Method for synthesizing 2,2-bis(4-fluorophenyl)-hexafluoropropan

Details Method for synthesizing 2,2-bis(4-fluorophenyl)-hexafluoropropan Method for synthesizing 2,2-bis(4-fluorophenyl)-hexafluoropropan

1988-07-18

1989-05-02

Evans, J. E.

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

Organic compounds

Halogen containing

528219, C07C 1722, C07C 2118

Patent

active

048270547

ABSTRACT:
Novel processes are provided for synthesizing 2,2-bis(4-fluorophenyl)hexafluoropropane and the use of this synthesized monomer in polymerization reactions to form poly(arylethers) and poly(arylthioethers). Synthesis of 2,2-bis(4-fluorophenyl)hexafluoropropane involves converting the commonly available compound Bisphenol AF to an amino-substituted form, followed by treatment with borofluoric acid and a nitrite, and then an aromatic solvent to obtain the monomer. The monomer can be mixed with either a dihydroxy diphenyl hexafluoropropane or a dimercapto diphenyl hexafluorpropane to cause a nucleophilic substitution reaction, thereby yielding the desired poly(arylether) or poly(arylthioether).

REFERENCES:
patent: 2606183 (1952-08-01), Head et al.
patent: 2705730 (1955-04-01), Head
patent: 3950444 (1978-07-01), Gay
patent: 4096196 (1978-06-01), Boudakian
patent: 4503254 (1985-03-01), Kelleghan

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