Process for the preparation of 4,4'-dinitrodibenzyls
AssigneeBayer Aktiengesellschaft
InventorsRichard Kopp, Gerhard Grogler, Klaus Konig, Manfred Schmidt
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Abstract
4,4'-dinitrodibenzyls are prepared by reaction of 4-nitrotoluenes, in the presence of an organic solvent and/or diluent, with an alkali metal-alcoholate and/or an alkaline earth metal alcoholate, and subsequent treatment of the reaction mixture with an aqueous solution of hypohalous acids and/or their salts or with chlorine, bromine or an aqueous solution of hydrogen peroxide and/or its salts, or with organic or inorganic peracids and/or their salts.
Claims17
A process for the preparation of 4,4'-dinitrodibenzyls of the formula ##STR3## in which R.sup.1 represents hydrogen, alkyl, aryl, alkaryl, aralkyl or halogen, comprising reacting a 4-nitrotoluene of the general formula ##STR4## in which R.sup.1 has the abovementioned meaning, in the presence of an organic solvent and/or diluent, with an alkali metal-alcoholate and/or an alkaline earth metal alcoholate, and then treating the resultant reaction mixture with an oxidizing agent selected from the group consisting of an aqueous solution of a hypohalous acid, an aqueous solution of a hypohalous salt, chlorine, bromine, an aqueous solution of hydrogen peroxide, an aqueous solution of a salt of hydrogen peroxide, an inorganic peracid, an organic peracid, a salt of an inorganic peracid and a salt of an organic peracid.
Dependencies are inferred from the claim text.