76990-17-5

Upstream product

• 53645-78-6 1-phenyl-4-phenylpyrazolo<3,4-d>pyrimidine 
• 3336-65-0 (α-Aminobenzyliden)propandinitril 
• 89549-57-5 4-phenyl-4,5-dihydro-1-phenyl-1H-pyrazolo<3,4-d>pyrimidine-4-carboxylic acid 
• 5334-48-5 4-chloro-1-(phenyl)-1H-pyrazolo[3,4-d]pyrimidine 
• 59563-84-7 phenyl-(1-phenyl-1H-pyrazolo[3,4-d]pyrimidin-4-yl)-methanone 
• 76990-22-2 2-<(N,N-dimethylaminomethylene)amino>-1,1-dicyano-2-phenylethene 
• 62-53-3 aniline 
• 89549-77-9 Benzoic acid cyano-phenyl-(1-phenyl-1H-pyrazolo[3,4-d]pyrimidin-4-yl)-methyl ester 

Relevant academic research and scientific papers

Studies on Pyrazolopyrimidine Derivatives. XIII. Aryl Migration of 4-Aroyl-1H-pyrazolopyrimidines to 4-Aryl-4,5-dihydro-1H-pyrazolopyrimidine-4-carboxylic Acids

When a mixture of 4-aroyl-1-phenyl-1H-pyrazolopyrimidines (3) and sodium hydroxide in dimethyl sulfoxide (DMSO) was stirred for 1 h at room temperature, migration of the aryl group to the 4-position occurred, i.e., the benzilic acid rearrangement,

Syntheses with Nitriles. 60. Preparation of 4-Amino-5-cyano-6-phenylpyrimidines from 2-Amino-1,1-dicyano-2-phenylethene

The reaction of 2-amino-1,1-dicyanobut-1-ene and 2-amino-1,1-dicyano-2-phenylethene, respectively, with N,N-dimethylformamide dimethylacetal provided the corresponding (N,N-dimethylaminomethylene)amino derivatives. 2--1,1-dicyano-2-phenylethene was converted into 4-amino-5-cyano-6-phenylpyrimidines by treatment with primary aliphatic and aromatic amines.The structure of the reaction products was confirmed by 13C nmr spectroscopy.