Process for making intermediates for fragrance components from α-campholenic aldehyde

Process for making intermediates for fragrance components from α-campholenic aldehyde

A two-step aldol condensation process is disclosed. α-Campholenic aldehyde (ACA) and methyl ethyl ketone (MEK) react in the presence of a base under conditions effective to produce a mixture comprising a high yield of ketol condensation products. Dehydration of the ketols in the presence of an organ...

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Hauptverfasser: Kolomeyer, Gennadiy G, Oyloe, Jacob, Ferone, Douglas A
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creator Kolomeyer, Gennadiy G
Oyloe, Jacob
Ferone, Douglas A
description A two-step aldol condensation process is disclosed. α-Campholenic aldehyde (ACA) and methyl ethyl ketone (MEK) react in the presence of a base under conditions effective to produce a mixture comprising a high yield of ketol condensation products. Dehydration of the ketols in the presence of an organic sulfonic acid provides unsaturated ketones that are valuable intermediates for fragrance components for synthetic sandalwood products. Compared with the usual one-step, base-catalyzed approach, the two-step process increases the yield of all condensation products and maximizes production of the most valuable ketone isomers.
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Dehydration of the ketols in the presence of an organic sulfonic acid provides unsaturated ketones that are valuable intermediates for fragrance components for synthetic sandalwood products. 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title Process for making intermediates for fragrance components from α-campholenic aldehyde
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