Development of green and low-cost chiral oxidants for asymmetric catalytic hydroxylation of enals

A novel type of chiral oxidants are developed for efficient and enantioselective /3-hydroxylation reaction of enals. The chiral oxidants can be easily obtained from readily available and inexpensive substituted benzoic acids and chiral prolinols. A commercially accessible and inexpensive achiral NHC catalyst is used for this catalytic approach. /3-Hydroxyl esters bearing various substituents and substitution patterns are afforded as the final products in moderate to excellent yields and enantioselectivities.

Automated summary

A novel type of chiral oxidants has been developed for efficient and enantioselective /3-hydroxylation reaction of enals, using a commercially accessible and inexpensive NHC catalyst. Various /3-hydroxyl esters with different substituents and substitution patterns are obtained in moderate to excellent yields and enantioselectivities as the final products.