Molecules (Jun 2024)
PyBox–La(OTf)<sub>3</sub>-Catalyzed Enantioselective Diels–Alder Cycloadditions of 2-Alkenoylpyridines with Cyclopentadiene
Abstract
The PyBox–La(OTf)3-catalyzed enantioselective Diels–Alder cycloaddition of 2-alk-2-enoylpyridines with cyclopentadiene is realized, producing enantiopure disubstituted norbornenes, which possess four contiguous stereocenters and are biologically relevant structures in up to 92:8 dr and 99:1 er.
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