One-Pot Three-Component Synthesis of Enamine-Functionalized 1,2,3-Triazoles via Cu-Catalytic Azide–Alkyne Click (CuAAC) and Cu-Catalyzed Vinyl Nitrene Transfer Sequence
作者:Wei Zhou、Min Zhang、Hanhui Li、Wanzhi Chen
DOI:10.1021/acs.orglett.6b02850
日期:2017.1.6
derivatives have been prepared via the Cu-catalyzed three-component reaction of terminal alkyne, azide, and 2H-azirine. The reaction proceeds through insertion of vinyl nitrene into the C–Cu bond of the triazolyl-Cu species, providing an efficient and step- and atom-economic approach to the enamine-bearing polysubstituted 1,2,3-triazoles. The resulting triazoles were easily transformed to trisubstituted
通过末端炔烃,叠氮化物和2 H-叠氮基的Cu催化三组分反应,已经制备了许多烯胺官能化的1,2,3-三唑衍生物。该反应通过将乙烯基腈插入三唑基-Cu物种的C-Cu键中而进行,从而为含烯胺的多取代1,2,3-三唑提供了有效且分步和原子经济的方法。在Rh催化剂的存在下,容易将所得的三唑转化为三取代的吡唑。