Provided that a method for inexpensively producing optically active α-ionone with a high yield and a high asymmetric yield and with good workability in a short process, and a perfume composition comprising the optically active α-ionone obtained by the aforementioned method. A method for producing optically active α-ionone, comprising allowing α-ionone as a mixture of optical isomers to react with an esterification agent, and hydrolyzing the obtained α-ionone enol ester; a method for producing optically active α-ionone comprising subjecting α-ionone as a mixture of optical isomers to an asymmetric reduction, allowing the obtained optically active α-ionol to react with an esterification agent to give an optically active α-ionol ester, hydrolyzing the obtained optically active α-ionol ester after purification as necessary, and then oxidizing the obtained optically active α-ionol; and a perfume composition comprising thus obtained optically active α-ionone.
提供一种廉价高产、高对映选择性并具有良好可操作性的短流程制备光学活性α-离子酮的方法,以及包含上述方法得到的光学活性α-离子酮的
香料组合物。制备光学活性α-离子酮的方法包括将光学异构体混合物的α-离子酮与酯化试剂反应,并
水解所得的α-离子酮烯醇酯;制备光学活性α-离子酮的方法包括将光学异构体混合物的α-离子酮进行不对称还原,使所得的光学活性α-离子醇与酯化试剂反应以得到光学活性α-离子醇酯,在必要时经过纯化后
水解所得的光学活性α-离子醇酯,然后将所得的光学活性α-离子醇进行氧化;以及包含所得光学活性α-离子酮的
香料组合物。