1H-1,2,4-triazole-5-yl-acetic ester compound

Details 1H-1,2,4-triazole-5-yl-acetic ester compound 1H-1,2,4-triazole-5-yl-acetic ester compound

2005-01-18

2005-01-18

Morris, Patricia L. (Department: 1625)

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C548S269400

Reexamination Certificate

active

06844444

ABSTRACT:
There is disclosed a 1H-pyrrole-[1,2-b][1,2,4]triazole compound represented by formula (I):wherein R is an alkyl group; R1, R2, R3, R1′, R2′, and R3′ each are a hydrogen atom or an alkyl group; R1and R2, and R1′ and R2′ may bond together to form a ring, respectively; R4is a hydrogen atom or an alkyl group, and X is heterocyclic group, a substituted amino group, or an aryl group. The compound is useful as a photographic cyan coupler. There is also disclosed synthetic intermediates of the compound and a production method of the intermediates.

REFERENCES:
patent: 5756274 (1998-05-01), Matsuda et al.
patent: 714892 (1996-06-01), None
Shimada et al, “Silver Halide Color, etc” CA 127:197689 (1997).*
Makuta, T., Chemical Abstracts, vol. 127, No. 72946 (1997).
Shimada, Y. et al., Chemical Abstracts, vol. 127, No. 197689 (1997).

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