Triethylamine → (E)-3-[4,5-Bis(4-fluorophenyl)-2-trifluoromethyl-1H-imidazol-1-yl]-2-propenenitrile

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Reaction Steps

From 4,5-bis(4-fluorophenyl)-2-trifluoromethyl-1H-imidazole (3.045 g), 2,3-dibromopropionitrile (5.33 g), anhydrous potassium carbonate (3.1 g) and triethylamine (5.2 ml) in dry DMF (19 ml) by the process as described for the preparation of Intermediate (3a) to afford a dark brown residue which was purified by FCC using gradient elution with System A (5-15% with 5% incremental increase of ethyl acetate per 500 ml eluant) to afford the title compound (1.449 g) as a white solid. νmax (CHBr3) 2229 cm-1 (C≡N).

Provenance & Evidence