Katritzky, Alan R. published the artcileNovel chromophoric heterocycles based on maleimide and naphthoquinone, Quality Control of 27412-71-1, the main research area is heterocyclic dye pigment; halomaleimide condensation nucleophile; chloronaphthoquinone condensation nucleophile.
1-Phenyl-3,4-dichloromaleimide, 1-propyl-3-bromomaleimide, and 2,3-dichloro-1,4-naphthoquinone were condensed with nucleophiles such as pyrazole, 4-pyridone, imidazole, PhNHNH2, o-H2NC6H4OH, o-H2NC6H4SH, 1,2,4-triazole, benzotriazole, pyridine, etc., to yield a range of heterocyclic dyes and pigments, the visible absorption spectra of which were discussed.
Journal of Heterocyclic Chemistry published new progress about Dyes. 27412-71-1 belongs to class pyrazoles-derivatives, name is 5-Phenyl-1H-pyrazol-3(2H)-one, and the molecular formula is C9H8N2O, Quality Control of 27412-71-1.
Referemce:
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics