690666-27-4Relevant academic research and scientific papers
C--H BOND AMINATION AND OLEFIN AZIRIDINATION WITH BETA-DIKETIMINATO COPPER CATALYSTS
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Page/Page column 8; 9, (2008/12/06)
One aspect of the present invention relates to a method for the transition metal (e.g., Cu(I)) mediated amidation of C-H bonds using electron-rich aliphatic azides. In certain embodiments, the methods are useful for the C-H insertion of nitrenes generated and stabilized by a β-diketiminato metal catalyst. In certain embodiments, said nitrenes are generated from organoazides, or by oxidation of the corresponding amine. Another aspect of the present invention relates to olefin aziridination using said β-diketiminato metal catalysts. In addition, the methods of the present invention include stereoselective C-H bond aminations and olefin aziridinatons. In certain embodiments, the methods are conducted in an aerobic environment. In certain embodiments, the present invention relates to the use of O2 as an oxidant, wherein water is the byproduct of oxidation; this fact avoids the generation of toxic byproducts and renders the methods atom economical.
DIKETIMINATO CU(I) AND CO(I) CARBENE CATALYSTS, AND CYCLOPROPANATION METHODS USING THEM
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Page/Page column 51, (2008/06/13)
The present invention described herein employs employs Cu(I) complexes of an electron-rich, bidentate N,N-donor ligand (P-diketiminates) that react with both heteroatomcontaining a-substituted diazomethanes and ary1diazomethanes to yield a unique metal-carbene complex stabilized by two metal fragments that selectively reacts with alkenes. These examples are the first of isolable Cu-carbene complexes that react with alkenes to give cyclopropanes. Furthermore, electron-rich, bidentate N,N-donor ligands can be designed to impart stereo- and enantio-selectivity in the cyclopropanation of alkenes with diazoalkanes.
[Me2NN]Co(η6-toluene): O=O, N=N, and O=N Bond Cleavage Provides β-Diketiminato Cobalt μ-Oxo and Imido Complexes
Dai, Xuliang,Kapoor, Pooja,Warren, Timothy H.
, p. 4798 - 4799 (2007/10/03)
The synthesis and structure of a novel β-diketiminato Co(I) arene adduct [Me2NN]Co(η6-toluene) (2) are described, that serves as a synthon to the reactive, "naked" 12-electron [Me2NN]Co fragment via loss of toluene in its
