1. Department of Organic Chemistry, Faculty of Chemical Technology, University “Politehnica” of Bucharest, Splaiul Independentei 313, 77206 Bucharest, Romania, LARTIC University of Nice-Sophia Antipolis, Parc Valrose 06108 Nice Cedex, France, and ITODYS, University of Paris 7 - Denis Diderot, 1 Rue Guy de la Brosse, 75005 Paris, France