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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1749359Generated: October 25, 2026

1,5-dimethyl-1H-pyrazol-4-amine → 4-Bromo-2,6-dichloro-N-(1,5-dimethyl-1H-pyrazol-4-yl)-benzenesulfonamide

https://huagongshe.com/reaction/1749359

Reaction equation

Participants

RoleNameHCIDCharge
Reactant1,5-dimethyl-1H-pyrazol-4-amineHCID 573813—
Reactant4-Bromo-2,6-dichlorobenzene-1-sulfonyl chlorideHCID 2737466—
SolventPyridineHCID 1049—
Product4-Bromo-2,6-dichloro-N-(1,5-dimethyl-1H-pyrazol-4-yl)-benzenesulfonamideHCID 5856140564.3%

Reaction Steps

Prepared from 4-bromo-2,6-dichlorobenzenesulfonyl chloride (500 mg, 1.54 mmol) and 4-amino-1,5-dimethyl-1H-pyrazole (172 mg, 1.55 mmol) in pyridine (3 ml) according to the method of intermediate 1, to give the title compound as a cream solid (392 mg, 0.99 mmol, 64%). δH (D-6 DMSO, 300K) 9.91 (1H, s), 7.97 (2H, s), 3.64 (3H, s), 2.04 (3H, s). m/z (ES+, 70V) 399.9 (MH+).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09156811B2
Source datasetuspto-grants-2015_10
ORD IDord-a95dfe19bb7846d89faa480e860fd947
Source noteuspto-grants-2015_10