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Über die Bildung von Dihydro-1,2-oxazin-N-oxiden durch intramolekulare Addition eines Nitronat-Anions an eine Carbonylgruppe

✍ Scribed by Frank Kienzle; Jean-Yves Fellmann; Josef Stadlwieser


Publisher
John Wiley and Sons
Year
1984
Tongue
German
Weight
402 KB
Volume
67
Category
Article
ISSN
0018-019X

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✦ Synopsis


The Formation of Dihydro‐1,2‐oxazine N‐Oxides through an Intramolecular Addition of a Nitronate Anion to a Carbonyl Group

Highly substituted 4‐keto‐1‐nitroalkanes cyclize under basic conditions to dihydro‐1,2‐oxazine N‐oxides. These N‐oxides are thermally unstable and decompose to 1,4‐diketones, BF~3~ catalyzes a similar decomposition, but probably via a different mechanism.