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Articoli di riviste sul tema "Modular catalysis"

Autore: Grafiati

Pubblicato: 19 aprile 2025

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1

Khettar, Ibrahim, Alicja Malgorzata Araszczuk e Rosaria Schettini. "Peptidomimetic-Based Asymmetric Catalysts". Catalysts 13, n. 2 (21 gennaio 2023): 244. http://dx.doi.org/10.3390/catal13020244.

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Despite the great advantages of peptidomimetic scaffolds, there are only a few examples of their application in the field of asymmetric catalysis. Peptidomimetic scaffolds offer numerous advantages related to their easy preparation, modular and tunable structures, and biomimetic features, which make them well suited as chiral catalysts. This review underlines the structure–function relationship for catalytic properties towards efficient enantioselective catalysis.

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2

Burk, Mark J. "Modular Phospholane Ligands in Asymmetric Catalysis". Accounts of Chemical Research 33, n. 6 (giugno 2000): 363–72. http://dx.doi.org/10.1021/ar990085c.

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Llorente, Nuria, Héctor Fernández-Pérez, José L. Núñez-Rico, Lucas Carreras, Alicia Martínez-Carrión, Ester Iniesta, Andrés Romero-Navarro, Alba Martínez-Bascuñana e Anton Vidal-Ferran. "Efficient modular phosphorus-containing ligands for stereoselective catalysis". Pure and Applied Chemistry 91, n. 1 (28 gennaio 2019): 3–15. http://dx.doi.org/10.1515/pac-2018-0805.

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Abstract Over several years, our research team has contributed to ligand design for metal-catalyzed stereoselective transformations. This has been achieved with the synthesis and application to organic transformations of interest of an array of structurally diverse P-containing ligands. These range from highly modular enantiopure phosphine–phosphite ligands to supramolecularly regulated enantioselective phosphorus-based catalysts. Our research in supramolecular interactions has also led to the discovery of an unprecedented halogen-bonded rhodium-catalyst.

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4

Burk, Mark J. "ChemInform Abstract: Modular Phospholane Ligands in Asymmetric Catalysis". ChemInform 31, n. 36 (3 giugno 2010): no. http://dx.doi.org/10.1002/chin.200036267.

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5

Lin, Wenbin. "Metal-Organic Frameworks for Asymmetric Catalysis and Chiral Separations". MRS Bulletin 32, n. 7 (luglio 2007): 544–48. http://dx.doi.org/10.1557/mrs2007.104.

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Metal-organic frameworks (MOFs) are an interesting class of molecule-based hybrid materials built from metal-connecting points and bridging ligands. MOFs have received much attention, owing to their potential impact on many technological areas, including gas storage, separation, and heterogeneous catalysis. The modular nature of MOFs endows them with facile tunability, and as a result, properly designed MOFs can yield ideal heterogeneous catalysts with uniform active sites through judicious choice of the building blocks. Homochiral MOFs, which can be prepared by numerous approaches (construction from achiral components by seeding with a chiral single crystal, templating with coordinating chiral co-ligands, and building from metal-connecting nodes and chiral bridging ligands), represent a unique class of materials for the economical production of optically pure compounds, whether through asymmetric catalysis or enantioselective inclusion of chiral guest molecules in their porous frameworks. As such, homochiral MOFs promise new opportunities for developing chirotechnology. This contribution provides a brief overview of recent progress in the synthesis of homochiral porous MOFs and their applications in asymmetric catalysis and chiral separations.

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6

Geri, Jacob B., Joanna L. Ciatti e Nathaniel K. Szymczak. "Charge effects regulate reversible CO2 reduction catalysis". Chemical Communications 54, n. 56 (2018): 7790–93. http://dx.doi.org/10.1039/c8cc04370a.

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Modular but geometrically constrained ligands were used to investigate the impact of key ligand design parameters (charge and bite angle) on CO₂ hydrogenation and formic acid dehydrogenation activity.

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7

Dimian, Alexandre C., e Gadi Rothenberg. "An effective modular process for biodiesel manufacturing using heterogeneous catalysis". Catalysis Science & Technology 6, n. 15 (2016): 6097–108. http://dx.doi.org/10.1039/c6cy00426a.

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8

Delpont, Nicolas, Imma Escofet, Patricia Pérez-Galán, Dirk Spiegl, Mihai Raducan, Christophe Bour, Riccardo Sinisi e Antonio M. Echavarren. "Modular chiral gold(i) phosphite complexes". Catalysis Science & Technology 3, n. 11 (2013): 3007. http://dx.doi.org/10.1039/c3cy00250k.

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9

Xiong, Thao M., Edzna S. Garcia, Junfeng Chen, Lingyang Zhu, Ariale J. Alzona e Steven C. Zimmerman. "Enzyme-like catalysis by single chain nanoparticles that use transition metal cofactors". Chemical Communications 58, n. 7 (2022): 985–88. http://dx.doi.org/10.1039/d1cc05578j.

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10

Schramm, Michael, Cindy Pham, Michelle Park, Jenny Pham e Sadie Martin. "Modular Preparation of Diverse Dipyrrolemethanes". Synthesis 45, n. 09 (10 aprile 2013): 1165–73. http://dx.doi.org/10.1055/s-0032-1318503.

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11

Abet, Valentina, Robert Evans, Florian Guibbal, Stefano Caldarelli e Raphaël Rodriguez. "Modular Construction of Dynamic Nucleodendrimers". Angewandte Chemie International Edition 53, n. 19 (2 aprile 2014): 4862–66. http://dx.doi.org/10.1002/anie.201402400.

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12

Loch, Jennifer A., e Robert H. Crabtree. "Rapid screening and combinatorial methods in homogeneous organometallic catalysis". Pure and Applied Chemistry 73, n. 1 (1 gennaio 2001): 119–28. http://dx.doi.org/10.1351/pac200173010119.

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Methods are discussed for rapid screening of soluble and polymer-bound homo-geneous catalysts for activity. A polymer-bound phosphine library is synthesized, and a modular tridentate pincer CNC bis-carbene Pd complex is described. The possibility of C-bound His in metalloenzymes is raised.

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13

van Slagmaat, Christian A. M. R., Khi Chhay Chou, Lukas Morick, Darya Hadavi, Burgert Blom e Stefaan M. A. De Wildeman. "Synthesis and Catalytic Application of Knölker-Type Iron Complexes with a Novel Asymmetric Cyclopentadienone Ligand Design". Catalysts 9, n. 10 (22 settembre 2019): 790. http://dx.doi.org/10.3390/catal9100790.

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Asymmetric catalysis is an essential tool in modern chemistry, but increasing environmental concerns demand the development of new catalysts based on cheap, abundant, and less toxic iron. As a result, Knölker-type catalysts have emerged as a promising class of iron catalysts for various chemical transformations, notably the hydrogenation of carbonyls and imines, while asymmetric versions are still under exploration to achieve optimal enantio-selectivities. In this work, we report a novel asymmetric design of a Knölker-type catalyst, in which the C2-rotational symmetric cyclopentadienone ligand possesses chiral substituents on the 2- and 5-positions near the active site. Four examples of the highly modular catalyst design were synthesized via standard organic procedures, and their structures were confirmed with NMR, IR, MS, and polarimetry analysis. Density functional theory (DFT) calculations were conducted to elucidate the spatial conformation of the catalysts, and therewith to rationalize the influence of structural alterations. Transfer- and H2-mediated hydrogenations were successfully established, leading to appreciable enantiomeric excesses (ee) values up to 70%. Amongst all reported Knölker-type catalysts, our catalyst design achieves one of the highest ee values for hydrogenation of acetophenone and related compounds.

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Zipse, Hendrik, Ingmar Held e Shangjie Xu. "Modular Design of Pyridine-Based Acyl-Transfer Catalysts". Synthesis 2007, n. 8 (aprile 2007): 1185–96. http://dx.doi.org/10.1055/s-2007-965973.

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15

Reuland, Steven N., Alexander P. Vlasov e Sergey A. Krupenko. "Modular organization of FDH: Exploring the basis of hydrolase catalysis". Protein Science 15, n. 5 (maggio 2006): 1076–84. http://dx.doi.org/10.1110/ps.052062806.

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16

Chen, Bin, Yunxing Zhang, Rui Wu, Dongmei Fang, Xiaozhen Chen, Simin Wang, Yuqiong Zhao et al. "Modular Synthesis of 2,8-Dioxabicyclo[3.2.1]octanes by Sequential Catalysis". ACS Catalysis 9, n. 12 (18 novembre 2019): 11788–93. http://dx.doi.org/10.1021/acscatal.9b04183.

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17

Uchida, Masaki, Kimberly McCoy, Masafumi Fukuto, Lin Yang, Hideyuki Yoshimura, Heini M. Miettinen, Ben LaFrance et al. "Modular Self-Assembly of Protein Cage Lattices for Multistep Catalysis". ACS Nano 12, n. 2 (20 novembre 2017): 942–53. http://dx.doi.org/10.1021/acsnano.7b06049.

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18

Andersen, Nalin I., Kateryna Artyushkova, Ivana Matanović, Madelaine Seow Chavez, David P. Hickey, Sofiene Abdelloui, Shelley D. Minteer e Plamen Atanassov. "Modular Microfluidic Paper‐Based Devices for Multi‐Modal Cascade Catalysis". ChemElectroChem 6, n. 9 (2 maggio 2019): 2448–55. http://dx.doi.org/10.1002/celc.201900211.

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19

Blackmore, Caroline E., Neil V. Rees e Richard E. Palmer. "Modular construction of size-selected multiple-core Pt–TiO2 nanoclusters for electro-catalysis". Physical Chemistry Chemical Physics 17, n. 42 (2015): 28005–9. http://dx.doi.org/10.1039/c5cp00285k.

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20

Đokić, Miloš, e Han Sen Soo. "Artificial photosynthesis by light absorption, charge separation, and multielectron catalysis". Chemical Communications 54, n. 50 (2018): 6554–72. http://dx.doi.org/10.1039/c8cc02156b.

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We highlight recent novel approaches in the field of artificial photosynthesis. We emphasize the potential of a highly modular plug-and-play concept that we hope will persuade the community to explore a more inclusive variety of multielectron redox catalysis to complement the proton reduction and water oxidation half-reactions in traditional solar water splitting systems.

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21

Stojanovic, Milan N., e Dmitry M. Kolpashchikov. "Modular Aptameric Sensors". Journal of the American Chemical Society 126, n. 30 (agosto 2004): 9266–70. http://dx.doi.org/10.1021/ja032013t.

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22

Mann, Samuel I., Tillmann Heinisch, Andrew C. Weitz, Michael P. Hendrich, Thomas R. Ward e A. S. Borovik. "Modular Artificial Cupredoxins". Journal of the American Chemical Society 138, n. 29 (14 luglio 2016): 9073–76. http://dx.doi.org/10.1021/jacs.6b05428.

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23

Barluenga, Sofia, Pilar Lopez, Emilie Moulin e Nicolas Winssinger. "Modular Asymmetric Synthesis of Pochonin C". Angewandte Chemie International Edition 43, n. 26 (28 giugno 2004): 3467–70. http://dx.doi.org/10.1002/anie.200454108.

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24

Mesnage, Stéphane, e Agnès Fouet. "Plasmid-Encoded Autolysin in Bacillus anthracis: Modular Structure and Catalytic Properties". Journal of Bacteriology 184, n. 1 (1 gennaio 2002): 331–34. http://dx.doi.org/10.1128/jb.184.1.331-334.2002.

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ABSTRACT A Bacillus anthracis virulence plasmid-encoded peptidoglycan hydrolase (AmiA) with sequence similarity to N-acetylmuramoyl-l-alanine amidases hydrolyzes peptidoglycan independently of cell wall binding. Residues H341, E355, H415, and E486 are absolutely required for catalysis. Many AmiA paralogs are fused to different sorting signals, suggesting that these modular proteins result from domain shuffling.

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25

Yang, Hai-Bin, Zhi-Hou Wang, Jin-Mei Li e Chuande Wu. "Modular synthesis of α-aryl β-perfluoroalkyl ketones via N-heterocyclic carbene catalysis". Chemical Communications 56, n. 26 (2020): 3801–4. http://dx.doi.org/10.1039/d0cc00293c.

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26

Stibingerova, Iva, Svatava Voltrova, Sarka Kocova, Matthew Lindale e Jiri Srogl. "Modular Approach to Heterogenous Catalysis. Manipulation of Cross-Coupling Catalyst Activity". Organic Letters 18, n. 2 (30 dicembre 2015): 312–15. http://dx.doi.org/10.1021/acs.orglett.5b03480.

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27

Jacobsen, Christian Borch, Daniel Steen Nielsen, Morten Meldal e Frederik Diness. "Azotides as Modular Peptide-Based Ligands for Asymmetric Lewis Acid Catalysis". Journal of Organic Chemistry 84, n. 11 (29 aprile 2019): 6940–45. http://dx.doi.org/10.1021/acs.joc.9b00732.

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28

Hahn, Björn T, Friederike Tewes, Roland Fröhlich e Frank Glorius. "Olefin-Oxazolines (OlefOx): Highly Modular, Easily Tunable Ligands for Asymmetric Catalysis". Angewandte Chemie International Edition 49, n. 6 (1 febbraio 2010): 1143–46. http://dx.doi.org/10.1002/anie.200905712.

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29

Pandey, Ramesh Prasad, e Jae Kyung Sohng. "In Vitro Type I Modular Polyketide Synthase Catalysis for New Antibiotics". Bulletin of the Korean Chemical Society 39, n. 4 (1 marzo 2018): 421–22. http://dx.doi.org/10.1002/bkcs.11416.

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30

Reed, Kevin B., e Hal S. Alper. "Modular biocatalysis for polyamines". Nature Catalysis 4, n. 6 (giugno 2021): 449–50. http://dx.doi.org/10.1038/s41929-021-00636-8.

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31

Zhang, Bohan, Silei Bai, Xiangyu Chao, Tong Wu, Zhiyong Chen, Zehong Cheng, Yue Xiao, Ke Zhang e Yugang Bai. "Molecularly pure miktoarm spherical nucleic acids: preparation and usage as a scaffold for abiotic intracellular catalysis". Chemical Science 12, n. 48 (2021): 15843–48. http://dx.doi.org/10.1039/d1sc04833c.

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32

Casertano, Marcello, Brian G. Kelly, Malachi W. Gillick-Healy, Paolo Grieco e Mauro F. A. Adamo. "Synthesis of Indole-Based Derivatives Containing Ammonium Salts, Diamines and Aminoureas for Organocatalysis". Organics 6, n. 2 (2 aprile 2025): 15. https://doi.org/10.3390/org6020015.

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Indole heterocycles have an established reactivity, and these compounds are H-bond donors via a peculiar non-basic NH. However, the indole core has been scarcely employed in organocatalysis, with only a few examples relevant to electrophilic halogenation reported. To expand the range of potential transformations achievable via indole catalysis, we have designed a set of new organic species incorporating an indole core, alongside three privelaged chiral moieties found in many known organocatalysts, namely a quaternary ammonium salt, a diamine and an amino-urea. Herein, we report an optimised synthetic route for the preparation of these potential catalytic species in an enantiomerically pure form. The syntheses are conceived to be modular and therefore will allow each of the three single organic catalysts to be expanded into families without alteration of the synthetic layout, therefore leading to a fast optimisation of new asymmetric procedures.

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33

Straub, Bernd, Michael Bessel e Frank Rominger. "Modular Trimethylene-Linked Bisimidazol(in)ium Salts". Synthesis 2010, n. 09 (12 marzo 2010): 1459–66. http://dx.doi.org/10.1055/s-0029-1218702.

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34

Hirschhäuser, Christoph, Claire A. Haseler e Timothy Gallagher. "Core Modification of Cytisine: A Modular Synthesis". Angewandte Chemie International Edition 50, n. 22 (21 aprile 2011): 5162–65. http://dx.doi.org/10.1002/anie.201100441.

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35

Szymański, Wiktor, Willem A. Velema e Ben L. Feringa. "Photocaging of Carboxylic Acids: A Modular Approach". Angewandte Chemie International Edition 53, n. 33 (6 maggio 2014): 8682–86. http://dx.doi.org/10.1002/anie.201402665.

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36

Tanaka, Yoshie, Hiroshi Katagiri, Yoshio Furusho e Eiji Yashima. "A Modular Strategy to Artificial Double Helices". Angewandte Chemie International Edition 44, n. 25 (20 giugno 2005): 3867–70. http://dx.doi.org/10.1002/anie.200501028.

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37

Xu, Kaidi, Zhi‐Yuan Zhang, Chengmao Yu, Bin Wang, Ming Dong, Xianqiang Zeng, Rui Gou, Lei Cui e Chunju Li. "A Modular Synthetic Strategy for Functional Macrocycles". Angewandte Chemie International Edition 59, n. 18 (5 marzo 2020): 7214–18. http://dx.doi.org/10.1002/anie.202000909.

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38

Paul, Avishek, Eliza M. Warszawik, Mark Loznik, Arnold J. Boersma e Andreas Herrmann. "Modular and Versatile Trans‐Encoded Genetic Switches". Angewandte Chemie International Edition 59, n. 46 (27 luglio 2020): 20328–32. http://dx.doi.org/10.1002/anie.202001372.

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39

Nagy, Krisztina S., Krisztina Toth, Eva Pallinger, Angela Takacs, Laszlo Kohidai, Angela Jedlovszky-Hajdu, Domokos Mathe et al. "Folate-Targeted Monodisperse PEG-Based Conjugates Made by Chemo-Enzymatic Methods for Cancer Diagnosis and Treatment". International Journal of Molecular Sciences 22, n. 19 (26 settembre 2021): 10347. http://dx.doi.org/10.3390/ijms221910347.

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This paper focuses on preliminary in vitro and in vivo testing of new bivalent folate-targeted PEGylated doxorubicin (DOX) made by modular chemo-enzymatic processes (FA2-dPEG-DOX2). A unique feature is the use of monodisperse PEG (dPEG). The modular approach with enzyme catalysis ensures exclusive γ-conjugation of folic acid, full conversion and selectivity, and no metal catalyst residues. Flow cytometry analysis showed that at 10 µM concentration, both free DOX and FA2-dPEG-DOX2 would be taken up by 99.9% of triple-negative breast cancer cells in 2 h. Intratumoral injection to mice seemed to delay tumor growth more than intravenous delivery. The mouse health status, food, water consumption, and behavior remained unchanged during the observation.

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Woods, R. Jeremy, Justin O. Brower, Elena Castellanos, Mehrnoosh Hashemzadeh, Omid Khakshoor, Wade A. Russu e James S. Nowick. "Cyclic Modular β-Sheets". Journal of the American Chemical Society 129, n. 9 (marzo 2007): 2548–58. http://dx.doi.org/10.1021/ja0667965.

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41

Oltra, Núria Sancho, e Gerard Roelfes. "Modular assembly of novel DNA-based catalysts". Chemical Communications, n. 45 (2008): 6039. http://dx.doi.org/10.1039/b814489c.

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42

Beaupérin, Matthieu, Radomyr Smaliy, Hélène Cattey, Philippe Meunier, Jun Ou, Patrick H. Toy e Jean-Cyrille Hierso. "Modular functionalized polyphosphines for supported materials: previously unobserved31P-NMR «through-space» ABCD spin systems and heterogeneous palladium-catalysed C–C and C–H arylation". Chem. Commun. 50, n. 67 (2014): 9505–8. http://dx.doi.org/10.1039/c4cc04307c.

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43

Evans, P. Andrew, Mai-Jan Tom e Ben W. H. Turnbull. "A Concise and Modular Three-Step Synthesis of (S)-Verapamil using an Enantioselective Rhodium-Catalyzed Allylic Alkylation Reaction". Synthesis 52, n. 15 (5 giugno 2020): 2185–89. http://dx.doi.org/10.1055/s-0040-1707390.

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A concise and modular asymmetric synthesis of the calcium channel blocker (S)-verapamil is described. This approach employs an enantioselective rhodium-catalyzed allylic alkylation reaction between an α-isopropyl-substituted benzylic nitrile and allyl benzoate to construct the challenging acyclic quaternary stereocenter. The terminal olefin then serves as a convenient synthetic handle for a hydroamination to introduce the phenethylamine moiety, furnishing (S)-verapamil in three steps and 55% overall yield, thus providing the most efficient synthesis of this important pharmaceutical reported to date. Furthermore, given the modular nature of the synthesis, it can be readily modified to prepare structurally related bioactive agents.

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Peng, Yaguang, Qiang Tan, Hongliang Huang, Qinggong Zhu, Xinchen Kang, Chongli Zhong e Buxing Han. "Customization of functional MOFs by a modular design strategy for target applications". Chemical Synthesis 2, n. 3 (2022): 15. http://dx.doi.org/10.20517/cs.2022.15.

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Herein, we propose a versatile “functional modular assembly” strategy for customizing MOFs that allows installing the desired functional unit into a host material. The functional unit could be switched according to different applications. MOF-808, a highly stable Zr-MOF containing dangling formate groups, was selected as a host material for demonstration. Functional molecules with carboxyl connectors can be directly inserted into MOF-808 to form functional modular MOFs (FM-MOFs) through single substitution, while for those without carboxyl connectors, a pre-designed convertor was grafted firstly followed by the functional molecules in a stepwise manner. A series of tailor-made FM-MOFs were generated and show excellent performance toward different applications, such as adsorption, catalysis, fluorescent sensing, electrochemistry, and the control of surface wettability. On the other hand, the functional units on the FM-MOFs can switch freely and completely via full interconversion, as well as partly to construct multivariate MOFs (MTV-MOFs). Therefore, this strategy provides a benchmark for rapid customization of functional MOFs for diverse applications that can realize the rapid modular design of materials.

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Taniguchi, Ryo, Naoki Noto, Seiya Tanaka, Keigo Takahashi, Sujan K. Sarkar, Ryoko Oyama, Manabu Abe, Takashi Koike e Munetaka Akita. "Simple generation of various α-monofluoroalkyl radicals by organic photoredox catalysis: modular synthesis of β-monofluoroketones". Chemical Communications 57, n. 21 (2021): 2609–12. http://dx.doi.org/10.1039/d0cc08060h.

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Talbot, Fabien J. T., Shibo Zhang, Bishnupada Satpathi, Gareth P. Howell, Gregory J. P. Perry, Giacomo E. M. Crisenza e David J. Procter. "Modular Synthesis of Stereodefined Benzocyclobutene Derivatives via Sequential Cu- and Pd-Catalysis". ACS Catalysis 11, n. 23 (16 novembre 2021): 14448–55. http://dx.doi.org/10.1021/acscatal.1c04496.

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Dong, Zhe, Gang Lu, Jianchun Wang, Peng Liu e Guangbin Dong. "Modular ipso/ortho Difunctionalization of Aryl Bromides via Palladium/Norbornene Cooperative Catalysis". Journal of the American Chemical Society 140, n. 27 (15 giugno 2018): 8551–62. http://dx.doi.org/10.1021/jacs.8b04153.

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48

Liu, Haoying, Weijun Tang, Jianliang Xiao e Chao Wang. "Cyclometallated Chiral Ru Complexes with a Single Labile Coordination Site for Asymmetric Reduction of Amino Ketones". Organic Chemistry Frontiers, 2025. https://doi.org/10.1039/d5qo00284b.

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Abstract (sommario):

The development of versatile and selective catalysts is crucial for asymmetric catalysis. Modular chiral Ru complexes featuring a single labile coordination site (SLCS) and cyclometallation have been designed and synthesized....

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van Koten, Gerard, Arjan W. Kleij, Rob van de Coevering, Martin Albrecht, Neldes J. Hovestad, Jaap Boersma e Robertus J. M. Klein Gebbink. "Modular Approaches Towards Metallodendritic Homogeneous Catalysis". ChemInform 34, n. 27 (8 luglio 2003). http://dx.doi.org/10.1002/chin.200327262.

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Matich, Olivia, Mohinder Maheshbhai Naiya, Joanne Salam, Bryan Andres Tiban Anrango e Jack Li-Yang Chen. "Modular Assembly and Optimization of an Artificial Esterase from Functionalized Surfactants". ChemCatChem, 21 giugno 2024. http://dx.doi.org/10.1002/cctc.202400945.

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Abstract (sommario):

A strategy for the screening and optimization of an artificial esterase is presented that utilizes the self‐assembly of amphiphilic molecules. Unlike conventional approaches that rely on the attachment of key functional groups onto molecular scaffolds or surfaces, the modular assembly of amphiphiles allows a large number of catalytic combinations to be investigated with minimal synthetic effort. In this study, iterative combinatorial screens led to an optimized esterase comprising amphiphiles that act as a nucleophilic catalyst, an oxyanion hole and a metal ion chelator. Cooperativity is observed between the functional headgroups of the amphiphiles, an effect which is diminished when co‐assembled with non‐functionalized surfactants. Assessment of the catalytic efficiency (kcat/KM) of our optimized catalysts against recently reported artificial esterases shows comparable efficiency, indicating that efficient catalysis is possible with dynamic self‐assembled systems despite the absence of pre‐defined rigid binding pockets.

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