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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2164415Generated: November 2, 2026

p-Toluenesulfonic acid → HCID 178502525, compound

https://huagongshe.com/reaction/2164415

Reaction equation

Participants

RoleNameHCIDCharge
Reactantp-Toluenesulfonic acidHCID 6101—
ReactantMethyl [[(methoxycarbonyl)amino](methylthio)methylene]carbamateHCID 98708—
Reactant2-(3-Acetylureido)-5-(3-trifluoromethylphenylsulfonyloxy)anilineHCID 15585469—
ProductHCID 178502525HCID 178502525—

Reaction Steps

14.6 g of 2-(3-acetylureido)-5-(3-trifluoromethylphenylsulfonyloxy)aniline, 12.4 g of N,N'-bismethoxycarbonyl-S-methylisothiourea and 75 mg of p-toluenesulfonic acid are stirred under reflux for two hours. After cooling down, the mixture is evaporated under reduced pressure, the residue is recrystallized from isopropanol and the crystals are stirred with cold ethyl acetate, filtered off with suction and washed, melting point 189° C., decomposition.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04504490
Source datasetuspto-grants-1985_03
ORD IDord-696cca6d470e43d4b52233793f0e00df
Source noteuspto-grants-1985_03