Back
HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 527267Generated: October 31, 2026

Water → HCID 178427419, compound

https://huagongshe.com/reaction/527267

Reaction equation

Participants

RoleNameHCIDCharge
ReactantWaterHCID 962—
Reactant4-Toluenesulfonyl chlorideHCID 7397—
ReactantHCID 178513736HCID 178513736—
SolventDimethylformamideHCID 6228—
ProductHCID 178427419HCID 17842741912%

Reaction Steps

3-((4-aminophenyl)amino)-5-((4-hydroxybenzyl)amino)-1H-pyrazole-4-carboxamide (150 mg) was dissolved in 25.00 mL of DMF along with TEA (211 μL, 2.50 eq.) and stirred on ice for 15 minutes. p-Toluenesulfonyl chloride (145 mg, 1.25 eq.) dissolved in 1 mL of DMF was slowly dripped into to the reaction vessel and continued to stir for 18 hrs allowing the reaction to reach room temperature. Once the reaction was complete, traces of starting material is no longer present and confirmed by HPLC, water was added to the reaction until a white precipitate formed. The white precipitate was then collected via filtration and dried under vacuum for 18 hrs (30 mg, 12% yield).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09346792B2
Source datasetuspto-grants-2016_05
ORD IDord-b71b287cdfdf4312b644e4c18a43149a
Source noteuspto-grants-2016_05