Classic organic reactions exist for the synthesis of acyloins. 
* The acyloin condensation is a reductive coupling of esters
* The benzoin condensation is condensation reaction between aldehydes catalyzed by a nucleophile
* Oxidation of carbonyls is possible with molecular oxygen but not selective
* Better alternative is oxidation of corresponding silyl enol ethers with mCPBA in the Rubottom oxidation
* MoOPH oxidation of carbonyls is a system with molybdenum peroxide, pyridine and hexamethylphosphoramide.