Garapati, Venkata Krishna RaoGravel, Michel2020-12-212020-12-2110/1/2018Garapati, V. K. R.; Gravel, M. Org. Lett. 2018, 20, 6372-6375. https://doi.org/10.1021/acs.orglett.8b02636http://hdl.handle.net/10388/13181Oxazolium salts were successfully employed for the first time as organocatalysts for benzoin, Stetter, and redox esterification reactions. An N-mesityl oxazolium salt catalyzed homobenzoin reaction of aromatic, heteroaromatic, and aliphatic aldehydes delivered α-hydroxy ketones in high yields. This new type of catalyst proved remarkably effective for the Stetter reaction of challenging substrates such as β-alkyl-α,β-unsaturated ketones and electron-rich aromatic aldehydes in comparison to common thiazolium and triazolium salts.enOxazolium Salts as Organocatalysts for the Umpolung of AldehydesArticle10.1021/acs.orglett.8b02636