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CAPLUS COPYRIGHT 2011 ACS
|Patent Number: ||US 7842841 |
|Title: ||Novel process for the preparation of timberone |
|Inventor(s): ||Bonrath, Werner; Schuetz, Jan |
|Patent Assignee(s): ||DSM IP Assets B. V., Neth. |
|Source: ||PCT Int. Appl. 13pp. CODEN: PIXXD2 |
|Language: ||English |
This invention relates to a novel process for the prepn. of timberone useful for perfume or cosmetics. Aldol condensation of citral with 2-pentanone gave (E/Z)-Me(CH2)2COCH:CHCH:CMe(CH2)3CH:CMe2 which was cyclized using H3PO4 to give cyclohexene I. I was then hydrogenated to give the title compd. in 91% yield.
View the full-text patent from USPTO.