| 摘要 |
PURPOSE:To obtain the titled compound from inexpensive raw materials, readily, by reacting an iodated (or brominated) diphenyl ether with carbon monoxide in the presence of both a basic substance and a catalyst containing a transition metallic compound in a solvent containing a specific amount of water. CONSTITUTION:An iodated diphenyl ether such as 4-iododiphenyl ether, 4,4'- diiododiphenyl ether, etc., or a brominated diphenyl ether such as 4- bromodiphenyl ether, 4,4'-dibromodiphenyl ether, etc., is reacted with carbon monoxide in the presence of both a basic substance and a catalyst containing a transition metal compound, preferably Pd, Ni, Co or Fe compound in water alone or a solvent system containing water in an amount to give >= equivalent based on the halogen in the raw material to give the titled compound useful a raw material for fibers and resins having improved heat resistance and strength from readily obtainable inexpensive raw materials by a simple process directly. |
