- Preparation method of 4, 4'-dinitro-2, 2'-bis(trifluoromethyl)diphenyl ether
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The invention discloses a preparation method of 4, 4'-dinitro-2, 2'-bis(trifluoromethyl)diphenyl ether. The method comprises the following steps: adding 2-chloro-5-nitrobenzotrifluoride into a solvent, then raising the temperature, adding sodium methoxide
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Paragraph 0020-0041
(2020/11/02)
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- Method for ether formation
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A process for the preparation of 4,4'-dinitro-2,2'-di(trifluoromethyl)diphenyl ether according to the equation STR1 where X is F, Cl, Br or I, where the inorganic base is selected from the group consisting of alkali metal hydroxides, alkali metal carbonat
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- Fluorinated N,N-bis-imides
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This invention relates to novel fluorinated N,N-bis-imides of the formula STR1 wherein R is a bivalent radical of the formula STR2 The compounds are particularly useful as monomers in the preparation of high performance polymer.
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