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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 132544Generated: October 25, 2026

Hydrochloric Acid → HCID 72756950, compound

https://huagongshe.com/reaction/132544

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantHydroxylamine, O-ethyl-HCID 69357—
ReactantSodium BicarbonateHCID 516892—
Reactant4-acetyl-N-(pyridin-4-ylmethyl)benzenesulfonamideHCID 6493468—
SolventMethanolHCID 887—
SolventWaterHCID 962—
ProductHCID 72756950HCID 72756950—

Reaction Conditions

Temperature22.5 °C

Reaction Steps

0.42 g of a 40% strength aqueous O-ethylhydroxylamine solution was added to a solution of 0.4 g (1.3 mmol) of the compound from Example 1 in 20 ml of methanol. Using 10% strength hydrochloric acid, the mixture was acidified to pH 4, and the solution was then stirred at 20-25° C. for about 18 hours. The reaction solution was poured into water and adjusted to pH 8 using NaHCO3. The mixture was then extracted with methyl tert-butyl ether (MtBE), and the combined organic phases were washed with water and dried. Removal of the solvent gave 0.4 g of the title compound as a viscous oil.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07388018B2
Source datasetuspto-grants-2008_06
ORD IDord-21f70d2ac52d45769953da9741049837
Source noteuspto-grants-2008_06