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A new and efficient method for the synthesis of pyrazolo[3,4-d] pyrimidines catalyzed by iodine

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Fully substituents new pyrazolo[3,4-d]pyrimidines were synthesized. The synthesis starts with cyanomethylphenylketone that reacts with phenyl hydrazine to give the corresponding aminopyrazole. The latter undergoes a cyclocondensation with an N,N'-bis(arylmethylidene)arylmethane yielding… Click to show full abstract

Fully substituents new pyrazolo[3,4-d]pyrimidines were synthesized. The synthesis starts with cyanomethylphenylketone that reacts with phenyl hydrazine to give the corresponding aminopyrazole. The latter undergoes a cyclocondensation with an N,N'-bis(arylmethylidene)arylmethane yielding the final product. Both synthetic steps are high-yielding (the overall yields between 65-78%). The newly synthesized compounds were characterized by 1H NMR, 13C NMR and elemental analysis

Keywords: efficient method; new efficient; pyrazolo pyrimidines; pyrazolo; method synthesis

Journal Title: Scientia Iranica
Year Published: 2018

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