An Efficient Synthesis and Antibacterial Activity of Some Novel 2-Azetidinone Derivatives of 4H-1,2,4-Triazoles Under Mild Conditions
作者:Takallum Khan、Ritu Yadav、Surendra Singh Gound
DOI:10.1002/jhet.3136
日期:2018.4
We have synthesized the novel 2‐azetidinone derivatives by using Schiff bases of 1,2,4‐triazoles via a single step protocol. We used DABCO as a good homogenous, ecofriendly, highly reactive, easy to handle, and nontoxic catalyst. In DABCO catalyzed synthesis of active 2‐oxo‐azetidine, a highly electrophilic ketene intermediate can react with weakly nucleophilic (N═CH) linkage, which is used as the
我们通过一步法使用1,2,4-三唑的席夫碱合成了新颖的2-氮杂环丁酮衍生物。我们使用DABCO作为良好的均质,环保,高反应性,易于处理且无毒的催化剂。在DABCO催化的活性2-氧-氮杂环丁烷的合成中,高度亲电子的乙烯酮中间体可与弱亲核(N═CH)键反应,用作环加成反应的前体,从而以质子溶剂以优异的产率提供所需的产物。另外,DABCO作为经济上可行的和容易获得的催化剂可溶于几乎所有溶剂中,并且其盐易于从反应介质中滤出。而且,这种新的合成方案具有绿色溶剂中的高转化率和简单的操作步骤的特点。