at a temperature of from about 50.degree. to about 80.degree.C., preferably at60.degree. to 70.degree.C. The acidic mixture is cooled and maintained below about 50.degree.C. while the solution is basified using a strongly basic solution as, for example, 50% sodium hydroxide; the acetamide products are extracted with a suitablesolvent such as chloroform or ethyl acetate, the extract concentrated an