Chemodivergent, One-Pot, Multi-Component Synthesis of Pyrroles and Tetrahydropyridines under Solvent- and Catalyst-Free Conditions Using the Grinding Method
作者:Isaivani Dhinakaran、Vediappen Padmini、Nattamai Bhuvanesh
DOI:10.1021/acscombsci.5b00154
日期:2016.5.9
A highly efficient, chemoselective synthesis of a library of polysubstituted pyrroles and tetrahydropyridines has been achieved through the one-pot, multicomponent reactions of ethyl (E)-3-(aryl/alkyl amino) acrylates, 2,2-dihydroxy-1-arylethan-1-ones, and malononitrile under solvent- and catalyst-free grinding conditions. The selective formation of pyrrole or tetrahydropyridines relied on substitution
通过乙基(E)-3-(芳基/烷基氨基)丙烯酸乙酯,2,2-二羟基-1-芳烃的一锅多组分反应,已实现了多取代吡咯和四氢吡啶库的高效化学选择性合成。在没有溶剂和催化剂的条件下研磨-1-酮和丙二腈。吡咯或四氢吡啶的选择性形成依赖于(E)-3-(4-芳基氨基)丙烯酸乙酯的N-芳基的取代。这些反应大概是通过多米诺Knoevenagel缩合反应和Michael加成反应,然后在单次转化中进行的分子内环化反应而发生的。