Various primary 2-aminothiols have been prepared by a general and efficient method, in three steps, starting from commercially available 2-aminoalcohols and methyldithioacetate as a convenient source of sulfur. (C) 2008 Elsevier Ltd. All rights reserved.
US5610144A
申请人:——
公开号:US5610144A
公开(公告)日:1997-03-11
Configurational Flexibility of Epimeric β-Aminothioether-chelated Ruthenium(II) η<sup>6</sup>-Arene Complex Salts
作者:Immo Weber、Frank W. Heinemann、Walter Bauer、Ulrich Zenneck
DOI:10.1515/znb-2009-0117
日期:2009.1.1
so far. The relative diastereomer concentrations in solution depend mainly on the spatial requirements of the η6-arene ligand rather than on the thioether moiety. Diastereomer ratios and the absoluteconfigurations in solution were studied by NMR and CDspectroscopy. The spectroscopic results fit to the absolute X-ray crystal structure parameters determined for the diastereomers present in the crystalline
五种手性 β-氨基硫醚是通过基于文献方案的不同途径获得的。这些β-氨基硫醚中的三种与两种二-μ-氯-双氯[η6-芳烃]-钌(II)}衍生物反应,产生标题复合盐。复杂的阳离子表现出3个立体,即 钌和硫原子以及螯合配体骨架的手性苄基碳原子。钌和硫立体中心在平衡时差向异构化为四种 NMR 可区分的非对映异构体的混合物,但设计的手性苄基碳原子在迄今为止应用的所有条件下都是稳定的。溶液中的相对非对映体浓度主要取决于 η6-芳烃配体的空间要求,而不是硫醚部分。通过NMR和CD光谱研究了溶液中的非对映体比率和绝对构型。光谱结果符合为以结晶状态存在的非对映异构体确定的绝对 X 射线晶体结构参数。差向异构 β-氨基硫醚螯合钌 (II) η6-芳烃复合盐的图形摘要构型灵活性