Ring closure reactions of 3-arylhydrazonoalkyl-quinolin-2-ones to 1-aryl-pyrazolo[4,3-c]quinolin-2-ones

Autor:	Gerhard Hojas, Wolfgang Stadlbauer
Rok vydání:	2004
Předmět:	chemistry.chemical_compound Differential scanning calorimetry chemistry Computational chemistry Aryl Organic Chemistry Closure (topology) General Medicine Ring (chemistry) Medicinal chemistry
Zdroj:	Journal of Heterocyclic Chemistry. 41:681-690
ISSN:	1943-5193 0022-152X
DOI:	10.1002/jhet.5570410505
Popis:	4-Hydroxy-3-arylhydrazonoalkyl-2-quinolones 6or reactive derivatives such as 3-arylhydrazonoalkyl-4tosyloxy-2-quinolones 7or 4-chloro-3-arylhydrazonoalkyl-2-quinolones 14, which are obtained via3-acyl4-hydroxyquinolones 4,10or 3-phenylaminomethylene-quinoline-2,4-diones 12, cyclize in excellent yields to 1-aryl-pyrazolo[4,3-c]quinolin-4-ones (11). The cyclization conditions were investigated by differential scanning calorimetry (DSC).
Databáze:	OpenAIRE
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