Methods for preparing aldehydes by self-aldol condensation
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United States of America Patent
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Dec 15, 2009
Grant Date -
Oct 29, 2009
app pub date -
Apr 24, 2008
filing date -
Apr 24, 2008
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Expired
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Abstract
Methods for preparing self-aldol condensation products of prenyl aldehyde (3-methyl-2-butenal) by use of an amine catalyst under weakly acidic conditions at temperatures of 10° C. or higher are disclosed. Methods are disclosed for the selective formation of α-1,2-adducts and γ-1,2-adducts of prenyl aldehyde, and for the formation of specialty compositions useful in the flavor and fragrance industries.
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