Regioselective synthesis of 1,2,4-triazol-3(2H)-ones and their 3(2H)-thiones: Kinetic studies and selective pyrolytic deprotection
作者:Nouria A. Al-Awadi、Yehia A. Ibrahim、Kamini Kaul、Hicham Dib
DOI:10.1002/hc.10086
日期:——
deprotection of 2-ethyl and 2-cyanoethyl-4-arylidenimino-1,2,4-triazol-3(2H)-ones and their 3(2H)-thiones was studied by flash vacuum pyrolysis. This study is useful in regioselective synthesis of 2- and 4-substituted 1,2,4-triazoles of potential biological applications. The kinetic results and product analysis lend support to a reaction pathway involving a six-membered transition state. © 2003 Wiley Periodicals
通过快速真空热解研究了 2-乙基和 2-氰基乙基-4-芳基亚氨基-1,2,4-三唑-3(2H)-ones 和它们的 3(2H)-硫酮的选择性热解脱保护。该研究可用于区域选择性合成具有潜在生物学应用的 2-和 4-取代的 1,2,4-三唑。动力学结果和产物分析支持涉及六元过渡态的反应途径。© 2003 Wiley Periodicals, Inc. 杂原子化学 14:50–55, 2003; 在线发表于 Wiley InterScience (www.interscience.wiley.com)。DOI 10.1002/hc.10086