... Chem., 2004, 2, 2461-2470 Show Compounds Show Chemical Terms. ... wits.ac.za; Fax: 27 + 11 + 717 6749; Tel: 27 + 11 + 717 6724 b Department of Chemistry, University of ... The organic layer was then dried with MgSO 4 , filtered through Celite, the solvent removed in vacuo and ...