| abstract |
The invention provides a method for preparing acid by oxidizing alcohol or aldehyde with oxygen or oxygen in the air as an oxidant. It is at room temperature in an organic solvent with iron nitrate (Fe(NO 3 ) 3 .9H 2 O), 2 , 2,6,6-tetramethylpiperidine nitrogen oxide (TEMPO) and inorganic halides are used as catalysts, oxygen or air is used as oxidant, and alcohol or aldehyde is oxidized to generate acid, and diol is oxidized to generate lactone; or, with Aldehydes are used as raw materials, and ferric nitrate is used as a catalyst to react under neutral conditions, and the aldehydes are oxidized to generate acid and peroxyacid. The invention has the advantages of environmental protection, low cost, high yield, high atom economy, good substrate functional group compatibility, mild reaction conditions, scalable reaction scale, etc., and is suitable for industrial production. |