La structure de la cétone C15H16O formée par la réaction entre le norbornadiène et le pentacarbonyle de fer

✍ Scribed by M. Green; E. A. C. Lucken

• Publisher: John Wiley and Sons
• Year: 1962
• Tongue: German
• Weight: 259 KB
• Volume: 45
• Category: Article
• ISSN: 0018-019X
• DOI: 10.1002/hlca.19620450617

✦ Synopsis

Abstract

The value of the spin‐spin coupling constant between vicinal protons is known to vary as cos^2^ φ, where φ is the dihedral angle between the carbon‐hydrogen bonds. A method, based on this relationship, for distinguishing between the exo‐endo isomers of bicycloheptane derivatives is proposed and tested on five such compounds of known structure. In this way, the configuration of I is determineed as exo‐trans‐exo, in contrast to the endo‐trans‐endo configuration proposed by Cookson.