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
Copper(I)-Catalyzed Intramolecular Addition of N-Chloroamines to Double Bonds under Aprotic Conditions. Towards a Stereoselective Catalytic Radical Reaction
作者:Richard Göttlich
DOI:10.1055/s-2000-7605
日期:——
Copper(I) complexes catalyze the intramolecular addition of N-chloramines to carbon-carbon double bonds under neutral conditions, a reaction that proceeds via a metal complexed aminyl radical. A high diastereoselectivity is obtained in the cyclization step due to the sterically demanding copper complex.