Stereoselective Synthesis of Piperidines by Iridium-Catalyzed Cyclocondensation
作者:Tobias Sandmeier、Simon Krautwald、Erick M. Carreira
DOI:10.1002/anie.201706374
日期:2017.9.11
An iridium-catalyzed cyclocondensation of amino alcohols and aldehydes is reported. Intramolecular allylicsubstitution by an enamine intermediate and subsequent in situ reduction furnishes 3,4-disubstituted piperidines with high enantiospecificity and good diastereoselectivity. The modular approach and the broad functional group tolerance provide access to diverse piperidine derivatives, which were