𝔖 Bobbio Scriptorium
✦   LIBER   ✦

The conformations of bicyclo[3.1.0]hexane derivatives by 1H and 13C NMR

✍ Scribed by John C. Rees; David Whittaker

Publisher
John Wiley and Sons
Year
1981
Tongue
English
Weight
601 KB
Volume
15
Category
Article
ISSN
0749-1581

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

The ^1^H and ^13^C spectra of bicyclo[3.1.0]hexanes and thujanes have been recorded and assigned. Application of the Karplus equation has yielded dihedral angles, and a computer calculation of the angle of ring buckle as a function of the main dihedral angles has been carried out. The calculated angles of ring buckle agree well with known values in the bicyclo[3.1.0]hexanes, but for 1‐methylbicyclo[3.1.0]hexanes and thujanes the results are not self consistent. It is suggested that the bridgehead substituent causes the boat to twist, although the twist can be reduced by an axial methyl substituent on C‐4.

📜 SIMILAR VOLUMES

The NMR spectra and conformations of cyc
The NMR spectra and conformations of cyclic compounds: IX—conformational studies of bicyclo(3,1,0)hexane derivatives by 13C NMR
✍ Raymond J. Abraham; Collette M. Holden; Philip Loftus; David Whittaker 📂 Article 📅 1974 🏛 John Wiley and Sons 🌐 English ⚖ 564 KB

## Abstract The ^13^C spectra of α‐thujene (**1**), isothujone (**2**), (−)isothujol (**3**), (+)neoisothujol (**4**), sabinol (**5**), dihydroumbellulone (**6**) and umbellulone (**7**) and the alcohol acetates are recorded and assigned. The C‐6 chemical shift may be used in conjunction with the s

Conformational studies of monoterpenes.
Conformational studies of monoterpenes. II–conformational studies of bicyclo[3.1.1]heptane derivatives by 13C NMR
✍ Collette M. Holden; David Whittaker 📂 Article 📅 1975 🏛 John Wiley and Sons 🌐 English ⚖ 316 KB

## Abstract The carbon‐13 spectra of seventeen bicyclo[3.1.1]‐heptane derivatives have been recorded and assigned. Study of the C‐6 and C‐7 chemical shifts permits the conformations to be assigned to the bridged chair, Y‐shaped, or bridged boat conformations. The spectrum of verbenone is anomalous

Structural studies in the bicyclo [3.1.1
Structural studies in the bicyclo [3.1.1]heptane series by 1H and 13C NMR
✍ A. Y. Badjah-Hadj-Ahmed; B. Y. Meklati; H. Waton; Q. T. Pham 📂 Article 📅 1992 🏛 John Wiley and Sons 🌐 English ⚖ 874 KB

## Abstract The ^1^H and ^13^C NMR spectra of 22 pinane derivatives have been recorded and completely assigned. The spectral data for this set of compounds provide information about the conformation of these molecules and allow the deduction of the various structural effects observed in the bicyclo