title: Azidation of β-keto esters and silyl enol ethers with a benziodoxole reagent.
abstract: The efficient azidation of β-keto esters and silyl enol ethers using a benziodoxole-derived azide transfer reagent is reported. The azidation of cyclic β-keto esters could be achieved in up to quantitative yields in the absence of any catalyst. In the case of less reactive linear β-keto esters and silyl enol ethers, complete conversion and good yields could be obtained by using a zinc catalyst.
authors.affiliation: Laboratory of Catalysis and Organic Synthesis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSO, BCH 4306, 1015 Lausanne, Switzerland.
authors.forename: Maria Victoria
authors.initials: MV
authors.lastname: Vita
authors.forename: Jérôme
authors.initials: J
authors.lastname: Waser