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。