The first examples of cyclizations of a glycal with enamines leading to oxa-aza bicyclononene scaffolds

Glycals undergo smooth coupling with β-enaminoketones and β-enaminoesters generated in situ from 1,3-dicarbonyl compounds and arylamines in the presence of 10 mol % of InCl3 in refluxing dichloroethane to produce oxa-aza bicyclononene scaffolds in excellent yields with high selectivity. The use of InCl3 makes this protocol simple, convenient and easy to scale-up.