...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Bulletin of the Chemical Society of Japan >Optically Active Seleninic Acid:Isolation,Absolute Configuration,Stability,and Chiral Crystallization
【24h】

Optically Active Seleninic Acid:Isolation,Absolute Configuration,Stability,and Chiral Crystallization

机译：旋光性硒酸：分离，绝对构型，稳定性和手性结晶

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Each optical isomer of methaneseleninic acid (la) was isolated as chiral crystals by recrystallization from meth-anol/toluene.The absolute configuration of one of the enantiomers was determined by X-ray crystallographic analysis,and the relationship between the absolute configuration and the circular dichroism spectra of la was clarified.The optically active seleninic acid (R)-la was stable toward racemization in the solid state,although it racemized very rapidly in solution.Each enantiomer of la was obtained in bulk by chiral crystallization in the presence of a seed crystal or chiral solvents.The absolute configuration of optically active methanesulfinic acid (4) was also assigned by comparing its circular dichroism spectra with those of la.
机译：通过从甲醇/甲苯中重结晶，分离出甲烷硒酸（la）的每种旋光异构体，形成手性晶体。通过X射线晶体学分析确定一种对映异构体的绝对构型，并确定其与环状结构的关系。澄清了la的二向色光谱。旋光性硒酸（la）-la在固态下对消旋稳定，尽管在溶液中消旋非常迅速。在a的存在下通过手性结晶大量获得了la的每个对映异构体还通过将其圆二色性光谱与la的圆二色性光谱进行比较，确定了光学活性甲亚磺酸（4）的绝对构型。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号