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US 2023/0271920 A1Published application
Improved process to produce specific alpha,beta-unsaturated carboxylates
AssigneeDsm IP Assets B.V.
InventorsWerner BONRATH, Estel CANET-MARTINEZ, Roman GOY, Ulrich HINTERMAIR, Jonathan Alan MEDLOCK, Asad SAIB
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Abstract
The present invention relates to a process for producing specific α,β-unsaturated carboxylates.
Claims16
Process for the production of a compound of formula (I)
- wherein
- R1 is a C1-C4-alkyl moiety, preferably —CH3 or —CH2CH3, and
- R2 is
- (the * is showing where the bond is localized), and wherein a compound of formula (II)
- is reacted with a compound of formula (III)
- wherein the R1 and R2 have the same meanings as defined above for the compound of formula (I) in the presence of at least one catalyst of formula (IV)
- wherein
- R3, R4, R5 and R6 signify independently from each other —CH3, —OCH3, —NO2 or halogen, and
- W, X, Y and Z signify independently from each other a neutral or ionic ligand, wherein W, X, Y and Z can be monodentate or bidentate with the proviso that the Ru is always six times coordinated, and
- m, n, o and p signify an integer 0, 1, 2 or 3
- q signifies an integer 1, 2, 3 or 4.
8 more elements
Compounds of formulae (IV′), (IV″) and (IV′″)
- wherein
- R3, R4, R5 and R6 signify independently from each other —CH3, —OCH3, —NO2 or halogen, and
- W, X, Y and Z signify independently from each other a neutral or ionic ligand, wherein W, X, Y and Z can be monodentate or bidentate with the proviso that the Ru is always six times coordinated, and
- m, n, o and p signify an integer 0, 1, 2 or 3
- q signifies an integer 1, 2, 3 or 4.
2 more elements
Compounds of formulae (IVa), (IVb), (IVc′) and (IVc″)
Dependencies are inferred from the claim text.