Silica gel-supported TEMPO with adsorbed NOx for selective oxidation of alcohols under mild conditions

A column padding silica gel was used to support 2,2,6,6-tetramethylpiperdine-1-oxyl (TEMPO) and to adsorb NOx to provide an oxidant system for the selective oxidation of alcohols. A wide range of alcohols were oxidized to the corresponding aldehydes and ketones with high selectivities and conversions using this heterogeneous catalyst under mild conditions.

Graphical AbstractThe gas-solid one body catalyst, silica gel-TEMPO-NOx, was prepared by immbolizing TEMPO on silica gel and then absorbing NOx. Silica gel-TEMPO-NOx expressed good performance in the selective oxidation of alcohols under mild conditions.Figure optionsDownload as PowerPoint slide