One-Pot Green Synthesis of 3'-(2-Aminobenzimidazolyl)-2-Phenyl Spiro[4H-Benzopyran-4,2'-Thiazolidin]-4-Ones and Acylation Using Trifluoroacetic Anhydride
作者:Kanti Sharma、Renuka Jain
DOI:10.1080/10426507.2011.557574
日期:2011.10
Excellent yields (85%–90%) and higher purity are obtained in the ionic-liquid-mediated synthesis as compared with the conventional procedure (55%–60%). Further, these compounds were acylated with trifluoroacetic anhydride. The structures of the compounds were confirmed by IR, 1H NMR, 13C NMR, mass spectral data, and elemental analysis. The compounds, upon evaluation for their antibacterial, antifungal, and
摘要 通过缩合取代的肼基苯并咪唑实现了一种新型杂环体系 3'-(2-氨基苯并咪唑基)-2-苯基螺[4H-苯并吡喃-4,2'-噻唑烷]-4-酮的快速一锅合成。 、黄烷酮和巯基乙酸通过在乙醇或甲苯中以及在离子液体中常规加热,即六氟磷酸 1-丁基-3-甲基-咪唑鎓。与传统方法 (55%–60%) 相比,离子液体介导的合成获得了优异的产率 (85%–90%) 和更高的纯度。此外,这些化合物用三氟乙酸酐酰化。化合物的结构经IR、1H NMR、13C NMR、质谱数据和元素分析确证。这些化合物在评价其抗菌、抗真菌和杀虫活性时表现出优异的效果。[本文有补充材料。访问出版商的在线版磷、硫和硅及相关元素,获取以下免费补充资源:表 S1、S2 和 S3] 图形摘要