7-methyl-3-(4-methylbenzoyl)pyrrolo[2,1-c][1,4]benzoxazine-1,2,4-trione 、 N,N'-dihydroxycyclohexane-1,2-diamine 以
乙腈 为溶剂,
反应 0.05h,
以67%的产率得到1',4,4'-trihydroxy-1-(2-hydroxy-4-methylphenyl)-3-(4-methylbenzoyl)-4a',5',6',7',8',8a'-hexahydro-1'H-spiro[pyrrole-2,2'-quinoxaline]-3',5(1H,4'H)-dione