Merbouh, Nabyl published the artcileOxoammonium Salts. 9. Oxidative Dimerization of Polyfunctional Primary Alcohols to Esters. An Interesting β Oxygen Effect, Application of 4-Acetamido-2,2,6,6-tetramethyl-1-oxopiperidinium Tetrafluoroborate, the publication is Journal of Organic Chemistry (2004), 69(15), 5116-5119, database is CAplus and MEDLINE.
The use of the oxidant 4-acetylamino-2,2,6,6-tetramethylpiperidine-1-oxoammonium tetrafluoroborate in combination with pyridine for the oxidative, dimeric esterification of primary alcs. is described. The ester is the predominant product of the reaction with alcs. containing a β oxygen. In the absence of a β oxygen, the corresponding aldehyde is found in appreciable amounts, but a concentration effect can be observed In the absence of pyridine, little ester is formed, and no appreciable reaction takes place with β-oxygenated compounds δ Lactones have been prepared from diethylene glycol and 2,2′-thiodiethanol, without sulfur oxidation
Journal of Organic Chemistry published new progress about 219543-09-6. 219543-09-6 belongs to piperidines, auxiliary class Piperidine,Fluoride,Salt,Amine,Amide, name is 4-Acetamido-2,2,6,6-tetramethyl-1-oxopiperidinium Tetrafluoroborate, and the molecular formula is C11H21BF4N2O2, Application of 4-Acetamido-2,2,6,6-tetramethyl-1-oxopiperidinium Tetrafluoroborate.
Referemce:
https://en.wikipedia.org/wiki/Piperidine,
Piperidine | C5H11N – PubChem