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Nitrogen inversion in 3,6-dihydro-1,2-oxazines

โœ Scribed by Henryk Labaziewicz; Frank G. Riddell


Publisher
John Wiley and Sons
Year
1980
Tongue
English
Weight
213 KB
Volume
14
Category
Article
ISSN
0749-1581

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โœฆ Synopsis


Abstract

The nitrogen inversion barriers of nine 3,6โ€dihydroโ€1,2โ€oxazines are discussed. Polar solvents were found to increase the nitrogen inversion barriers which, in turn, decrease with increasing size of the Nโ€substituent.


๐Ÿ“œ SIMILAR VOLUMES


1,2-oxazine chemistry. Vโ€”vicinal, allyli
โœ F. G. Riddell; H. Labaziewicz ๐Ÿ“‚ Article ๐Ÿ“… 1974 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 163 KB

## Abstract The ^1^H NMR spectra of thirteen dihydroโ€1,2โ€oxazine derivatives are reported. Spin decoupling allows analysis of the spectra, features of which include homoallylic couplings of +2 to +2ยท5 Hz, allylic couplings of โˆ’1ยท5 to โˆ’1ยท7 Hz and vicinal couplings across __sp__^2^ to __sp__^3^ carbo

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