New route to 2-arylthieno[2,3-d]pyrimidin-4(3H)-ones and isolation of the unoxidized intermediates
作者:Abolghasem Davoodnia、Mehdi Bakavoli、Mehdi Soleimany、Niloofar Tavakoli-Hoseini
DOI:10.1007/s00706-008-0032-3
日期:2009.3
AbstractA new route to the synthesis of 2-arylthieno[2,3-d]pyrimidin-4(3H)-ones has been developed through heterocyclization of 2-amino-4,5-dimethylthiophene-3-carboxamide with aromatic aldehydes in boiling glacial acetic acid followed by air oxidation. The unoxidized intermediates, 2-aryl-2,3-dihydrothieno[2,3-d]pyrimidin-4(1H)-ones, are isolated when the reactions are carried out either at room temperature
摘要通过在沸腾的冰河中将2-氨基-4,5-二甲基噻吩-3-羧酰胺与芳香醛杂环化,已开发出一种合成2-芳基噻吩并[2,3-d]嘧啶-4(3H)-的新途径。醋酸,然后进行空气氧化。当在室温或在氮气氛下进行反应时,分离出未氧化的中间体2-芳基-2,3-二氢噻吩并[2,3- d ]嘧啶-4(1 H)-酮。 图形概要