Abstract
With 1,1,1-trifluoro-2-iodoethane as catalyst, a novel and efficient procedure has been developed for preparation of α-tosyloxyketones from ketones. In this protocol, 1,1,1-trifluoro-2-iodoethane is first oxidized by m-chloroperbenzoic acid to a hypervalent iodine intermediate. The in situ–generated active iodine species then reacts with ketones to afford the corresponding α-tosyloxyketones in good yields.
GRAPHICAL ABSTRACT
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Notes
a Isolated yields.
a Isolated yield.