Trifluoromethylsulfonic imidazolide

Phenols can be converted with trifluoromethylsulfonic imidazolide in the presence of sodium hydride into the corresponding trifluoromethylsulfonates, which react with potassium amide/ammonia to give aromatic amines. 15]... 

Imidazoles have been N-acylated by isocyanates (at elevated tempera-tures) " (Scheme 21), acid halides, and alkyl chlorocarbonates, but 2-methylimidazole would not react with formamide and phosphoryl chloride. Trifluoromethylsulfonation forms the imidazolide which is a convenient reagent for the introduction of the triflate group. ° With highly basic I-substituted imidazoles, acetyl halides form the 1-acetyl-... 

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