Wertz, Sebastian published the artcileAmination of Benzoxazoles and 1,3,4-Oxadiazoles Using 2,2,6,6-Tetramethylpiperidine-N-oxoammonium Tetrafluoroborate as an Organic Oxidant, Category: piperidines, the publication is Angewandte Chemie, International Edition (2011), 50(48), 11511-11515, S11511/1-S11511/116, database is CAplus and MEDLINE.
No transition metals are necessary to convert benzoxazoles and 1,3,4-oxadiazoles into the corresponding pharmacol. interesting 2-aminated heterocycles by formal direct C(2)-amination using tetramethylpiperidine-N-oxoammonium tetrafluoroborate (TEMPO+BF4–) as an oxidant. Mechanistic studies were carried out, and the methodol. was also applied to the preparation of racemic MK-4305.
Angewandte Chemie, International Edition 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 C3H5BN2O2, Category: piperidines.
Referemce:
https://en.wikipedia.org/wiki/Piperidine,
Piperidine | C5H11N – PubChem