Malik, G. M. published the artcileSynthesis, characterization and dyeing properties of mono azo pyrazolone dyes based on 2-amino 5-methyl thiazole, Formula: C10H9ClN2O, the publication is International Journal of Chemistry (Mumbai, India) (2015), 4(3), 284-294, database is CAplus.
Different substituted monoazo pyrazolone dyes from N4-(5-methyl-1,3-thiazol-2-yl)-1,3-thiazole-2,4-diamine have been synthesized. The condensation of 5-Me 2-amino thiazole with chloroacetylchloride yielded 2-chloro-N-(5- methyl-1,3-thiazol-2-yl)acetamide which was reacted with thiourea at reflux temperature using methanol and cyclized to yield N4-(5-methyl-1,3-thiazol-2-yl)-1,3-thiazole-2,4-diamine. This was diazotized and coupled with various substituted pyrazolones to give a new series of pyrazolone dyes, which were characterized using elemental anal., UV, IR and 1H NMR spectra. Dyeing performance and fastness properties were evaluated by applying them on nylon and polyester fabrics.
International Journal of Chemistry (Mumbai, India) 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, Formula: C10H9ClN2O.
Referemce:
https://en.wikipedia.org/wiki/Pyrazole,
Pyrazoles – an overview | ScienceDirect Topics