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US 9,790,164 B2Granted
Process of production of dehydrolinalyl acetate (II)
AssigneeDsm IP Assets B.V.
InventorsWerner Bonrath, Fabrice Aquino, Johannes Tschumi
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Abstract
The present invention is related to a novel and improved process for the production of dehydrolinalyl acetate (DLA), which IUPAC name is acetic acid 1-ethynyl-1,5-dimethyl-hex-4-enyl ester, starting from dehydrolinalool (DLL), which IUPAC name is 3,7-dimethyloct-6-en-1-yn-3-ol, by acetylation.
Claims4
A process for the production of dehydrolinalyl acetate (DLA) which is a compound of formula (I):
- wherein the process comprises reacting dehydrolinalool (DLL) which is a compound of formula (II):
- in a reaction solution with acetic anhydride which is a compound of formula (III):
- at a ratio of the compound of formula (III) to the compound of formula (II) of 1.5:1 up to 5:1, wherein
- the process is carried out in the absence of any catalyst at normal pressure and a temperature of 100-160° C. for 2 to 20 hours to yield DLA in an amount of 70% or greater.
1 more element
Dependencies are inferred from the claim text.