1992 年 41 巻 1 号 p. 48-51
The isomerization of terpinolene oxide (1) in the presence of montmorillonite K-10 catalyst was studied. High selectivity of Karahanaenone [(2), 2, 2, 5-trimethy1-4-cyclohepten-1-one, isolated yield 82 %] was attained by the simple solid-liquid phase heterogeneous reaction.