- Method for producing 2-cyanoacetic acid anhydride and further reaction products thereof
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The present invention relates to a process for producing 2-cyanoacetic acid anhydride, comprising the steps of a) preparing a reaction mixture, containing as reactants 2-cyanoacetic acid, and at least one C4-20 carboxylic acid anhydride in at least one organic solvent, wherein the molar ratio of 2-cyanoacetic acid to C4-20 carboxylic acid anhydride in said reaction mixture is greater than 1.5:1, and b) subjecting the reaction mixture to a temperature of 0°C to 100°C to form 2-cyanoacetic acid anhydride. The present invention also relates to process for producing 2-cyanoacetic acid esters, 2-cyanoacetic acid amides and/or 2-cyanoacetic acid thioesters from 2-cyanoacetic acid anhydride.
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Page/Page column 8
(2012/03/11)
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- METHOD FOR PRODUCING 2-CYANOACETIC ACID ANHYDRIDE AND FURTHER REACTION PRODUCTS THEREOF
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The present invention relates to a process for producing 2-cyanoacetic acid anhydride, comprising the steps of a) preparing a reaction mixture, containing as reactants 2-cyanoacetic acid, and at least one C4-20 carboxylic acid anhydride in at least one organic solvent, wherein the molar ratio of 2-cyanoacetic acid to C4-20 carboxylic acid anhydride in said reaction mixture is greater than 1.5:1, and b) subjecting the reaction mixture to a temperature of 0°C to 100°C to form 2-cyanoacetic acid anhydride. The present invention also relates to process for producing 2-cyanoacetic acid esters, 2-cyanoacetic acid amides and/or 2-cyanoacetic acid thioesters from 2-cyanoacetic acid anhydride.
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Page/Page column 14
(2012/02/05)
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