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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1159773Generated: November 2, 2026

Sodium Hydroxide → HCID 68712618, compound

https://huagongshe.com/reaction/1159773

Reaction equation

Participants

RoleNameHCIDCharge
ReactantSodium HydroxideHCID 14798—
Reactant4-BromoindoleHCID 676494—
ReactantPyridine-3-sulfonyl chloride hydrochlorideHCID 12571517—
CatalystTetrabutylammonium hydrogen sulfateHCID 94433—
ProductHCID 68712618HCID 6871261895%

Reaction Steps

Aq. 2M NaOH (1 mL) was added to a stirred mixture of pyridine-3-sulfonyl chloride hydrochloride (240 mg, 1.12 mmol; Intermediate 23), 4-bromoindole (200 mg, 1.02 mmol) and tetrabutylammonium hydrogen sulfate (35 mg, 0.10 mmol). The reaction was stirred 45 min. and the layers were allowed to separate. The organic layer was washed twice with diluted aq. NaOH, dried and concentrated to get the title compound (325 mg, 95%) as an off white solid. MS (ESI+) for C13H9BrN2O2S m/z 337 (M+H)+.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07812017B2
Source datasetuspto-grants-2010_10
ORD IDord-9f993f898dd0403996746e906b6f3782
Source noteuspto-grants-2010_10