Dearomatization Reactions of N-Heterocycles Mediated by Group 3 Complexes
作者:Kevin L. Miller、Bryan N. Williams、Diego Benitez、Colin T. Carver、Kevin R. Ogilby、Ekaterina Tkatchouk、William A. Goddard、Paula L. Diaconescu
DOI:10.1021/ja908489p
日期:2010.1.13
ligand are reactive toward aromatic N-heterocycles by mediating their coupling and, in a few cases, the cleavage of their C-N bonds. When these complexes reacted with 2,2'-bipyridine or isoquinoline, they facilitated the alkyl migration of the benzyl ligand onto the pyridine ring, a process accompanied by the dearomatization of the N-heterocycle. The products of the alkyl-transfer reactions act as hydrogen
Group 3 Metal Complexes of Radical-Anionic 2,2′-Bipyridyl Ligands
作者:Bryan N. Williams、Wenliang Huang、Kevin L. Miller、Paula L. Diaconescu
DOI:10.1021/ic101493k
日期:2010.12.20
A new method for generating group3 metal complexes containing radical-anionic 2,2′-bipyridyl (bipy) ligands is described that relies on hydrogen-atom abstraction from dearomatized biheterocyclic complexes. This method does not involve electron transfer to neutral 2,2′-bipyridyl or salt metathesis between the lithium salt of the 2,2′-bipyridyl radical anion and group3 metal halides. The new metal