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介面电场对由Rh氨酸催化碳反应的影响
Craig F Gorin1, Eugene S Beh, Quan M Bui
1Department of Chemistry, Stanford University, Stanford, California 94305, USA.
Journal of the American Chemical Society
|July 11, 2013
概括
接口电场控制 Rh 氨酸催化反应. 将电压应用于介电面会改变产品比率,证明了使用电场调整化学选择性的新方法.
科学领域:
- 催化剂是一种催化剂.
- 电化学 电化学 电化学
- 有机化学 有机化学
背景情况:
- 甲基氨酸通过碳化合物中间体催化分子内反应.
- 接口电场可以影响化学反应路径和产品选择性.
- 控制反应选择性对于高效的合成至关重要.
研究的目的:
- 为了研究界面电场对Rh氨酸催化分子内反应的影响.
- 为了探索产品比率的调制 (cyclopropanation与插入) 应用电压.
- 了解介电表面化学在场诱导选择性中的作用.
主要方法:
- 使用的电极涂上介电层作为反应容器壁.
- 在介电-电解质接口上局部化Rh氨酸催化剂.
- 通过将电压应用于电极和分析的产品比率来改变接口电荷密度.
主要成果:
- 在没有电压的情况下,循环和插入产品的比率大约为10:1.
- 在TiO2表面上,施加的电压通过抑制插入产品,使该比率提高到100:1以上.
- 在Al2O3或基酸盐表面上,电压使该比率降至1:2,有利于插入产品.
结论:
- 接口电场有效地控制Rh氨酸催化反应的选择性.
- 观察到的选择性变化取决于介电表面化学和应用电压.
- 本文介绍了一种使用电场调整催化选择性的方法,在合成中具有潜在的应用.
相关概念视频
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01:26Thermal and Photochemical Electrocyclic Reactions: Overview
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