... Michael Bech Sommer,*J Mikael Begtrup,*i* and Klaus Peter Bergesd H. Lundbeck AIS, Ottiliaoej 7, DK 2500 Copenhagen, Denmark, and Department of Organic Chemistry, Technical University of Denmark, DK-2800 Lyngby, Denmark Received ... Page 2. 4818 J. Org ... Chem., Vol. ...