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Highly Enantioselective Construction of Hajos–Wiechert Ketone Skeletons via an Organocatalytic Vinylogous Michael/Stetter Relay Sequence

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posted on 12.04.2017, 18:19 by Zhi-Long Jia, Yao Wang, Chuan-Gang Zhao, Xiao-Hai Zhang, Peng-Fei Xu
A highly enantioselective supramolecular iminium-catalyzed vinylogous Michael addition/Stetter relay sequence has been developed. This transformation provided a series of Hajos–Wiechert-type fused bicyclic diones with three continuous stereogenic centers in good yields with excellent enantioselectivities. The obtained products can be easily transformed into other structures with potential synthetic value.

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