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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1280543Generated: November 3, 2026

Methyl iodide → Pyridine, 4-(3-(methylthio)-5(4H)-1,2,4-triazol-5-yl)-

https://huagongshe.com/reaction/1280543

Reaction equation

Participants

RoleNameHCIDCharge
ReactantMethyl iodideHCID 6328—
ReactantPotassium tert-butoxideHCID 23665647—
ReactantHCID 178527980HCID 178527980—
SolventWaterHCID 962—
SolventDimethylformamideHCID 6228—
ProductPyridine, 4-(3-(methylthio)-5(4H)-1,2,4-triazol-5-yl)-HCID 19914845.7%

Reaction Conditions

Temperature50 °C

Reaction Steps

A suspension of 5-(4-pyridyl)-1H-1,2,4-triazole-3-thiol (Aldrich) (4 g, 22.4 mmol) and .potassium t-butoxide (2.89 g, 25.8 mmol) in DMF (30 mL) was stirred at room temperature under argon until a homogeneous solution resulted. Methyl iodide (1.48 mL 23.8 mmol) was added and the reaction mixture was heated to 50° C. in an oil bath for 16 h. The reaction mixture was diluted with water, extracted with EtOAc, the organic extract was washed with water and dried (MgSO4). The solid obtained on concentration was filtered from hot ethyl acetate to obtain 3-methylthio-5-(4-pyridyl)-1H-1,2,4-triazole (1.97 g).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06451820B1
Source datasetuspto-grants-2002_09
ORD IDord-6956a0e8e24c40d1843d7f6cdc02ef44
Source noteuspto-grants-2002_09