Methods of producing 1H-pyraolo(5,1-c)-1,2,4-triazoles and pyraz

Details Methods of producing 1H-pyraolo(5,1-c)-1,2,4-triazoles and pyraz Methods of producing 1H-pyraolo(5,1-c)-1,2,4-triazoles and pyraz

1989-10-19

1992-05-05

Morris, Patricia L.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

534752, 544296, 544333, 546256, 546271, 548250, 548251, 548252, 548253, 548254, 548156, 548157, 548159, C07D48704, C07D41714, C07D41704, C07D40914

Patent

active

051109417

ABSTRACT:
A method of producing 1H-pyrazolo[5,1-c]-1,2,4-triazoles represented by general formula (II): ##STR1## (wherein R.sub.1, R.sub.2 and R.sub.3 each represents a hydrogen atom or a substituent group) which comprises making a compound represented by general formula (I) undergo a ring closure reaction: ##STR2## (wherein R.sub.1, R.sub.2 and R.sub.3 each represents a hydrogen atom, or a substituent group), and a method of producing a pyrazol derivative represented by general formula (I) by reacting a compound represented by general formula (III) and general formula (IV): ##STR3## wherein R.sub.1, R.sub.2 and R.sub.3 have the same meaning as in general formula (I); Y represents an acid radical; and n represents 0 to 1.

REFERENCES:
patent: 3725067 (1973-04-01), Bailey et al.
patent: 4705863 (1987-11-01), Sato et al.

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