MANUFACTURE OF 4,4'-DIAMINOBENZOPHENONE

MANUFACTURE OF 4,4'-DIAMINOBENZOPHENONE

4,4'-diaminobenzophenones of the formula I where the rings A and B can be further substituted, are prepared by a process in which a compound of the formula II where the rings A, B and E can be substituted, is oxidized with aqueous nitric acid in the presence of nitrobenzene or of an alkanoic ac...

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Hauptverfasser: UORUFUGANGU AISUFUERUTO, RORUFUUDEIITAA KOORAA, WARUTAA DEISUTERUDORUFU
Format: Patent
Sprache:eng
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ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
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creator UORUFUGANGU AISUFUERUTO
RORUFUUDEIITAA KOORAA
WARUTAA DEISUTERUDORUFU
description 4,4'-diaminobenzophenones of the formula I where the rings A and B can be further substituted, are prepared by a process in which a compound of the formula II where the rings A, B and E can be substituted, is oxidized with aqueous nitric acid in the presence of nitrobenzene or of an alkanoic acid and under superatmospheric pressure, and the reaction product is cleaved. The process according to the invention gives the compounds of the formula I in high yield and purity.
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subjects ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
title MANUFACTURE OF 4,4'-DIAMINOBENZOPHENONE
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