Bibliographic Details
| Title: |
Cu(I) β-Diketiminates for Alkene Aziridination: Reversible Cu -- Arene Binding and Catalytic Nitrene Transfer PhI==NTs. |
| Authors: |
Amisial, LaTasha D.1, Dai, Xuliang1, Kinney, R. Adam1, Krishnaswamy, Ammani1, Warren, Timothy H.1 thw@georgetown.edu |
| Source: |
Inorganic Chemistry. 10/18/2004, Vol. 43 Issue 21, p6537-6539. 3p. |
| Subjects: |
Copper compounds, Aromatic compounds, Chemical bonds, Nitrenes, Chemical reactions, Styrene |
| Abstract: |
β;-Diketiminato Cui-lutidine complexes [RMeNN]Cu(2,4-lutidine) (R = Me (4a), iPr (4b)) were prepared in high yield from Tl[RMeNN] and [CuBr(2,4-lutidine)2]2. Both 4a and 4b reversibly dissociate lutidine base in toluene to give [RMeNN]Cu(toluene) solvento complexes. A related base-free dicopper species {[Me2NN]Cu}2 (6) bridged via η²-binding of opposing N-aryl rings could be isolated by the addition of Tl[Me2NN] to CuBr. The lutidine precursors serve as precatalysts for the aziridination of alkenes with PhI=NTs. Styrene, β;-methylstyrene, and cyclooctene gave the highest yields (59-96%) with a low olefin to PhI=NTs ratio (3:1) and 5 mol % catalyst loading. [ABSTRACT FROM AUTHOR] |
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| Database: |
Engineering Source |
