Process for the production of aminocyanoacetic acid ethyl ester
AssigneeLonza Ltd.
InventorEnrico Catalucci
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Abstract
In the process for the production of the ethyl ester of aminocyanoacetic acid by reduction of the ethyl ester of nitrosocyanoacetic acid, the improvement of hydrogenating the ethyl ester of nitrosocyanoacetic acid in a low-boiling polar solvent in the presence of Raney nickel at an excess pressure with hydrogen of 1 to 10 atms. and at a temperature of 10.degree. C. for 40 hours to 60.degree. C. for 8 hours.
Claims3
In the process for the production of the ethyl ester of aminocyanoacetic acid by reduction of the ethyl ester of nitrosocyanoacetic acid, the improvement characterized in that said ethyl ester of nitrosocyanoacetic acid is hydrogenated in a solvent which is selected from the group consisting of methanol, ethanol and a propanol in the presence of Raney nickel at an excess pressure with hydrogen of 1 to 10 atms. and at a temperature of 10.degree. C. for 40 hours to 60.degree. C. for 8 hours.
Dependencies are inferred from the claim text.