Use of ligand-assisted click reactions for the rapid synthesis of novel 1,2,3-triazole pharmacophore-based 1,2,4-triazines and their benzo-fused analogues
作者:Ali Keivanloo、Mohammad Bakherad、Mostafa Lotfi
DOI:10.1016/j.tet.2017.08.041
日期:2017.10
The click reaction was successfully employed for the synthesis of a series of new 1,2,3-triazole-based 1,2,4-triazinones and benzo[e][1,2,4]triazines from the reaction of 6-methyl-3-(prop-2-yn-1-ylthio)-1,2,4-triazin-5(4H)-one and 1,4-dihydro-3-(prop-2-ynylthio)benzo[e][1,2,4]triazine with aromatic azides or sodium azide and aliphatic halides in one-pot two- or three-component reactions. The Schiff
点击反应已成功地用于由6-甲基反应合成一系列新的1,2,3-三唑基1,2,4-三嗪酮和苯并[e] [1,2,4]三嗪-3-(丙-2-炔-1-基硫基)-1,2,4-三嗪-5(4 H)一和1,4-二氢-3-(丙-2-炔硫基)苯并[e] [1,2,4]三嗪与芳族叠氮化物或叠氮化钠和脂肪族卤化物,以一锅二或三组分形式存在反应。席夫碱配体加速了反应并减少了所需的有毒铜催化剂的量。该方法的主要优点是操作简便,反应时间短,反应产率高,反应条件温和且易于后处理。使用孔对所有新的基于1,2,3-三唑的1,2,4-三嗪及其形成的苯并稠合环系统进行筛选,以了解它们对革兰氏阳性和革兰氏阴性细菌的体外抗菌活性。 -扩散法。