ChemInform Abstract: Rhodium‐Catalyzed/Copper‐Mediated Tandem C(sp2)—H Alkynylation and Annulation: Synthesis of 11‐Acylated Imidazo[1, 2‐a:3, 4‐a′]dipyridin‐5‐ium‐4‐olates from 2H‐[1, 2′‐Bipyridin]‐2‐ones and Propargyl Alcohols. Issue 29 (June 2016)