Process for producing 3,3-bis-(4-dimethylaminophenyl)-6-dimethyl

Details Process for producing 3,3-bis-(4-dimethylaminophenyl)-6-dimethyl Process for producing 3,3-bis-(4-dimethylaminophenyl)-6-dimethyl

1980-01-29

1981-06-02

Jiles, Henry R.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07D30788

Patent

active

042710758

ABSTRACT:
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.

REFERENCES:
patent: 3987062 (1976-10-01), Okada et al.
patent: 4052415 (1977-10-01), Mayer

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