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AssigneeMitsui Toatsu Chemicals, Inc.
InventorsMotohiro Kase, Hitoshi Nakayama, Masaru Wada, Teruyuki Nagata, Akihiro Yamaguchi
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A preparation process of a bis(3-nitrophenoxy) compound represented by the formula: ##STR1## wherein X is a direct bond, divalent hydrocarbon having from 1 to 10 carbon atoms or a divalent group selected from --C(CF.sub.3).sub.2, --CO--, --S--, --SO--, SO.sub.2 --or --O--, which comprises reacting 4,4'-bisphenol with m-dinitrobenzene in the presence of an alkali metal carbonate or alkali metal hydrogen carbonate having a particle size of 250 .mu.m or less while removing generated water from the reaction system during the reaction. In one embodiment of the process, the reaction is carried out while simultaneously adding 4,4'-bisphenol and m-dinitrobenzene to a reaction vessel which was previously charged with the base and an aprotic polar solvent.
A process for the preparation of a compound of the formula (II) ##STR7## wherein X is a direct bond, divalent hydrocarbon having from 1 to 10 carbon atoms or a divalent group selected from --C(CF.sub.3).sub.2 --, --CO--, --S--, --SO.sub.2 -- or --O-- by a condensation reaction of a compound of formula (I) ##STR8## wherein X is defined above with m-dinitrobenzene comprising charging into a reaction vessel an aprotic polar solvent and a base which is an alkali metal carbonate, said base having a particle size that passes through a 60 mesh sieve, the amount of the base being from 1.0 to 1.5 moles per mole of the compound of formula (I), adding the compound of formula (I) an m-dinitrobenzene to the reaction vessel simultaneously with a constant feed ratio of from 2.0 to 2.1 moles of m-dinitrobenzene per mole of the compound of formula (I), and reacting the compound of formula (I) and the m-dinitrobenzene in the reaction vessel while removing water formed during the reaction.
Dependencies are inferred from the claim text.