Copper(I)-Catalyzed Intramolecular Addition of N-Chloroamines to Double Bonds under Aprotic Conditions. Towards a Stereoselective Catalytic Radical Reaction
Samarium(II)-iodide catalysed addition of N -chloroamines to double bonds, an iodide-catalysed reaction
作者:Richard Göttlich、Michael Noack
DOI:10.1016/s0040-4039(01)01620-3
日期:2001.10
samarium(II)-iodide catalysis to the corresponding piperidines. These conditions allow the complete rearrangement of 2-(chloromethylpyrrolidines), the proposed primary products of the reaction, via an aziridinium ion to the corresponding 3-chloro-piperidines. The reaction does not seem to proceed via free radicals, as a radical cascade cyclisation could not be observed. Therefore not the samarium(II), but
Umpolung Amination: Nickel-Catalyzed Coupling Reactions of <i>N,N</i>-Dialkyl-<i>N</i>-chloroamines with Diorganozinc Reagents
作者:Timothy J. Barker、Elizabeth R. Jarvo
DOI:10.1021/ja907038b
日期:2009.11.4
N,N-Dialkyl-N-chloroamines are an effective source of electrophilic nitrogen for nickel-catalyzed coupling with diarylzinc reagents. A variety of N-chloroamines as well as organozinc reagents react smoothly under the reaction conditions. A one-pot procedure that circumvents the need to isolate the N-chloroamines is described.
Iodide-Catalysed Cyclization of Unsaturated N-Chloroamines: A New Way to Synthesise 3-Chloropiperidines