Azides. Part VIII. Thermolysis of ethyl azidoformate in acetic and propionic anhydrides: facilitation of intramolecular cyclization of the resultant carbethoxynitrene to 2-oxazolidinone
The thermolysis of ethyl azidoformate in acetic and propionic anhydrides as solvent yielded the corresponding N-acyl-2-oxazolidinones (2a,b) in relatively significant yields.The other major products isolated were N-carboxyethyl-N,O-diacyl hydroxylamine (1a.b) and N,N,O-triacetyl hydroxylamine (3).The intramolecular cyclization is facilitated by the solvent.
Ayyangar, N. R.,Brahme, K. C.,Srinivasan, K. V.
p. 1463 - 1468
(2007/10/02)
ADDITION REACTIONS OF ETHOXYCARBONYLNITRENE AND ETHOXYCARBONYLNITRENIUM ION TO ALLYLIC ETHERS
Ethoxycarbonylnitrene (EtOCON) generated by α-elimination adds cleanly to allylic ethers giving substituted aziridines.Similar addition via nitrenium ion (EtOCONH+) gives derivatives of β-amino alcohols.
Loreto, M. Antonietta,Pellacani, Lucio,Tardella, Paolo A.,Toniato, Elena
p. 4271 - 4274
(2007/10/02)
Acylation of cystosine by ethyl N-hydroxycarbamate and its acyl derivatives and the binding of these agents to nucleic acids and proteins.
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Nery
p. 1860 - 1865
(2007/10/05)
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