Reverse Cope elimination reactions. 2. Application to synthesis
摘要:
Intramolecular addition of N,N-disubstitute hydroxylamines to unactivated olefins was used to prepare an indolizine, a pyrrolo[2,1-a]isoquinoline, a 1,8-diazaspiro[4.5]decane, a cyclopenta[b]pyrrole, and an isoindoline. A pyrrolizine and a 1-azabicyclo[2.2.1] heptane were synthesized from acyclic precursors by two consecutive reverse Cope elimination reactions.
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