Method for the manufacture of α,β-unsaturated ketones
AssigneeSymrise AG
InventorsNazaret Rivas Bascón, Ricardo Rodriguez Ferrol, Antonio Ruiz Sanchez
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Abstract
A method for the manufacture of an α,β-unsaturated ketone, which method comprises oxidizing an alkene having —CH2— adjacent a carbon-carbon double bond to α,β-unsaturated ketone by passing air or oxygen through a solution of the hydrocarbon containing a catalyst consisting of N-hydroxyphthalimide (NHPI) and cobalt diacetate tetrahydrate at standard temperature and pressure during a period of at least 12 hours.
Claims13
A method for the manufacture of an α,β-unsaturated ketone, which method comprises oxidizing an unsaturated hydrocarbon having —CH2- adjacent a carbon-carbon double bond (“the alkene”), wherein the alkene is selected from the group of compounds consisting of:
- to α,β-unsaturated ketone by passing air or oxygen through a solution of the alkene containing a catalyst consisting of N hydroxyphthalimide (NHPI) and cobalt diacetate tetrahydrate, wherein the mole ratio of cobalt diacetate tetrahydrate to NHPI catalyst is from 1:4 to 1:6 and wherein the amount of NHPI catalyst is less than 15% mole equivalent of the alkene in solvent comprising one or more of methyl propyl ketone (MPK), methyl isopropyl ketone (MIPK), methyl butyl ketone (MBK) and methyl isobutyl ketone (MIBK) at standard temperature and pressure during a period of at least 12 hours.
Dependencies are inferred from the claim text.