1. The Institute of Computational Chemistry and Catalysis, and Department of Chemistry; University of Girona; C/ Maria Aurèlia Capmany 69 17003 Girona Spain
2. Institute of Organic Chemistry and Biochemistry; Academy of Sciences of the Czech Republic; Flemingovo nám. 2 166 10 Prague Czech Republic
3. Departamento de Química Orgánica I; Facultad de Ciencias Químicas; Universidad Complutense de Madrid; Ciudad Universitaria s/n 28040 Madrid Spain
4. Institució Catalana de Recerca i Estudis Avancats; 08010 Barcelona Spain