Palladium-Catalyzed Intermolecular Alkene Carboacylation via Ester C–O Bond Activation
作者:Haley K. Banovetz、Kevin L. Vickerman、Colton M. David、Melisa Alkan、Levi M. Stanley
DOI:10.1021/acs.orglett.1c00940
日期:2021.5.7
We report palladium-catalyzed intermolecular carboacylation of alkenes with ester electrophiles and tetraarylborate nucleophiles. Bicyclic alkenes react with a variety of pentafluorophenyl benzoate and alkanoate esters and sodium tetraarylborates to form ketone products in ≤99% yields. These reactions occur in the absence of a directing group and demonstrate esters are competent acyl electrophiles
Across bonds: The first successful iridium‐catalyzed asymmetrichydroalkynylation of nonpolar alkenes with good to excellent enantioselectivity is described (see scheme; cod=1,5‐cyclooctadiene, DCE=1,2‐dichloroethane). This catalytic system exhibits good functional group compatibility as NH2, OH, Br, F, and SiMe3 groups remain intact during the reaction.