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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1038956Generated: November 2, 2026

Sulfadiazine → N-Pyrimidin-2-yl-4-thioformylamino-benzenesulfonamide chloride

https://huagongshe.com/reaction/1038956

Reaction equation

Participants

RoleNameHCIDCharge
ReactantSulfadiazineHCID 5215—
ReactantTriethylamineHCID 8471—
ReactantThiophosgeneHCID 10040—
SolventDichloromethaneHCID 6344—
ProductN-Pyrimidin-2-yl-4-thioformylamino-benzenesulfonamide chlorideHCID 86601004—

Reaction Steps

To a stirred solution of sulfadiazine (192 mg, 0.77 mmol) in dichloromethane (20 mL) were slowly added thiophosgene (0.06 mL, 0.83 mmol) and triethylamine (0.05 mL, 0.32 mmol) under cooling with an ice bath. After the reaction mixture was stirred for 5 hours at room temperature, it was washed with water and brine, dried over anhydrous sodium sulfate, filtered, evaporated and dried under vacuum; and the product was used immediately for the next reaction.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08552018B2
Source datasetuspto-grants-2013_10
ORD IDord-2aa5f230d96a416482807045f16d3647
Source noteuspto-grants-2013_10