equation

Participants

RoleNameHCIDCharge
ReactantWaterHCID 962—
ReactantAmmonium ChlorideHCID 25517—
ReactantHCID 69205254HCID 69205254—
CatalystZincHCID 23994—
SolventEthanolHCID 702—
ProductHCID 69203940HCID 69203940104.5%

Reaction Steps

A mixture of zinc powder (3.8 g), ammonium chloride (0.22 g), water (0.75 mL), and 96% ethanol (10 mL) was refluxed in a boiling water bath. The derivative 2-[(4-nitrophenyl)amino]-N-(tetrahydrofuran-2-ylmethyl)ethanesulfonamide (10) (2.52 g, 7.6 mmol) was added in portions and heating was continued until the reaction medium decolorized. The resulting mixture was filtered while boiling and the filtrate was recovered onto 12 mL of ethanol and 1.5 mL of concentrated hydrochloric acid. Acetone was added to precipitate the hydrochloride formed (1.8 g). The product was filtered off and recrystallized from 15 mL of ethanol to give 0.8 g of dihydrochlorided product with the following elemental analyses:

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07347879B2
Source datasetuspto-grants-2008_03
ORD IDord-38eb258731ee4b41aca21ddbf71953b8
Source noteuspto-grants-2008_03