1,2-Diazetidinones were prepared from (2R,3R)-epoxybutanoic acid via acidic one-pot deprotection-cyclization reaction and converted to the novel 5-azacarbapenams by an intramolecular Michael cyclization reaction.
1,2-Diazetidinones were prepared from (2R,3R)-epoxybutanoic acid via acidic one-pot deprotection-cyclization reaction and converted to the novel 5-azacarbapenams by an intramolecular Michael cyclization reaction.
1,2-Diazetidinones were prepared from (2R,3R)-epoxybutanoic acid via acidic one-pot deprotection-cyclization reaction and converted to the novel 5-azacarbapenams by an intramolecular Michael cyclization reaction.