Copper Acetate Catalyzed Regioselective Synthesis of Substituted 1,2,3-Triazoles: A Versatile Azide-Alkene Cycloaddition/Oxidation Approach
作者:Sandeep Rohilla、Shyam Sunder Patel、Nidhi Jain
DOI:10.1002/ejoc.201501301
日期:2016.2
A copperacetatecatalyzedoxidativecycloaddition reaction of benzyl and aryl azides with terminal and internal olefins that contain electron-withdrawing groups (COOR, CONH2, CN, CHO, COR) has been developed. The reaction employs air as the oxidant and does not require any base or additives to afford 1,4-disubstituted and 1,4,5-trisubstituted 1,2,3-triazoles in good to excellent yields with high regioselectivity
Base-Promoted Synthesis of <i>N</i>-Substituted 1,2,3-Triazoles via Enaminone–Azide Cycloaddition Involving Regitz Diazo Transfer
作者:Jie-Ping Wan、Shuo Cao、Yunyun Liu
DOI:10.1021/acs.orglett.6b02975
日期:2016.12.2
The domino reactions between NH-based secondary enaminones and tosyl azide have been developed for the synthesis of various N-substituted 1,2,3-triazoles by employing t-BuONa as the base promoter. Through a key Regitz diazo-transfer process with tosyl azide, the reactions proceed efficiently at room temperature with good substrate tolerance.