Samath, S. Abdul published the artcileReactions of coordinated β-ketoesters. A new route for the synthesis of 4-substituted-3-methyl/phenyl-1-phenyl pyrazol-5-ones via a metal chelated stable intermediate, Formula: 0, the publication is Polyhedron (1993), 12(10), 1265-7, database is CAplus.
Unsubstituted and γ-substituted Cu(II) complexes of β-ketoesters on treatment with phenylhydrazine give ring-rearranged chelate intermediates, which on subsequent demetalation afford the new 4-halo/phenylamido-3-methyl/phenyl-1-Ph pyrazol-5-ones.
Polyhedron published new progress about 14284-06-1. 14284-06-1 belongs to copper-catalyst, auxiliary class Copper, name is Copper(II) ethylacetoacetate, and the molecular formula is 0, Formula: 0.
Referemce:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4660968/,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”