Highly functionalized furans play a significant role in
organic chemistry, since they, as fundamental heterocyclic
motifs, are widely found in biologically active natural
products, pharmaceuticals, and materials.1 Moreover, they have
also frequently been used as basic building blocks in synthetic
chemistry.2 Thus, substantial interest has been attracted toward
the development of efficient methods to prepare multiply
substituted furans.3 Traditional approaches for the synthesis of
furans include Feist−Benary cyclocondensation ́ 4 from 1,3-
dicarbonyl compounds and haloketones (Scheme 1a),