Facile Synthesis of 4,5-Disubstituted 2<i>H</i>-1,2,3-Triazoles by Catalyst-free Cycloaddition between Substituted Vinyl Sulfones and Sodium Azide under Ambient Conditions
作者:Jinjin Yang、Wei Yin、Renhua Liu、Changhu Chu
DOI:10.1002/cjoc.201200998
日期:2012.12
4,5‐disubstituted 2H‐1,2,3‐triazoles was found. Under ambient conditions, a catalyst free cycloaddition between substituted vinyl sulfones and sodium azide could be completed in a very short time. In this cycloaddition process, sulfonyl group acts as a leaving group, while its ester group was retained.
发现了一种易于制备4,5-二取代的2 H -1,2,3-三唑的高效方法。在环境条件下,取代的乙烯基砜和叠氮化钠之间的无催化剂环加成反应可以在很短的时间内完成。在该环加成过程中,磺酰基充当离去基团,同时保留其酯基。