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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1184932Generated: November 2, 2026

Thionyl Chloride → 2-Ethoxythieno[2,3-b]pyrazine-6-carbonyl chloride

https://huagongshe.com/reaction/1184932

Reaction equation

Participants

RoleNameHCIDCharge
ReactantThionyl ChlorideHCID 24386—
Reactant2-Ethoxythieno[2,3-b]pyrazine-6-carboxylic acidHCID 67125582—
Product2-Ethoxythieno[2,3-b]pyrazine-6-carbonyl chlorideHCID 86680184100%

Reaction Steps

A solution of 2-ethoxythieno[2,3-b]pyrazine-6-carboxylic acid (30 mg, 0.134 mmol) in thionyl chloride (1 mL) was stirred at 80° C. for 2 h. Evaporated to dryness and co-evaporated with toluene to give 2-ethoxythieno[2,3-b]pyrazine-6-carbonyl chloride (32 mg, 100%).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08669256B2
Source datasetuspto-grants-2014_03
ORD IDord-a4ab962234864a819bf86d7102c66b68
Source noteuspto-grants-2014_03