2-({3,3-dimethyl-1-oxido-5-[(E)-2-(pyren-1-yl)vinyl]-3,4-dihydro-2H-pyrrol-2-yl}oxy)ethanol 、
丁炔二酸二甲酯 以
甲苯 为溶剂,
以90%的产率得到(3aRS,6RS,E)-dimethyl 6-(2-hydroxyethoxy)-5,5-dimethyl-3a-[2-(pyren-1-yl)ethenyl]-3a,4,5,6-tetrahydropyrrolo[1,2-b]isoxazole-2,3-dicarboxylate