with the existing aminohydroxylation methods. It also provides valuable amino alcohol building blocks with regio- and stereochemical arrays that are complementary to known methods. A set of practical synthetic procedures for the iron-catalyzed intermolecular olefin aminohydroxylation reactions in gram scale is reported. In these transformations, a bench-stable functionalized hydroxylamine is applied
Synthesis, crystal structure and reactivity studies of iron complexes with pybox ligands
作者:Tao Chen、Limin Yang、Dirong Gong、Kuo-Wei Huang
DOI:10.1016/j.ica.2014.08.050
日期:2014.11
Iron(II) complexes, [Fe(2,6-bis(4,4-dimethyl-1,3-oxazolin-2-yl)pyridine)Cl-2] ((Fe(Me-2-pybox)Cl-2), 3) and [Fe(2,6-bis(4,4-diphenyl-1,3-oxazolin-2-yl)pyridine)Cl-2] ((Fe(Ph-2-pybox)Cl-2), 4), have been synthesized and characterized by X-ray crystallographic analysis. Upon treatment of complex 3 with silver triflate and 4 with acetonitrile, [Fe(Me-2-pybox)(CH3CN)OTf2] (5) and [Fe(Ph-2-pybox)(CH3CN)(2)Cl][FeCl3] (6) were obtained, respectively. The bulkier phenyl substitutes were found not only to cause the elongation of the N-Fe bonds but also influence the reactivity of the Fe center. (C) 2014 Elsevier B.V. All rights reserved.
Iron(II)-Catalyzed Intermolecular Amino-Oxygenation of Olefins through the N–O Bond Cleavage of Functionalized Hydroxylamines
作者:Deng-Fu Lu、Cheng-Liang Zhu、Zhen-Xin Jia、Hao Xu
DOI:10.1021/ja508057u
日期:2014.9.24
An iron-catalyzed diastereoselective intermolecular olefin amino-oxygenation reaction is reported, which proceeds via an iron-nitrenoid generated by the N–O bondcleavage of a functionalized hydroxylamine. In this reaction, a bench-stable hydroxylamine derivative is used as the amination reagent and oxidant. This method tolerates a range of synthetically valuable substrates that have been all incompatible
One mononuclear FeII complex displays a structural phase transition and a multi-induced spin-crossover behavior mediated by heat, light, pressure and solvent.