[Condensation of 3-phenyl-5-aminopyrazolo with acylpyruvic and ethoxymethylenacetic esters].
The synthesis of ethyl 2-phenyl-7-alkyl (or 7-phenyl)pyrazolo[1,5-a]pyrimidine-5-carboxylate and ethyl 2-phenyl-7-alkyl (or 7-phenyl)pyrazolo[1.5-a]pyrimidine-6-carboxylate are reported. Decarboxylation of the acids, obtained by hydrolysis of the above esters, yields the same compounds. N.M.R. data on the reduction products of the ethyl 6-carboxylate confirm all the assigned structures.
D000085:Acetates; D002264:Carboxylic Acids / Q000138:chemical synthesis; D006868:Hydrolysis; D009682:Magnetic Resonance Spectroscopy; D011720:Pyrazoles / Q000138:chemical synthesis*; D011743:Pyrimidines / Q000138:chemical synthesis; D011773:Pyruvates
D000085:Acetates; D002264:Carboxylic Acids; D011720:Pyrazoles; D011743:Pyrimidines; D011773:Pyruvates
Condensazione del 3-fenil-5-aminopirazolo con esteri acilpiruvici ed etossimetilenacilacetici.