SYNTHESIS AND OXIDATION OF AROMATIC SUBSTITUTED 6,7-DIHYDROPYRAZOLOPYRIMIDINES
Condensation of 5-amino-3-methylpyrazole with chalcone or dypnone gives aromatic substituted 6,7-dihydropyrazolopyrimidines which undrgo air oxidation.An x-ray structure for 2-methyl-6-hydroxy-5,7-diphenyl-6,7-dihydropyrazolopyrimidine is reported.