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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 21366Generated: October 25, 2026

Hydrochloric Acid → N-(3-Cyano-4,5,6,7-tetrahydrobenzo(b)thien-2-yl)benzamide

https://huagongshe.com/reaction/21366

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantBenzoyl chlorideHCID 7412—
Reactant2-Amino-4,5,6,7-tetrahydrobenzo(b)thiophene-3-carbonitrileHCID 78382—
SolventPyridineHCID 1049—
ProductN-(3-Cyano-4,5,6,7-tetrahydrobenzo(b)thien-2-yl)benzamideHCID 29022197%

Reaction Steps

4.7 ml (40 mmol) of benzoyl chloride were added to a solution of 5.34 g (30 mmol) of 2-amino-3-cyano-4,5,6,7-tetrahydrobenzo[b]thiophene in 50 ml of pyridine. Stirring was carried out for 2 hours at 80° C. after which 150 ml of 10 mol % aqueous hydrochloric acid were added to the mixture. The solid formed was isolated in a conventional manner. Yield: 97%; mp.: 168°-170° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05422335
Source datasetuspto-grants-1995_06
ORD IDord-c687d545fb614a2799fe1a2c2fe90189
Source noteuspto-grants-1995_06