Asymmetric addition reactions of Grignard reagents to chiral 2-trifluoromethyl tert-butyl (Ellman) sulfinimine–ethanol adducts
作者:Scott D. Kuduk、Christina Ng Di Marco、Steven M. Pitzenberger、Nancy Tsou
DOI:10.1016/j.tetlet.2006.01.154
日期:2006.4
The addition of Grignard reagents to chiral trifluoromethyl tert-butyl sulfinimine–ethanol adducts affords protected trifluoromethylamines in high yields with good to excellent diastereoselectivities. The stereochemical outcome of the addition is opposite to that expected via a chelation controlled transition state.