Synthesis of 5-methyl-4-oxo-2-(coumarin-3-yl)-N-aryl-3,4-dihydrothieno[2,3-d]-pyrimidine-6-carboxamides
作者:Sergiy M. Kovalenko、Sergiy V. Vlasov、Valentin P. Chernykh
DOI:10.1002/hc.20303
日期:2007.5
Possible approaches to synthesis of 5-methyl-4-oxo-2-(coumarin-3-yl)-N-aryl-3,4-dihydrothieno[2,3-d]pyrimidine-6-carboxamides 4 have been discussed. It is shown that the preferable approach is cyclization of 2-iminocoumarin-3-carboxamides 1, utilizing 5-amino-3-methyl-N2-arylthiophene-2,4-dicarboxamides 2 as binucleophilic reagents. The proposed procedure allowed us to easily obtain 4 in two stages
已经讨论了合成 5-methyl-4-oxo-2-(coumarin-3-yl)-N-aryl-3,4-dihydrothieno[2,3-d]pyrimidine-6-carboxamides 4 的可能方法。结果表明,优选的方法是 2-亚氨基香豆素-3-甲酰胺 1 的环化,利用 5-氨基-3-甲基-N2-芳基噻吩-2,4-二甲酰胺 2 作为双亲核试剂。建议的程序使我们能够使用普通试剂在两个阶段轻松获得 4。© 2007 Wiley Periodicals, Inc. 杂原子化学 18:341–346, 2007; 在线发表于 Wiley InterScience (www.interscience.wiley.com)。DOI 10.1002/hc.20303