| abstract |
A method for producing optically active α-yonone in a short process with good yield and asymmetric yield, low cost and good workability, and a fragrance composition containing optically active α-yonone obtained by the above method. A process for producing optically active α-ionone by reacting α-ionone, which is a mixture of optical isomers, with an esterifying agent and hydrolyzing the resulting α-ionone enol ester, and α, which is a mixture of optical isomers -Asymmetric reduction reaction of nonone, the optically active α-yonol obtained is reacted with an esterifying agent to obtain an optically active α-yonol ester, which is purified as necessary and then hydrolyzed, A method for producing an optically active α-ionone that is then oxidized, and a fragrance composition containing the optically active α-yonone obtained as described above. |