Structure-Directed Reversion in the π-Facial Stereoselective Alkylation of Chiral Bicyclic Lactams
作者:Ignacio Soteras、Oscar Lozano、Carmen Escolano、Modesto Orozco、Mercedes Amat、Joan Bosch、F. Javier Luque
DOI:10.1021/jo801665k
日期:2008.10.3
reversion observed in the benzyl alkylation of the enolate of oxazolopyrrolidinone. These findings point out that the delicate balance between factors that dictate the diastereoselectivity in the alkylation of chiral byciclic lactams can be unexpectedly altered by weak secondary interactions. The results presented here provide valuable guidelines to tune the selective preparation of enantiopure bioorganic