Method for synthesizing a magenta coupler by selectively etherif

Details Method for synthesizing a magenta coupler by selectively etherif Method for synthesizing a magenta coupler by selectively etherif

1983-11-10

1987-09-08

Jiles, Henry R.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

546279, 548162, 548 18D, 548195, 548221, 548251, 548255, 548261, 548263, 548327, 548336, 548364, 548365, C07D23128, C07D40112

Patent

active

046925295

ABSTRACT:
A method for synthesizing a magenta coupler. The synthesis is carried out through (1) 3-pyrazoline-5-ones which are obtained by substituting a blocking group at the nitrogen atom in the second position thereof; or (2) pyrazoles which are obtained by substituting a blocking group at the hydroxyl group bonded in the fifth position thereof. The magenta coupler obtained has the formula ##STR1## wherein R.sub.1 is an aryl or heterocyclic group, R.sub.2 is an acylamide, anilino or ureido group, and R3 is an alkyl, aryl, or heterocyclic group.

REFERENCES:
patent: 3419391 (1968-12-01), Young
Greene, Protective Groups in Organic Synthesis, Wiley, N.Y., 1981, pp. 148-149, 267-269.

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