Merbouh, Nabyl published the artcileOxoammonium salts. Part 8: Oxidations in base: oxidation of O-1 unprotected monosaccharides to lactones using 4-acetylamino-2,2,6,6-tetramethylpiperidine-1-oxoammonium tetrafluoroborate, HPLC of Formula: 219543-09-6, the publication is Tetrahedron Letters (2001), 42(50), 8793-8796, database is CAplus.
The oxidant, 4-acetylamino-2,2,6,6-tetramethylpiperidine-oxoammonium tetrafluoroborate in pyridine/CH2Cl2, is reported to be an excellent reagent for the conversion of hemiacetals to lactones. Specifically, the conversion of 1-O unprotected sugars to their corresponding aldonolactones is achieved in high yields. The basic reaction conditions partially overcome some disadvantages reported for oxoammonium-type oxidants, namely the inability to run the reaction in the presence of acid-labile groups and in the presence of β-oxygens.
Tetrahedron Letters 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, HPLC of Formula: 219543-09-6.
Referemce:
https://en.wikipedia.org/wiki/Piperidine,
Piperidine | C5H11N – PubChem