N-fluoropyridinium triflate and its derivatives: Useful fluorinating agents
作者:Teruo Umemoto、Kosuke Kawada、Kyoichi Tomita
DOI:10.1016/s0040-4039(00)84980-1
日期:1986.1
N-Fluoropyridinium triflate and its derivatives, stable and nonhygroscopic crystals, were found to be widely applicable reagents for mild and selective fluorination of a variety of organic compounds.
Oxidation of the more substituted regioisomer of the enolsilylether of a methyl sec-alkyl ketone with 2 equiv of m-chloroperbenzoic acid in the presence of KHCO3 gives, after acidic workup, an α,α′-dihydroxylated ketone in high yield. Applications to the synthesis of adrenal hormones and an anthracycline model compound are also described.