Highly Flexible Synthesis of Chiral Azacycles via Iridium-Catalyzed Hydrogenation
作者:J. Johan Verendel、Taigang Zhou、Jia-Qi Li、Alexander Paptchikhine、Oleg Lebedev、Pher G. Andersson
DOI:10.1021/ja103901e
日期:2010.7.7
A range of saturated chiral azacycles has been prepared in high yield and with high selectivity from simple starting materials. A modular approach with ring-closing metathesis as a keystep was used to produce a number of five-, six-, and seven-membered cyclic alkenes. Asymmetrichydrogenationcatalyzed by N,P-ligated iridium complexes gave saturated azacycles in high optical purity. This methodology