Synthesis of Various Pyrazolo[4′,3′ : 5,6]pyrano[3,2-<i>e</i>] [1,2,4]triazolo[1,5-<i>c</i>]pyrimidines and Pyrazolo[4″,3″ : 5′,6′]pyrano[2′,3′ : 4,5]pyrimido[1,6-<i>b</i>] [1,2,4]triazines
作者:Mansour Ismail Younes、Saoud Abdel Monem Metwally、Aly Hussein Atta
DOI:10.1055/s-1990-26989
日期:——
A number of heterocyclic compounds 5-13 were prepared by the reaction of 6-amino-1,4,5,6-tetrahydro-5-imino-3-methyl-1,4-diphenylpyrazolo [4′,3′:5,6]pyrano[2,3-d]pyrimidine (3) with ethyl 2-cyano-3-ethoxy-2-propenoate, ethoxymethylenemalononitrile, ethyl cyanoacetate, malononitrile, ethyl pyruvate, oxalyl chloride, ethyl chloroformate, and 3-methyl-4-nitroso-1-phenylpyrazol-5(4H)-one, respectively.
通过 6-氨基-1,4,5,6-四氢-5-亚氨基-3-甲基-1,4-二苯基吡唑并[4′,3′:5,6]吡喃并[2,3-d]嘧啶 (3) 分别与 2-氰基-3-乙氧基-2-丙烯酸乙酯、乙氧基亚甲基丙二腈、氰乙酸乙酯、丙二腈、丙酮酸乙酯、草酰氯、氯甲酸乙酯和 3-甲基-4-亚硝基-1-苯基吡唑-5(4H)-酮反应。