An organocatalytic asymmetric synthesis of spironitrocyclopropanes has been demonstrated starting from 2-arylidene-1,3-indandiones and bromonitroalkanes catalyzed by a cinchona-derived bifunctional organocatalyst. The products were obtained with excellent enantioselectivities, diastereoselectivities and with good yields.
U. Das, Y. Tsai and W. Lin, Org. Biomol. Chem., 2013, 11, 44 DOI: 10.1039/C2OB26943K
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