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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2121398Generated: November 3, 2026

Ammonium Hydroxide → 2-Oxoindoline-5-sulfonamide

https://huagongshe.com/reaction/2121398

Reaction equation

Participants

RoleNameHCIDCharge
ReactantAmmonium HydroxideHCID 14923—
Reactant2-oxo-2,3-dihydro-1H-indole-5-sulfonyl chlorideHCID 4962506—
SolventEthanolHCID 702—
Product2-Oxoindoline-5-sulfonamideHCID 1019823220%

Reaction Steps

5-Chlorosulfonyl-2-oxindole (2.1 g) was added to 10 mL of ammonium hydroxide in 10 mL of ethanol and stirred at room temperature overnight. The mixture was concentrated and the solid collected by vacuum filtration to give 0.4 g (20% yield) of the title compound as an off-white solid.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06696448B2
Source datasetuspto-grants-2004_02
ORD IDord-2de96017b91c4f8ca604638132ff2dde
Source noteuspto-grants-2004_02