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General Synthesis of 1-Aryl-6-azaisocytosines and Their Utilization for the Preparation of Related Condensed 1,2,4-Triazines
F. Zálešák, J. Slouka, J. Stýskala,
Jazyk angličtina Země Švýcarsko
Typ dokumentu časopisecké články
NLK
Directory of Open Access Journals
od 1997
Free Medical Journals
od 1997
PubMed Central
od 2001
Europe PubMed Central
od 2001
ProQuest Central
od 1997-01-01
Open Access Digital Library
od 1997-01-01
Medline Complete (EBSCOhost)
od 2009-03-01
Health & Medicine (ProQuest)
od 1997-01-01
- MeSH
- cyklizace MeSH
- cytosin chemie MeSH
- molekulární struktura MeSH
- pyrimidiny chemická syntéza chemie MeSH
- triaziny chemická syntéza chemie MeSH
- Publikační typ
- časopisecké články MeSH
A simple general synthesis of 1-aryl-6-azaisocytosine-5-carbonitriles 4 is described. This method is based on coupling diazonium salts with cyanoacetylcyanamide 2 and then cyclization of the formed 2-arylhydrazono-2-cyanoacetylcyanamides 3. The 6-azaisocytosines 4 were studied with respect to tautomeric equilibrium and the transformation of functional groups, and used in the synthesis of the condensed heterocyclic compounds: Purine isosteric imidazo[2,1-c]-[1,2,4]triazine 8 and the 1,2,4-triazino[2,3-a]quinazolines 9-12.
Citace poskytuje Crossref.org
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- $a Zálešák, František $u Department of Organic Chemistry, Faculty of Science, Palacký University, 17. listopadu 1192/12, CZ-771 46 Olomouc, Czech Republic. frantisek.zalesak@upol.cz.
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- $a A simple general synthesis of 1-aryl-6-azaisocytosine-5-carbonitriles 4 is described. This method is based on coupling diazonium salts with cyanoacetylcyanamide 2 and then cyclization of the formed 2-arylhydrazono-2-cyanoacetylcyanamides 3. The 6-azaisocytosines 4 were studied with respect to tautomeric equilibrium and the transformation of functional groups, and used in the synthesis of the condensed heterocyclic compounds: Purine isosteric imidazo[2,1-c]-[1,2,4]triazine 8 and the 1,2,4-triazino[2,3-a]quinazolines 9-12.
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