Samarium Diiodide-Induced Asymmetric Synthesis of Optically Pure Unsymmetrical Vicinal Diamines by Reductive Cross-Coupling of Nitrones with <i>N</i>-<i>tert</i>-Butanesulfinyl Imines
作者:Yu-Wu Zhong、Ming-Hua Xu、Guo-Qiang Lin
DOI:10.1021/ol048444d
日期:2004.10.1
[reaction: see text] An efficient method for the preparation of opticallypure unsymmetrical vicinal diamines by the SmI(2)-induced reductive cross-coupling of nitrones with chiral N-tert-butanesulfinyl imines was developed. This is the first successful example of the highly diastereoselective and enantioselective cross-coupling between two different imine species. It provides a straightforward access