Iodine-promoted one-pot synthesis of 1,3,4-oxadiazole scaffolds <i>via</i> sp<sup>3</sup> C–H functionalization of azaarenes
作者:Geeta Sai Mani、Kavitha Donthiboina、Nagula Shankaraiah、Ahmed Kamal
DOI:10.1039/c9nj03573g
日期:——
for the synthesis of 2,5-disubstituted 1,3,4-oxadiazole scaffolds has been developed via sp3 C–H functionalization. Gratifyingly, this method involves oxidative amination with concomitant base-mediated cyclization of methylhetarenes and acylhydrazines by employing iodine and Cs2CO3. The key features of the present method include good functional group tolerance, a clean protocol, metal-free conditions
通过sp 3 C–H官能化开发了一种有效的碘介导的一锅合成方案,用于合成2,5-二取代的1,3,4-恶二唑支架。令人欣慰的是,该方法涉及通过使用碘和Cs 2 CO 3进行氧化胺化反应,并伴随碱介导的甲基戊烯和酰基肼的环化反应。本方法的关键特征包括良好的官能团耐受性,清洁的方案,无金属的条件和高收率,使得该方案成为合成生物活性分子及其关键构件的有吸引力的策略。
Preparation and Acetylcholinesterase Inhibitory Activities of Pyridine-Based 1,3,4-Oxadiazole Derivatives