作者:Hila Toledo、Evgeni Pisarevsky、Adi Abramovich、Alex M. Szpilman
DOI:10.1039/c2cc35220f
日期:——
TEMPO catalyzes the direct oxidation of aldehydes to mixed anhydrides in the presence of a carboxylic acid. The anhydrides can be converted in situ to esters, secondary, tertiary or Weinreb amides in high yield. Oxidation of the aldehyde directly to 2-propyl esters is also possible using only catalytic amounts of acid. The oxidation reactions are rapid and take place under mild conditions.
TEMPO在羧酸的存在下催化醛直接氧化为混合酸酐。酸酐可以高产率原位转化为酯,仲,叔或Weinreb酰胺。仅使用催化量的酸,也可以将醛直接氧化为2-丙基酯。氧化反应迅速并且在温和的条件下进行。