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Syntheses of cyanoselenoamides and diselenoamides: Conversion into selenazoles and selenazines

✍ Scribed by Mamoru Koketsu; Yuichi Takenaka; Hideharu Ishihara


Book ID
102231721
Publisher
John Wiley and Sons
Year
2003
Tongue
English
Weight
100 KB
Volume
14
Category
Article
ISSN
1042-7163

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✦ Synopsis


Abstract

Reactions of dicyano compounds with a potassium selenocarboxylate afforded the corresponding cyanoselenoamides and diselenoamides in good yields of experimentally determined ratios. The obtained cyanoselenoamides were allowed to react with potassium selenocarboxylate, again to afford the corresponding diselenoamides in higher yields. The cyanoselenoamides and diselenoamides were investigated as substrates for preparations of selenazoles and selenazines. Β© 2003 Wiley Periodicals, Inc. Heteroatom Chem 14:106–110, 2003; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/hc.10111


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✍ Saı̈d Boukhris; Abdelaziz Souizi πŸ“‚ Article πŸ“… 2000 πŸ› Elsevier Science 🌐 French βš– 168 KB

The nucleophilic ring opening of gem-dicyanoepoxides by LiBr or Li 2 NiBr 4 , in the presence of hydroxylamine derivatives leads to new Ξ±-halo hydroxamic acids. These compounds has been used in the synthesis of Ξ±functionalized hydroxamic acids, Ξ±-hydroxy and Ξ±-amino acids in good yields.