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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1262278Generated: November 1, 2026

Methyl iodide → 6-Bromo-2-methylsulfanyl-3H-pyrrolo[2,1-f][1,2,4]triazin-4-one

https://huagongshe.com/reaction/1262278

Reaction equation

Participants

RoleNameHCIDCharge
ReactantMethyl iodideHCID 6328—
Reactant6-Bromo-2-sulfanylidene-2,3-dihydropyrrolo[2,1-f][1,2,4]triazin-4(1H)-oneHCID 57416129—
SolventTetrahydrofuranHCID 8028—
Product6-Bromo-2-methylsulfanyl-3H-pyrrolo[2,1-f][1,2,4]triazin-4-oneHCID 136360301—

Reaction Conditions

Temperature45 °C

Reaction Steps

Into a round bottom flask, 6-Bromo-2-thioxo-2,3-dihydro-1H-pyrrolo[2,1-f][1,2,4]triazin-4-one (11.20 g, 0.04551 mol), Tetrahydrofuran (200 mL) and Methyl iodide (6.517 mL, 0.1047 mol) were added, respectively. The reaction was stirred at 45° C. for one hour. The solid was filtered. The solvent was removed under vacuum to give a solid. The combined solid was partitioned with water (500 mL) and saturated NaHCO3 (500 mL). The mixture was stirred for 30 minutes. The solid was filtered and washed with water to give 6-Bromo-2-methylsulfanyl-3H-pyrrolo[2,1-f][1,2,4]triazin-4-one as a white solid (5.80, 49%).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08471005B2
Source datasetuspto-grants-2013_06
ORD IDord-c784874467094115b86f8cc95e451658
Source noteuspto-grants-2013_06