Invention Grant
- Patent Title: Method for producing optically active α-ionone
-
Application No.: US11991966Application Date: 2006-09-13
-
Publication No.: US07902404B2Publication Date: 2011-03-08
- Inventor: Tetsuya Yamamoto , Kenji Yagi , Kenya Ishida
- Applicant: Tetsuya Yamamoto , Kenji Yagi , Kenya Ishida
- Applicant Address: JP Tokyo
- Assignee: Takasago International Corporation
- Current Assignee: Takasago International Corporation
- Current Assignee Address: JP Tokyo
- Agency: Venable LLP
- Agent Keith G. Haddaway; Michael E. Nelson
- Priority: JP2005-265643 20050913
- International Application: PCT/JP2006/318133 WO 20060913
- International Announcement: WO2007/032375 WO 20070322
- Main IPC: C07C45/42
- IPC: C07C45/42

Abstract:
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.
Public/Granted literature
- US20090216039A1 Method for Producing Optically Active Alpha-Ionone Public/Granted day:2009-08-27
Information query