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Beilstein J. Org. Chem. 2013, 9, 1148–1155, doi:10.3762/bjoc.9.128
Graphical Abstract
Figure 1: Cascade bond formation based on radical reactions.
Figure 2: Our method for controlling the geometry of substrates and the stereochemistry of cyclization.
Scheme 1: Effect of hydroxamate ester on intermolecular C–C bond-forming reactions.
Figure 3: Substrates for testing the cascade transformation.
Scheme 2: Cascade radical addition–cyclization–trapping reaction of 5 and 6A–C.
Figure 4: E/Z-selectivity of 9Aa–Ca.
Scheme 3: Enantioselective cascade reaction of 6A–C.
Figure 5: Model for the enantioselective reaction.
Scheme 4: Reaction of propiolic acid derivatives 7 and 8.
Scheme 5: Opposite regiochemical cyclization using substrate 12.
Scheme 6: Cascade reaction of 14.
Scheme 7: Enantioselective cascade reaction of 14 and 16.