The chemistry of cycloheptatriene: Part X: Photochemical shift of hydrogen in cycloheptatrienes
β Scribed by A. P. Ter Borg; H. Kloosterziel
- Publisher
- Elsevier Science
- Year
- 2010
- Tongue
- English
- Weight
- 170 KB
- Volume
- 84
- Category
- Article
- ISSN
- 0165-0513
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## Abstract 7βPhenylcycloheptatrieneβ1,3,5 rearranges on heating to a mixture of the 3β, 1β and 2βisomers. These are formed in the order indicated by successive transβannular 1β5 shifts of hydrogen. The isomerization of the 7β to the 3βisomer, by which the trienic and aromatic systems enter into co
## Abstract Reduction of cycloheptatriene (I) and cycloheptadiene (II) with 2 equivalents of sodium in liquid ammonia yields β after addition of ethanol β cycloheptadiene and cycloheptene (III), respectively. These reactions proceed via coloured intermediates. Reduction of I with 4 equivalents of