Ruthenium-catalysed asymmetric transfer hydrogenation of N-(tert-butanesulfinyl)imines
作者:David Guijarro、Óscar Pablo、Miguel Yus
DOI:10.1016/j.tetlet.2009.07.044
日期:2009.9
l is a very efficient catalyst for the asymmetrictransferhydrogenation of (R)-N-(tert-butanesulfinyl)ketimines in isopropanol. By carefully removing all possible moisture from the reaction medium, chiral primary amines with very high optical purities (up to >99% ee) can be easily prepared in excellent yields by the diastereoselective reduction of the imines followed by removal of the sulfinyl group