Convenient synthesis of substituted 2-(2-iminocoumarin-3-yl)thieno[2,3-d]pyrimidin-4-ones
作者:Pavlo E. Shynkarenko、Sergiy V. Vlasov、Sergiy M. Kovalenko、Svitlana V. Shishkina、Oleg V. Shishkin、Valentin P. Chernykh
DOI:10.1002/jhet.219
日期:——
of both 2‐iminocoumarin‐3‐carbonitriles and 2‐iminocoumarin‐3‐carbothioamides with 2‐aminothiophen‐3‐carboxamides lead to formation of 3‐(4‐oxo‐3,4‐dihydrothieno[2,3‐d]pyrimidin‐2‐yl)‐2‐iminocoumarins in two steps. The simplicity of the procedure, as well as the high yields of the target products make this method to be a good alternative of Knoevenagel condensation for the synthesis of 3‐(4‐oxo‐3,4‐dihydrothieno[2
2-亚氨基香豆素-3-腈和2-亚氨基香豆素-3-碳硫代酰胺与2-氨基噻吩-3-碳酰胺的相互作用导致形成3-(4-氧代-3-3,4-二氢噻吩并[2,3- d ]嘧啶-2-基)-2-亚氨基香豆素分两步进行。该方法的简便性以及目标产物的高收率使该方法成为Knoevenagel缩合反应合成3-(4-oxo-3,4-dihydrothienono [2,3- d ]的良好选择)嘧啶-2-基)-2-亚氨基香豆素。J.杂环化学。(2010)。