Process for preparation of 2-equivalent 4-arylthio-5-pyrazolone

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

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540579, C07D23152

Patent

active

056462972

ABSTRACT:
A process for preparation of 2-equivalent 4-arylthio-5-pyrazolone magenta couplers comprises the steps of:

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