Process for making 3-(3,5-di-alkyl -4- hydroxyphenyl)...

Details Process for making 3-(3,5-di-alkyl -4- hydroxyphenyl)... Process for making 3-(3,5-di-alkyl -4- hydroxyphenyl)...

C - Chemistry, Metallurgy

07

C

260/478.3

C07C 233/16 (2006.01)

Patent

CA 1130310

ABSTRACT OF THE DISCLOSURE An improved method for making 3-(3,5-dialkyl-4-hydroxyphenyl) propionates of hydroxyalkyloxamides involved heating the hydroxy- alkyloxamide with a lower alkyl ester of 3-(3,5-dialkyl-4-hydroxy- phenyl)propionic acid in the presence of an alkanestannonic acid at a temperature of 150° to 230°C, the lower boiling alcohol being removed by distillation.

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