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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 428249Generated: October 28, 2026

Ammonium Hydroxide → 2-Oxoindoline-5-sulfonamide

https://huagongshe.com/reaction/428249

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 numberUS06313158B1
Source datasetuspto-grants-2001_11
ORD IDord-12b0c8ccbacc4732a8c379df29e882a2
Source noteuspto-grants-2001_11