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Alkoxyphenyliminoiodanes: Highly Efficient Reagents for the Catalytic Aziridination of Alkenes and the Metal‐Free Amination of Organic Substrates
作者:Akira Yoshimura、Victor N. Nemykin、Viktor V. Zhdankin
DOI:10.1002/chem.201102265
日期:2011.9.12
Owing to the presence of the ortho‐substituent on the phenyl ring, these new iminoiodanes have excellent solubility in organic solvents and are efficient reagents for the catalytic aziridination of alkenes or the metal‐free tosylamination of organic substrates (see scheme, Ts=tosyl).
Investigations in the Transition Metal Catalyzed Aziridination of Olefins, Amination, and Other Insertion Reactions with Bromamine-T as the Source of Nitrene
作者:Bhanu M. Chanda、Renu Vyas、Ashutosh V. Bedekar
DOI:10.1021/jo000013v
日期:2001.1.1
Investigations into the transition metal catalyzed aziridination of olefins with Bromamine-T as a new source of nitrene is presented in this account. Comparison of Chloramine-T and Bromamine-T in this reaction indicates that the latter is superior as the source of nitrene. Systematic study with several transition metal based catalysts suggests that Cu-halides are the best catalysts. A first report
Pyridinium Hydrobromide Perbromide: A Versatile Catalyst for Aziridination of Olefins Using Chloramine-T
作者:Sayyed Iliyas Ali、Milind D. Nikalje、A. Sudalai
DOI:10.1021/ol9900966
日期:1999.9.1
[reaction: see text] Pyridiniumhydrobromideperbromide (Py x HBr3) catalyzes effectively the aziridination of electron-deficient as well as electron-rich olefins using Chloramine-T (N-chloro-N-sodio-p-toluenesulfonamide) as a nitrogen source to afford the corresponding aziridines in moderate to good yields.
[反应:查看文本]氢溴酸吡啶鎓过溴化物(Py x HBr3)使用氯胺T(N-氯-N-sodio-p-甲苯磺酰胺)有效催化缺电子和富电子烯烃的叠氮化得到中等至良好产率的相应氮丙啶。
Aziridination of olefins mediated by a [CuI(L1)2]+ complex via nitrene transfer reaction
aziridination of alkenes is dominated in the literature compared to any other metal catalysts. This catalytic reaction is believed to be mediated by the elusive Cu-nitrene intermediate. However, analytical characterization of this intermediate is extremely scarce in the literature. In this article, we intend to shed the light on the electronic structure of the Cu-nitrene intermediate. The reaction of Cu(I) salt
与任何其他金属催化剂相比,铜催化的烯烃的氮丙啶化在文献中占主导地位。这种催化反应被认为是由难以捉摸的铜氮烯中间体介导的。然而,该中间体的分析表征在文献中极为稀缺。在本文中,我们打算阐明 Cu-氮烯中间体的电子结构。Cu(I) 盐在氧化还原活性二齿席夫碱配体 (C 21 H 20 N 2 ; L1) 存在下的反应导致我们分离出分子式为 [Cu(L1) 的单体铜 (I) 配合物) 2 ]ClO 4。2C 6 H 6 ( 1),这是结构特征。在 (N-(对甲苯磺酰基)亚氨基)苯基碘烷 (PhINTs)的存在下, 1充当一种极好的催化剂,可促进氮烯基团转移到各种烯烃上。通过添加 PhINTs 由1生成的中间体在 832.3079 g/mol 处显示m / z峰,这对应于分子式为 [(L1) 2 Cu II -NTs] +的中间体的 M+ 离子峰(其中 Ts = 甲苯磺酰)。此外,基于详细的实验研究(原位UV-Vis
Oxa‐TriQuinoline: A New Entry to Aza‐Oxa‐Crown Architectures**
作者:Toi Kobayashi、Naoya Kumagai
DOI:10.1002/anie.202307896
日期:2023.8.7
oxa-TriQuinoline (o-TQ) has been synthesized which features a semi-rigid N3O3 aza-oxa-crown architecture and is structurally chimeric to crown ethers and porphyrins. o-TQ has been shown to act as a new tridentate nitrogen ligand and adopt a bowl shape to capture a CuI cation. The copper complex exhibits aggregation-induced emission and can be used for supramolecular complexation and catalysis.
合成了15元大环氧杂三喹啉(o-TQ),其具有半刚性N 3 O 3氮杂氧杂冠结构,并且在结构上与冠醚和卟啉嵌合。o-TQ 已被证明可以作为一种新的三齿氮配体,并采用碗形来捕获 Cu I阳离子。铜配合物表现出聚集诱导发射,可用于超分子络合和催化。