3219-56-5Relevant academic research and scientific papers
Process for producing 3,3-bis-(4-dimethylaminophenyl)-6-dimethylaminophthalide
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, (2008/06/13)
3,3-Bis-(4-dimethylaminophenyl)-6-dimethylaminophthalide is produced by oxidizing an alkali metal salt of 2-[4,4'-bis-(dimethylamino)-benzhydryl]-5-dimethylaminobenzoic acid in an aqueous solution of pH of 8 to 14 with hydrogen peroxide, oxygen or air in the presence of a catalyst selected from the group consisting of cobalt compounds and copper compounds.
