Synthesis of chiral vicinal C2 symmetric and unsymmetric bis(sulfonamide) ligands based on trans-1,2-cyclohexanediamine by aminolysis of N-tosylaziridines
作者:Alakesh Bisai、B.A. Bhanu Prasad、Vinod K. Singh
DOI:10.1016/j.tetlet.2005.09.089
日期:2005.11
ring opening of N-tosylaziridines with aliphatic amines can be efficiently catalyzed by lithium perchlorate to provide derivatives of the trans-1,2-diamine in high yields. The reaction was used in desymmetrization of several cyclic N-tosylaziridines using chiral amines. Using this strategy, an efficient synthesis of chiral vicinal C2 symmetric bis(sulfonamide) and unsymmetrical bis(sulfonamide) ligands
高氯酸锂可以有效地催化N-甲苯磺酰基氮丙啶与脂肪族胺的开环,从而以高收率提供反式-1,2-二胺的衍生物。该反应被用于使用手性胺的几种环状N-甲苯磺酰氮丙啶的不对称化。利用这种策略,开发了基于反式-1,2-环己二胺的手性邻位C 2对称双(磺酰胺)和非对称双(磺酰胺)配体的有效合成方法。