Access to Optically Active 3-Aminopiperidines by Ring Expansion of Prolinols: Thermodynamic versus Kinetic Control
作者:Anne Cochi、Domingo Gomez Pardo、Janine Cossy
DOI:10.1002/ejoc.201101829
日期:2012.4
3-Aminopiperidines are of great interest because they can possess a wide range of biological activity depending on the nitrogen substituents. Different approaches their synthesis are presented and the most efficient is a ringexpansion of prolinols induced by XtalFluor-E (diethylaminodifluorosulfinium tetrafluoroborate) in the presence of tetrabutylammonium azide, via an aziridinium intermediate, followed