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Chiral Phosphine Oxide–Sc(OTf)3 Complex Catalyzed Enantioselective Bromoaminocyclization of 2‑Benzofuranylmethyl N‑Tosylcarbamates. Approach to a Novel Class of Optically Active Spiro Compounds

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posted on 2015-12-04, 00:00 authored by Zequan Li, Yian Shi
An efficient enantioselective bromoaminocyclization of 2-benzofuranylmethyl N-tosylcarbamates catalyzed by a chiral phosphine oxide–Sc­(OTf)3 complex is described. A wide variety of optically active spiro benzofuran oxazolidinones can be obtained with high enantioselectivities.

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