An efficient, copper-based catalyst has been discovered that oxidizes a wide range of alcohols into aldehydes and ketones under mild conditions. This catalytic system utilizes oxygen or air as the ultimate, stoichiometric oxidant, producing water as the only by-product.
Marko, I., Giles, @., Tsukazaki, @., Brown, @., & Urch, @. (1996). Copper-Catalyzed Oxidation of Alcohols to Aldehydes and Ketones: An Efficient, Aerobic Alternative. Published. https://doi.org/10.1126/science.274.5295.2044 (Original work published 1996)