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US 9,447,017 B2Granted
Process for the production of 4-alkanoyloxy-2-methylbutanoic acid
AssigneeDsm IP Assets B.V.
InventorsWerner Bonrath, Jan Schütz, Bettina Wüstenberg, Thomas Netscher
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Abstract
The present invention relates to an improved process for the production of 4-alkanoyloxy-2-methylbutanoic acid, as well as to the use of such compounds in organic syntheses, especially in processes forming intermediates (building blocks) for the synthesis of organic compounds comprising isoprene (isoterpene) units, such as β-carotene or other carotenoids (e.g. canthaxanthin, zeaxanthin or astaxanthin) or as vitamin E or vitamin A as well as other structurally similar compounds.
Claims17
A process for producing a compound of formula (I):
- wherein R signifies a C1-C15 alkyl moiety or a C2-C18 alkenyl moiety,
- wherein the process comprises oxidizing a compound of formula (II):
- wherein R in formula (II) is the same as defined for the compound of formula (I), in an oxygen-containing gas and in the presence of at least one transition metal salt as a catalyst.
Dependencies are inferred from the claim text.