Document Type and Number:
Japanese Patent JPH042579
Kind Code:
B2
Abstract:
1. Process for manufacturing 2-amylanthraquinone having a high content of the tert-isomer, by reaction of phthalic anhydride with tert-amylbenzene in the presence of a catalyst consisting of a mixture of hydrofluoric acid and boron trifluoride, followed by conversion of the amyl-orthobenzoylbenzoic acid obtained to 2-amylanthraquinone according to processes which are known per se, characterized in that the reaction of phthalic anhydride with tert-amylbenzene is performed at a temperature of between -60 C and -20 C in a two-phase liquid reaction medium formed as a result of the presence of a solvent for tert.amylbenzene which is inert and immiscible with the mixture of hydrofluoric acid and boron trifluoride under the conditions of the reaction.
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Application Number:
JP24304785A
Publication Date:
January 20, 1992
Filing Date:
October 31, 1985
Export Citation:
International Classes:
C07C50/16; B01J27/12; C07C45/00; C07C46/00; C07C50/18; C07C67/00
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