Iodoethane → 1-Ethyl-5-methyl-1H-imidazole-4-carbaldehyde

Beteiligte Stoffe

Reaktionsschritte

5-Methyl-1H-imidazole-4-carbaldehyde (940 mg, 8.5 mmol) was dissolved in THF (40 ml) with DMF (5 ml). NaH (380 mg of a 60% dispersion in mineral oil) was added carefully and the reaction mixture was allowed to stir for 5 min. under nitrogen. Ethyl iodide (1.65 g, 9.7 mmol) was added and it was allowed to stir for 1 h, at which time the reaction was judged complete. The solvent was removed under vacuum, and the crude was purified on silica eluted with 100% ethyl acetate—1% MeOH/ethyl acetate to yield the title product (390 mg) as the main isomer. MS (ESI-POS): [M+H]+=139.

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