| abstract |
(57) Abstract: [PROBLEMS] To provide a method for cross-linking an aromatic boron compound with an aromatic halogen compound or a perfluoroalkyl sulfonate, which eliminates the disadvantages of the prior art. A method for producing a polycyclic aromatic compound by cross-linking an aromatic boron compound with an aromatic halogen compound or a perfluoroalkyl sulfonate in the presence of metallic palladium as a catalyst, comprising the steps of: Said process comprising adding at least one water-soluble complexing ligand and b) sufficient water to form an aqueous phase to the reaction mixture. The reaction of the present invention proceeds chemoselectively, and even an electrophilic group such as ester or nitrile does not adversely affect the reaction progress. The use of the water-soluble complexing ligands according to the invention in the aqueous phase allows polycyclic aromatic compounds to be obtained in very high yields at the same time with very high purity, and in particular without contamination with complexing ligands. It becomes possible to manufacture. |