Synthesis of New 3 a,6 a-Dihydro-4,6-dioxopyrrolo[3,4- d]pyrazoleDerivatives by 1,3-Dipolar Cycloaddition Reaction
XIE Zheng-Feng, LIU Fang-Ming* 1,2, MO Xue-Xia, HUI Yong-Hai, SUN Ya-Dong 1
Chin. J. Org. Chem. . 2005, (06): 696 -699 .