Lossen Rearrangement by Rh(III)-Catalyzed C-H Activation/Annulation of Aryl Hydroxamates with Alkynes: Access to Quinolone-containing Amino Acid Derivativesстатья
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Аннотация:A convenient and robust method for the preparation of new CF3-containing 2-quinolones has been developed via a Rh(III)-catalyzed C–H activation/Lossen rearrangement/annulation cascade of N-pivaloyloxy-arylamides with internal alkynes bearing an α-CF3-α-amino acid moiety on the triple bond. This work expands the scope of valuable products that are available through C–H activation/annulation reactions of arylamides in organic synthesis.