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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1975351Generated: October 25, 2026

4-(Methylamino)benzoic acid → 1-(4-Methylaminobenzoyl)-4-[2-(4-methylmercaptophenyl)ethyl]piperazine

https://huagongshe.com/reaction/1975351

Reaction equation

Participants

RoleNameHCIDCharge
Reactant4-(Methylamino)benzoic acidHCID 66345—
Reactant1,1'-CarbonyldiimidazoleHCID 68263—
Reactant1-{2-[4-(Methylsulfanyl)phenyl]ethyl}piperazineHCID 53859945—
SolventDimethylformamideHCID 6228—
Product1-(4-Methylaminobenzoyl)-4-[2-(4-methylmercaptophenyl)ethyl]piperazineHCID 54117481—

Reaction Steps

The 1-(4-methylaminobenzoyl)-4-[2-(4-methylmercaptophenyl)ethyl]piperazine is prepared from 1.66 g of 4-methylaminobenzoic acid, 1.95 g of N,N-carbonyldiimidazole and 2.35 g of 1-[2-(4-methylmercaptophenyl)ethyl]piperazine in dimethylformamide at 85°. The base is purified via the hydrochloride (m.p. 185°, decomp.) and melts at 120°-121°.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05286728
Source datasetuspto-grants-1994_02
ORD IDord-225fc4c915684fd68275fc99b7a4c063
Source noteuspto-grants-1994_02