PURPOSE: To obtain the subject compound useful for raw material of aromatic polyetherketon having excellent heat resistance, etc., with a simple and efficient process by using xylylene dihalide of a low cost as raw material, reacting with monohalogenobenzene and oxidizing with molecular O2.
CONSTITUTION: Xylylene dihalide expressed by formula I (X1 and X2 are halogen) such as p-xylylene dichloride is reacted with monohalogenobenzene such as chlorobenzene at 0-200°C and in the presence of Friedel-Crafts catalyst such as AlCl3 to produce aromatic dihalide expressed by formula II and oxidized by molecular O2 in the presence of oxidizing catalyst of active cobalt oxide such as cobalt (II) sulfate, etc., occasionally in a solvent such as benzene at 10-350°C for 1 min - 50 hour under normal pressure or under pressure to afford the aimed compound expressed by formula III such as 4,4'- dichloroterephthalophenone useful for raw material of aromatic polyether ketone having excellent chemical resistance and mechanical properties, etc.
TANABE TSUNEAKI
FUKUOKA SHINSUKE
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