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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 645433Generated: October 31, 2026

Chlorosulfonic acid → HCID 135856749, compound

https://huagongshe.com/reaction/645433

Reaction equation

Participants

RoleNameHCIDCharge
ReactantChlorosulfonic acidHCID 24638—
Reactant2-(2-Ethoxyphenyl)-5-ethyl-7-propylimidazo[5,1-f][1,2,4]triazin-4(1H)-oneHCID 135856757—
ProductHCID 135856749HCID 135856749—

Reaction Steps

At 0° C., 1.70 g (5.21 mmol) of 2-(2-ethoxy-phenyl)-5-ethyl-7-propyl-3H-imidazo[5,1-f][1,2,4]triazin-4-one are added slowly to 3.12 ml of chlorosulphonic acid. The reaction mixture is stirred at room temperature overnight and then poured into ice-water and extracted with dichloromethane. This gives 2.10 g (94%) of a colourless foam.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07704999B2
Source datasetuspto-grants-2010_04
ORD IDord-8cf3afc7ae54475e9241f7310041c039
Source noteuspto-grants-2010_04