Enantioselective Photooxygenation of β‐Keto Esters by Chiral Phase‐Transfer Catalysis using Molecular Oxygen

Seen to be green: A highly efficient and green method for catalyzing the enantioselective photooxygenation of β-keto esters with molecular oxygen in the presence of chiral phase-transfer catalysts has been developed. High yields (up to 93 %) and good enantiomeric excesses (up to 75 %) could be obtained, and a plausible reaction mechanism has been proposed to explain the outcome of the reaction. Detailed facts of importance to specialist readers are published as ”Supporting Information”. Such documents are peer-reviewed, but not copy-edited or typeset. They are made available as submitted by the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.