Starting from enantiopure 3,6-dihydro-2H-1,2-oxazines syn-1 we introduced an additional hydroxy group in a stereoselective fashion by a standard hydroboration/oxidation protocol. Under "regular" conditions substrate cont...
Bidentate Lewis acids were applied as catalysts for the inverse-electron-demand Diels-Alder (IEDDA) reaction of 1,2-diazines. The concept of catalysis is based on the coordination of the bidentate Lewis acid to both nitr...