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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1741617Generated: November 1, 2026

Water → HCID 178439583, compound

https://huagongshe.com/reaction/1741617

Reaction equation

Participants

RoleNameHCIDCharge
ReactantWaterHCID 962—
ReactantPyridineHCID 1049—
ReactantAcetic AnhydrideHCID 7918—
ReactantHCID 53751268HCID 53751268—
SolventTolueneHCID 1140—
ProductHCID 178439583HCID 178439583—

Reaction Conditions

Temperature10 °C

Reaction Steps

A mixture of 3 g of 2-(4-isopropyl-4-methyl-5-oxo-2-imidazolin-2-yl)nicotinic acid -1-oxide, 2.24 g of acetic anhydride, and 0.4 g of pyridine in 80 mL of toluene is stirred and heated at reflux for 3 hours. The reaction mixture is cooled to 10° C. and 75 mL of cold water is added with vigorous stirring. The resulting yellow solid is filtered, washed with toluene, and air dried. Recrystallization of this solid from methanol affords the desired product as a white solid, mp 201°-203° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05334576
Source datasetuspto-grants-1994_08
ORD IDord-89cdbf3a7a3e492c92caea7c2597a117
Source noteuspto-grants-1994_08