Domino Meyer-Schuster/Arylation Reaction of Alkynols or Alkynyl Hydroperoxides with Diazonium Salts Promoted by Visible Light under Dual Gold and Ruthenium Catalysis
作者:Benito Alcaide、Pedro Almendros、Eduardo Busto、Amparo Luna
DOI:10.1002/adsc.201600158
日期:2016.4.28
alkynyl hydroperoxides using equimolar amounts of diazoniumsalts at room temperature has been achieved through application of a gold/photoredox dual catalytic system. The excess of external reagents (oxidant or base) and high temperatures required by previous arylative Meyer–Schuster rearrangement protocols are avoided by exploitation of a visiblelight‐mediated process.
hydroacylation of α-substituted α,β-unsaturated carbonyl compoundsthrough direct hydrogen atom transfer in the presence of the photocatalyst anthraquinone and chiral N,N′-dioxide/metal complexes. This mild, robust method provided a facile access to a wide array of chiral ketones with α-tertiary stereocenters by using the readily available aldehyde as a hydroacylation reagent. Based on the spectroscopy experiments