作者:Christopher J. Adams、Robin B. Bedford、Emma Carter、Nicholas J. Gower、Mairi F. Haddow、Jeremy N. Harvey、Michael Huwe、M. Ángeles Cartes、Stephen M. Mansell、Carla Mendoza、Damien M. Murphy、Emily C. Neeve、Joshua Nunn
DOI:10.1021/ja303250t
日期:2012.6.27
Herein we demonstrate both the importance of Fe(I) in Negishi cross-coupling reactions with arylzinc reagents and the isolation of catalytically competent Fe(I) intermediates. These complexes, [FeX-(dpbz)(2)] [X = 4-tolyl (7), Cl (8a), Br (8b); dpbz = 1,2-bis(diphenylphosphino)benzene], were characterized by crystallography and tested for activity in representative reactions. The complexes are low-spin with no significant spin density on the ligands. While complex 8b shows performance consistent with an on-cycle intermediate, it seems that 7 is an off-cycle species.
Harbron, Stephen K.; Higgins, Simon J.; Levason, William, Inorganic Chemistry, 1986, vol. 25, # 11, p. 1789 - 1794
作者:Harbron, Stephen K.、Higgins, Simon J.、Levason, William、Feiters, Martinus C.、Steel, Andrew T.