Synthesis of the 2-alkynyl benzo[b]furanes/benzo[b]thiophenes from the cross-coupling reaction of benzo[b]furanyl/ benzo[b]thiophene aluminum reagents with gem-dibromoolefin derivatives catalyzed by palladium. - Pu, Jia-Xia; Hou, Jin-Song; Han, Li-Rong; Jia, Xiao-Ying; Li, Qing-Han (Tetrahedron, 2024)