Sodium hydride → methyl 2-methoxy-5-(1H-triazol-1-ylmethyl)benzoate

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Reaction Steps

Combine triazole (0.72 g, 10.4 mmol) and methylformamide (6 mL). Cool in an ice bath and add sodium hydride (0.42 g, 60% i oil, 10.4 mmol). After 30 minutes, warm to ambient temperature. Add a solution of methyl 2-methoxy-5-chloromethylbenzoate (1.85 g, 6.74 mmol) in dimethylformamide (6 mL). Heat to 75° C. After 3 hours, partition the reaction mixture between water and ethyl acetate. Extract the organic layer with water, dry over Na2SO4, filter, and concentrate in vacuo to give a residue. Chromatograph the residue on silica gel eluting with 95/5 dichloromethane/methanol containing 0.5% concentrated aqueous ammonia to give methyl 2-methoxy-5-(1H-triazol-1-ylmethyl)benzoate: Rf=0.1 (silica gel, 1/1 hexane/ethyl acetate).

Provenance & Evidence