作者:Liesa Röder、Alexander J. Nicholls、Ian R. Baxendale
DOI:10.3390/molecules24101996
日期:——
Continuous flow processing was applied for the rapid replacement of an aromatic amino group with a hydride. The approach was applied to a range of aromaticheterocycles, confirming the wide scope and substituent-tolerance of the processes. Flow equipment was utilized and the process optimised to overcome the problematically-unstable intermediates that have restricted yields in previous studies relying
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