... Issue. European Journal of Organic Chemistry. Volume 2004, Issue 4, pages 835–849, February 2004. ... Eur. J. Org. Chem., 2004: 835–849. ... 1 Physical Organic Chemistry Unit, Stratingh Institute, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands. 2 ...