One-pot synthesis of 1,2,4-oxadiazoles from chalcogen amino acid derivatives under microwave irradiation
作者:Lucas Wolf、João C.P. Mayer、Natália Quoos、André C. Sauer、Ricardo S. Schwab、Oscar E.D. Rodrigues、Luciano Dornelles
DOI:10.1016/j.tet.2021.132222
日期:2021.7
A series of sulfur- and selenium-bearing, amino acid-derived 1,2,4-oxadiazoles were obtained by a simple procedure. The method consists of EDC-promoted coupling of chalcogen amino acid derivatives with arylamidoximes in acetone, followed by solvent removal and microwave irradiation in water medium. Influence of amidoxime substituents, of the chalcogen atom and of the amino acid side chain is discussed
通过简单的程序获得了一系列含硫和硒的氨基酸衍生的 1,2,4-恶二唑。该方法包括 EDC 促进的硫属元素氨基酸衍生物与芳基酰胺肟在丙酮中的偶联,然后在水介质中去除溶剂和微波辐射。讨论了胺肟取代基、硫属元素原子和氨基酸侧链的影响。结果表明,这是获得这些化合物的一种快速、简单和有效的方法,具有良好的官能团耐受性,可能有利于未来在有机合成中的应用。