Latest Research Discoveries | Xuebin LIAO research group publishes “In situ generation of N-unsubstituted imines from alkyl azides & applications for imine transfer” in Science Advances
Although azides have been widely used in nitrene transfer reactions, in situ generation of N-H imines from azides for downstream transformations has rarely been explored. We report copper-mediated formation of N-unsubstituted aliphatic imines from easily available aliphatic azides using a customized phenanthroline-based ligand (L1*). Through trapping in situ–generated N-H imines, multisubstituted pyridines or indoles were readily synthesized. 13C-labeled azide was used as part of an isotope labeling study, which suggests that the construction of pyridine derivatives involves a three-component dehydrogenative condensation. The construction of 2,3,5-triaryl pyridines using this method provided evidence supporting a proposed pathway involving both imine formation and abnormal Chichibabin pyridine synthesis. The generation of N-unsubstituted imine intermediates was also confirmed by formation of indole derivatives from alkyl azides.


FriendShip Contact Address Contact Us
Tsinghua University

Medical Science Building, Tsinghua University, Beijing

E-mail: sps@tsinghua.edu.cn

Copyright © SPS ALL RIGHTS RESERVED

备案号：23587890