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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1749343Generated: October 27, 2026

1,3,5-trimethyl-1H-pyrazol-4-amine → 4-Bromo-2,6-Dichloro-N-(1,3,5-Trimethyl-1h-Pyrazol-4-Yl)benzenesulfonamide

https://huagongshe.com/reaction/1749343

Reaction equation

Participants

RoleNameHCIDCharge
Reactant1,3,5-trimethyl-1H-pyrazol-4-amineHCID 161603—
Reactant4-Bromo-2,6-dichlorobenzene-1-sulfonyl chlorideHCID 2737466—
SolventPyridineHCID 1049—
Product4-Bromo-2,6-Dichloro-N-(1,3,5-Trimethyl-1h-Pyrazol-4-Yl)benzenesulfonamideHCID 4618887789%

Reaction Steps

Prepared from 4-bromo-2,6-dichlorobenzenesulfonyl chloride (5.0 g, 15.4 mmol) and 4-amino-1,3,5-trimethyl-1H-pyrazole (1.93 g, 15.4 mmol) in pyridine (35 ml) according to the method of intermediate 1, to give the title compound as an orange solid (5.64 g, 13.7 mmol, 89%). δH (D-6 DMSO, 300K) 9.75 (1H, s), 8.00 (2H, s), 3.57 (3H, s), 1.93 (3H, s), 1.72 (3H, s). m/z (ES+, 70V) 413.9 (MH+).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09156811B2
Source datasetuspto-grants-2015_10
ORD IDord-f265d02a5e504edfaefcbb6ab55992bf
Source noteuspto-grants-2015_10