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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1282811Generated: October 29, 2026

Pyridine → 3-Ethanesulphonyl-imidazolidin-2-on-1-carbonyl chloride

https://huagongshe.com/reaction/1282811

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPyridineHCID 1049—
ReactantPhosgeneHCID 6371—
Reactant1-Ethylsulphonyl-imidazolidin-2-oneHCID 11286796—
SolventDichloromethaneHCID 6344—
Product3-Ethanesulphonyl-imidazolidin-2-on-1-carbonyl chlorideHCID 11736606—

Reaction Steps

The N-ethanesulphonyl-imidazolidin-2-one was then suspended in dichloromethane, a large excess of phosgene was introduced at 0°C, a little pyridine was added and the mixture was left to stand overnight. The excess phosgene was then largely removed by passing in dry air and the product (3-ethanesulphonyl-imidazolidin-2-on-1-carbonyl chloride) was suspended in dichloromethane and filtered off.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS03972869
Source datasetuspto-grants-1976_08
ORD IDord-39ad1dd466fc4e00b029246071c8069f
Source noteuspto-grants-1976_08