Preparation of 3,3-bis-(4-dimethylaminophenyl)-6-dimethylaminoph

Details Preparation of 3,3-bis-(4-dimethylaminophenyl)-6-dimethylaminoph Preparation of 3,3-bis-(4-dimethylaminophenyl)-6-dimethylaminoph

1979-08-08

1980-11-11

Jiles, Henry R.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07D30788

Patent

active

042332230

ABSTRACT:
Crystal violet lactone is prepared by oxidizing 2-(4,4'-bis-dimethylaminobenzhydryl)-5-dimethylaminobenzoic acid in aqueous alkaline solution by means of a water-soluble ferricyanide salt or in the presence of a ferricyanide.
A very pure crystal violet lactone is obtained in high yield.

REFERENCES:
patent: 2742483 (1956-04-01), Crounse et al.
patent: 3185709 (1965-05-01), Munro et al.
patent: 3642514 (1972-02-01), Orita et al.
patent: 3845077 (1974-10-01), Hughes
patent: 3987062 (1976-10-01), Okada et al.
patent: 4052415 (1977-10-01), Mayer
patent: 4076728 (1978-02-01), Maulding
Perrine, Jour. of Org. Chem. vol. 16, pp. 1303, 1951.
Aida, Chem. Abst. 84:46059P 1976.

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