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US 10,501,396 B2Granted
Continuous production method for 2-methylene alkanals
AssigneeOxea GmbH
InventorsKurt Schalapski, Jan-Henry Rahe, Christoph Balzarek, Gregor Meier, Heinz Strutz
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Abstract
The present invention relates to the continuous production of 2-methylene alkanals in a tube reactor, wherein in the 2-position non-branched alkanals are reacted with formaldehyde under acid-base catalysis in the presence of secondary amines and carboxylic acids under laminar flow conditions.
Claims20
A method for producing 2-methylene alkanals of the general formula I
- wherein R1 is an aliphatic residue, by reacting alkanals of the general formula II
- with an aqueous formaldehyde solution in the presence of at least one secondary amine and at least one carboxylic acid, characterized in that the educts are reacted in a liquid/liquid two-phase system, wherein the reaction is carried out continuously within a tube reactor under laminar flow conditions with a Reynolds number of greater than or equal to 10 and less than or equal to 2320.
Dependencies are inferred from the claim text.