Hydroxy-terminated arylene ethers, and method for making

Details Hydroxy-terminated arylene ethers, and method for making Hydroxy-terminated arylene ethers, and method for making

1988-08-01

1989-10-10

Moyer, Donald B.

Organic compounds -- part of the class 532-570 series

Organic compounds

Sulfur containing

568633, 568637, 568638, C07C 43295

Patent

active

048733717

ABSTRACT:
A method is provided for making certain hydroxy-terminated arylene ethers useful as spacers in liquid crystalline polyesters. There is initially formed a dicarbonyl adduct from a dihydroxyaromatic compound, such as hydroquinone and a haloarylcarbonyl compound. The adduct formed is oxidized to the corresponding diester. Hydrolysis of the diester provides the hydroxy-terminated arylene ether.

REFERENCES:
Russian Chemical Reviews, 43(8), 1974, A. Moroz et al., "The Ullmann Ether Condensation", pp. 679-689.
Organic Reactions, C. Hassall, "The Baeyer-Villiger Oxidation of Aldehydes and Ketones", pp. 73-102.
"The Chemistry of the Diaryl Ethers", H. Ungnade, Chem. Rev., 38 (1946), pp. 405-446.

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