...
首页> 外文期刊>Acta Crystallographica, Section B. Structural Science >Neutron diffraction analysis of deuterium transfer in chiral beta-thiolactam formation in the crystalline state.
【24h】

Neutron diffraction analysis of deuterium transfer in chiral beta-thiolactam formation in the crystalline state.

机译:结晶状态下手性β-硫醇酰胺形成氘转移的中子衍射分析。

获取原文
获取原文并翻译 | 示例
           

摘要

Since N,N-dibenzyl-1-cyclohexenecarbothioamide is photo-isomerized to the optically active beta-thiolactam with the retention of the single-crystal form, the mechanism of chirality induction was identified by X-ray crystal structure analyses during the process of the reaction [Hosoya et al. (2002). Bull. Chem. Soc. Jpn, 75, 2147-2151]. In order to clarify the mechanism of hydrogen transfer in the reaction, the H atoms of the benzyl groups were replaced with deuterium atoms. The crystal structure after photoisomerization was analyzed by neutron diffraction. One of four deuterium atoms of the two benzyl groups is transferred to the C atom of the cyclohexene ring. The absolute configuration of the -C*HD- group (chiral methylene) in the photoproduct beta-thiolactam revealed that the deuterium atom occupies the equatorial position. This suggests that the deuterium atom is not transferred from the benzyl group of a neighbouring molecule, but from one of the benzyl groups within the molecule.
机译:由于N,N-二苄基-1-环己烯丙氨基噻嗪以与单晶形式保持在光学活性β-硫酰胺的光异常,因此通过X射线晶体结构分析鉴定了手性诱导的机制在过程中 反应[Hosoya等人。 (2002)。 公牛。 化学。 SOC。 JPN,75,2147-2151]。 为了阐明反应中氢转移的机理,用氘原子代替苄基的H原子。 通过中子衍射分析光异构化后的晶体结构。 两个苄基的四个氘原子中的一种转移到环己烯环的C原子中。 光调节β-ThiolActam中-C * HD-基团(手性亚甲基)的绝对构型显示氘原子占据赤道位置。 这表明氘原子不会从相邻分子的苄基转移,而是从分子内的其中一种苄基。

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