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Journal articles on the topic 'Precatalyst'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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1

Takahashi, Rina, Koji Kubota, and Hajime Ito. "Air- and moisture-stable Xantphos-ligated palladium dialkyl complex as a precatalyst for cross-coupling reactions." Chemical Communications 56, no. 3 (2020): 407–10. http://dx.doi.org/10.1039/c9cc06946a.

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A Xantphos-ligated palladium dialkyl complex can serve as a high performance precatalyst for various cross-coupling reactions, thus providing a convenient alternative to previously developed classes of precatalysts.

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2

Borré, Etienne, Frederic Caijo, Christophe Crévisy, and Marc Mauduit. "New library of aminosulfonyl-tagged Hoveyda–Grubbs type complexes: Synthesis, kinetic studies and activity in olefin metathesis transformations." Beilstein Journal of Organic Chemistry 6 (December 6, 2010): 1159–66. http://dx.doi.org/10.3762/bjoc.6.132.

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Seven novel Hoveyda–Grubbs precatalysts bearing an aminosulfonyl function are reported. Kinetic studies indicate an activity enhancement compared to Hoveyda’s precatalyst. A selection of these catalysts was investigated with various substrates in ring-closing metathesis of dienes or enynes and cross metathesis. The results demonstrate that these catalysts show a good tolerance to various chemical functions.

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3

Imazu, Haruna, Kakeru Masaoka, Saki Uike, and Masamichi Ogasawara. "Molybdenum-Catalyzed Enantioselective Ring-Closing Metathesis/Kinetic Resolution of Racemic Planar-Chiral 1,1′-Diallylferrocenes." Catalysts 14, no. 2 (2024): 123. http://dx.doi.org/10.3390/catal14020123.

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The molybdenum-catalyzed enantioselective ring-closing metathesis/kinetic resolution of a series of racemic planar-chiral 1,1′-diallylferrocene derivatives was reinvestigated utilizing the method of generating catalytically active chiral molybdenum-alkylidene species in situ, which allowed us to examine a variety of chiral molybdenum-alkylidene metathesis precatalysts in the present asymmetric reaction. With the catalyst screening experiments conducted in this study, the more practical reaction conditions, including a choice of a proper chiral molybdenum precatalyst, giving planar-chiral ferro

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4

Yang, Yi, Qinghai Zhou, Junjie Cai, et al. "Exploiting the trifluoroethyl group as a precatalyst ligand in nickel-catalyzed Suzuki-type alkylations." Chemical Science 10, no. 20 (2019): 5275–82. http://dx.doi.org/10.1039/c9sc00554d.

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5

Rahman, Md Mahbubur, Qun Zhao, Guangrong Meng, Roger Lalancette, Roman Szostak, and Michal Szostak. "[IPr#–PEPPSI]: A Well-Defined, Highly Hindered and Broadly Applicable Pd(II)–NHC (NHC = N-Heterocyclic Carbene) Precatalyst for Cross-Coupling Reactions." Molecules 28, no. 15 (2023): 5833. http://dx.doi.org/10.3390/molecules28155833.

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In this Special Issue, “Featured Papers in Organometallic Chemistry”, we report on the synthesis and characterization of [IPr#–PEPPSI], a new, well-defined, highly hindered Pd(II)–NHC precatalyst for cross-coupling reactions. This catalyst was commercialized in collaboration with MilliporeSigma, Burlington, ON, Canada (no. 925489) to provide academic and industrial researchers with broad access to reaction screening and optimization. The broad activity of [IPr#–PEPPSI] in cross-coupling reactions in a range of bond activations with C–N, C–O, C–Cl, C–Br, C–S and C–H cleavage is presented. A com

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6

Hausmann, Jan Niklas, Stefan Mebs, Konstantin Laun, et al. "Understanding the formation of bulk- and surface-active layered (oxy)hydroxides for water oxidation starting from a cobalt selenite precursor." Energy & Environmental Science 13, no. 10 (2020): 3607–19. http://dx.doi.org/10.1039/d0ee01912g.

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Starting from a cobalt selenite precatalyst, we obtained a bulk and a near-surface active oxygen evolution catalyst and connected their structural properties to the precatalyst structure, the transformation conditions, and the catalytic activity.

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7

Jung, S.-C., and W.-S. Yoon. "Modelling and parametric investigation of NOx reduction by oxidation precatalyst-assisted ammonia-selective catalytic reduction." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 223, no. 9 (2009): 1193–206. http://dx.doi.org/10.1243/09544070jauto1099.

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Nitrogen oxide (NO x) reduction by the selective catalytic reduction (SCR) system assisted by an oxidation precatalyst is modelled and analytically investigated. The Langmuir—Hinshelwood SCR kinetic scheme with vanadium-based catalyst and ammonia (NH3) reductant in conjunction with the NO—NO2 conversion reaction over a platinum-based catalyst is used. The effects of the ratio of the oxidation precatalyst to the SCR monolith volume, the gas temperature, the space velocity, and the NH3-to-NO x concentration ratio on the de-NO x performance are parametrically examined. The oxidation precatalyst p

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8

Gupta, Saswata, Siyuan Su, Yu Zhang, Peng Liu, Donald J. Wink, and Daesung Lee. "Ruthenabenzene: A Robust Precatalyst." Journal of the American Chemical Society 143, no. 19 (2021): 7490–500. http://dx.doi.org/10.1021/jacs.1c02237.

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9

Roque, Jose B., Alex M. Shimozono, Tyler P. Pabst, Gabriele Hierlmeier, Paul O. Peterson, and Paul J. Chirik. "Kinetic and thermodynamic control of C(sp ² )–H activation enables site-selective borylation." Science 382, no. 6675 (2023): 1165–70. http://dx.doi.org/10.1126/science.adj6527.

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Catalysts that distinguish between electronically distinct carbon-hydrogen (C–H) bonds without relying on steric effects or directing groups are challenging to design. In this work, cobalt precatalysts supported by N -alkyl-imidazole–substituted pyridine dicarbene (ACNC) pincer ligands are described that enable undirected, remote borylation of fluoroaromatics and expansion of scope to include electron-rich arenes, pyridines, and tri- and difluoromethoxylated arenes, thereby addressing one of the major limitations of first-row transition metal C–H functionalization catalysts. Mechanistic studie

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10

Chouki, Takwa, Manel Machreki, Jelena Topić, et al. "Iron Phosphide Precatalyst for Electrocatalytic Degradation of Rhodamine B Dye and Removal of Escherichia coli from Simulated Wastewater." Catalysts 12, no. 3 (2022): 269. http://dx.doi.org/10.3390/catal12030269.

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Electrocatalysis using low-cost materials is a promising, economical strategy for remediation of water contaminated with organic chemicals and microorganisms. Here, we report the use of iron phosphide (Fe2P) precatalyst for electrocatalytic water oxidation; degradation of a representative aromatic hydrocarbon, the dye rhodamine B (RhB); and inactivation of Escherichia coli (E. coli) bacteria. It was found that during anodic oxidation, the Fe2P phase was converted to iron phosphate phase (Fe2P-iron phosphate). This is the first report that Fe2P precatalyst can efficiently catalyze electrooxidat

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11

Kolaříková, Viola, Markéta Rybáčková, Martin Svoboda, and Jaroslav Kvíčala. "Ring-closing metathesis of prochiral oxaenediynes to racemic 4-alkenyl-2-alkynyl-3,6-dihydro-2H-pyrans." Beilstein Journal of Organic Chemistry 16 (November 13, 2020): 2757–68. http://dx.doi.org/10.3762/bjoc.16.226.

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The prochiral 4-(allyloxy)hepta-1,6-diynes, optionally modified in the positions 1 and 7 with an alkyl or ester group, undergo a chemoselective ring-closing enyne metathesis yielding racemic 4-alkenyl-2-alkynyl-3,6-dihydro-2H-pyrans. Among the catalysts tested, Grubbs 1st generation precatalyst in the presence of ethene (Mori conditions) gave superior results compared to the more stable Grubbs or Hoveyda–Grubbs 2nd generation precatalysts. This is probably caused by a suppression of the subsequent side-reactions of the enyne metathesis product with ethene. On the other hand, the 2nd generation

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12

Yanagisawa, Akira, and Aiko Kawada. "Chiral Silver Alkoxide Catalyzed Asymmetric Aldol Reaction of Alkenyl Esters with Isatins." Synlett 32, no. 12 (2021): 1246–52. http://dx.doi.org/10.1055/a-1479-4694.

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AbstractA catalytic enantioselective aldol reaction of alkenyl esters with isatins was achieved using a DM-BINAP·AgOTf complex as the chiral precatalyst and N,N-diisopropylethylamine as the base precatalyst in the presence of methanol or 2,2,2-trifluoroethanol. Optically active 3-alkylated 3-hydroxy-2-oxindoles having up to 98% ee were diastereoselectively obtained in moderate to high yields not only from cyclic alkenyl esters but also from acyclic ones through the in situ generated chiral silver enolates.

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13

Hausmann, Jan Niklas, Stefan Mebs, Konstantin Laun, Ingo Zebger, Matthias Driess, and Prashanth W. Menezes. "Precatalyst Reconstruction during the Electrocatlytic Oxygen Evolution Reaction: The Influence of the Precursor and the Transformation Conditions." ECS Meeting Abstracts MA2022-02, no. 48 (2022): 1829. http://dx.doi.org/10.1149/ma2022-02481829mtgabs.

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The oxygen evolution reaction (OER) is the most likely reaction to supply electrons and protons for future green fuel and chemical formation, and thus many materials have been studied for their suitability as OER (pre)catalysts. However, in-situ and post-catalytic studies have shown that the harsh OER conditions alter the electrode materials, causing a reconstruction to mainly transition metal oxyhydroxides in alkaline and near-neutral electrolyte. As this reconstructed phase is the real catalyst, its atomic structure and physical properties must be precisely known. These properties will be af

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14

Raducan, Mihai, Carles Rodríguez-Escrich, Xacobe C. Cambeiro, Eduardo C. Escudero-Adán, Miquel A. Pericàs, and Antonio M. Echavarren. "A multipurpose gold(i) precatalyst." Chemical Communications 47, no. 17 (2011): 4893. http://dx.doi.org/10.1039/c1cc10293a.

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15

Singh, Baghendra, Abhimanyu Yadav, and Arindam Indra. "Realizing electrochemical transformation of a metal–organic framework precatalyst into a metal hydroxide–oxy(hydroxide) active catalyst during alkaline water oxidation." Journal of Materials Chemistry A 10, no. 8 (2022): 3843–68. http://dx.doi.org/10.1039/d1ta09424f.

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16

Vasilenko, Vladislav, Clemens K. Blasius, Hubert Wadepohl, and Lutz H. Gade. "Borohydride intermediates pave the way for magnesium-catalysed enantioselective ketone reduction." Chemical Communications 56, no. 8 (2020): 1203–6. http://dx.doi.org/10.1039/c9cc09111d.

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17

Damljanović, Ivan, Dragana Stevanović, Anka Pejović, et al. "The palladium(ii) complex of N,N-diethyl-1-ferrocenyl-3-thiabutanamine: synthesis, solution and solid state structure and catalytic activity in Suzuki–Miyaura reaction." RSC Adv. 4, no. 82 (2014): 43792–99. http://dx.doi.org/10.1039/c4ra08140d.

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18

Trose, M., M. Reiß, F. Reiß, et al. "Dehydropolymerisation of methylamine borane using a dinuclear 1,3-allenediyl bridged zirconocene complex." Dalton Transactions 47, no. 37 (2018): 12858–62. http://dx.doi.org/10.1039/c8dt03311k.

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19

Németh, Brigitta, Henrik Land, Ann Magnuson, Anders Hofer, and Gustav Berggren. "The maturase HydF enables [FeFe] hydrogenase assembly via transient, cofactor-dependent interactions." Journal of Biological Chemistry 295, no. 33 (2020): 11891–901. http://dx.doi.org/10.1074/jbc.ra119.011419.

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[FeFe] hydrogenases have attracted extensive attention in the field of renewable energy research because of their remarkable efficiency for H2 gas production. H2 formation is catalyzed by a biologically unique hexanuclear iron cofactor denoted the H-cluster. The assembly of this cofactor requires a dedicated maturation machinery including HydF, a multidomain [4Fe4S] cluster protein with GTPase activity. HydF is responsible for harboring and delivering a precatalyst to the apo-hydrogenase, but the details of this process are not well understood. Here, we utilize gas-phase electrophoretic macrom

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20

Légaré Lavergne, Julien, Hoang-Minh To, and Frédéric-Georges Fontaine. "Boric acid as a precatalyst for BH₃-catalyzed hydroboration." RSC Advances 11, no. 51 (2021): 31941–49. http://dx.doi.org/10.1039/d1ra05945a.

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21

Chabbra, Sonia, David M. Smith, and Bela E. Bode. "Isolation of EPR spectra and estimation of spin-states in two-component mixtures of paramagnets." Dalton Transactions 47, no. 31 (2018): 10473–79. http://dx.doi.org/10.1039/c8dt00977e.

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22

Yu, Wei-Bin, Qing-Ya He, Hua-Tian Shi, and Xianwen Wei. "Heterogeneous catalysis of water oxidation supported by a novel metallamacrocycle." New Journal of Chemistry 40, no. 3 (2016): 2354–61. http://dx.doi.org/10.1039/c5nj02931g.

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23

Cao, Xu, Weifan Wang, Kai Lu, Weiwei Yao, Fei Xue, and Mengtao Ma. "Magnesium-catalyzed hydroboration of organic carbonates, carbon dioxide and esters." Dalton Transactions 49, no. 9 (2020): 2776–80. http://dx.doi.org/10.1039/d0dt00465k.

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24

Yu, Xun, Feifeng Zhu, Donglei Bu, and Hao Lei. "Ferrous complexes supported by sterically encumbered asymmetric bis(arylimino)acenaphthene (BIAN) ligands: synthesis, characterization and screening for catalytic hydrosilylation of carbonyl compounds." RSC Advances 7, no. 25 (2017): 15321–29. http://dx.doi.org/10.1039/c7ra01511a.

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25

Liu, Ming, Randi Zhang, Yanping Ma, et al. "Trifluoromethoxy-substituted nickel catalysts for producing highly branched polyethylenes: impact of solvent, activator and N,N′-ligand on polymer properties." Polymer Chemistry 13, no. 8 (2022): 1040–58. http://dx.doi.org/10.1039/d1py01637g.

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26

Largeron, Martine, Patrick Deschamps, Karim Hammad, and Maurice-Bernard Fleury. "A dual biomimetic process for the selective aerobic oxidative coupling of primary amines using pyrogallol as a precatalyst. Isolation of the [5 + 2] cycloaddition redox intermediates." Green Chemistry 22, no. 6 (2020): 1894–905. http://dx.doi.org/10.1039/c9gc03992a.

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27

Weetman, Catherine, Mathew D. Anker, Merle Arrowsmith, et al. "Magnesium-catalysed nitrile hydroboration." Chemical Science 7, no. 1 (2016): 628–41. http://dx.doi.org/10.1039/c5sc03114a.

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28

Beattie, D. Dawson, Thomas Schareina, and Matthias Beller. "A room temperature cyanation of (hetero)aromatic chlorides by an air stable nickel(ii) XantPhos precatalyst and Zn(CN)2." Organic & Biomolecular Chemistry 15, no. 20 (2017): 4291–94. http://dx.doi.org/10.1039/c7ob00892a.

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29

Schiwek, Christian H., Vladislav Vasilenko, Hubert Wadepohl, and Lutz H. Gade. "The open d-shell enforces the active space in 3d metal catalysis: highly enantioselective chromium(ii) pincer catalysed hydrosilylation of ketones." Chemical Communications 54, no. 66 (2018): 9139–42. http://dx.doi.org/10.1039/c8cc05172k.

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30

Arthurs, Ross A., David L. Hughes, and Christopher J. Richards. "Planar chiral palladacycle precatalysts for asymmetric synthesis." Organic & Biomolecular Chemistry 18, no. 28 (2020): 5466–72. http://dx.doi.org/10.1039/d0ob01331e.

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31

Liu, Chengwei, and Michal Szostak. "Decarbonylative thioetherification by nickel catalysis using air- and moisture-stable nickel precatalysts." Chemical Communications 54, no. 17 (2018): 2130–33. http://dx.doi.org/10.1039/c8cc00271a.

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32

Huang, Ronghui, Yongchun Yang, Duo-Sheng Wang, Liang Zhang, and Dawei Wang. "Where does Au coordinate to N-(2-pyridiyl)benzotriazole: gold-catalyzed chemoselective dehydrogenation and borrowing hydrogen reactions." Organic Chemistry Frontiers 5, no. 2 (2018): 203–9. http://dx.doi.org/10.1039/c7qo00756f.

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33

Hynes, Toren, Erin N. Welsh, Robert McDonald, Michael J. Ferguson, and Alexander W. H. Speed. "Pyridine Hydroboration with a Diazaphospholene Precatalyst." Organometallics 37, no. 6 (2018): 841–44. http://dx.doi.org/10.1021/acs.organomet.8b00028.

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34

Shields, Jason D., Erin E. Gray, and Abigail G. Doyle. "A Modular, Air-Stable Nickel Precatalyst." Organic Letters 17, no. 9 (2015): 2166–69. http://dx.doi.org/10.1021/acs.orglett.5b00766.

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35

Zhang, Guoqi, Haisu Zeng, Sihan Li, et al. "1-D manganese(ii)-terpyridine coordination polymers as precatalysts for hydrofunctionalisation of carbonyl compounds." Dalton Transactions 49, no. 8 (2020): 2610–15. http://dx.doi.org/10.1039/c9dt04637b.

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36

Zhang, Bingyi, Xiaoli Ma, Ben Yan, et al. "An efficient catalytic method for hydrophosphination of heterocumulenes with diethylzinc as precatalyst without a solvent." Dalton Transactions 50, no. 43 (2021): 15488–92. http://dx.doi.org/10.1039/d1dt02706a.

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The hydrophosphination of heterocumulenes with Ph2PH using diethylzinc as precatalyst in neat conditions, which shows excellent catalytic effects. Intermediate is characterized to corroborate the proposed catalytic mechanism.

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37

Gupta, Suraj K., and Joyanta Choudhury. "Templating an N-heterocyclic carbene (NHC)-cyclometalated Cp*IrIII-based oxidation precatalyst on a pendant coordination platform: assessment of the oxidative behavior via electrochemical, spectroscopic and catalytic probes." Dalton Transactions 44, no. 3 (2015): 1233–39. http://dx.doi.org/10.1039/c4dt03161j.

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38

Hu, Miao, Yong Jiang, Nan Sun, et al. "Nickel-catalyzed C3-alkylation of indoles with alcohols via a borrowing hydrogen strategy." New Journal of Chemistry 45, no. 22 (2021): 10057–62. http://dx.doi.org/10.1039/d1nj01581h.

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39

Wang, Haifei, Xiaojun Zheng, Qifu Deng, et al. "A Chiral Secondary Amine–Amidophosphane Precatalyst for Silver-Catalyzed Asymmetric 1,3-Dipolar Cycloaddition Reactions." Synthesis 50, no. 12 (2018): 2347–58. http://dx.doi.org/10.1055/s-0037-1609492.

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A class of multifunctional amidophosphanes derived from chiral 1,2-diphenylethylenediamines and natural α-amino acids has been developed. Among these, in combination with silver(I) salts, a chiral secondary amine–amidophosphane precatalyst has been demonstrated as being a highly efficient multifunctional precatalyst in the asymmetric 1,3-dipolar cycloaddition of azomethine ylides, including a series of heterocyclic, aliphatic, and 2-substituted azomethine ylides, and aromatic α,β-unsaturated aldehyde derived imino esters with different electron-deficient alkenes, as well as the three-component

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40

Hu, Feng, and Michal Szostak. "Ruthenium(0)-catalyzed hydroarylation of alkynes via ketone-directed C–H functionalization using in situ-generated ruthenium complexes." Chemical Communications 52, no. 62 (2016): 9715–18. http://dx.doi.org/10.1039/c6cc04537e.

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41

Perez, Viridiana, Pierre Audet, Wenhua Bi, and Frédéric-Georges Fontaine. "Phosphidoboratabenzene–rhodium(i) complexes as precatalysts for the hydrogenation of alkenes at room temperature and atmospheric pressure." Dalton Transactions 45, no. 5 (2016): 2130–37. http://dx.doi.org/10.1039/c5dt03109e.

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The synthesis and characterization of a phosphido-boratabenzene rhodium complex is reported. The species acts as a precatalyst for the hydrogenation of alkenes at room temperature and atmospheric pressure.

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42

Zhang, Guoqi, Sihan Li, Jing Wu, et al. "Highly efficient and selective hydroboration of terminal and internal alkynes catalysed by a cobalt(ii) coordination polymer." Organic Chemistry Frontiers 6, no. 18 (2019): 3228–33. http://dx.doi.org/10.1039/c9qo00834a.

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43

Beniazza, R., F. Molton, C. Duboc, et al. "Copper(i)-photocatalyzed trifluoromethylation of alkenes." Chemical Communications 51, no. 46 (2015): 9571–74. http://dx.doi.org/10.1039/c5cc01923k.

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44

Ronson, Thomas O., Martin H. H. Voelkel, Richard J. K. Taylor, and Ian J. S. Fairlamb. "Macrocyclic polyenynes: a stereoselective route to vinyl-ether-containing skipped diene systems." Chemical Communications 51, no. 38 (2015): 8034–36. http://dx.doi.org/10.1039/c5cc02091c.

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Novel macrocyclic polyenyne 1, with skipped unsaturation, has been constructed using Pd-catalysed cross-coupling, Wittig olefination and lithiation/alkylation methodologies; the final Stille macrocyclisation utilised the promising precatalyst, AsCat.

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45

Zimbron, Jeremy M., Maxime Dauphinais, and André B. Charette. "Noyori–Ikariya catalyst supported on tetra-arylphosphonium salt for asymmetric transfer hydrogenation in water." Green Chemistry 17, no. 6 (2015): 3255–59. http://dx.doi.org/10.1039/c5gc00086f.

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An easily prepared, low weight, recyclable supported Noyori–Ikariya catalyst is described. The ruthenium precatalyst provides excellent conversions and high enantioselectivities for the asymmetric transfer hydrogenation of ketones in water.

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46

Hang, Zhijun, Jun Zhu, Xiang Lian, Peng Xu, Han Yu, and Sheng Han. "A highly enantioselective Biginelli reaction using self-assembled methanoproline–thiourea organocatalysts: asymmetric synthesis of 6-isopropyl-3,4-dihydropyrimidines." Chemical Communications 52, no. 1 (2016): 80–83. http://dx.doi.org/10.1039/c5cc07880f.

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An efficient self-assembled methanoproline–thiourea organocatalyst for the synthesis of optically active 6-isopropyl-3,4-dihydropyrimidines via an asymmetric Biginelli reaction was developed, which is superior to the individual precatalyst.

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47

Anaby, Aviel, Mathias Schelwies, Jonas Schwaben, Frank Rominger, A. Stephen K. Hashmi, and Thomas Schaub. "Study of Precatalyst Degradation Leading to the Discovery of a New Ru0 Precatalyst for Hydrogenation and Dehydrogenation." Organometallics 37, no. 13 (2018): 2193–201. http://dx.doi.org/10.1021/acs.organomet.8b00353.

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48

Wang, Gaonan, Xin Xie, Wei Xu, and Yuanhong Liu. "Nickel-catalyzed highly regioselective hydrocyanation of alkenes with Zn(CN)2." Organic Chemistry Frontiers 6, no. 12 (2019): 2037–42. http://dx.doi.org/10.1039/c9qo00396g.

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The first general and regioselective nickel-catalyzed hydrocyanation of terminal alkenes with Zn(CN)<sub>2</sub> using an air-stable and inexpensive nickel(ii) salt as the precatalyst has been developed.

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49

Fu, Shao, Yongdong Liu, Yong Ding, et al. "A mononuclear cobalt complex with an organic ligand acting as a precatalyst for efficient visible light-driven water oxidation." Chem. Commun. 50, no. 17 (2014): 2167–69. http://dx.doi.org/10.1039/c3cc48059c.

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50

Nakata, Norio, Kazuaki Nakamura, Shotaro Nagaoka та Akihiko Ishii. "Carbazolyl-Substituted [OSSO]-Type Zirconium(IV) Complex as a Precatalyst for the Oligomerization and Polymerization of α-Olefins". Catalysts 9, № 6 (2019): 528. http://dx.doi.org/10.3390/catal9060528.

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The dibenzyl zirconium(IV) complex (4) incorporating with a carbazolyl(Cbz)-substituted [OSSO]-type bis(phenolate) ligand was synthesized. Upon activation with dried modified methylaluminoxane (dMMAO), precatalyst 4 at relatively low catalyst loadings was found to promote the 1,2-regioselective oligomerization of 1-hexene to produce the corresponding vinylidene-ended oligomers with moderate turnover frequencies (TOFs) up to 2080 h−1. The 13C NMR analysis of the resulting oligomers revealed the formation of dimer-enriched oligo(1-hexene)s in 39–62% distributions. The precatalyst 4 with dried me

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