High π-Facial Selectivity Through Chelation of Magnesium Ions in the DMD Epoxidation of α,β-Unsaturated Imides with Chiral Pyrrolidinone Auxiliaries.

High π-Facial Selectivity Through Chelat

High π-Facial Selectivity Through Chelation of Magnesium Ions in the DMD Epoxidation of α,β-Unsaturated Imides with Chiral Pyrrolidinone Auxiliaries

✍ Waldemar Adam; Aimin Zhang 📂 Article 📅 2004 🏛 John Wiley and Sons 🌐 English ⚖ 143 KB

## Abstract High diastereoselectivity, but of the opposite sense, is observed in the epoxidation (DMD or __m__CPBA) of α,β‐unsaturated imides equipped with pyrrolidinone‐type chiral auxiliaries that bear either a hydroxymethyl or trityloxymethyl side chain. This unprecedented reversed π‐facial diff