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

1993-09-28

Higel, Floyd D.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

5482624, 5483674, C07D48704, C07D33106, G03C 738

Patent

active

052487865

ABSTRACT:
A process of preparing 1H-pyrazolo [1,5-b][1,2,4] triazole compounds represented by formula (I): ##STR1## wherein R and R' are independently hydrogen or a substituent and X is hydrogen or a coupling-off group, comprises subjecting a compound of formula (II) ##STR2## wherein Y and Z are each substituent groups and n is 0, 1 or 2, to a cyclization reaction.

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.

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