Mechanistic Studies of Copper(I)-Catalyzed Allylic Amination
作者:Radhey S. Srivastava、Nathan R. Tarver、Kenneth M. Nicholas
DOI:10.1021/ja0751072
日期:2007.12.1
novel Cu(I) complexes, [Cu(PhNO)3]PF6 (1) and [Cu(Et2NPhNO)3]PF6 (2); in 2 the copper atom is N-coordinated to the nitrosoarenes in a distorted trigonal planar geometry. Complex 1 is strongly implicated as a reactive intermediate in the Cu(I)-catalyzed allylic amination of olefins based on (i) its isolation from the catalytic reaction, (ii) its stoichiometric regioselective allylic amination of alpha-methyl
作者:Gregg A Hogan、August A Gallo、Kenneth M Nicholas、Radhey S Srivastava
DOI:10.1016/s0040-4039(02)02441-3
日期:2002.12
The copper(I) complex [Cu(CH3CN)4]PF6 catalyzes the allylic amination of alkenes by aryl hydroxylamine in fair to moderate yields. Unsymmetrical alkenes react with high regioselectivity with N-functionalization occuring at the less substituted vinylic carbon. Trapping experiments indicate that free PhNO is not an intermediate in these reactions.
2,4-DINITROPHENYLHYDROXYLAMINE: AN EFFICIENT AND MORE GENERAL REAGENT FOR IRON-CATALYZED ALLYLIC AMINATION
作者:Sumita Singh、Kenneth M. Nicholas
DOI:10.1081/scc-100105881
日期:2001.1
2,4-Dinitrophenylhydroxylamine (1) is an efficient reagent for the iron-catalyzed regioselective allylicamination of olefins. Moderate to excellent yields of N-DNP-N-allyl amines (2) are obtained resulting from introduction of the N-DNP group at the less substituted vinylic carbon with accompanying double bond transposition. N-alkylation of 2 and subsequent treatment with MeNH2 affords secondary N-alkyl-N-allyl