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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 988845Generated: October 26, 2026

Sulfuric Acid → (+/-)-(2-chlorophenyl)-(6,7-dihydro-4H-thieno[3,2-c]pyrid-5-yl)acetamide Hydrogen Sulfate Salt

https://huagongshe.com/reaction/988845

Reaction equation

Participants

RoleNameHCIDCharge
ReactantSulfuric AcidHCID 1118—
ReactantDiethyl EtherHCID 3283—
Reactant2-Chlorophenyl-(6,7-dihydro-4H-thieno[3,2-c]pyridin-5-yl)acetamideHCID 11312824—
Reactantrac-2-(2-Chlorophenyl)-(6,7-dihydro-4H-thieno[3,2-c]pyridin-5-yl)acetonitrileHCID 11369741—
SolventAcetoneHCID 180—
Product(+/-)-(2-chlorophenyl)-(6,7-dihydro-4H-thieno[3,2-c]pyrid-5-yl)acetamide Hydrogen Sulfate SaltHCID 8658648976%

Reaction Steps

2 g (6.48 mole) of (±)-(2-chlorophenyl)-(6,7-dihydro-4H-thieno[3,2-c]pyrid-5-yl)acetamide of formula (IV), was dissolved in 10 mL acetone. To the reaction mixture 1 mL of sulfuric acid was added and was stirred for 0.5 hr. Later 5 mL of diethyl ether was added and stirred overnight at room temperature to obtain a salt. The salt 2 g (76%) was isolated by filtration and washed with acetone.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06635763B2
Source datasetuspto-grants-2003_10
ORD IDord-53520a5eed82450c94808a347a3400f6
Source noteuspto-grants-2003_10