Synthesis of the Pirrolo[2,1-<i>a</i>][1,4]oxazine-1,6,7-triones by the Reaction of 3-Methylenemorpholine-2-ones with Oxalyl Chloride
By the reaction of 3-(2-aryl-2-oxoethylidene)morpholin-2-ones with oxalyl chloride, 8-aroyl-3,4-dihydropyrrolo[2,1- a ][1,4]oxazin-1,6,7(1 H )-trions was obtained.