Process for preparing stilbenedicarbonitriles

Details Process for preparing stilbenedicarbonitriles Process for preparing stilbenedicarbonitriles

1984-03-29

1985-05-28

Torrence, Dolph H.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C12164

Patent

active

045199531

ABSTRACT:
A process for preparing stilbenedicarbonitrile by dimerizing o- or p-cyanobenzyl chloride in a polar aprotic solvent in the presence of an excess of alkali metal hydroxide powder. Stilbenedicarbonitriles are precursors for the preparation of fluorescent brighteners of the bisbenzoxazolylstilbene class.

REFERENCES:
patent: 2688631 (1954-09-01), Toland, Jr.

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