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1,2,3‐Triazolo[4,5‐ d ]‐1,2,4‐triazolo[4,3‐ b ]pyridazines
Author(s) -
Biagi Giuliana,
Giorgi Irene,
Livi Oreste,
Manera Clementina,
Scartoni Valerio
Publication year - 1997
Publication title -
journal of heterocyclic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.321
H-Index - 59
eISSN - 1943-5193
pISSN - 0022-152X
DOI - 10.1002/jhet.5570340111
Subject(s) - chemistry , substituent , ring (chemistry) , nitrogen atom , formic acid , triazole , condensation , d 1 , stereochemistry , medicinal chemistry , organic chemistry , biochemistry , physics , receptor , thermodynamics
Some new 1,2,3‐triazolo[4,5‐ d ]‐1,2,4‐triazolo[4,3‐b]pyridazines were prepared starting from the corresponding 1,2,3‐triazolo[4,5‐ d ]pyridazines via the formation of the 1,2,4‐triazole ring, by condensation of an appropriate monocarbon fragment with the 4‐hydrazino substituent and the nitrogen atom in the 5 position of the heterocycle. Condensation of 4‐phenylhydrazino substituted derivatives with formic acid gave zwitterionic compounds.