A Mesomeric Betain Pyrazolo-Oxydotriazinium Ring System. 6-Alkyl-2-methylpyrazolo[1,5-d][1,2,4]triazin-6-ium-4-olates, Synthesis and Ring Cleavege

Pyrazolo[1,5‐d][1,2,4]triazines were synthesized from pyrazolecarboxylic acid hydrazides and carbonyl compounds. Pyrazolecarboxylic acid N‐phenylhydrazide (1c) and formaldehyde gave not only the expected 4hn but 5, respectively. The methyl substituted hydrazides with acetone afforded hydrazones, pyrazolotriazines or 13 depending on the position of the substituents. The reduction of both products yielded pyrazolecarboxylic acid hydrazides.

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Ring cleavage reactions in the series of azoloazines with a bridging nitrogen atom (review)

Maiboroda¹,

Бабаев²

1995

Chem Heterocycl Compd

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A Mesomeric Betain Pyrazolo-Oxydotriazinium Ring System. 6-Alkyl-2-methylpyrazolo[1,5-d][1,2,4]triazin-6-ium-4-olates, Synthesis and Ring Cleavege

Cited by 9 publications

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ChemInform Abstract: A MESOMERIC BETAIN PYRAZOLO‐OXYDOTRIAZINIUM RING SYSTEM. 6‐ALKYL‐2‐METHYL‐PYRAZOLO(1,5‐D)(1,2,4)TRIAZIN‐6‐IUM‐4‐OLATES, SYNTHESIS AND RING CLEAVAGE

ChemInform Abstract: A MESOMERIC BETAIN PYRAZOLO‐OXYDOTRIAZINIUM RING SYSTEM. 6‐ALKYL‐2‐METHYL‐PYRAZOLO(1,5‐D)(1,2,4)TRIAZIN‐6‐IUM‐4‐OLATES, SYNTHESIS AND RING CLEAVAGE

A new synthesis of pyrazolo[1,5‐d][1,2,4]triazines from pyrazolecarboxylic acid hydrazides and carbonyl compounds. I

Ring cleavage reactions in the series of azoloazines with a bridging nitrogen atom (review)

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