... Volume. Page. ... Molecules 2008, 13(1), 149-156; doi:10.3390/molecules13010149. ... mL); solvents were removed under vacuum and products washed with diethyl ether (4x20 mL) to be finally dried at 90°C under vacuum (3 h). All products were analyzed by 1 H- and 13 C-NMR, IR ...