Lambert, Kyle M. published the artcileEnhancement of the Oxidizing Power of an Oxoammonium Salt by Electronic Modification of a Distal Group, Name: 4-Acetamido-2,2,6,6-tetramethyl-1-oxopiperidinium Tetrafluoroborate, the publication is Journal of Organic Chemistry (2017), 82(21), 11440-11446, database is CAplus and MEDLINE.
The multigram preparation and characterization of a novel TEMPO-based oxoammonium salt, 2,2,6,6-tetramethyl-4-(2,2,2-trifluoroacetamido)-1-oxopiperidinium tetrafluoroborate (5), and its corresponding nitroxide (4) are reported. The solubility profile of 5 in solvents commonly used for alc. oxidations differs substantially from that of Bobbitt’s salt, 4-acetamido-2,2,6,6-tetramethyl-1-oxopiperidinium tetrafluoroborate (1). The rates of oxidation of a representative series of primary, secondary, and benzylic alcs. by 1 and 5 in acetonitrile solvent at room temperature have been determined, and oxoammonium salt 5 has been found to oxidize alcs. more rapidly than does 1. The rate of oxidation of meta- and para-substituted benzylic alcs. by either 1 or 5 displays a strong linear correlation to Hammett parameters (r > 0.99) with slopes (ρ) of -2.7 and -2.8, resp., indicating that the rate-limiting step in the oxidations involves hydride abstraction from the carbinol carbon of the alc. substrate.
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, Name: 4-Acetamido-2,2,6,6-tetramethyl-1-oxopiperidinium Tetrafluoroborate.
Referemce:
https://en.wikipedia.org/wiki/Piperidine,
Piperidine | C5H11N – PubChem