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
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)
作者:Xueming Chen、Xiaoguang Huang、Yunyun Chen、Feng He、Xingshu Li
DOI:10.2174/157017809787893082
日期:2009.4.1
N-substituted 1,4-dihydropyridines bearing a carboxyl group at the 4-position were synthesized in solvent-free conditions with Cu2+ as the catalyst, imine and β-ketoester as starting materials. The possible mechanism which consists of addition-rearrangement process was proposed and examined by the reaction of isolated product of first addition to β- ketoester.