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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1814704Generated: November 2, 2026

Thionyl Chloride → Benzo[b]thiophene-2-carbonyl Chloride

https://huagongshe.com/reaction/1814704

Reaction equation

Participants

RoleNameHCIDCharge
ReactantThionyl ChlorideHCID 24386—
ReactantBenzo(b)thiophene-2-carboxylic acidHCID 95864—
CatalystDimethylformamideHCID 6228—
SolventTolueneHCID 1140—
ProductBenzo[b]thiophene-2-carbonyl ChlorideHCID 142384—

Reaction Steps

The Benzo[b]thiophene-2-carbonyl chloride was prepared by adding toluene (2 mL), DMF (2 drops) and thionyl chloride (50 μL) to benzo[b]thiophene-2-carboxylic acid. Heating the mixture to reflux for 5 hours followed by removal of the solvent afforded the crude product, which was used without further purification.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06875760B2
Source datasetuspto-grants-2005_04
ORD IDord-de49ac937bd349d3bfc1f0422d2e77db
Source noteuspto-grants-2005_04