“…There are quite a few examples of carbonylations of other heteroaryl chlorides, for example, chloropyrazines,208b, 209 pyrimidines,210 quinolines,18a, 208f chlorothiophenes,208c naphthyridines,211 and phenanthrolines 211. A thorough study by Beller et al revealed that bidentate phosphanes, including dppf, are very effective for palladium‐catalyzed alkoxycarbonylations of 2‐chloropyridines, 2‐ and 4‐chloroquinolines, pyrazines, pyrimidines, and pyridazines; a turnover number of 13 000 was achieved for a carbonylation of 2‐chloropyridine using dppb as the ligand 212.…”