The synthesis of substituted pyrido[1′,2′:1,5]pyrazolo[3,4-<i>d</i>]pyrimidines
作者:P. Molina、A. Arques、H. Hernandez
DOI:10.1002/jhet.5570210311
日期:1984.5
A convenient synthesis of derivatives of the pyrido[1′,2′:1,5]pyrazolo[3,4-d]pyrimidine ring system from readily available 2-amino-3-cyano-5,7-diphenylpyrazolo[1,5-a]pyridine I and carbon disulfide, aryl isothiocyanates or nitriles is described. Derivatives of compound I undergo cyclization to the titled ring system by action of dimethylformamide dimethylacetal or hydrogen sulfide followed by treatment
从容易获得的2-氨基-3-氰基-5,7-二苯基吡唑并[1,5]方便地合成吡啶并[1',2':1,5]吡唑并[3,4- d ]嘧啶环系统的衍生物-描述了]吡啶I和二硫化碳,异硫氰酸芳基酯或腈。通过二甲基甲酰胺二甲基乙缩醛或硫化氢的作用,将化合物I的衍生物环化成标题的环系统,然后用三乙胺处理。
ARQUES, A.;HERNANDEZ, H.;MOLINA, P.;VILAPLANA, M. J., SYNTHESIS, BRD, 1981, N 11, 910-912
作者:ARQUES, A.、HERNANDEZ, H.、MOLINA, P.、VILAPLANA, M. J.
DOI:——
日期:——
MOLINA, P.;ARQUES, A.;HERNANDEZ, H., J. HETEROCYCL. CHEM., 1984, 21, N 3, 685-688