CuCO3 catalyzed 1, 3-dipolar cycloaddition of isatin N,N′‑cyclic azomethine imine has been developed. Biologically active heterocyclic spiro[indoline-3,1'-pyrazolo[1,2-a]pyrazoles] were prepared as single regioisomers in good yields and functional group compatibility.
Keywords: cycloaddition isatin N,N′‑Cyclic Azomethine Imines heterocycles 1,3-Dipolar
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Shi, Y.; Wang, G.; Chen, Z.; Wu, M.; Wang, J.; Trigoura, L.; Guo, H.; Xing, Y.; Sun, S. Beilstein Arch. 2019, 201963. doi:10.3762/bxiv.2019.63.v1
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