Five-membered 2,3-dioxo heterocycles: CII. Spiro heterocyclization of 3-aroylpyrrolo[2,1-c][1,4]benzoxazine-1,2,4-triones by the action of tetrahydroquinoline
摘要:
3-Aroylpyrrolo[2,1-c][1,4]benzoxazine-1,2,4-triones reacted with 1,2,3,4-tetrahydroquinoline to give 3-aroyl-4-hydroxy-1-(2-hydroxyphenyl)-5',6'-dihydrospiro[pyrrole-2,1'-pyrrolo[3,2,1-ij]quinoline]-2',5(1H,4'H)-diones.