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US 12,516,020 B2Granted
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.
Claims21
A process for producing a compound of formula (I):
- wherein
- R1 is a C1-C4-alkyl moiety, and
- R2 is
- wherein
- the symbol * shows a location where the bond is localized, wherein the process comprises:
- reacting a reaction mixture comprising a compound of formula (II):
- and a compound of formula (III):
- wherein
- 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 formulas (IVa), (IVb) and/or (IVc):
- wherein R7 is H or CH3,
- to form the compound of formula (I).
9 more elements
A process for producing a compound of formula (I):
- wherein
- R1 is a C1-C4-alkyl moiety, and
- R2 is
- and wherein
- the symbol * shows a location where the bond is localized, wherein
- the process comprises reacting a reaction mixture comprising a compound of formula (II):
- a compound of formula (III):
- and
- a compound of formula (V):
- wherein 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,
- 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,
- m, n, o and p signify an integer 0, 1, 2 or 3, and
- q signifies an integer 1, 2, 3 or 4.
13 more elements
Dependencies are inferred from the claim text.