Method of manufacturing a 3-substituted-3-oxo-2-halopropionic ac

Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...

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5483121, C07D23340

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active

056727143

ABSTRACT:
There is disclosed a method of manufacturing a 3-substituted-3-oxo-2-halopropionic acid amide compound, comprising halogenating a 3-substituted-3-oxopropionic acid amide compound with a 1,3-dihalo-5,5-dimethylhydantoin. There is also disclosed a method of manufacturing a 3-substituted-3-oxo-2-(5,5-dimethylhydantoin-3-yl)propionic acid amide compound, comprising steps of halogenating a 3-substituted-3-oxopropionic acid amide compound with a 1,3-dihalo-5,5-dimethylhydantoin, to obtain a corresponding 3-substituted-3-oxo-2-halopropionic acid amid compound, and reacting the resultant amide compound with 5,5-dimethylhydantoin in the presence of a base. This 3-substituted-3-oxo-2-hydantoinylpropionic acid amide compound is useful as a photographic yellow coupler for a color-photographic light-sensitive material.

REFERENCES:
patent: 3960570 (1976-06-01), Oishi et al.
patent: 5066574 (1991-11-01), Kubota et al.
patent: 5183731 (1993-02-01), Takahashi et al.
patent: 5399474 (1995-03-01), Tomotake et al.

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