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US 6,673,957 B2Granted
Method for producing alkoxy malonic acid dinitriles
AssigneeLonza Ltd.
InventorsJohannes Bartek, Rudolf Fuchs, Stefan Hildbrand
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Abstract
A method for producing alkoxy malonic acid dinitrites of general formula (I), wherein R1 means C1-6-alkyl or halogen-substituted C1-6-alkyl. The method involves converting the corresponding alkoxy malonic acid diamides of general formula (II), wherein R1 has the aforementioned meaning, by means of a dehydrating agent. The intermediate products of general formula (III), whereby the products are formed during dehydration.
Claims7
A process for preparing alkoxymalononitriles of the general formula
- where R1 is C1-6-alkyl or halogen-substituted C1-6-alkyl, characterized in that the appropriate alkoxymalonamides of the general formula
- where R1 is as defined above are reacted with a dehydrating agent.
Dependencies are inferred from the claim text.