A recent report (1) describing the nature of the 2-bicyclo[3.1.0]hexyl cation formed in the solvolysis of epimeric 2-chlorobicyclo[3.1.0]hexanes prompts us to report our work on this system which provides an explanation for the small difference in rate between endo-and exo-isomers. Endo-(Ib) and ex
NMR isotope shifts in the 2-methyl-2-bicyclo[2.1.1]hexyl cation and related systems
β Scribed by David A. Forsyth; Chitchanun Panyachotipun
- Book ID
- 114996527
- Publisher
- Springer Netherlands
- Year
- 1996
- Tongue
- English
- Weight
- 506 KB
- Volume
- 22
- Category
- Article
- ISSN
- 0922-6168
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## Abstract Well resolved natural abundance ^17^O NMR spectra of 27 monoβ, diβ, triβ and tetrahydroxybicyclo[2.2.1]heptenes and βheptanes (norbornenes or norbornanes), their methylated derivatives and some related compounds were measured for 0.5 M or saturated solutions in acetonitrile at 65Β°C. In
In FSOsH/SO&lF at -50 to -100' the nonamethylbicyclo[3.2.1] octadien-2-yl cation 1 undergoes an nmr-observable reversible exchange process which equilibrates methyls 2,3,4,6 and 7 and methyls 8 and 9, but leaves the bridgehead methyls (1 and 5) unique.l CIRCUMAMBULATION 3 This observation was ration