Highly efficient, base-catalysed, intramolecular hydroamination of non-activated olefins
作者:Coralie Quinet、Pierre Jourdain、Christophe Hermans、Ali Ates、Isabelle Lucas、István E. Markó
DOI:10.1016/j.tet.2007.11.066
日期:2008.2
The intramolecularhydroamination of a large variety of non-activated alkenes can be efficiently catalysed by small amounts of lithium bases, providing smoothly and in high yields the corresponding five- and six-membered ring heterocycles. Fused and bridged bicyclic amines, of varying ring sizes, can be readily prepared either by a sequential hydroamination process or by a tandem, double addition reaction
One-Pot Synthesis of 3-Azido- and 3-Aminopiperidines by Intramolecular Cyclization of Unsaturated Amines
作者:Gerardo X. Ortiz、Bora Kang、Qiu Wang
DOI:10.1021/jo4022666
日期:2014.1.17
A highly efficient one-pot synthesis of 3-azidopiperidines has been achieved by an intramolecularcyclization of unsaturated amines that allows for the nucleophilic installation of an azide moiety. This method unlocks the versatile employment of the azide functionality in the preparation and biological studies of piperidine-containing structures. This strategy has been expanded for the direct incorporation
Efficient Intramolecular Hydroamination of Unactivated Alkenes Catalysed by Butyllithium
作者:Ali Ates、Coralie Quinet
DOI:10.1002/ejoc.200300058
日期:2003.5
In this communication, we wish to report some preliminary results demonstrating, for the first time, that intramolecular hydroamination of unactivated alkenes can be performed efficiently using small quantities of nBuLi as the pre-catalyst. ((C) Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003
Copper-Catalyzed Radical Cascade Annulation for the Preparation of Difluorinated Pyrrolidines and Piperidines
作者:Olivier Riant、Michela Maria Marchese、Sebastian Strähler、Lucian Ghiba
DOI:10.1055/a-2004-6031
日期:——
In this work, we developed a one-pot, copper-catalyzed aminodifluoroalkylation of enylaniline derivatives. This approach allows the catalytic construction of a broad range of pyrrolidines and piperidines substituted with a gem-difluoro moiety.
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.