Patel, N. C. published the artcileSynthesis and application of some bisazo disperse dyes based on 4-hydroxyquinolinoquinazoline system on polyester fabric, Name: 1-(2-Chlorophenyl)-3-methyl-5-pyrazolone, the publication is Journal of Indian Council of Chemists (2001), 18(2), 83-86, database is CAplus.
Ten 3-(4′-R-azo-1′-phenylazo)-4-hydroxyquinolino-[1,2-b]-4-oxoquinazolines were prepared by coupling diazotized 3-(4′-amino-1′-phenylazo)-4-hydroxyquinolino-[1,2-b]-4-oxoquinazoline with various coupling components. 4-Hydroxyquinolino-[1,2-b]-4-oxoquinazoline (I) was prepared by the condensation of 2-methyl-1,3-benzoxazin-8-one with anthranilic acid, giving initially 2-methyl-3-(1-carboxyphenyl)-4-oxoquinazoline followed by the ring closure. I was coupled with diazotized p-aminoacetanilide followed by hydrolysis to give 3-[4′-amino-1′-phenylazo]-4-hydroxyqinolino[1,2-b]-4-oxoquinazoline. The bisazo disperse dyes were characterized by elemental and spectral analyses and their dyeing performance on polyester fabric was assessed. These compounds when applied on polyester fabric, gave shades with poor to good light fastness, very good to excellent wash fastness and poor to excellent exhaustion.
Journal of Indian Council of Chemists published new progress about 14580-22-4. 14580-22-4 belongs to pyrazoles-derivatives, auxiliary class Organic Pigment, name is 1-(2-Chlorophenyl)-3-methyl-5-pyrazolone, and the molecular formula is C10H9ClN2O, Name: 1-(2-Chlorophenyl)-3-methyl-5-pyrazolone.
Referemce:
https://en.wikipedia.org/wiki/Pyrazole,
Pyrazoles – an overview | ScienceDirect Topics