791069-13-1Relevant articles and documents
Cu(I) β-diketiminates for alkene aziridination: Reversible Cu-arene binding and catalytic nitrene transfer from PhI=NTs
Amisial, LaTasha D.,Dai, Xuliang,Kinney, R. Adam,Krishnaswamy, Ammani,Warren, Timothy H.
, p. 6537 - 6539 (2004)
β-Diketiminato Cu(I)-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.