A process for preparing 3-4-cis-β,β-(4)-substituted and 3-4-trans,β,α-(4)-substituted azetidinones is provided. Also provided are novel 4,4-disubstituted azetidinones.
提供了一种制备 3-4-顺式-β,β-(4)-取代的氮杂
环丁酮和 3-4-反式-β,α-(4)-取代的氮杂
环丁酮的工艺。此外,还提供了新型 4,4-二取代氮杂
环丁酮。