Stereochemical Studies of Monoterpene Compounds. XVIII. A Conformational Study of Monoterpene α,β-Unsaturated Ketones by Means of the Temperature-dependent Circular Dichroism
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概要
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The conformations of flexible, cyclic α,β-unsaturated ketones, (−)-<I>p</I>-menth-3-en-5-one (<B>1</B>), (+)-carvone (<B>2</B>), (−)-piperitone (<B>3</B>), (−)-carvenone (<B>4</B>), and (+)-pulegone (<B>5</B>), were examined by means of the temperature-dependent circular dichroism (CD) in the region of the <I>n</I>-π<SUP>*</SUP> transition. In polar solvents, the simultaneous occurrence of the conformational equilibrium and the asymmetric solvation was observed markedly for the compound <B>1</B> of these compounds, along with a change in the large rotational strength at lower temperatures.
- 公益社団法人 日本化学会の論文
著者
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Suga Takayuki
Department Of Chemistry Facalty Of Science Hiroshima University
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Imamura Kiyoshi
Department of Chemistry, Faculty of Science, Hiroshima University
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