平面性烯复合物,由R-卡沃衍生而来
Mikhail A Boym1,2, Roman A Pototskiy1, Evgeniya S Podyacheva1,2
1A. N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, 28 Vavilova str., Moscow, 119334, Russia. dsp@ineos.ac.ru.
研究人员从天然的R-carvone中合成了奇拉式环二烯. 这些被用来创建新的鲁复合物,它显示出C-H激活的潜力,但在反应中限制了立体选择性.
科学领域:
- 有机金属化学 有机金属化学
- 不对称的催化剂.
- 合成有机化学 合成有机化学
背景情况:
- 的配体和催化剂对于立体选择性合成至关重要.
- 复合物广泛用于催化,包括C-H激活.
- 开发新的奇拉性烯复合体可以扩大催化应用.
研究的目的:
- 为了合成新的平面 - 合体烯复合体.
- 研究这些复合体在C-H激活和相关反应中的催化活性.
- 为了评估由新的性催化剂介导的反应的立体选择性.
主要方法:
- 通过交叉合反应将天然的R-carvone转化为合的1-aryl-2-methyl-5-isopropyl-cyclohexadienes.
- 合成的二烯与RuCl3的反应,形成平面-合式复合体[(arene) RuCl2]2.2.
- 测试复合物的催化性能 [{1-Ph-2-Me-5-iPr-C6H3) RuCl2]2 在C-H激活和分子内子化合物插入中.
主要成果:
- 化环基被成功合成并与RuCl3发生反应,以产生平面-化复合体,产量为70-75%.
- 合成的性类似物[1-Ph-2-Me-5-iPr-C6H3) RuCl2]2,类似于[cymene) RuCl2]2,在促进C-H激活和分子内C-H插入方面表现出活性.
- 新复合体介导的催化反应产生了具有低立体选择性的产品.
结论:
- 从天然的R-carvone中可以有效地合成新的平面-奇拉性烯复合物.
- 这些复合物在关键的有机转化中表现出催化活性,如C-H激活.
- 需要进一步开发以增强这些合式催化剂的立体选择性.
更多相关视频
10:52Line Shape Analysis of Dynamic NMR Spectra for Characterizing Coordination Sphere Rearrangements at a Chiral Rhenium Polyhydride Complex
Published on: July 27, 2022
12:19Photogeneration of N-Heterocyclic Carbenes: Application in Photoinduced Ring-Opening Metathesis Polymerization
Published on: November 29, 2018
相关概念视频
Chirality at Nitrogen, Phosphorus, and Sulfur
A consequence of chirality is the need for enantiomeric resolution. While this is theoretically possible for all...
Prochirality
Radicals: Electronic Structure and Geometry
Accordingly, the structure of a trivalent radical lies between the geometries of carbocations and carbanions. An sp2-hybridized carbocation is trigonal planar, while an sp3-hybridized carbanion is trigonal pyramidal. Here, the difference in geometry is...
Reduction of Alkenes: Asymmetric Catalytic Hydrogenation
The metal catalyst used can be either heterogeneous or homogeneous. When hydrogenation of an alkene generates a chiral center, a pair of enantiomeric products is expected to form. However, an enantiomeric excess of one of the products can be facilitated using an enantioselective reaction or an...
Radical Halogenation: Stereochemistry
Halogenation to form a new chiral center:
Aromatic Hydrocarbon Cations: Structural Overview
Removing one hydrogen from the intervening CH2 group...
