Skeletal Fusion of Small Heterocycles with Amphoteric Molecules
作者:Lawrence L. W. Cheung、Zhi He、Shannon M. Decker、Andrei K. Yudin
DOI:10.1002/anie.201106024
日期:2011.12.2
three contiguous stereocenters was prepared from a [3+2] annulation involving amphoteric aziridine aldehydes and isocyanates and further converted to a series of densely functionalized hetercycles, which are difficult to synthesize using established methods. The results highlight the potential of (1,3) amphotericmolecules to construct heterocyclic scaffolds using trivial starting materials.
Diversity-oriented synthesis of 1,3-benzodiazepines
作者:Gaigai Wang、Chao Liu、Binbin Li、Yingchun Wang、Kristof Van Hecke、Erik V. Van der Eycken、Olga P. Pereshivko、Vsevolod A. Peshkov
DOI:10.1016/j.tet.2017.09.034
日期:2017.11
A concise assembly of the 1,3-benzodiazepine core from A(3')-coupling-derived propargylamines and ortho-bromophenylisocyanates is described. The developed synthetic sequence involves the addition of propargylamine to isocyanate followed by palladium-catalyzed intramolecular alkyne hydroarylation that could be accomplished in a stepwise or one-pot manner. (C) 2017 Elsevier Ltd. All rights reserved.