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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1272078Generated: November 2, 2026

Water → (E)-2-pyridin-3-yl-ethenesulfonic acid 2,4-dichloro-benzoylamide

https://huagongshe.com/reaction/1272078

Reaction equation

Participants

RoleNameHCIDCharge
ReactantWaterHCID 962—
ReactantSodium hydrideHCID 24758—
Reactant2,4-Dichlorobenzoyl chlorideHCID 66645—
Reactant(E)-2-pyridin-3-yl-ethenesulfonic acid amideHCID 14912437—
Solvent1,4-DioxaneHCID 31275—
Product(E)-2-pyridin-3-yl-ethenesulfonic acid 2,4-dichloro-benzoylamideHCID 1603610627.2%

Reaction Steps

Sodium hydride (60% dispersion in mineral oil) (36 mg, 0.9 mmol) was added to a solution of (E)-2-Pyridin-3-yl-ethenesulfonic acid amide (56 mg, 0.3 mmol) in dioxane (1 mL) and the mixture was shaken for 30 minutes. A solution of 2,4-dichlorobenzoyl chloride (63 μL, 0.45 mmol) in dioxane (0.5 mL) was added to the mixture and the whole was shaken at room temperature for 18 hours. Water (0.1 mL) was added to the mixture and the whole was concentrated in vacuo. The resultant residue was purified by preparative HPLC to give (E)-2-pyridin-3-yl-ethenesulfonic acid 2,4-dichloro-benzoylamide (29.1 mg, 26%) as sodium salt.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07208506B2
Source datasetuspto-grants-2007_04
ORD IDord-141d8adc68d04442b43d3acfffaaa126
Source noteuspto-grants-2007_04