Xie, Chen published the artcileA facile catalytic Michael addition of pyrazolines to α,β-unsaturated carbonyl compounds, Related Products of pyrazoles-derivatives, the publication is Tetrahedron Letters (2012), 53(49), 6650-6653, database is CAplus.
A new highly efficient cascade reaction of pyrazolines with α,β-unsaturated carbonyl compounds catalyzed by DBU was reported. The process underwent the first deprotection/Michael addition reaction to give 4-substituted pyrazolines, e.g. I [R = Et, MeO, PhO, etc.; Ar = Ph, 4-ClC6H4], which were further converted into 4,4-di-substituted pyrazolones II via the second deprotection/Michael reaction. The mechanism for this reaction was also studied.
Tetrahedron Letters 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 C23H23ClN2O4, Related Products of pyrazoles-derivatives.
Referemce:
https://en.wikipedia.org/wiki/Pyrazole,
Pyrazoles – an overview | ScienceDirect Topics