A facile synthesis of some novel fused [1,2,4]triazolo[3,4-b][1,3,4]thiadiazol derivatives
作者:Kerru Nagaraju、Yalagala Kotaiah、Chinnam Sampath、Nallapaneni Harikrishna、Chunduri Venkata Rao
DOI:10.1080/17415993.2012.734306
日期:2013.6.1
A series of novel 3-[6-(4-substituted phenyl)-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazol-3-ylmethyl]-5,6,7,8-tetrahydro[1]benzothieno[2,3-d]pyrimidin-4(3H)-one derivatives (7a–7h) have been synthesized from 2-amino-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carbonitrile (1) through a multi-step reaction sequence. The key intermediate (6) on condensation with various substituted aromatic carboxylic acids in
一系列新型3-[6-(4-取代苯基)-[1,2,4]三唑并[3,4-b][1,3,4]噻二唑-3-基甲基]-5,6,7 ,8-四氢[1]苯并噻吩并[2,3-d]嘧啶-4(3H)-one衍生物(7a-7h)由2-氨基-4,5,6,7-四氢苯并[b]噻吩合成-3-腈 (1) 通过多步反应序列。关键中间体 (6) 在磷酰氯存在下与各种取代的芳族羧酸缩合得到一系列标题化合物 (7a-7h)。所有新合成化合物的结构均基于其 IR、1H-NMR、13C-NMR 和液相色谱质谱数据。