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Structure of norbornene-fused 3,1-oxazine double cycloadducts

✍ Scribed by Pál Sohár; Gábor Bernáth; Géza Stájer; Angela E. Szabo

Book ID
102526521
Publisher
John Wiley and Sons
Year
1989
Tongue
English
Weight
477 KB
Volume
27
Category
Article
ISSN
0749-1581

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✦ Synopsis

Pentacyclic isoxazolines were obtained by the cycloaddition of benzonitrile oxide to norbornene-azetidinone-fused 3,1-oxazines. The constitutions of two of the isomers obtained, and the configurations and conformations of all products, were determined by means of H and C NMR spectroscopy and DNOE experiments.

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Stereostructure of cycloadducts of norbo
Stereostructure of cycloadducts of norbornane/ene-fused dihydro-1,3- and -3,1-oxazines
✍ P. Sohár; G. Stájer; G. Bernáth 📂 Article 📅 1987 🏛 John Wiley and Sons 🌐 English ⚖ 758 KB

The steric structures of the tetracyclic mono-and the pentacyclic bis-adducts formed in the cycloadditions of norbornane-and norbornene-fused 1,3-and 3,l-dihydrooxazine dipolarophiles with diphenylnitrilimine or henzonitrile oxide were investigated. These reactions could yield 2-8 annellation and po