Kwak, Se Hun published the artcileN-Aminopyridinium Ylide-Directed, Copper-Promoted Amination of sp2 C-H Bonds, HPLC of Formula: 930-36-9, the publication is Journal of Organic Chemistry (2019), 84(20), 13022-13032, database is CAplus and MEDLINE.
N-Aminopyridinium ylides were used as monodentate directing groups for copper-promoted C-H/N-H coupling of sp2 C-H bonds with pyrazoles, imidazoles, and sulfonamides. Reactions proceed in fluorinated alc. solvents at elevated temperatures and require use of 1.3-3 equiv of copper(II) acetate. This appears to be the first method for copper-promoted C-H/N-H coupling directed by a removable monodentate auxiliary in absence of added ligands.
Journal of Organic Chemistry published new progress about 930-36-9. 930-36-9 belongs to pyrazoles-derivatives, auxiliary class Pyrazole, name is 1-Methylpyrazole, and the molecular formula is C4H6N2, HPLC of Formula: 930-36-9.
Referemce:
https://en.wikipedia.org/wiki/Pyrazole,
Pyrazoles – an overview | ScienceDirect Topics