A Simple Access in One Step to Some New Substituted Pyrazolo- and [1,2,4]triazolo-[1,5-a]pyrimidines
作者:Monaem Balti、Khaireddine Dridi、Mohamed Lotfi El Efrit
DOI:10.2174/1570178611310020009
日期:2013.4.1
A convenient method was established for the synthesis of some new 6,7-dihydro-2-(methylthio)-5- aminopyrazolo[1,5-a]pyrimidine-3-carbonitriles 4 and -[1,2,4]triazolo[1,5-a]pyrimidin-5-amines 5 from β- cyanohydrazines 3 and suitable ketene dithioketals 2-[bis(methylthio)methylene]propanedinitrile 1 and dimethyl Ncyanocarbonimidodithioate 2, respectively in good yields. The structure of the title compound
建立了一种方便的方法,用于合成一些新的6,7-二氢-2-(甲硫基)-5-氨基吡唑并[1,5-a]嘧啶-3-腈4和-[1,2,4]三唑并[来自β-氰基肼3的1,5-a]嘧啶-5-胺5和合适的乙烯酮二硫缩酮2- [双(甲硫基甲基)亚甲基]丙腈1和Ncyanocarbonimidodithioate二甲基二甲酯。标题化合物的结构通过IR,EA,1 H-和13 C-NMR表征。