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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1413108Generated: October 27, 2026

Methyl iodide → 2-(methylthio)-1H-naphtho[2,3-d]imidazole

https://huagongshe.com/reaction/1413108

Reaction equation

Participants

RoleNameHCIDCharge
ReactantMethyl iodideHCID 6328—
ReactantSodium HydroxideHCID 14798—
Reactant1H-benzo[f]benzimidazole-2-thiolHCID 178527755—
SolventEthanolHCID 702—
SolventWaterHCID 962—
Product2-(methylthio)-1H-naphtho[2,3-d]imidazoleHCID 12872079122.3%

Reaction Steps

20.0 g of 1H-naphth[2,3-d]imidazole-2-thiol and 4.0 g of sodium hydroxide were heated for 1 hour under reflux and in 150 ml of ethanol with 6.5 g of methyl iodide. The reaction solution was diluted with 500 ml of water and the precipitated product was suction filtered. Crystallisation from dioxane provided 12.0 g of 2-methylthio-1H-naphth[2,3-d]imidazole having a m.p. of 242°-244°.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04248880
Source datasetuspto-grants-1981_02
ORD IDord-ed7c4aa2069d4b7abeca585c00ebd11f
Source noteuspto-grants-1981_02