Process for the preparation of alkyl 3-oxo-2-pentyl-1-cyclopenteneacetates
The present invention relates to the field of organic synthesis. It relates, more particularly, to a process for the preparation of alkyl 3-oxo-2-pentyl-1-cylopentene-1-acetates of the general formula The present invention discloses a process for the preparation of a compound according to formula wh...
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| Main Authors | , , |
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| Format | Patent |
| Language | English |
| Published |
01.07.2003
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| Online Access | Get full text |
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| Summary: | The present invention relates to the field of organic synthesis. It relates, more particularly, to a process for the preparation of alkyl 3-oxo-2-pentyl-1-cylopentene-1-acetates of the general formula
The present invention discloses a process for the preparation of a compound according to formula wherein Ris a C-Calkyl group and Ris a Cto C, linear or branched, alkyl radical, more preferably a methyl group, characterized in that the process includes the isomerisation of an epoxide of formula wherein Rand Rhave the meaning given in formula (I), in the presence of an acidic isomerisation agent, a thermal treatment or a combination thereof. The process according to the invention allows the preparation of the cyclopentenyl compounds of formula (I) on an industrial scale. The compounds are important starting products for the production of appreciated perfuming ingredients in particular methyl dihydrojasmonates. |
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