5-methyl-6-pentyl-tetrahydro-.alpha.-pyrone and analogs

Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...

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512 11, C07D30900

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active

052487920

ABSTRACT:
The invention concerns odorant and flavorant compositions which contain one or more compounds of the formula ##STR1## wherein R represents an alkyl group having from three to eight carbon atoms. The invention also concerns 5-methyl-6-pentyl-tetrahydro-.alpha.-pyrone (compound of formula I in which R represents pentyl) in the form of its cis-isomer, its trans-isomer or its cis/trans isomer mixture, and a process for its manufacture by a Bayer-Villiger oxidation of 2-pentyl-3-methyl-cyclopentan-1-one. As fields of use for these compounds there come into consideration, for example, perfume and flavoring compositions, foodstuffs, semi-luxury consumables and drinks.

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