• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Chemistry: A European journal >Prebiotic-Like Condensations of Cyanamide and Glyoxal: Revisiting Intractable Biotars
【24h】

Prebiotic-Like Condensations of Cyanamide and Glyoxal: Revisiting Intractable Biotars

机译：氰化物和乙二醛的类似益生元的缩合：令人难忘的生物塔。

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

We report a detailed investigation into the nature of products that are generated by the reactions of cyanamide and glyoxal, two small molecules of astrochemical and prebiotic significance, under different experimental conditions. The experimental data suggest that the formation of oligomeric structures is related in part to the formation of insoluble tholins in the presence of oxygen-containing molecules. Although oligomerization proceeds well in water, product isolation turned out to be impractical. Instead, solid precipitates were obtained easily in acetone. Crude mixtures have been thoroughly scrutinized by spectroscopic methods, in particular NMR and mass spectroscopy (ESI mode), which are all consistent with the generation of a few functional groups that are embedded into regular chains of five-and six-membered rings, thereby pointing to a supramolecular organization. Three different models of cross-condensation and chain growth are suggested. These synthetic explorations provide further insights into the formation of complex organic matter in interstellar scenarios and extraterrestrial bodies that might have played a pivotal role in chemical evolution.
机译：我们报告了在不同的实验条件下，由氰酰胺和乙二醛（两个具有天化学和益生元意义的小分子）反应生成的产品的性质的详细调查。实验数据表明，在存在含氧分子的情况下，低聚结构的形成部分与不溶性索林的形成有关。尽管低聚在水中进行得很好，但事实证明产物分离是不切实际的。相反，在丙酮中容易获得固体沉淀物。粗混合物已通过光谱方法（尤其是NMR和质谱法（ESI模式））进行了彻底检查，这些方法均与嵌入五元和六元环规则链中的几个官能团的产生相一致，从而指出超分子组织。提出了三种不同的交叉冷凝和链增长模型。这些合成的探索提供了关于星际场景和外星体中复杂有机物质形成的进一步见解，这些物质可能在化学演化中发挥了关键作用。

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