Strukturaufklärung eines Dimethylfulven-Trimeren. Hinweis auf eine [6 + 4]-Cycloaddition von 6, 6-Dimethylfulven

✍ Scribed by Beat Uebersax; Markus Neuenschwander; Peter Engel

• Book ID: 102856656
• Publisher: John Wiley and Sons
• Year: 1982
• Tongue: German
• Weight: 885 KB
• Volume: 65
• Category: Article
• ISSN: 0018-019X
• DOI: 10.1002/hlca.19820650110

✦ Synopsis

Structure Elucidation of a Dimethylfulvene‐trimer. Evidence for a [6+ 4]‐Dimerization of 6, 6‐Dimethylfulvene

Thermal reaction of pure 6, 6‐dimethylfulvene (1c) at 60° gives an oligomeric mixture consisting mainly of fulvene‐trimers. The structure of the main product 3c is partially elucidated by ^1^H‐NMR. investigations at 400 MHz and definitely confirmed by X‐ray analysis. The formation of 3c is explained in terms of a [6+4] dimerization, followed by a 1, 5‐proton‐shift and a final Diels‐Alder reaction.