Process for preparation of 1H-pyrazolo [1,5-b][1,2,4]triazole co

Details Process for preparation of 1H-pyrazolo [1,5-b][1,2,4]triazole co Process for preparation of 1H-pyrazolo [1,5-b][1,2,4]triazole co

1992-02-26

1993-11-16

Higel, Floyd D.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

5483291, C07P48704, G03C 738, G03C 7407

Patent

active

052625427

ABSTRACT:
A process of preparing 1H-pyrazolo [1,5-b][1,2,4] triazole compounds represented by formula (I): ##STR1## wherein R and R' independently represent H or a substituent, and X represents a coupling-off substituent, comprises subjecting an amidoxime of formula (II) ##STR2## to a cyclization reaction to obtain the compound of formula (I).

REFERENCES:
patent: 4540654 (1985-09-01), Sato et al.
patent: 4621046 (1986-11-01), Sato et al.
patent: 4705863 (1987-11-01), Sato et al.
patent: 4921968 (1990-05-01), Yokoyama et al.

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