Process for producing 5-amino-4-halogeno-1H-pyrazole compounds

Details Process for producing 5-amino-4-halogeno-1H-pyrazole compounds Process for producing 5-amino-4-halogeno-1H-pyrazole compounds

1991-06-28

1992-06-16

Ramsuer, Robert W.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D23138

Patent

active

051226120

ABSTRACT:
There is disclosed a process for producing 5-amino-4-halogeno-1H-pyrazole compounds comprising reacting a compound represented by the following formula (I) with a halogenating agent to obtain a compound represented by the following formula (II): ##STR1## wherein R represents a hydrogen atom, an alkyl group, or an aryl group, m is 0 or an integer, and Y represents an organic or inorganic acid radical, ##STR2## wherein R has the same meaning as defined above in formula (I), X represents a halogen atom, n is 0 or an integer, and Z represents an organic or inorganic acid radical.

REFERENCES:
patent: 4812576 (1989-03-01), Wolff et al.
Chemical Abstracts, Fuji Photo Film Co. et al, "5-Amino-4-chloro-3-methyl-1H-pyrazole hydrochloride", May 15, 1989, vol. 110, No. 20, p. 102, column 2.
Chemical Abstracts, Konishiroku Photo Industry Co. et al, "Preparation of 5-amino-1H-pyraxoles as intermediates for 1H-pyrazolo (3,2-c)-s-triazole couplers for photography", Dec. 19, 1988, vol. 109, No. 25, p. 861, column 2.
Chemical Abstracts, Konishiroku Photo Industry Co., LDT et al, "Preparation of 5-amino-1H-pyrazoles as intermediates for magenta couplers", Feb. 29, 1988, vol. 108, No. 9, p. 682, col. 2.

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