Chemistry Letters, Vol.36, No.8, 1074-1075, 2007
A facile and convenient synthesis of N-acetyl-2-aryl-1,2-dihydro-(4H)-3,1-benzoxazin-4-ones from the reaction of anthranilic acid derivatives with aryl aldehydes
A facile and convenient synthesis of N-acetyl-2-aryl-1,2dihydro-(4H)-3,1-benzoxazin-4-ones has been reported by cyclization of some 2-(benzylideneamino)benzoic acids in acetic anhydride under reflux condition. High yields of the products were obtained in high purity with simple work-up.