Functionalised pyrrolidinones derived from (S)-pyroglutamic acid by cycloaddition reactions
- The α,β-unsaturatcd bicyclic lactams 3a,c, prepared from (S)-pyroglutamic acid, are useful substrates for cycloaddition reactions, giving excellent regio- and diastereocontrol; however, lactam 3c has very superior reactivity with several dienes and dipoles under mild reaction conditions.
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