Iterative Multifunctionalization of Unactivated C−H Bonds in Piperidines by Way of Intramolecular Rh(II)-Catalyzed Aminations
作者:Sylvestre Toumieux、Philippe Compain、Olivier R. Martin
DOI:10.1021/jo702350u
日期:2008.3.1
Efficient stereocontrolled synthesis of di-, tri-, tetra-, and pentasubstituted piperidines from simple 2-sulfamoyloxymethyl piperidine derivatives has been performed by way of intramolecular Rh-catalyzed amination of saturated C-H bonds. In this process, the sulfamoyloxymethyl arm was directly or indirectly involved in the functionalization of every saturated methylene group of the piperidine ring at C-3, C-4, C-5, and C-6. Direct application to the total synthesis of iminosugars and related compounds demonstrated the synthetic potential of this strategy.