Copper-catalyzed highly diastereoselective cross-dehydrogenative coupling between 8-hydroxyisochromanes and 1,3-dicarbonyl compounds†
Abstract
Herein, a novel copper-catalyzed highly diastereoselective cross-dehydrogenative coupling reaction is reported. A broad range of 1,3-dicarbonyl compounds and 8-hydroxyisochromanes are applicable to this methodology, affording tricyclic chromane products in moderate to high yields with continuous stereocenters identical to natural penicitrinols.