REACTIONS OF COORDINATED BETA-KETOESTERS - A NEW ROUTE FOR THE SYNTHESIS OF 4-SUBSTITUTED-3-METHYL PHENYL-1-PHENYL PYRAZOL-5-ONES VIA A METAL CHELATED STABLE INTERMEDIATE
Sa. Samath et al., REACTIONS OF COORDINATED BETA-KETOESTERS - A NEW ROUTE FOR THE SYNTHESIS OF 4-SUBSTITUTED-3-METHYL PHENYL-1-PHENYL PYRAZOL-5-ONES VIA A METAL CHELATED STABLE INTERMEDIATE, Polyhedron, 12(10), 1993, pp. 1265-1267
Unsubstituted and gamma-substituted copper(II) complexes of beta-ketoe
sters on treatment with phenylhydrazine give ring-rearranged chelate i
ntermediates, which on subsequent demetallation afford the new 4-halo/
phenylamido-3-methyl/phenyl-1-phenyl pyrazol-5-ones. ones.