Synthesis of New 1, 4-Dihydropyridines by Addition-Rearrangement Process with Imine Derivatives and β-Ketoester as Starting Materials in Solvent-Free Conditions (SUPPORTING INFORMATION)
Copper-Catalyzed Aerobic Cascade Oxidative Coupling/Cyclization for the Construction of 1,4-Dihydropyridine Derivatives
作者:Zhi-Qiang Zhu、Zong-Bo Xie、Zhang-Gao Le
DOI:10.1021/acs.joc.6b01736
日期:2016.10.7
An efficient copper-catalyzedcascade cyclization reaction for the preparation of polysubstituted 1,4-dihydropyridines between N-arylglycine esters and 1,3-dicarbonyl compounds using molecular oxygen as the terminal oxidant has been described. Various N-arylglycine esters 1 and 1,3-dicarbonyl compounds 2 were able to undergo the cascadereaction smoothly to afford the desired products 3 in satisfactory
Cascade cyclization of glycine derivatives with β-ketoesters for polysubstituted 1,4-dihydropyridines by visible light photoredox catalysis
作者:Xiao Zhu、Zhi-Qiang Zhu、Dong Guo、Shan Liu、Jiu-Jian Ji、Juan Tang、En Yuan、Zong-Bo Xie、Zhang-Gao Le
DOI:10.1016/j.tet.2020.131353
日期:2020.8
Visiblelight photocatalytic cascade cyclization reaction between glycine derivatives and β-ketoesters using Ir (ppy)3 as a catalyst and dicumyl peroxide (DCP) as an oxidant was described. A series of N-aryl glycine esters proceeded the cyclization smoothly with β-ketoesters at room temperature, affording the desired 1,4-dihydropyridines (1,4-DHPs) in satisfactory yields. A possible mechanism for the
Multicomponent reactions leading to symmetric and asymmetric multi-substituted 1,4-dihydropyridines on montmorillonite
作者:Yu-peng Liu、Jin-ming Liu、Xin Wang、Tie-ming Cheng、Run-tao Li
DOI:10.1016/j.tet.2013.04.006
日期:2013.6
Highly functionalized multi-substituted symmetric and asymmetric 1,4-dihydropyridines were concisely synthesized in moderate to good yields via one-pot multicomponent reactions (MCRs) of beta-dicarbonyl compounds, aldehydes and amines at room temperature on montmorillonite. The merits of this method include the environmentally friendly reaction conditions, simple operation, broad substrate, satisfied yields and the reuse of the montmorillonite. (C) 2013 Elsevier Ltd. All rights reserved.