Cationic 1,3-diazadienes in annulation reactions. Synthesis of pyrimidine,thiadiazinedioxide and triazine derivatives

Authors
Landreau, C Deniaud, D Reliquet, A Reliquet, F Meslin, JC
Citation
C. Landreau et al., Cationic 1,3-diazadienes in annulation reactions. Synthesis of pyrimidine,thiadiazinedioxide and triazine derivatives, J HETERO CH, 38(1), 2001, pp. 93-98
Citations number
21
Categorie Soggetti
Organic Chemistry/Polymer Science
Journal title
JOURNAL OF HETEROCYCLIC CHEMISTRY
ISSN journal
0022152X → ACNP
Volume
38
Issue
1
Year of publication
2001
Pages
93 - 98
Database
ISI
SICI code
0022-152X(200101/02)38:1<93:C1IARS>2.0.ZU;2-O
Abstract
Triazapentadienium iodides 2 prepared from N'-thiocarbamoylformamidines 1 a re efficient intermediates in heterocyclic synthesis. They react with keten es, sulfenes, phenyl isocyanate or isothiocyanate and dimethyl acetylenedic arboxylate affording the corresponding dihydropyrimidinones 3, thiadiazined ioxides 5, triazinones 6, triazinethiones 7 and pyrimidines 9.