Journal
SYNLETT
Volume -, Issue 7, Pages 1118-1122Publisher
GEORG THIEME VERLAG KG
DOI: 10.1055/s-0029-1216630
Keywords
1,2-diaza-1,3-butadienes; Michael additions; selenium; pyrroles; pyrazoles
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Funding
- Ministero dell'Istruzione, dell'Universita e della Ricerca (MIUR)-PRIN
- Universita degli Studi di Urbino 'Carlo Bo'
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An approach to the synthesis of 4-(phenylseleno)pyrroles, 4-(phenylseleno)pyrazol-3-ones, and 4-(1,3-benzoselenazol-2-ylthio)pyrazol-3-ones is described. Their formation passes through hydrazonic intermediates obtained by the reaction between 1,2-diaza-1,3-butadienes and 1-(phenylseleno)ketones, phenylselenol, or 2-mercaptobenzoselenazole, respectively.
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