## Abstract A series of 6‐X‐3,8‐dioxatricyclo[3.2.1.0^2,4^]octanes (XCO~2~CH~3~, CN, Cl and CN) are studied by NMR, after their syntheses by epoxidation of the corresponding 7‐oxabicyclo[2.2.1]heptenes. The NMR parameters (__J__, δ) are determined, and also the anisotropy effects of methyl groups
1H NMR study of 2,8-dithia-1,5-dielementbicyclo[3.3.0]octanes
✍ Scribed by A. Zschunke; C. Mügge; H. Meyer; A. Tzschach; K. Jurkschat
- Publisher
- John Wiley and Sons
- Year
- 1983
- Tongue
- English
- Weight
- 280 KB
- Volume
- 21
- Category
- Article
- ISSN
- 0749-1581
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The 'H and I3C NMR spectra of six bromo-and methoxybicyclo[3.2.1]octanes were completely assigned. An axial bromine substituent at C-2 or C-4 results in a 5 ppm upfield shift of C-8 due to the gauche interaction. An equatorial bromine results in an upfield shift of similar magnitude on either C-6 (o
## Abstract Anhand von ^13^C‐ und ^31^P‐Spektren wird die Struktur 1‐ sowie 2‐substituierter 1,2‐Diphospholane, des 1,5‐Diphosphabicyclo[3.3.0]octans und dessen P‐Derivate ermittelt. Die ^31^P‐chemischen Verschiebungen zeigen für letztere eine zusätzliche sterisch bedingte Wechselwrikung der Phosph
## Abstract A new heterocyclic system, 1‐thio‐2,8‐diphenyl‐2,5,8‐triaza‐1λ^5^‐phosphabicyclo[3.3.0]octane, has been prepared, and its structure was confirmed by single‐crystal X‐ray diffraction. Preliminary reactivity studies demonstrated a complex mechanism for the acid‐catalyzed methanolysis. Gas