Synthesis of polyfunctionalized benzophenones via the reaction of 3-formylchromones with tertiary push–pull enamines
作者:Alexey Yu. Barkov、Vladislav Yu. Korotaev、Igor B. Kutyashev、Vyacheslav Ya. Sosnovskikh
DOI:10.1016/j.tet.2016.03.005
日期:2016.4
Uncatalyzed nucleophilic reaction of 3-formylchromones with tertiary push–pull enamines in refluxing acetonitrile gave polyfunctionalized benzophenone derivatives as a result of a [3+3] annulation in moderate to good yields.