Styryl-pyrazoline compounds

Details Styryl-pyrazoline compounds Styryl-pyrazoline compounds

1974-03-07

1976-12-21

Meyers, Albert T.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

252 86, 252543, 2602396, 26023965, 2602409, 25230122, C07D23142, C07D23300, C07D23500, C07D26116

Patent

active

039988120

ABSTRACT:
1,5-Diaryl-3-styryl pyrazolines, which are obtained by condensation of a distyryl ketone and an aliphatic 4-hydrazino-phenyl sulfone, are useful as optical brighteners, especially in admixture with known 1,3-diaryl pyrazoline brighteners.

REFERENCES:
patent: 2837485 (1958-06-01), Siegrist
patent: 3133080 (1964-05-01), Sarkar et al.
patent: 3255203 (1966-06-01), Shinzel et al.
patent: 3378389 (1968-04-01), Schellhammer et al.
patent: 3498791 (1970-03-01), Rauhut et al.
patent: 3522242 (1970-07-01), Schinzel et al.
patent: 3630895 (1971-12-01), Krause et al.
patent: 3835126 (1974-09-01), Mengler et al.

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