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  • One-Pot Synthesis of Hyperv...
    Matoušek, Václav; Pietrasiak, Ewa; Schwenk, Rino; Togni, Antonio

    Journal of organic chemistry, 07/2013, Letnik: 78, Številka: 13
    Journal Article

    Simplified syntheses suited for large scale preparations of the two hypervalent iodine reagents 1 and 2 for electrophilic trifluoromethylation are reported. In both cases, the stoichiometric oxidants sodium metaperiodate and tert-butyl hypochlorite have been replaced by trichloroisocyanuric acid. Reagent 1 is accessible in a one-pot procedure from 2-iodobenzoic acid in 72% yield. Reagent 2 was prepared via fluoroiodane 11 in a considerably shorter reaction time and with no need of an accurate temperature control.