Back
HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 22276Generated: October 25, 2026

p-Toluenesulfonic acid → HCID 178475406, compound

https://huagongshe.com/reaction/22276

Reaction equation

Participants

RoleNameHCIDCharge
Reactantp-Toluenesulfonic acidHCID 6101—
Reactant3-Amino-1-phenylpyrazoleHCID 98736—
ReactantHCID 15231609HCID 15231609—
SolventTolueneHCID 1140—
ProductHCID 178475406HCID 17847540646.7%

Reaction Steps

4,5-Dihydro-1-phenyl-1H-pyrazol-3-amine (0.16 g), 4-amino-2,6-dimethylphenyl acetate (0.2 g), and toluene-4-sulfonic acid (0.02 g) were refluxed in toluene under nitrogen for 8 hours. Evaporation and chromatography (silica, dichloromethane/ethyl acetate [95:5]) of the residue gave the title product (0.15 g), as a solid.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05428044
Source datasetuspto-grants-1995_06
ORD IDord-6a05132bb6f6479fa1f6059fc1b38eb9
Source noteuspto-grants-1995_06