Synthesis of 2-Azaanthracenes via a Sequential Sonogashira Coupling/Alkynyl Imine−Allenyl Imine Isomerization/Aza-Diels−Alder/Elimination−Aromatization Reaction
摘要:
An Interesting sequential Sonogashira coupling/alkynyl imine-allenyl imine isomerization/aza-Diels-Aider/elimination-aromatization reaction, providing a facile synthesis of substituted 2-azaanthracenes from 1,6-dlynes and imidoyl chlorides, is reported. The easy procedure accessing the products efficiently from readily available starting materials may imply a potential synthetic application.