Heterocycles from nitrile oxides. II . 1,2,4-oxadiazin-6-ones |
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Authors: | Ahmad Q. Hussein Mustafa M. El-Abadelah Wail S. Sabri |
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Affiliation: | Department of Chemistry, Faculty of Science, University of Jordan, Amman, Jordan |
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Abstract: | Condensation of arylnitrile oxides with α-amino acid esters, other than those of glycine and analine, has been found to constitute a synthetic route to the hitherto unknown 1,2,4-oxadiazin-6-ones 7. α-Amino alcohols yield with nitrile oxides the corresponding acyclic N-(arylhydroxamoyl)amino alcohols, which are also accessible by borohydride reduction of compounds 7 . In contrast, the adducts formed from nitrile oxides and α-amino acids are unstable; they decompose readily into the aldehyde, derived from the amino acid, together with the aldoxime, derived from the nitrile oxide. Both decomposition products are also formed when compounds 7 are subjected to mild hydrolysis. |
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