3-Carbonylated benzofuran (3-CBF) derivatives represent an important class of members in the benzofuran(1) family exhibiting unique biological and pharmacological activities.(2) To date, many approaches have been explored for the construction of benzofuran scaffold with different functional patterns,(3-5) among which, however, those related to the synthesis of 3-CBFs have a lack of development. Representative methods include Pd-catalyzed cascade ...
