Highly efficient direct visible-light-mediated oxidative esterification of aldehydes.
Rickard LindrothHogan P Bryce-RogersThomas P M MerkeCarl-Johan WallentinPublished in: Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology (2022)
A very efficient one-pot procedure for the direct oxidation of aldehydes to esters mediated by visible-light is presented. Utilizing a combination of indium triflate and N-bromosuccinimide, NBS, with either ortho-esters or alcohols provided rapid access to a variety of esters. Certain substrates convert fully within a few seconds, other more challenging tert-butyl esters were formed in good yield after no more than 4 h.