[1] POLITECN MILAN, CONSIGLIO NAZL RICERCHE, CTR STUDIO SOSTANZE ORG NAT, IST CHIM, MILAN, ITALY
[2] UNIV MILAN, INST IND CHEM, MILAN, ITALY
[3] UNIV BOLOGNA, CONSIGLIO NAZL RICERCHE, INST ORG CHEM, LAB COMPOSTI CARBONIO CONTENENTI ETEROATOM, 4 BOLOGNA, ITALY