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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1464428Generated: October 25, 2026

Thionyl Chloride → 5,6-Dihydro-4H-cyclopenta[b]thiophene-2-carbonyl chloride

https://huagongshe.com/reaction/1464428

Reaction equation

Participants

RoleNameHCIDCharge
ReactantThionyl ChlorideHCID 24386—
Reactant4H,5H,6H-cyclopenta(b)thiophene-2-carboxylic acidHCID 770980—
Product5,6-Dihydro-4H-cyclopenta[b]thiophene-2-carbonyl chlorideHCID 19088019—

Reaction Steps

1.0 g of 5,6-dihydro-4H-cyclopenta[b]thiophene-2-carboxylic acid was reacted with 4 ml of thionyl chloride for 3.5 hours under reflux. Then, excess thionyl chloride was distilled off under reduced pressure to obtain 5,6-dihydro-4H-cyclopenta[b]thiophene-2-carbonyl chloride.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05304657
Source datasetuspto-grants-1994_04
ORD IDord-c9cecca69b4e49e7a0992b094561e098
Source noteuspto-grants-1994_04