Investigation into the reaction of 2-amino-4,5-dimethylthiophene-3-carboxamide with iso(and isothio)cyanates under microwave irradiation
作者:Abolghasem Davoodnia、Mohammad Rahimizadeh、Hoda Atapour-Mashhad、Niloofar Tavakoli-Hoseini
DOI:10.1002/hc.20557
日期:——
with iso(and isothio) cyanates for the synthesis of thieno[2,3-d]pyrimidines has been investigated. The reactions under microwave irradiation in the presence of N,N-dimethyl acetamide as solvent gave 5,6-dimethylthieno[2,3-d]pyrimidine-2,4(1H,3H)-dione, 5,6-dimethyl-2-thioxo-2,3-dihy- drothieno[2,3-d]pyrimidin-4(1H)-one, and 2-aryla- mino-5,6-dimethylthieno[2,3-d]pyrimidin-4(3H)-one derivatives. These
已经研究了 2-氨基-4,5-二甲基-噻吩-3-甲酰胺与异(和异硫代)氰酸酯的反应,用于合成噻吩并 [2,3-d] 嘧啶。以N,N-二甲基乙酰胺为溶剂,在微波照射下反应得到5,6-二甲基噻吩并[2,3-d]嘧啶-2,4(1H,3H)-二酮,5,6-二甲基-2 -thioxo-2,3-dihydrothieno[2,3-d]pyrimidin-4(1H)-one, and 2-aryla-mino-5,6-dimethylthieno[2,3-d]pyrimidin-4(3H) )-一种衍生物。这些反应可能通过中间体 4,5-二甲基-2-取代氨基甲硫基氨基噻吩-3-甲酰胺进行。分离出这些中间体中的两种。© 2009 Wiley Periodicals, Inc. 杂原子化学 20:346–349, 2009; 在线发表于 Wiley InterScience (www.interscience