Synthesis of new 1-(3,4-dimethylphenyl)-1,5-dihydropyrazolo[3,4-d]pyrimidin-4-one derivatives
作者:M. E. Zhidkov、A. V. Kutkin、E. N. Fetisova、D. M. Zverev、N. V. Zaraeva、V. V. Gorokhov、O. V. Chubarova
DOI:10.1134/s1070428017040157
日期:2017.4
New substituted pyrazolo[3,4-d]pyrimidin-4-ones have been synthesized as a result of a series of transformations including hydrolysis of ethyl 5-amino-1H-pyrazole-4-carboxylates, cyclization of the carboxylic acids thus obtained to pyrazolo[3,4-d][1,3]oxazin-4(1H)-ones, and treatment of the latter with substituted anilines. The final pyrazolo[3,4-d]pyrimidin-4-one derivatives can also be synthesized
由于一系列转化的结果,包括5-氨基-1 H-吡唑-4-羧酸乙酯的水解,羧酸环化的合成,合成了新的取代的吡唑并[3,4- d ]嘧啶-4-酮。制备吡唑并[3,4- d ] [1,3]恶嗪-4(1 H)-酮,并用取代的苯胺处理后者。最终的吡唑并[3,4- d ]嘧啶-4-酮衍生物也可以在催化量的无水氯化锌(II)存在下,由5-(芳基)-1 H-吡唑-4-羧酸合成。 。