Acid-catalyzed isomerization of thujopsene

GC Kitchens, HU Daeniker…

Index: Daeniker,H.U. et al. Journal of Organic Chemistry, 1972 , vol. 37, # 1 p. 1 - 5

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Citation Number: 28

Abstract

The acid-catalyzed isomerization of (-)-thujopsene (1) under nonaqueous conditions proceeds principally via the isolable spiro olefin intermediates a-and 0-chamigrene (8 and 9) to a complex mixture of isomeric tricyclic olefins. The major component of this complex mixture is rigorously shown to be 7, 10-ethano-4, 4, 7-trimethyl-1 (9)-octalin (10).