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Journal articles on the topic 'Copper catalysts. Olefines'

Author: Grafiati

Published: 4 June 2021

Last updated: 5 February 2022

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1

Sirimanne, S. R., та S. W. May. "Interaction of non-conjugated olefinic substrate analogues with dopamine β-monooxygenase: catalysis and mechanism-based inhibition". Biochemical Journal 306, № 1 (1995): 77–85. http://dx.doi.org/10.1042/bj3060077.

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The reaction of dopamine beta-monooxygenase (DBM; EC 1.14.17.1) with the prototypical non-conjugated olefinic substrate, 2-(1-cyclohexenyl)ethylamine (CyHEA) [see Sirimanne and May (1988) J. Am. Chem. Soc. 110, 7560-7561], was characterized. CyHEA undergoes facile DBM-catalysed allylic hydroxylation to form (R)-2-amino-1-(1-cyclohexenyl)ethanol (CyHEA-OH) without detectable epoxidation or allylic hydroxylation to form (R)-2-amino-1-(1-cyclohexenyl)ethanol (CyHEA-OH) without detectable epoxidation or allylic rearrangement, and with stereochemistry consistent with that of DBM-catalysed benzylic

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2

Yu, Yuehong, Daoming Sun, Shuanjin Wang, Min Xiao, Luyi Sun, and Yuezhong Meng. "Heteropolyacid Salt Catalysts for Methanol Conversion to Hydrocarbons and Dimethyl Ether: Effect of Reaction Temperature." Catalysts 9, no. 4 (2019): 320. http://dx.doi.org/10.3390/catal9040320.

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Phosphotungstic and silicotungstic acid salt catalysts (CuPW, CuSiW, FePW, FeSiW) were synthesized by substitution of protons with ferric and copper ions through a simple replacement reaction. The structure and thermal stability were characterized by IR, XRD and TG, and the salts showed a keggin structure and a thermal tolerance near 450 °C. Temperature programmed reactions indicated that the four catalysts showed similar trends in the change of methanol conversion, DME selectivity, and light olefins selectivity at 100–400 °C. Copper salt catalysts showed a 100% DME selectivity at temperatures

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3

Toumieux, Sylvestre, Mohamad Khodadadi, Gwladys Pourceau, Matthieu Becuwe, and Anne Wadouachi. "First Sustainable Aziridination of Olefins Using Recyclable Copper-Immobilized Magnetic Nanoparticles." Synlett 30, no. 05 (2019): 563–66. http://dx.doi.org/10.1055/s-0037-1611717.

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The first copper-catalyzed aziridination of olefins using recyclable magnetic nanoparticles is described. Magnetic nanoparticles were modified with dopamine and used as a support to coordinate copper. The methodology was optimized with styrene as olefin and using [N-(p-toluenesulfonyl)imino]phenyliodinane (PhI=NTs) as nitrene source. A microwave irradiation decreased the reaction time by 4-fold compared to conventional heating method. The catalyst was recovered by simple magnetic extraction and could be reused successfully up to five times without significant loss of activity. The methodology

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4

Kumar, Gulshan, Firasat Hussain, and Rajeev Gupta. "Copper based coordination polymers based on metalloligands: utilization as heterogeneous oxidation catalysts." Dalton Transactions 47, no. 47 (2018): 16985–94. http://dx.doi.org/10.1039/c8dt03836h.

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This work presents two copper-based coordination polymers and their utilization as stable, reusable and heterogeneous catalysts for the epoxidation of olefins using O<sub>2</sub> and for peroxide-mediated oxidation of benzyl alcohols under solvent-free conditions.

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5

Tang, Qing Jie, Wen Rong Wu, Xiao Min Yang, and Na Zhao. "Effect of Copper on Iron-Ruthenium Complex Catalyst for CO Hydrogenation." Advanced Materials Research 531 (June 2012): 276–79. http://dx.doi.org/10.4028/www.scientific.net/amr.531.276.

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A series of Iron-Ruthenium complex catalyst were prepared by precipitation and immersion. The effect of Copper was studied on Iron-Ruthenium complex catalyst for CO hydrogenation and temperature programmed reduction. The results show that the effect of Copper is important to Iron-Ruthenium complex catalyst for CO hydrogenation. The selectivity of Olefin improved obviously with copper adding into Iron-Ruthenium complex catalyst, and the intensity of reducing peak increased significantly

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6

Sultana, Jasmin, and Diganta Sarma. "Tetraamminecopper(II) Sulfate Monohydrate in Oxidative Azide-olefin Cyclo-addition and Three-component Click Reaction." Current Organic Synthesis 17, no. 1 (2020): 65–72. http://dx.doi.org/10.2174/1570179417666191223152643.

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Introduction: An effective Cu-complex, [Cu(NH3)4SO4 • H2O] was prepared conveniently from the inexpensive and easily available starting reagents in a simple route. Materials and Methods: Excellent reactivity of the catalyst was observed towards two competent clickcycloadditions: (a) oxidative cycloaddition of azides with electron-poor olefins and (b) one-pot cycloaddition of alkynes with boronic acid and sodium azide under “click-appropriate” conditions. Results: No external oxidant, short reaction time, high product yield, wide substrate scope, and aqueous solvent media make the azide-olefin

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7

Dileep, R., and B. J. Rudresha. "An ionic liquid immobilized copper complex for catalytic epoxidation." RSC Advances 5, no. 81 (2015): 65870–73. http://dx.doi.org/10.1039/c5ra12175b.

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A catalytic system consisting of copper complex and hydrogen peroxide in Emim ionic liquid medium was effective in the epoxidation of olefins and terpenes. The catalyst and the ionic liquid mixture was recycled and reused consistently.

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8

Yang, Guoqiang, Huiyuan Du, Jia Liu, Zheng Zhou, Xingbang Hu, and Zhibing Zhang. "Oxidation of olefins using molecular oxygen catalyzed by a part per million level of recyclable copper catalyst under mild conditions." Green Chemistry 19, no. 3 (2017): 675–81. http://dx.doi.org/10.1039/c6gc02186g.

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9

Lashanizadegan, Maryam, Sahar Shayegan, and Marzieh Sarkheil. "Copper(II) complex of (±)trans-1,2-cyclohexanediamine azo-linked Schiff base ligand encapsulated in nanocavity of zeolite-Y for the catalytic oxidation of olefins." Journal of the Serbian Chemical Society 81, no. 2 (2016): 153–62. http://dx.doi.org/10.2298/jsc150708085l.

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A Schiff base ligand derived from 4-(benzeneazo) salicylaldehyde and (?)trans-1,2-cyclohexanediamine (H2L) and its corresponding Cu(II) complex (CuL) has been synthesized and characterized by FT-IR, UV-VIS and 1H NMR. The copper Schiff base complex encapsulated in the nanopores of zeolite-Y (CuL-Y) by flexible ligand method and its encapsulation have been ensured by different studies. The homogeneous and its corresponding heterogeneous catalysts have been used for oxidation of different alkenes with tert-butyl hydroperoxide. Under the optimized reaction conditions, the oxidation of cyclooctene

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10

Wang, Fei, Xiang-Guang Meng, Yan-Yan Wu, Hong Huang, Jing Lv, and Wen-Wang Yu. "A Highly Efficient Heterogeneous Catalyst of Bimetal-Organic Frameworks for the Epoxidation of Olefin with H2O2." Molecules 25, no. 10 (2020): 2389. http://dx.doi.org/10.3390/molecules25102389.

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A series of bimetel organic framework MnxCu1−x-MOF were prepared. The MOFs was characterized and analyzed by powder X-ray diffraction (PXRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The catalytic activity of the developed catalyst was tested on various olefins by H2O2 as oxidant. The MOFs catalyst exhibits excellent catalytic activity for the epoxidations of various aromatic and cyclic olefins. Particularly, Mn0.1Cu0.9-MOF can achieve 90.2% conversion of styrene with 94.3% selectivity of styrene oxide at 0 °C after

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11

Anggoro, Didi Dwi, and Nor Aishah Saidina Amin. "Methane Conversion to Liquid Hydrocarbons over W-ZSM-5 and W Loaded Cu/HZSM-5." ASEAN Journal of Chemical Engineering 6, no. 2 (2006): 58. http://dx.doi.org/10.22146/ajche.50141.

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The direct conversion of natural gas-in particular, its principal component, methane into useful products has been the subject of intense study over the past decades. However, commercialization of this process is still not viable because its conversion and selectivity potentials remain low. Thus, the search continues to come up with a suitable catalyst that allows methane to be oxidized in a controlled environment to yield a high percentage of higher hydrocarbons. ZSM-5 zeolite has been known to be a suitable catalyst for olefin oligomerization. Previous studies, however, have indicated that Z

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12

Wang, Jian-Cheng, Yu-Hong Hu, Gong-Jun Chen, and Yu-Bin Dong. "Cu(ii)/Cu(0)@UiO-66-NH2: base metal@MOFs as heterogeneous catalysts for olefin oxidation and reduction." Chemical Communications 52, no. 89 (2016): 13116–19. http://dx.doi.org/10.1039/c6cc06076e.

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Two copper-loaded MOF materials, Cu(ii)@Ui-O-66-NH<sub>2</sub> (1) and Cu(0)@UiO-66-NH<sub>2</sub> (2), which can be highly active heterogeneous catalysts for olefin oxidation and hydrogenation, are reported.

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13

Li, Yahui, Fengxiang Zhu, Zechao Wang, and Xiao-Feng Wu. "A copper-catalyzed carbonylative four-component reaction of ethene and aliphatic olefins." Chemical Communications 54, no. 16 (2018): 1984–87. http://dx.doi.org/10.1039/c7cc09803k.

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14

Fabre, Indira, Thomas Poisson, Xavier Pannecoucke, Isabelle Gillaizeau, Ilaria Ciofini, and Laurence Grimaud. "Stereoselective access to trisubstituted fluorinated alkenyl thioethers." Catalysis Science & Technology 7, no. 9 (2017): 1921–27. http://dx.doi.org/10.1039/c7cy00076f.

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15

Liu, Jianming, Hong Yi, Xin Zhang, et al. "Copper-catalysed oxidative Csp3–H methylenation to terminal olefins using DMF." Chem. Commun. 50, no. 57 (2014): 7636–38. http://dx.doi.org/10.1039/c4cc02275k.

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A novel copper-catalysed direct oxidative Csp<sup>3</sup>–H methylenation to terminal olefins using DMF as one carbon source was developed. In this reaction, various functional groups were well tolerated, thus providing a simple way to construct arylvinylketones and arylvinylpyridines. The preliminary mechanistic investigations revealed that CH<sub>2</sub> was from DMF (N–CH<sub>3</sub>).

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16

Shul’pin, Georgiy B., and Lidia S. Shul’pina. "Oxidation of Organic Compounds with Peroxides Catalyzed by Polynuclear Metal Compounds." Catalysts 11, no. 2 (2021): 186. http://dx.doi.org/10.3390/catal11020186.

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The review describes articles that provide data on the synthesis and study of the properties of catalysts for the oxidation of alkanes, olefins, and alcohols. These catalysts are polynuclear complexes of iron, copper, osmium, nickel, manganese, cobalt, vanadium. Such complexes for example are: [Fe2(HPTB)(m-OH)(NO3)2](NO3)2·CH3OH·2H2O, where HPTB-¼N,N,N0,N0-tetrakis(2-benzimidazolylmethyl)-2-hydroxo-1,3-diaminopropane; complex [(PhSiO1,5)6]2[CuO]4[NaO0.5]4[dppmO2]2, where dppm-1,1-bis(diphenylphosphino)methane; (2,3-η-1,4-diphenylbut-2-en-1,4-dione)undecacarbonyl triangulotriosmium; phenylsilse

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17

Shimoyama, Yoshihiro, Yasutaka Kitagawa, Yuji Ohgomori, Yoshihiro Kon, and Dachao Hong. "Formate-driven catalysis and mechanism of an iridium–copper complex for selective aerobic oxidation of aromatic olefins in water." Chemical Science 12, no. 16 (2021): 5796–803. http://dx.doi.org/10.1039/d0sc06634f.

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A hetero-dinuclear Ir<sup>III</sup>–Cu<sup>II</sup> complex with two adjacent sites was employed as a catalyst for the aerobic oxidation of aromatic olefins driven by formate and promoted by a hydrophobic interaction in water.

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18

Hou, Junying, Yi Luan, Jie Yu, Yue Qi, Ge Wang, and Yunfeng Lu. "Fabrication of hierarchical composite microspheres of copper-doped Fe3O4@P4VP@ZIF-8 and their application in aerobic oxidation." New Journal of Chemistry 40, no. 12 (2016): 10127–35. http://dx.doi.org/10.1039/c6nj02239a.

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19

Souma, Yoshie. "Efforts to improve Japanese women’s status in STEM fields." Pure and Applied Chemistry 91, no. 4 (2019): 733–41. http://dx.doi.org/10.1515/pac-2018-0903.

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Abstract I discovered novel copper and silver carbonyl catalysts while at the National Institute of Advanced Industrial Science and Technology. The energy saving synthesis of tert-carboxylic acids was developed using the carbonylation reaction of olefins or alcohols using these novel copper or silver carbonyl catalysts under atmospheric pressure and at room temperature. After retiring from the institute, I was involved in efforts to improve women’s status in natural science, technology, engineering, and mathematics. I worked for the gender equality committee of the Chemical Society of Japan an

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20

Ichiyanagi, Tsuyoshi, Makoto Shimizu, and Tamotsu Fujisawa. "Asymmetric cyclopropanation of olefins with diazoacetate using chiral copper catalysts." Tetrahedron 53, no. 28 (1997): 9599–610. http://dx.doi.org/10.1016/s0040-4020(97)00644-3.

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21

Brunner, Henri, Christian Blüchel, and Michael P. Doyle. "Asymmetric catalysis, part 108 copper catalysts with optically active ligands in the enantioselective Meerwein arylation of activated olefins." Journal of Organometallic Chemistry 541, no. 1-2 (1997): 89–95. http://dx.doi.org/10.1016/s0022-328x(97)00018-1.

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22

Li, Qingyuan, Yuxin Wang, and Jianli Hu. "Synthesis of C 4 Olefins from Acetylene over Supported Copper Catalysts." ChemCatChem 12, no. 12 (2020): 3321–31. http://dx.doi.org/10.1002/cctc.202000396.

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23

Wu, Xuesong, Jan Riedel та Vy M. Dong. "Transforming Olefins into γ ,δ -Unsaturated Nitriles through Copper Catalysis". Angewandte Chemie International Edition 56, № 38 (2017): 11589–93. http://dx.doi.org/10.1002/anie.201705859.

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24

Wu, Xuesong, Jan Riedel та Vy M. Dong. "Transforming Olefins into γ ,δ -Unsaturated Nitriles through Copper Catalysis". Angewandte Chemie 129, № 38 (2017): 11747–51. http://dx.doi.org/10.1002/ange.201705859.

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25

Igumnov, Sergei M., Veronika L. Don, Vladimir A. Vyazkov, and Karen E. Narinyan. "Copper salt-catalysed reaction of perfluoroalkyl halides with olefins." Mendeleev Communications 16, no. 3 (2006): 189–90. http://dx.doi.org/10.1070/mc2006v016n03abeh002344.

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26

Wenzel, Timothy T. "Oxidation of olefins to aldehydes using a palladium–copper catalyst." J. Chem. Soc., Chem. Commun., no. 10 (1993): 862–64. http://dx.doi.org/10.1039/c39930000862.

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27

Chen, Weiqiang, Yin-Lin Zhang, Hui-Jing Li, Xiang Nan, Ying Liu, and Yan-Chao Wu. "Synthesis of N-Sulfonyl- and N-Acylpyrroles via a Ring-Closing Metathesis/Dehydrogenation Tandem Reaction." Synthesis 51, no. 19 (2019): 3651–66. http://dx.doi.org/10.1055/s-0039-1690002.

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N-Sulfonyl- and N-acylpyrroles were synthesized via olefin ring-closing metathesis of diallylamines and in situ oxidative aromatization in the presence of the ruthenium Grubbs catalyst and a suitable copper catalyst. In the presence of Cu(OTf)2 and CuBr2, the reaction afforded N-sulfonyl- and N-acylpyrroles, respectively, in one pot. Under an oxygen atmosphere, the reaction went smoothly without the need of hydroperoxide oxidants. This protocol possesses many advantages, such as using a nonhazardous oxidant and readily available starting materials, operating in one pot, and showing a broad sub

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28

Youssef, Nabil S., Ahmed M. A. El-Seidy, Marco Schiavoni, et al. "Thiosemicarbazone copper complexes as competent catalysts for olefin cyclopropanations." Journal of Organometallic Chemistry 714 (September 2012): 94–103. http://dx.doi.org/10.1016/j.jorganchem.2012.03.018.

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29

Díaz-Requejo, M. Mar, Tomás R. Belderraín, Swiatoslaw Trofimenko, and Pedro J. Pérez. "Unprecedented Highlycis-Diastereoselective Olefin Cyclopropanation Using Copper Homoscorpionate Catalysts." Journal of the American Chemical Society 123, no. 13 (2001): 3167–68. http://dx.doi.org/10.1021/ja0155736.

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30

Song, Xiaojing, Yan Yan, Yanning Wang, et al. "Hybrid compounds assembled from copper-triazole complexes and phosphomolybdic acid as advanced catalysts for the oxidation of olefins with oxygen." Dalton Transactions 46, no. 47 (2017): 16655–62. http://dx.doi.org/10.1039/c7dt03198j.

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Hybrid compounds of [CuI4(3atrz)<sub>4</sub>][PMoVI11Mo<sup>V</sup>O<sub>40</sub>] (1) and [CuI6(3atrz)<sub>6</sub>][PMo<sub>12</sub>O<sub>40</sub>]<sub>2</sub> (2) are active catalysts for olefin oxidation.

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31

BRUNNER, H., C. BLUECHEL, and M. P. DOYLE. "ChemInform Abstract: Asymmetric Catalysis. Part 108. Copper Catalysts with Optically Active Ligands in the Enantioselective Meerwein Arylation of Activated Olefins." ChemInform 29, no. 4 (2010): no. http://dx.doi.org/10.1002/chin.199804085.

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32

Nishikata, Takashi, Kimiaki Nakamura, Yuki Inoue, and Shingo Ishikawa. "A detachable ester bond enables perfect Z-alkylations of olefins for the synthesis of tri- and tetrasubstituted alkenes." Chemical Communications 51, no. 50 (2015): 10154–57. http://dx.doi.org/10.1039/c5cc03474d.

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We developed a tandem esterification–intramolecular alkylation reaction catalyzed by a copper catalyst, leading to the formation of a lactone, followed by hydrolysis of the resulting lactone to give Z-alkylated alkenes in good yields with perfect selectivities.

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33

Stibrany, Robert T., Donald N. Schulz, Smita Kacker, et al. "Polymerization and Copolymerization of Olefins and Acrylates by Bis(benzimidazole) Copper Catalysts." Macromolecules 36, no. 23 (2003): 8584–86. http://dx.doi.org/10.1021/ma034548c.

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34

ICHIYANAGI, T., M. SHIMIZU, and T. FUJISAWA. "ChemInform Abstract: Asymmetric Cyclopropanation of Olefins with Diazoacetate Using Chiral Copper Catalysts." ChemInform 28, no. 50 (2010): no. http://dx.doi.org/10.1002/chin.199750083.

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35

Li, Zhi-Peng, Xin-Yan Wu, Qi-Lin Zhou, and Wing-Lai Chan. "Enantioselective Allylic Oxidation of Olefins Using Chiral Quinolinyl-oxazoline Copper Complex Catalysts." Chinese Journal of Chemistry 19, no. 1 (2010): 40–44. http://dx.doi.org/10.1002/cjoc.20010190107.

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36

Andrus, Merritt B., and Benjamin W. Poehlein. "Epoxidation of olefins with peracid at low temperature with copper catalysis." Tetrahedron Letters 41, no. 7 (2000): 1013–14. http://dx.doi.org/10.1016/s0040-4039(00)00070-8.

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37

Villemin, Didier, Frédérique Sauvaget, and Milan Hàjek. "Addition of diethyl trichloromethylphosphonate to olefins catalysed by copper complexes." Tetrahedron Letters 35, no. 21 (1994): 3537–38. http://dx.doi.org/10.1016/s0040-4039(00)73230-8.

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38

Oudejans, J. C., A. C. Kock-Van Dalen, H. van Bekkum, and J. Kaminska. "Cyclopropanation of olefins by ethyl diazoacetate: Copper- and copper-complex-containing X-zeolites as the catalysts." Recueil des Travaux Chimiques des Pays-Bas 105, no. 10 (2010): 421–27. http://dx.doi.org/10.1002/recl.19861051017.

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39

Michaelis, David J., Christopher J. Shaffer, and Tehshik P. Yoon. "Copper(II)-Catalyzed Aminohydroxylation of Olefins." Journal of the American Chemical Society 129, no. 7 (2007): 1866–67. http://dx.doi.org/10.1021/ja067894t.

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40

Bunchuay, T., R. Ketkaew, P. Chotmongkolsap, et al. "Microwave-assisted one-pot functionalization of metal–organic framework MIL-53(Al)-NH2 with copper(ii) complexes and its application in olefin oxidation." Catalysis Science & Technology 7, no. 24 (2017): 6069–79. http://dx.doi.org/10.1039/c7cy01941f.

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41

Anggoro, Didi Dwi, and Nor Aishah Saidina Amin. "Characterization and performance of W-ZSM-5 and loaded Cu/ZsM-5 catalysts." Jurnal Teknik Kimia Indonesia 4, no. 1 (2018): 137. http://dx.doi.org/10.5614/jtki.2005.4.1.2.

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The metal oxides with sufficiently high dehydrogenation and low olefin oxidation activities reduces the acidity of ZSM-5. As a result, the metal containing ZSM-5 can produce higher hydrocarbons in methane oxidation. Many researchers studied the applicability of HZSM-5 and modify ZSM-5 to methane conversion to liquid hydrocarbons but result of their research still lead to low conversion and selectivity. The modified HZS-5 by loading with Tungsten (W) enhanced its heat resistant performance, and the high reaction temperature (800ºC) did not lead to the loss of W component by sublimation. The loa

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42

Evans, David A., Margaret M. Faul, Mark T. Bilodeau, Benjamin A. Anderson, and David M. Barnes. "Bis(oxazoline)-copper complexes as chiral catalysts for the enantioselective aziridination of olefins." Journal of the American Chemical Society 115, no. 12 (1993): 5328–29. http://dx.doi.org/10.1021/ja00065a068.

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43

Muñoz-Molina, José María, Ana Caballero, M. Mar Díaz-Requejo, Swiatoslaw Trofimenko, Tomás R. Belderraín, and Pedro J. Pérez. "Copper−Homoscorpionate Complexes as Active Catalysts for Atom Transfer Radical Addition to Olefins." Inorganic Chemistry 46, no. 19 (2007): 7725–30. http://dx.doi.org/10.1021/ic0702872.

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44

Le Bras, Jean, and Jacques Muzart. "Water-soluble and reusable copper catalyst for the allylic benzoyloxylation of olefins." Tetrahedron Letters 43, no. 3 (2002): 431–33. http://dx.doi.org/10.1016/s0040-4039(01)02170-0.

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45

WENZEL, T. T. "ChemInform Abstract: Oxidation of Olefins to Aldehydes Using a Palladium-Copper Catalyst." ChemInform 24, no. 35 (2010): no. http://dx.doi.org/10.1002/chin.199335150.

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46

Youssef, Nabil S., Ahmed M. A. El-Seidy, Marco Schiavoni, et al. "ChemInform Abstract: Thiosemicarbazone Copper Complexes as Competent Catalysts for Olefin Cyclopropanations." ChemInform 44, no. 3 (2013): no. http://dx.doi.org/10.1002/chin.201303036.

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47

Andrus, Merritt B., and Xi Chen. "Catalytic enantioselective allylic oxidation of olefins with copper(I) catalysts and new perester oxidants." Tetrahedron 53, no. 48 (1997): 16229–40. http://dx.doi.org/10.1016/s0040-4020(97)01011-9.

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48

Andrus, Merritt B., and Benjamin W. Poehlein. "ChemInform Abstract: Epoxidation of Olefins with Peracid at Low Temperature with Copper Catalysis." ChemInform 31, no. 18 (2010): no. http://dx.doi.org/10.1002/chin.200018080.

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49

Wang, Xi-Sen, Hong Zhao, Yong-Hua Li, Ren-Gen Xiong, and Xiao-Zeng You. "Olefin-Copper(I) Complexes and their Properties." Topics in Catalysis 35, no. 1-2 (2005): 43–61. http://dx.doi.org/10.1007/s11244-005-3812-6.

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50

Mairena, Miguel Angel, M. Mar Díaz-Requejo, Tomás R. Belderraín, M. Carmen Nicasio, Swiatoslaw Trofimenko, and Pedro J. Pérez. "Copper-Homoscorpionate Complexes as Very Active Catalysts for the Olefin Aziridination Reaction." Organometallics 23, no. 2 (2004): 253–56. http://dx.doi.org/10.1021/om034158e.

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