Process for the production of 2-chloroacetoacetic acid amides

Details Process for the production of 2-chloroacetoacetic acid amides Process for the production of 2-chloroacetoacetic acid amides

C - Chemistry, Metallurgy

07

C

260/556

C07C 51/58 (2006.01)

Patent

CA 1212960

PROCESS FOR THE PRODUCTION OF 2-CHLOROACETOACETIC ACID AMIDES ABSTRACT OF THE DISCLOSURE Process for the production of 2-chloroacetoacetic acid amides. Diketene is converted at a temperature of +30° to -40°C. with the help of hydrogen chloride into acetoacetic acid chloride. Chlorine is introduced into the mixture at a temperature of +30° to -40°C., whereby 2-chloroacetoacetic acid chloride is formed. The latter is converted into the correspon- ding amide at a temperature of +50° to -40°C. by reaction with a N-compound having the formula: Image wherein (i) R = R' = H, or (ii) R = R' = alkyl, substituted alkyl, aryl, substituted aryl, alkyl aryl, substituted alkyl aryl, alkoxy aryl, substituted alkoxy aryl, alkoxy alkyl or substituted alkoxy alky, or (iii) R = H, and R'= alkyl, substituted alkyl, aryl, substituted aryl, alkyl aryl, substituted alkyl aryl, alkoxy aryl, substituted alkoxy aryl, alkoxy alkyl or substituted alkoxy alkyl.

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