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.

The scalable title reaction tolerates variously functionalized 2H-[1,2′-bipyridin]-2-ones as well as aryl and hetaryl substituted propargyl alcohols, but no alkyl substituted derivatives of the latter. [ABSTRACT FROM AUTHOR]