Keywords
azetidin-2-ones
chemodivergent synthesis
dehydrobromination
diastereomers
α-methylidene-β-lactams
β-bromomethacryloylamides
β-lactams
Abstract
Depending on the base used, reactions of 2,3-dibromo-2-methyl-N-[(1R)-1-phenylethyl]propanamide with DBU, ButOK and NaH in THF lead to β-bromomethacryloylamides, α-methylidene-β-lactam and azetidin-2-ones, respectively.
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