Method for preparing of .beta.-anilino-.beta.-hydrazinoacrylates

Details Method for preparing of .beta.-anilino-.beta.-hydrazinoacrylates Method for preparing of .beta.-anilino-.beta.-hydrazinoacrylates

1974-12-13

1976-01-20

Douglas, Winston A.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260470, 260471A, C09F 700, C07C14940, C07C 7946

Patent

active

039338746

ABSTRACT:
A method for the preparation of a .beta.-anilino-.beta.-hydrazinoacrylate which comprises reacting a .beta.-anilino-.beta.-alkoxyacrylate with a hydrazine. .beta.-Anilino-.beta.-hydrazinoacrylates are valuable intermediates in preparing 3-anilino-5-pyrazolone magenta color-forming couplers and the method of the present invention can be applied particularly to the preparation of 3-anilino-5-pyrazolones which have a hydrophobic group on the anilino group.

REFERENCES:
patent: 2680731 (1954-06-01), Martin
patent: 3406165 (1968-10-01), Kruckenberg
patent: 3660438 (1972-05-01), Dexter
patent: 3835164 (1974-09-01), Widdig et al.

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