A　method　of　Rh-II-catalyzed　C-H　carboxylation　of　2-(imidazo[1,2-a]pyridin-2-yl)phenols　via　CO2　fixation　under　redox-neutral　conditions　was　reported,　providing　an　access　to　a　range　of　coumarin　derivatives.　A　suitable　diphosphine　ligand　was　crucial　for　this　reaction.　This　reaction　could　be　performed　under　relatively　lower　temperature　or　in　a　shorter　time　than　the　alternative　base-promoted　protocol.