The transannular photocyclization of the cis,cis-cyclodecs-1,6+lienes to the tricyolo 5.3.0.02p6 --C 3 decane (1) may be explained due to the proximity in space of the two double bonds in the ~~hamnocks conformation I (2). Hence, in an intramolecular photocyclization of the isomeric trans,trans,cycl
Crystal Structure Analysis of a trans, trans-Cyclodeca-1, 6-diene Derivative
✍ Scribed by David N. J. White
- Publisher
- John Wiley and Sons
- Year
- 1973
- Tongue
- German
- Weight
- 260 KB
- Volume
- 56
- Category
- Article
- ISSN
- 0018-019X
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
An X‐ray crystal structure analysis of the higher melting diastereoisomer of 2,7‐dibromo‐3,8‐dimethoxy‐trans,trans‐cyclodeca‐1,6‐diene (Monoclinic; a = 5.76, b = 10.43, c = 11.32 Å, β = 94.04°; space group P2~1~/n; Z = 2) has confirmed the NMR. assignment of the molecular conformation and the trans configuration of the methoxy groups. The trans,trans‐cyclodeca‐1,6‐diene ring adopts a centrosymmetric crown conformation with a CCCC torsion angle of 162°.
📜 SIMILAR VOLUMES
**Kristalline und molekulare Struktur von __trans__‐[(2‐chlorphenyl)‐1‐benzocyclobutenyl]‐(1,4,5,6‐tetrahydro‐ pyrimidyl)‐sulfid.** Zur Abklärung von Konstitution und Konfiguration der Titelverbindung wurde eine Röntgenstrukturanalyse durchgeführt. Die Kristalle gehören zur monoklinen Raumgruppe C_