Symmetric benzophenones substituted by groups containing fluorin

Details Symmetric benzophenones substituted by groups containing fluorin Symmetric benzophenones substituted by groups containing fluorin

1985-03-19

1988-12-20

Chan, Nicky

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

Organic compounds

Oxygen containing

549362, 549435, 568333, C07C 4980

Patent

active

047926350

ABSTRACT:
Symmetric benzophenones substituted by groups containing fluorine are prepared by reacting aromatic compounds substituted by groups containing fluorine with formaldehyde and/or a formaldehyde derivative, with the addition of hydrogen fluoride, fluorosulphonic acid and/or sulphuric acid, to give the corresponding diphenylmethanes and oxidizing these. The symmetric benzophenones substituted by groups containing fluorine are used for the preparation of polyether ketones by reacting them with diols. New symmetric benzophenones substituted by groups containing fluorine are also disclosed.

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