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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2052827Generated: October 31, 2026

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

https://huagongshe.com/reaction/2052827

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 five hours at room temperature, it was washed with water and brine, dried over anhydrous sodium sulfate, filtered, evaporated and dried under vacuum. The product was used immediately for the next reaction.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07326712B2
Source datasetuspto-grants-2008_02
ORD IDord-882bfa9c2f5c46f1bee8573c13d2d38e
Source noteuspto-grants-2008_02