Imino derivatives of 4-halogen-pyrazolone-5

Details Imino derivatives of 4-halogen-pyrazolone-5 Imino derivatives of 4-halogen-pyrazolone-5

1987-03-16

1989-03-14

Ramsuer, Robert W.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

548262, C07D23138

Patent

active

048125768

ABSTRACT:
Imino derivatives of 4-halogen-pyrazolone-5 (formula I) are valuable intermediate products for the preparation of 7-halogen-pyrazolo[3,2-c]-s-triazole magenta couplers. ##STR1## In formula I, X denotes chlorine or bromine,

REFERENCES:
patent: 3646059 (1972-02-01), Brantley
patent: 4316039 (1982-02-01), Plath et al.

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