Process for preparing distyrylbiphenyl compounds

Details Process for preparing distyrylbiphenyl compounds Process for preparing distyrylbiphenyl compounds

1993-08-30

1994-07-26

Dees:, Jose'

Organic compounds -- part of the class 532-570 series

Organic compounds

Sulfonic acids or salts thereof

C07C24700

Patent

active

053328612

ABSTRACT:
Process for preparing distyrylbiphenyl compounds by condensation of a substituted or unsubstituted 4,4'-bis(dialkoxyphosphonomethyl)biphenyl compound with a substituted or unsubstituted benzaldehyde in liquid ammonia as the solvent and in the presence of strong bases; and the use of these distyrylbiphenyl compounds as fluorescent whitening agents.

REFERENCES:
patent: 3980713 (1976-09-01), Matsunaga et al.
patent: 3984399 (1976-10-01), Weber
patent: 4147648 (1979-04-01), Gunter et al.
patent: 4925595 (1990-05-01), Hefti et al.
patent: 5145991 (1992-09-01), Weber
patent: 5177255 (1993-01-01), Bader et al.

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