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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 574985Generated: October 26, 2026

Phosgene → 3-Chloro-4-isocyanatobenzenesulfonamide

https://huagongshe.com/reaction/574985

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPhosgeneHCID 6371—
ReactantDiisopropylethylamineHCID 81531—
Reactant4-Amino-3-chlorobenzenesulfonamideHCID 1502014—
SolventDichloromethaneHCID 6344—
Product3-Chloro-4-isocyanatobenzenesulfonamideHCID 86653693—

Reaction Steps

In a round bottom flask containing a solution of phosgene (1.573 mL) in dichloromethane (5 mL) was added 4-amino-3-chlorobenzenesulfonamide (0.206 g) and N-ethyl-N-isopropylpropan-2-amine (0.521 mL). The resulting clear solution was stirred at room temperature overnight. The mixture was concentrated and further dried under vacuum to provide the title compound.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09034875B2
Source datasetuspto-grants-2015_05
ORD IDord-fcd284f0b72a441d803185f2fe936b53
Source noteuspto-grants-2015_05