Hack, Daniel published the artcileCombining silver- and organocatalysis: an enantioselective sequential catalytic approach towards pyrano-annulated pyrazoles, Name: 1-(2-Chlorophenyl)-3-methyl-5-pyrazolone, the publication is Chemical Communications (Cambridge, United Kingdom) (2015), 51(12), 2266-2269, database is CAplus and MEDLINE.
A one-pot asym. Michael addition/hydroalkoxylation sequence, catalyzed by a sequential catalytic system consisting of a squaramide and a silver salt, provides a new series of chiral pyrano-annulated pyrazole derivatives, e.g., I, in excellent yields (up to 95%) and high enantioselectivities (up to 97% ee).
Chemical Communications (Cambridge, United Kingdom) 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