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US 10,870,617 B2Granted
Method for preparing dialkyl dicarbonates using amine oxides
AssigneeLANXESS Deutschland GmbH
InventorChristoph Hofmann
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Abstract
The present invention relates to a method for preparing dialkyl dicarbonates from the corresponding alkyl chloroformates using specific amine oxides as catalysts.
Claims15
A method for preparing dialkyl dicarbonates, comprising reacting an alkyl haloformate with at least one alkali metal hydroxide, alkaline earth metal hydroxide and/or carbonate in the presence of at least one organic solvent immiscible with water and in the presence of a catalyst, wherein the catalyst is at least one compound of the formula (I)
- in which
- R1 and R2 is straight-chain or branched C1-C6-alkyl,
- R3 is straight-chain or branched C10-C22-alkyl,
- wherein R1 and R2 may be the same or different.
1 more element
Dependencies are inferred from the claim text.