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.
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
Cyclisation of Unsaturated<i>N</i>-Chloroamines under Acidic Conditions: A Polar Reaction via Chloronium Ions
作者:Richard Göttlich、Michael Noack、Stefanie Kalsow
DOI:10.1055/s-2004-822907
日期:——
Unsaturated N-chloroamines cyclise under acidic conditions without addition of a starter for a radical reaction. Therefore it can be concluded that, under the conditions published to date in the literature, the reaction at least partially proceeds via a polar reaction mechanism rather than via free radicals.
An Efficient Synthesis of Fluorinated Azaheterocycles by Aminocyclization of Alkenes
作者:Hai-Tsang Huang、Tyler C. Lacy、Barbara Błachut、Gerardo X. Ortiz、Qiu Wang
DOI:10.1021/ol4003866
日期:2013.4.19
A general and efficient approach to important fluorinated azaheterocycles has been developed by incorporating nucleophilic fluorination into alkene difunctionalization. This intramolecular aminofluorination transformation of alkenes has been achieved via the aminocyclization of reactive unsaturated N-iodoamines, which can be generated in situ from either unsaturated N-chloramines or their amine precursors in a one-pot protocol.
Haleja, Juho; Goettlich, Richard, Chemical Communications, 2002, # 7, p. 720 - 721