Back
HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 20255Generated: October 27, 2026

Isopropanol → HCID 178475127, compound

https://huagongshe.com/reaction/20255

Reaction equation

Participants

RoleNameHCIDCharge
ReactantIsopropanolHCID 3776—
Reactant2-BromoethanolHCID 10898—
Reactant4-Amino-1,2,4-triazoleHCID 11432—
SolventAcetonitrileHCID 6342—
ProductHCID 178475127HCID 178475127—

Reaction Conditions

Temperature80 °C

Reaction Steps

5.000 grams, 59.4 mmoles of 4-amino-1,2,4-triazole was dissolved in 200 ml of fresh acetonitrile and stirred vigorously. 29.800 grams of 2-bromoethanol was added slowly to the solution by pipet. After the addition was complete, the reaction mixture was heated for 20 hours at 80° C., until thin layer chromatography revealed that all of the 4-amino-1,2,4-triazole had been consumed. The reaction mixture was then allowed to cool to room temperature and then was rotary evaporated down to leave a viscous oil. Hot isopropyl alcohol was added to the oil dissolving it. Storage of the resultant solution in a refrigerator resulting in a large crop of a viscous oil of 1-ethanol-4-amino-1,2,4-triazolium bromide, 9.9332 g, 47.5 mmoles. Melting point 0-5° C.; DSC onset 180° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07745635B1
Source datasetuspto-grants-2010_06
ORD IDord-636d9b24fc2f447daf8cdd76a40f5893
Source noteuspto-grants-2010_06