反应详情

In analogy to example 5a, 2-fluoro-5-trifluoromethoxy-benzonitrile was reacted with 4-methylimidazole and potassium carbonate for 16 h at 90° C. Aqueous workup afforded a 3:1 mixture of the title compound and its regioisomer [5-trifluoromethoxy-2-(5-methyl-imidazol-1-yl)-benzonitrile] as a light brown viscous oil (yield: 100%). 1H-NMR (300 MHz, DMSO): δ=2.19 (s, 3H), 7.37 (s, 1H), 7.75-7.90 (m, 2H), 8.02 (s, 1H), 8.27 (d, J=2.7 Hz, 1H).

1. customAqueous workup afforded