28175-88-4Relevant academic research and scientific papers
HETEROCYCLIZATION WITH IMINIUM CHLORIDES, II. SYNTHESIS OF 4H--BENZOXAZINE-4-ONES AND QUINAZOLINONES
Bitter, I.,Szoecs, L.,Toeke, L.
, p. 57 - 66 (2007/10/02)
Reactions between methyl anthranilate and a variety of PI salts afforded 2-ammonio-4H--benzoxazine-4-one chlorides which were subjected to nucleophilic reactions.With primary amines, 2-ureidoanthraniloyl amides were obtained, which were smoothly cyclized in boiling acetic anhydride or dimethylformamide to give 1H,3H-quinazoline-2,4-diones.
