Bridged (β-alkoxyalkyl)CoIII(salen) complexes by intramolecular alkoxycobaltation of unactivated alkenes: new models for coenzyme B12
作者:Rolf Blaauw、Irene E. Kingma、Jan H. Laan、Juul L. van der Baan、Sijbe Balt、Martinus W. G. de Bolster、Gerhard W. Klumpp、Wilberth J. J. Smeets、Anthony L. Spek
DOI:10.1039/b000196l
日期:——
but-2-en-1-yl (6c), but-3-en-1-yl (6d)] react with oxygen and alcohols to give organocobalt(III) complexes containing a β-alkoxy-substituted three- or four-carbon bridge between cobalt and the equatorial ligand. NMR and UV–VIS spectroscopic studies show that product formation is a three-stage process involving (1) oxidation of cobalt(II) to produce an (alkoxo)cobalt(III) complex, (2) intramolecular interaction