Abstract
By reaction of 6-dimethylamino-5-oxo-2-phenyl-5,6,7,8-tetrahydroquinazoline with hydrazine, phenylhydrazine, 4-bromo-, 4-chlorophenylhydrazines, and also reaction of 6-dimethylaminomethylene-5-oxo-2-(4-pyridyl)-5,6,7,8-tetrahydroquinazoline with hydrazine, 4-methoxy- and 2-carboxyphenylhydrazines, we have obtained the corresponding 7-phenyl(4-pyridyl)-substituted 1H(2H)- or 1-aryl-4,5-dihydropyrazolo[3,4-f]quinazolines. Methylation of 7-phenyl-4,5-dihydro-1(2H)-pyrazolo[3,4-f]quinazoline by methyl iodide led to its 2-methyl derivative.
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Tonkikh, N.N., Ryzhanova, K.V., Petrova, M.V. et al. 4,5-Dihydropyrazolo[3,4-f]quinazolines. Chemistry of Heterocyclic Compounds 39, 651–653 (2003). https://doi.org/10.1023/A:1025158518680
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DOI: https://doi.org/10.1023/A:1025158518680