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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1680163Generated: November 1, 2026

p-Toluenesulfonic acid → Eltenac

https://huagongshe.com/reaction/1680163

Reaction equation

Participants

RoleNameHCIDCharge
Reactantp-Toluenesulfonic acidHCID 6101—
ReactantHCID 70573760HCID 70573760—
SolventTolueneHCID 1140—
ProductEltenacHCID 51717—

Reaction Steps

357 mg (1 mmole) of 4-(2,6-dichloroanilino)-3-thiophenacetic acid tert.-butyl ester are heated to the boil with 10 mg of p-toluenesulfonic acid in toluene for 2 hours. The reaction solution is washed with water, dried and concentrated to give 4-(2,6-dichloroanilino)-3-thiophenacetic acid (m. 179° to 180°).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04272507
Source datasetuspto-grants-1981_06
ORD IDord-4c2d593767e94b969a86ec101f64e595
Source noteuspto-grants-1981_06