152992-76-2

Basic information

• Product Name: 4-Oxo-1-phenyl-4,5-dihydro-1H-pyrazolo[3,4-d]pyrimidine-3-carboxylic acid
• Synonyms: 4-Oxo-1-phenyl-4,5-dihydro-1H-pyrazolo[3,4-d]pyrimidine-3-carboxylic acid
• CAS NO: 152992-76-2
• Molecular Weight: 256.221
• Mol File: 152992-76-2.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: 4-Oxo-1-phenyl-4,5-dihydro-1H-pyrazolo[3,4-d]pyrimidine-3-carboxylic acid(CAS DataBase Reference)
• NIST Chemistry Reference: 4-Oxo-1-phenyl-4,5-dihydro-1H-pyrazolo[3,4-d]pyrimidine-3-carboxylic acid(152992-76-2)
• EPA Substance Registry System: 4-Oxo-1-phenyl-4,5-dihydro-1H-pyrazolo[3,4-d]pyrimidine-3-carboxylic acid(152992-76-2)

Safety Data

• Hazardous Substances Data: 152992-76-2(Hazardous Substances Data)

Upstream product

• 28663-68-5 ethyl chloro(2-phenylhydrazono)acetate 
• 64-18-6 formic acid 
• 93764-93-3 ethyl 5-amino-4-cyano-1-phenyl-1H-pyrazole-3-carboxylate 

Downstream Products

• 21314-17-0 1-phenyl-1,5-dihydro-4H-pyrazolo[3,4-d]pyrimidin-4-one 

Relevant articles and documents

Heterocyclic Synthesis Using Hydrazonoyl Halides: Synthesis of Annelated Pyrimidines, Pyridazines and Pyrazoles

Aminocyanopyrazoles and dihydropyrrolopyrazole-4,6-diones were obtained in good yields by the reaction of hydrazonoyl halides with malononitrile and N-arylmaleimides respectively. Pyrazolopyrimidines and pyrazolopyridazines were synthesized in quantitative yields by the reaction of formic acid or formamide and hydrazine hydrate with aminocyanopyrazoles. Novel ring systems, 4-mercapto-1,2,3,5,6,7-hexaazaacenaphthylenes 20 and 7-thia-1,2,4,5,6,10-hexaazacyclopentacenaphthylenes 22 were prepared by the reaction of 18 with carbon disulfide and the reaction of 21 with acetic anhydride. The structures of the products were assigned and confirmed on the basis of their elemental analyses, spectral data and alternate synthesis wherever possible.