Stereoselective Construction of Highly Functionalized Azetidines via a [2 + 2]-Cycloaddition
作者:Yang Ye、Hua Wang、Renhua Fan
DOI:10.1021/ol100885f
日期:2010.6.18
A facile stereoselective synthesis of highly functionalized azetidines from a novel [2 + 2]-cycloaddition of 2-aminomalonates to chalcones Is reported. The desired four-membered ring construction proceeded via a grind-promoted solvent-free Michael addition and a PhIO/Bu4NI mediated oxidative cyclization and afforded azetidines in moderate to good yields with excellent diastereoselectivities.