Zinca-ene-allene and zinc-enolate cyclization. Towards the synthesis of polysubstituted pyrrolidines
摘要:
The synthesis of polysubstituted pyrrolidines can be easily achieved in a diastereoselective and enantioselective way via the zinca-ene-allene and zinc-enolate cyclization. Copyright (C) 1996 Elsevier Science Ltd
Diastereoselective and Enantioselective Intramolecular Amino−Zinc−Enolate Carbometalation Reactions. A New Polysubstituted Pyrrolidines Synthesis
作者:Edwige Lorthiois、Ilane Marek、Jean F. Normant
DOI:10.1021/jo970813e
日期:1998.4.1
The amino-zinc-enolate cyclization allowed a new and straightforward route to polysubstituted pyrrolidines from simple starting materials. From this study, we have been able to determine, for the first time, the stereochemical influence of the substituents on the ring in the carbocyclization reaction. The diastereoselectivity thus obtained was explained by a chairlike amino-zinc-enolate transition state.