Bridgehead?bridgehead 13C?13C coupling constant of a bicyclobutane
✍ Scribed by Pomerantz, Martin; Fink, Rina
- Book ID
- 111890868
- Publisher
- The Royal Society of Chemistry
- Year
- 1975
- Tongue
- English
- Weight
- 166 KB
- Volume
- 11
- Category
- Article
- ISSN
- 0022-4936
No coin nor oath required. For personal study only.
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## Abstract Measurement of the ^13^C NMR spectra of the bridgehead nitro compounds __1a–5a__ has been performed. It is found that one‐bond ^13^C^15^N coupling is not necessarily a reflection of the degree of s character of the bridgehead carbon exocyclic bonding orbital. Although the magnitude of
## Abstract One bond ^13^C,^13^C‐ and ^13^C,^1^H‐coupling constants have been measured for some 1,2‐dimethylene‐cycloalkanes, as well as for 2,3‐dimethylbuta‐1,3‐diene and methylenecyclobutane. The results for 2,3‐dimethylbuta‐1,3‐diene confirm the findings for buta‐1,3‐diene, i.e. that __J__(C‐1,
## Abstract Five ^13^C‐labelled cyclobutane derivatives were synthesized and the couplings involving the labelled carbon were determined.