Process for the synthesis of n-vinyl amides

Details Process for the synthesis of n-vinyl amides Process for the synthesis of n-vinyl amides

C - Chemistry, Metallurgy

07

C

C07C 233/02 (2006.01) C07C 231/12 (2006.01)

Patent

CA 2042854

ABSTRACT N-vinyl amides having the general structural formula: CH2 = CH-NHCOR1 wherein R1 is hydrogen, a C1 to C6 alkyl group or a C6-C9 aryl or substituted aryl group, are formed by cracking carboxylic acid amides having the general structure formula: Image wherein R1 is as described above, and R2 is a C1 to C9 alkoxy, carboxy or carboxamide group. Said carboxylic acid amides are cracked by heating, to a temperature of about 210°-350°C, in the presence of a catalyst comprising MgS or an oxide or mixed oxide of Ca or Sr.

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