Reductions of Challenging Organic Substrates by a Nickel Complex of a Noninnocent Crown Carbene Ligand
摘要:
The first crown-tetracarbene complex of Ni(II) has been prepared, and its crystal structure determined. The complex can be reduced by Na/Hg, with an uptake of two electrons. The reduced complex reductively cleaves arenesulfonamides, including those derived from secondary aliphatic amines, and effects Birch reduction of anthracenes as well as reductive cleavage of stilbene oxides. Computational studies show that the orbital that receives electrons upon reduction of the complex 2 is predominantly based on the crown carbene ligand and also that the HOMO of the parent complex 2 is based on the ligand.
Metal-ammonia ring reduction of aromatic carboxylic acid esters
作者:Peter W. Rabideau、Donna M. Wetzel、D. Michael Young
DOI:10.1021/jo00183a014
日期:1984.5
RABIDEAU, P. W.;WETZEL, D. M.;YOUNG, D. M., J. ORG. CHEM., 1984, 49, N 9, 1544-1549
作者:RABIDEAU, P. W.、WETZEL, D. M.、YOUNG, D. M.
DOI:——
日期:——
Reductions of Challenging Organic Substrates by a Nickel Complex of a Noninnocent Crown Carbene Ligand
作者:Neil J. Findlay、Stuart R. Park、Franziska Schoenebeck、Elise Cahard、Sheng-ze Zhou、Leonard E. A. Berlouis、Mark D. Spicer、Tell Tuttle、John A. Murphy
DOI:10.1021/ja107703n
日期:2010.11.10
The first crown-tetracarbene complex of Ni(II) has been prepared, and its crystal structure determined. The complex can be reduced by Na/Hg, with an uptake of two electrons. The reduced complex reductively cleaves arenesulfonamides, including those derived from secondary aliphatic amines, and effects Birch reduction of anthracenes as well as reductive cleavage of stilbene oxides. Computational studies show that the orbital that receives electrons upon reduction of the complex 2 is predominantly based on the crown carbene ligand and also that the HOMO of the parent complex 2 is based on the ligand.