Dimethyl(methylene)ammounium iodide → 2-(5-Dimethylaminomethyl-4-methyl-imidazol-1-yl)-5-trifluoromethoxy-benzonitrile

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Reaction Steps

As described for example 84b, 2-(4-methyl-imidazol-1-yl)-5-trifluoromethoxy benzonitrile (+regioisomer) was reacted with Eschenmoser's salt in DMF for 24 h at 90° C. Evaporation of the solvent, aqueous workup and chromatography afforded the title compound as a colorless oil that was sufficiently pure to be used in the next step (yield: 38%). 1H-NMR (300 MHz, DMSO): δ=1.93 (s, 6H), 2.17 (s, 3H), 3.21 (s, 2H), 7.80-7.95 (m, 3H), 8.22 (s, 1H).

Provenance & Evidence