<scp>2‐Amino</scp>‐4‐arylthiophene‐3‐carbonitrile and formamidine acetate as key building units for the synthesis of <scp>5‐arylthieno</scp>[2,3‐<i>d</i>]pyrimidin‐4‐amines
作者:Farzaneh Alizadeh‐Bami、Hossein Mehrabi、Maryam Hosseini‐pour
DOI:10.1002/jhet.4727
日期:2023.11
method for the synthesis of 5-arylthieno[2,3-d]pyrimidin-4-amine analogues via three-step reactions and examined the changes in the solvent, time, and temperature. A novel condition has been developed for the preparation of substituted 2-aminothiophenes employing the Knoevenagel condensation followed by the Gewald method and in the last step to form thieno[2,3-d]pyrimidines by using formamidine acetate
我们试图建立一种通过三步反应合成5-芳基噻吩并[2,3- d ]嘧啶-4-胺类似物的方法,并考察了溶剂、时间和温度的变化。开发了一种新的条件,用于制备取代的 2-氨基噻吩,采用 Knoevenagel 缩合,然后采用 Gewald 方法,最后一步使用乙酸甲脒形成噻吩并[2,3- d ]嘧啶。所有合成的5-芳基噻吩并[2,3- d ]嘧啶-4-胺都是未知的,并通过IR、1 H-NMR、13 C-NMR和CHN分析进行了表征。