Rapid synthesis of substituted pyrrolines and pyrrolidines by nucleophilic ring closure at activated oximes
作者:Nandkishor Chandan、Amber L. Thompson、Mark G. Moloney
DOI:10.1039/c2ob26423d
日期:——
Substituted pyrrolines are available by ringclosure initiated by direct nucleophilic attack of stabilized enolates at the nitrogen of oximes activated with a leaving group, in a process which effectively out-competes the more usual Beckmann rearrangement. Subsequent reduction provides diastereoselective access to the corresponding pyrrolidines. This provides a rapid route to saturated heterocyclic