Diversity-oriented synthesis of 1,3-benzodiazepines
摘要:
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.
Silver-catalyzed Three-component Reaction of Propargylic Amines, Carbon Dioxide, and <i>N</i>-Iodosuccinimide for Stereoselective Preparation of (<i>E</i>)-Iodovinyloxazolidinones
作者:Kohei Sekine、Ryo Kobayashi、Tohru Yamada
DOI:10.1246/cl.150584
日期:2015.10.5
The stereoselective synthesis of (E)-bromovinyloxazolidinones was developed by the three-component reaction of propargylic amines, carbondioxide, and N-bromosuccinimide in the presence of a silver...
Copper-Catalyzed Reaction of Secondary Propargylamines with Ethyl Buta-2,3-dienoate for the Synthesis of 1,6-Dihydropyridines
作者:Chao Liu、Gaigai Wang、Yuqing Wang、Olga P. Pereshivko、Vsevolod A. Peshkov
DOI:10.1002/ejoc.201801227
日期:2019.3.14
A copper(I) bromide‐catalysed reaction of A3‐coupling‐derived propargylamines with ethyl buta‐2,3‐dienoate for the fast assembly of a 1,6‐dihydropyridine core is described. The possibility of a one‐pot synthesis of 1,6‐dihydropyridine through the A3‐coupling and subsequent ethyl buta‐2,3‐dienoate incorporation was investigated.
Efficient Microwave-Assisted Synthesis of Secondary Alkylpropargylamines by Using A<sup>3</sup>-Coupling with Primary Aliphatic Amines
作者:Jitender B. Bariwal、Denis S. Ermolat'ev、Erik V. Van der Eycken
DOI:10.1002/chem.200903143
日期:2010.3.15
Three‐component coupling reaction: An efficient, microwave‐assisted, CuI‐catalysed A3‐coupling reaction with primaryaliphaticamines that gives access to secondary propargylamines is described (see scheme).
Cationic Gold- and Silver-Catalyzed Cycloisomerizations of Propargylic Ureas: A Selective Entry to Oxazolidin-2-imines and Imidazolidin-2-ones
作者:Olga P. Pereshivko、Vsevolod A. Peshkov、Jeroen Jacobs、Luc Van Meervelt、Erik V. Van der Eycken
DOI:10.1002/adsc.201200905
日期:2013.3.11
gold(I) catalysis generally resulted in a formation of oxazolidin‐2‐imines as major products while the application of silver(I) triflate selectively provided the corresponding imidazolidin‐2‐ones. An attempt to rationalize the observed chemoselectivity is described. The scope of both processes was demonstrated through the use of variously substituted secondary propargylic amines.