acid-catalyzed [3+1+1] cycloaddition reaction between aliphatic isocyanides and azomethineylides generated in situ from aziridines, leading to pyrrolidine derivatives, has been developed. This reaction proceeds smoothly under mild conditions and can also be modified by employing aromatic isocyanides to generate four-membered heterocycles, azetidines, through a [3+1] cycloaddition reaction.
Y(OTf)3-Catalyzed Diastereoselective [3+2] Cycloaddition of N-Tosylaziridines and Imines; Efficient Synthesis of Multisubstituted Imidazolidines
作者:Junliang Zhang、Xingxing Wu
DOI:10.1055/s-0031-1290816
日期:2012.7
Abstract An efficient Y(OTf)3-catalyzed generation of azomethine ylides from donor–acceptor aziridines and their [3+2] cycloaddition with imines was developed. The method provides facile access to multisubstituted imidazolidines, which have been extensively used in organic synthesis. Furthermore, a three-component reaction on a gram scale and an asymmetric variation were also developed in this work
Efficient Synthesis of Diarylmethylamines via Lewis Acid Catalyzed Friedel–Crafts Reactions of Donor–Acceptor Aziridines with N,N-Dialkylanilines
作者:Yerin Kim、Yong Il Kwon、Sung-Gon Kim
DOI:10.1055/s-0039-1690731
日期:2020.1
A method for efficient and mild synthesis of diarylmethylamine scaffold, via Lewis acidcatalyzed Friedel–Crafts reaction of donor–acceptor aziridines with N,N-dialkylanilines to afford a biologically important diarylmethylamine derivatives in high yields (up to 88%), is presented. This reaction is suitable for the synthesis of various diarylmethylamine derivatives and has a broad scope for electron-rich
Lewis acid-catalyzed Friedel-Crafts/Michael cascade reaction of N,N-dialkyl-3-vinylanilines with N-tosylaziridines for the stereoselective synthesis of highly functionalized tetrahydroisoquinolines
作者:Sang Gyu Lee、Seunghui Sin、Seungyeon Kim、Sung-Gon Kim
DOI:10.1016/j.tetlet.2018.03.004
日期:2018.4
A Lewisacid-catalyzed Friedel-Crafts/Michael cascade reaction between N-dialkyl-3-vinylanilines and N-tosylaziridines has been developed for the stereoselective synthesis of tetrahydroisoquinolines (THIQs). The reaction using Gd(OTf)3 as the Lewis acid catalyst was tolerant to the various N-dialkyl-3-vinylaniline and N-tosylaziridine substrates and provided access to 28 new, highly functionalized THIQs
Enantioselective Catalytic [3 + 3] Cycloaddition of Donor–Acceptor Aziridines with
<i>m‐N,N</i>
‐Dialkylaminophenyl Methylidenemalonates
作者:Sung‐Gon Kim
DOI:10.1002/bkcs.11758
日期:2019.7
Copper(I)‐catalyzed cyclization reactions of ethyl (E)‐α‐ethynyl‐β‐aryl‐α,β‐unsaturated esters with N‐sulfonyl azides for the synthesis of 1‐aminonaphthalenes, 3‐aminobenzofurans, and 3‐aminothiobenzofurans.