Regioselective Metal-Free One-Pot Synthesis of Functionalized 2-Aminothiophene Derivatives
作者:Xiaoyan Luo、Li-Shi Ge、Xing-Lan An、Jing-Hai Jin、Yu Wang、Pei-Pei Sun、Wei-Ping Deng
DOI:10.1021/acs.joc.5b00488
日期:2015.5.1
A facile metal-free synthesis of 2-aminothiophene derivatives by the reaction of 2-ynals with thioamides in alcohols has been developed. This transformation allows the assembly of 2-aminothienyl ether derivatives via a well-designed aldol condensation/regioselective intramolecular cyclization/conjugateaddition cascade reaction and provides a straightforward synthetic protocol for constructing 2,3
Direct synthesis of polysubstituted 2-aminothiophenes by Cu(<scp>ii</scp>)-catalyzed addition/oxidative cyclization of alkynoates with thioamides
作者:Li-Shi Ge、Zheng-Lin Wang、Xing-Lan An、Xiaoyan Luo、Wei-Ping Deng
DOI:10.1039/c4ob01534g
日期:——
A facile and direct synthetic method was developed for the construction of structurally important 2-aminothiophenes in moderate to excellent yields (up to 91%), via Cu(II)-catalyzed addition/oxidative cyclization of readily available thioamides with alkynoates under an air atmosphere.
Cu(II)-catalyzed one-pot synthesis of fully substituted dihydrothiophenes and thiophenes from thioamides and enynones
作者:Min Wen、Pei-Pei Sun、Xiaoyan Luo、Wei-Ping Deng
DOI:10.1016/j.tet.2018.02.035
日期:2018.8
developed for the construction of fully substituted dihydrothiophenes, which via a copper-catalyzed Michael addition/intramolecular cyclization/protonation cascadereaction of readily available thioamides with enynones under air atmosphere. This approach provides 2,3-dihydrothiophenes with up to 92% yield in a one-pot process. In addition, several fully substituted thiophenes could also be synthesized