Preparation of diphenyl ether

Details Preparation of diphenyl ether Preparation of diphenyl ether

C - Chemistry, Metallurgy

07

C

C07C 201/12 (2006.01) C07C 45/72 (2006.01) C07C 51/367 (2006.01) C07C 205/38 (2006.01) C07C 205/44 (2006.01) C07C 205/45 (2006.01) C07C 205/59 (2006.01) C07C 217/90 (2006.01) C07C 253/30 (2006.01) C07C 255/54 (2006.01) C07D 307/89 (2006.01) C08G 73/10 (2006.01)

Patent

CA 2054227

CASE 6197 PREPARATION OF DIPHENYL ETHER ABSTRACT A process for the production of diaryl ethers which comprises heating a compound of the formula Image wherein X and Y may be selected from the group consisting of H, CN, CO2H, CO2R, CHO, COR, NO2, NR3+, CF3, provided that both X and Y may not simultaneously be H, in a solvent, in the presence of an inorganic base selected from the group consisting of the alkali metal carbonates and bicarbonates, and in the presence of a catalyst selected from the group consisting of benzoic acid, substituted benzoic acids, C2 - C14 aliphatic carboxylic acids, and alkali metal salts of said acids. A novel dinitrodiphenyl ether, a novel diaminodiphenyl ether, and polyimide resins are also disclosed. 12/20/90

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