Color-forming coupler and a silver halide color photographic mat

Details Color-forming coupler and a silver halide color photographic mat Color-forming coupler and a silver halide color photographic mat

1991-11-25

1993-07-13

Wright, Lee C.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Identified radiation sensitive composition with color...

430384, 430385, G03C 738

Patent

active

052272877

ABSTRACT:
There is disclosed a cyan dye-forming coupler represented by formula (I) and a silver halide color photographic material containing same. ##STR1## wherein EWG represents an electron-attractive group having a Hammett substituent constant .sigma..sub.p value of 0.30 or more, R.sub.1 and R.sub.2 each represent a substituent, l represents an integer of 0 or 1, X represents a hydrogen atom or a group capable of being released upon coupling reaction with the oxidized product of an aromatic primary amine derivative, and Y represents a hydroxyl group or a sulfonamido group.

REFERENCES:
patent: 2186685 (1940-01-01), Schneider et al.
patent: 2396396 (1946-03-01), Stammers
patent: 5104783 (1992-04-01), Shimada et al.
J. F. Blount et al, "Synthesis of Some 2-Aminofurans from Cyanoacetone Enolate and Their Rearrangement to 3-Cyanopyrroles with Ammonia", J. Org. Chem., vol. 43, No. 20, 1978, American Chemical Society, pp. 3821 to 3824.

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