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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 444154Generated: October 25, 2026

6-Benzothiazolecarboxylic acid, 2-amino- → 4-Amino-3-mercaptobenzoic acid

https://huagongshe.com/reaction/444154

Reaction equation

Participants

RoleNameHCIDCharge
Reactant6-Benzothiazolecarboxylic acid, 2-amino-HCID 66740—
SolventWaterHCID 962—
SolventPotassium HydroxideHCID 14797—
Product4-Amino-3-mercaptobenzoic acidHCID 598058—

Reaction Steps

Reflux 59 gm of 2-aminobenzothiazole-6-carboxylic acid (prepared by the procedure of Ann., 558, pg. 29, 1947) in a mixture of 300 gm of potassium hydroxide and 300 gm of water for 31/2 hours. Cool and use in the next step as the dipotassium salt.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04263207
Source datasetuspto-grants-1981_04
ORD IDord-9d56b1292f1b47de9054de9b34351b5c
Source noteuspto-grants-1981_04