单基 ((imidazolin-2-iminato) 乙化物复合物:合成和应用在化物的催化二聚化中
Isabell S R Karmel1, Natalia Fridman, Matthias Tamm
1Schulich Faculty of Chemistry, Institute of Catalysis Science and Technology, Technion - Israel Institute of Technology , Technion City, 32000 Israel.
合成和表征了具有伊米达林-2-胺联体的新型活性化物复合物. 这些和化合物在提申科反应中表现出催化活性,而复合物表现出更高的效率,特别是在具有挑战性的基质上.
科学领域:
- 有机金属化学 有机金属化学
- 协调化学 协调化学
- 催化剂是一种催化剂.
背景情况:
- 乙胺化学对于理解基本的结合和反应性至关重要.
- 伊米达佐林-2-胺配体为金属协调提供独特的电子特性.
- 提申科反应是从化物合成的关键转化.
研究的目的:
- 为了合成新型的单质 (imidazolin-2-iminato) 乙化物 (IV) 复合物.
- 为了研究这些活性化物复合物的结构和电子特性.
- 为了评估他们在提申科反应中的催化性能.
主要方法:
- 在imidazolin-2-imines和actinide金属循环之间进行质子分解反应.
- 单晶X射线衍射用于结构阐明.
- 使用甲和各种亚利法/芳香类化物进行的催化研究.
主要成果:
- 在高产量中成功合成和复合物[(Im(R) N) An(N{SiMe3) 2} 3 .
- 结构分析揭示了An-N债券中强烈的电子捐赠和显著的π-特征.
- 复合物 (6-8) 在提申科反应中表现出比同类 (3-5) 更高的催化活性,其中复合物8是最活跃的.
- 复合物8显示了前所未有的反应性与循环和分支亚利法性化物,即使在室温下.
- 综合体8通过交叉的提申科反应实现了非对称替代的选择性合成,产量高 (80-100%).
结论:
- 单基 ((imidazolin-2-iminato) 乙化物 ((IV) 复合物是容易获得的,并且结构上是明确的.
- 这些复合物作为提申科反应的有效催化剂,特别是衍生物.
- 这些发现为在选择性有机转化中利用活性化物复合物开辟了道路.
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