Zinc(II)-Catalyzed Synthesis of Propargylamines by Coupling Aldimines and Ketimines with Alkynes
作者:Syeda Aaliya Shehzadi、Aamer Saeed、Filip Lemière、Bert U. W. Maes、Kourosch Abbaspour Tehrani
DOI:10.1002/ejoc.201701567
日期:2018.1.10
Imines derived from unactivated aldehydes or ketones and primary amines or α‐amino acid esters have been shown to undergo a ZnII‐catalyzed reaction with a variety of terminal alkynes to give secondary propargylamines that have tri‐ and tetrasubstituted α‐carbon atoms (from aldimines and ketimines, respectively).
Synthesis of highly functionalized 1,6-dihydropyridines <i>via</i> the Zn(OTf)<sub>2</sub>-catalyzed three-component cascade reaction of aldimines and two alkynes (IA<sup>2</sup>-coupling)
作者:Syeda Aaliya Shehzadi、Christophe M. L. Vande Velde、Aamer Saeed、Kourosch Abbaspour Tehrani
DOI:10.1039/c8ob00195b
日期:——
three component synthesis of 1,6-dihydropyridines, involving aldimines, alkynes and electron-deficient dimethyl acetylenedicarboxylate (DMAD), in good to excellent yields has been described. Besides a range of different N-substituents, a variety of both aromatic and aliphatic alkynes could be used. The application of electron-deficient propiolates instead of DMAD resulted in regiospecific incorporation