1
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Kalita N, Crawley MR, Rosch LE, Szeglowski O, Cook TR. Exploring the Te(II)/Te(IV) Redox Couple of a Tellurorosamine Chromophore: Photophysical, Photochemical, and Electrochemical Studies. Inorg Chem 2024; 63:13157-13165. [PMID: 38989980 DOI: 10.1021/acs.inorgchem.4c01077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/12/2024]
Abstract
A tellurorosamine dye [Te(II)] undergoes aerobic photooxidation. Although Te(IV) species have been used in a number of oxidations, key Te(IV)-oxo and Te(IV)-bis(hydroxy) intermediates are challenging to study. Under aerobic irradiation with visible light, Te(II) (λmax = 600 nm) transforms into a Te(IV) species (λmax = 669 nm). The resultant Te(IV) species is not stable in the dark or at -20 °C, decomposing back to Te(II) and other byproducts over many hours. To eliminate the structural ambiguity of the Te(IV) photoproduct, we used spectroelectrochemistry, wherein the bis(hydroxy) Te(IV)-(OH)2 was electrochemically generated under anaerobic conditions. The absorption of Te(IV)-(OH)2 matches that of the Te(IV) photoproduct. Because isosbestic points are maintained both photochemically and electrochemically, the oxo core formed photochemically must rapidly equilibrate with Te(IV)-(OH)2. Calculations on the bis(hydroxy) versus oxo species further corroborate that the equilibration is rapid and the spectra of the two species are similar. To further explore Te(IV) cores, two novel compounds, Te(IV)-Cl2 and Te(IV)-Br2, were synthesized. Characterization of Te(IV)-X2 was simplified because these cores have no analogue to the Te(IV)-(O)/Te(IV)-(OH)2 equilibrium. This work provides insights into the photophysical and electrochemical behavior of Te analogues of chalcogenoxanthylium dyes, which are relevant for a broad range of photochemical applications.
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Affiliation(s)
- Nayanika Kalita
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260, United States
| | - Matthew R Crawley
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260, United States
| | - Lauren E Rosch
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260, United States
| | - Owen Szeglowski
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260, United States
| | - Timothy R Cook
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260, United States
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2
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Sellet N, Clement-Comoy L, Elhabiri M, Cormier M, Goddard JP. Second Generation of Near-Infrared Cyanine-Based Photocatalysts for Faster Organic Transformations. Chemistry 2023; 29:e202302353. [PMID: 37688503 DOI: 10.1002/chem.202302353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 09/04/2023] [Accepted: 09/04/2023] [Indexed: 09/11/2023]
Abstract
A second generation of cyanine-based near-infrared photocatalysts has been developed to accelerate organic transformations. Cyanines were prepared and fully characterized prior to evaluation of their photocatalytic activities. Catalyst efficiency was determined by using two model oxidation and reduction reactions. For the aza-Henry reaction, cyanines bearing an amino group on the heptamethine chain led to the best results. For trifluoromethylation, the stability of the photocatalyst was found to be the key parameter for efficient and rapid conversion.
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Affiliation(s)
- Nicolas Sellet
- Laboratoire d'Innovation Moléculaire et Applications (LIMA), UMR 7042, Université de Haute-Alsace (UHA), Université de Strasbourg, CNRS, 68100, Mulhouse, France
| | - Leo Clement-Comoy
- Laboratoire d'Innovation Moléculaire et Applications (LIMA), UMR 7042, Université de Haute-Alsace (UHA), Université de Strasbourg, CNRS, 68100, Mulhouse, France
| | - Mourad Elhabiri
- Laboratoire d'Innovation Moléculaire et Applications (LIMA), Bioorganic and MUMR 7042, Université de Strasbourg, Université de Haute-Alsace (UHA), CNRS, Team Bio(IN)organic and Medicinal Chemistry, European School of Chemistry, Polymers and Materials (ECPM), 67087, Strasbourg, France
| | - Morgan Cormier
- Laboratoire d'Innovation Moléculaire et Applications (LIMA), UMR 7042, Université de Haute-Alsace (UHA), Université de Strasbourg, CNRS, 68100, Mulhouse, France
| | - Jean-Philippe Goddard
- Laboratoire d'Innovation Moléculaire et Applications (LIMA), UMR 7042, Université de Haute-Alsace (UHA), Université de Strasbourg, CNRS, 68100, Mulhouse, France
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3
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Sellet N, Sebbat M, Elhabiri M, Cormier M, Goddard JP. Squaraines as near-infrared photocatalysts for organic reactions. Chem Commun (Camb) 2022; 58:13759-13762. [PMID: 36416727 DOI: 10.1039/d2cc04707a] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Herein, unprecedented uses of squaraine derivatives as new organic near-infrared photocatalysts are reported. These efficient molecular tools are able to promote oxidation and reduction for organic transformations through photocatalytic conditions. A mechanistic investigation is performed to distinguish between competitive Single Electron Transfer and Energy Transfer pathways.
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Affiliation(s)
- Nicolas Sellet
- Laboratoire d'Innovation Moléculaire et Applications (LIMA), UMR 7042, Université de Haute-Alsace (UHA), Université de Strasbourg, CNRS, Mulhouse 68100, France.
| | - Malik Sebbat
- Laboratoire d'Innovation Moléculaire et Applications (LIMA), UMR 7042, Université de Haute-Alsace (UHA), Université de Strasbourg, CNRS, Mulhouse 68100, France.
| | - Mourad Elhabiri
- Université de Strasbourg-CNRS-UHA UMR7042, Laboratoire d'Innovation Moléculaire et Applications (LIMA), Team Bio(IN)organic and Medicinal Chemistry, European School of Chemistry, Polymers and Materials (ECPM), 25 Rue Becquerel, Strasbourg F-67087, France
| | - Morgan Cormier
- Laboratoire d'Innovation Moléculaire et Applications (LIMA), UMR 7042, Université de Haute-Alsace (UHA), Université de Strasbourg, CNRS, Mulhouse 68100, France.
| | - Jean-Philippe Goddard
- Laboratoire d'Innovation Moléculaire et Applications (LIMA), UMR 7042, Université de Haute-Alsace (UHA), Université de Strasbourg, CNRS, Mulhouse 68100, France.
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4
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Sau S, Mal P. Visible-Light Promoted Regioselective Oxygenation of Quinoxalin-2(1 H)-ones Using O 2 as an Oxidant. J Org Chem 2022; 87:14565-14579. [PMID: 36214497 DOI: 10.1021/acs.joc.2c01960] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A visible-light-mediated sustainable approach for metal-free oxygenation of quinoxalin-2(1H)-one by employing Mes-Acr-MeClO4 as a photocatalyst without using any additive or cocatalyst is reported here. O2 served as the eco-friendly and green oxidant source for this conversion. In addition, the protocol exhibited high regioselectivity and tolerance toward a broad spectrum of functional groups to furnish quinoxaline-2,3-diones in good to excellent yields.
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Affiliation(s)
- Sudip Sau
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), An OCC of Homi Bhaba National Institute, Bhubaneswar, PO Bhimpur-Padanpur, Via Jatni, District Khurda, Odisha 752050, India
| | - Prasenjit Mal
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), An OCC of Homi Bhaba National Institute, Bhubaneswar, PO Bhimpur-Padanpur, Via Jatni, District Khurda, Odisha 752050, India
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5
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Bjerg EE, Marchán-García J, Buxaderas E, Moglie Y, Radivoy G. Oxidative α-Functionalization of 1,2,3,4-Tetrahydroisoquinolines Catalyzed by a Magnetically Recoverable Copper Nanocatalyst. Application in the Aza-Henry Reaction and the Synthesis of 3,4-Dihydroisoquinolones. J Org Chem 2022; 87:13480-13493. [PMID: 36154121 DOI: 10.1021/acs.joc.2c01782] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The oxidative α-functionalization of 2-aryl-1,2,3,4-tetrahydroisoquinolines (THIQs) promoted by a versatile heterogeneous nanocatalyst consisting of copper nanoparticles immobilized on silica-coated maghemite (CuNPs/MagSilica) has been accomplished. The methodology was successfully applied in the cross-dehydrogenative coupling (CDC) reaction of N-aryl THIQs and other tertiary amines with nitromethane as a pro-nucleophile (aza-Henry reaction) and the α-oxidation of THIQs with O2 as a green oxidant. Phosphite, alkyne, or indole derivatives were also shown to be suitable candidates for their use as pro-nucleophiles in the CDC reaction with THIQs. The catalyst, with very low copper loading (0.4-1.0 mol % Cu), could be easily recovered by means of an external magnet and reused in four cycles without significant loss of activity.
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Affiliation(s)
- Esteban E Bjerg
- Instituto de Química del Sur, INQUISUR (CONICET-UNS), Departamento de Química, Universidad Nacional del Sur, Avenida Alem 1253, 8000 Bahía Blanca, Argentina
| | - Joaquín Marchán-García
- Instituto de Química del Sur, INQUISUR (CONICET-UNS), Departamento de Química, Universidad Nacional del Sur, Avenida Alem 1253, 8000 Bahía Blanca, Argentina
| | - Eduardo Buxaderas
- Instituto de Química del Sur, INQUISUR (CONICET-UNS), Departamento de Química, Universidad Nacional del Sur, Avenida Alem 1253, 8000 Bahía Blanca, Argentina
| | - Yanina Moglie
- Instituto de Química del Sur, INQUISUR (CONICET-UNS), Departamento de Química, Universidad Nacional del Sur, Avenida Alem 1253, 8000 Bahía Blanca, Argentina
| | - Gabriel Radivoy
- Instituto de Química del Sur, INQUISUR (CONICET-UNS), Departamento de Química, Universidad Nacional del Sur, Avenida Alem 1253, 8000 Bahía Blanca, Argentina
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6
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Elavarasan S, Preety J, Abinaya R, Saravanan T, Balasunramaniam KK, Venkatramaiah N, Baskar B. Visible Light Driven Metal-Free Photoredox Catalyzed α-benzylation and α-oxygenation of N-substituted tetrahydroisoquinolines: Applications to Synthesis of Natural Products. Chem Asian J 2022; 17:e202200878. [PMID: 36073541 DOI: 10.1002/asia.202200878] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 09/06/2022] [Indexed: 11/07/2022]
Abstract
Herein, visible light mediated organophoto redox catalysed simple and convenient method for the a-benzylation and a-oxygenation of tertiary amines is demonstrated. Synthesis of novel thiophenol based donor acceptor organophotoredox catalysts 4a - 4d were investigated along with commercial catalyst 4-CzIPN ( 4e ). A diverse biologically active a-benzylated tetrahydroisoquinolines and natural products such as (±)-Norlaudanosine, (±)-laudanosine and (±)-xylopinine have been synthesized under the optimized conditions in yields ranging from from 62-91%. Exploitation of synthesized a-benzylated compound using present phtoredox catalyzed conditions gave rise to dehydyrogenative benzylic oxidation product under oxygen atmosphere which is known to display biologically and structurally important properties. Also, various N-protected tertiary amines were found to be suitable for the a-oxygenation reactions using catalyst 4e and resulted in good yields (61-85%).
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Affiliation(s)
- S Elavarasan
- SRM Institute of Science and Technology, Chemistry, INDIA
| | - J Preety
- SRM Institute of Science and Technology, Chemistry, INDIA
| | - R Abinaya
- SRM Institute of Science and Technology, Chemistry, INDIA
| | - T Saravanan
- University of Hyderabad, School of Chemistry, INDIA
| | | | | | - Baburaj Baskar
- SRM University, Chemistry, Kattankulathur, 603203, India, 603203, Chennai, INDIA
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7
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Photosensitized selective semi-oxidation of tetrahydroisoquinoline: a singlet oxygen path. Photochem Photobiol Sci 2022; 21:1473-1479. [PMID: 35583722 DOI: 10.1007/s43630-022-00237-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2022] [Accepted: 04/22/2022] [Indexed: 10/18/2022]
Abstract
Selective semi-oxidation of tetrahydroisoquinoline (THIQ) leads to a valuable dihydroisoquinoline (DHIQ) derivative via singlet oxygen photooxidation process. Typical photosensitisers (i.e., Ru complexes) can activate the reaction even under heterogeneous conditions that facilitate catalyst separation and reusability. In contrast to DHIQ, THIQ acts as an efficient singlet oxygen quencher driving the reaction selectivity. The reaction can also be facilitated by semiconductor catalysts such as MoCo@GW, a glass wool-based catalyst that is easy to separate and reuse and compatible with flow photochemistry. Its role is to mediate the formation of isoquinoline (IQ) and thus an in situ-generated singlet oxygen catalyst. Laser flash photolysis with NIR detection provides proof of the singlet oxygen mechanism proposed and rate constants for the key steps that mediate the oxidation.
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8
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Katsurayama Y, Ikabata Y, Maeda H, Segi M, Nakai H, Furuyama T. Direct Near Infrared Light-Activatable Phthalocyanine Catalysts. Chemistry 2021; 28:e202103223. [PMID: 34734432 DOI: 10.1002/chem.202103223] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Indexed: 12/29/2022]
Abstract
The high penetration of near-infrared (NIR) light makes it effective for use in selective reactions under light-shielded conditions, such as in sealed reactors and deep tissues. Herein, we report the development of phthalocyanine catalysts directly activated by NIR light to transform small organic molecules. The desired photocatalytic properties were achieved in the phthalocyanines by introducing the appropriate peripheral substituents and central metal. These phthalocyanine photocatalysts promote cross-dehydrogenative-coupling (CDC) under irradiation with 810 nm NIR light. The choice of solvent is important, and a mixture of a reaction-accelerating (pyridine) and -decelerating (methanol) solvents was particularly effective. Moreover, we demonstrate photoreactions under visible-light-shielded conditions through the transmission of NIR light. A combined experimental and computational mechanistic analysis revealed that this NIR reaction does not involve a photoredox-type mechanism with electron transfer, but instead a singlet-oxygen-mediated mechanism with energy transfer.
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Affiliation(s)
- Yoshino Katsurayama
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa, 920-1192, Japan
| | - Yasuhiro Ikabata
- Waseda Research Institute for Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo, 169-8555, Japan.,Information and Media Center, Toyohashi University of Technology, Toyohashi, Aichi, 441-8580, Japan.,Department of Computer Science and Engineering, Toyohashi University of Technology, Toyohashi, Aichi, 441-8580, Japan
| | - Hajime Maeda
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa, 920-1192, Japan
| | - Masahito Segi
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa, 920-1192, Japan
| | - Hiromi Nakai
- Waseda Research Institute for Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo, 169-8555, Japan.,Department of Chemistry and Biochemistry School of Advanced Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo, 169-8555, Japan.,Elements Strategy Initiative for Catalysts and Batteries (ESICB), Kyoto University Katsura, Kyoto, 615-8520, Japan
| | - Taniyuki Furuyama
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa, 920-1192, Japan.,Japan Science and Technology Agency (JST)-PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama, 332-0012, Japan
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9
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Wang F, Yu D, Chen Y, Sun J, Wang JY, Zhou MD. Cross-dehydrogenative Coupling of N-Aryl Tetrahydroisoquinolines Catalyzed by an Anthraquinone-containing Polymeric Photosensitizer. Chem Asian J 2021; 16:4087-4094. [PMID: 34668333 DOI: 10.1002/asia.202100978] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 10/19/2021] [Indexed: 11/09/2022]
Abstract
This work reports the photocatalytic application of an anthraquinone-containing polymeric photosensitizer (AQ-PHEMA) in the visible light-induced cross-dehydrogenative-coupling of N-aryl tetrahydroisoquinolines with several nucleophiles, including nitromethane, 1-methyl-2-alkyl ketone and dialkyl (aryl) phosphine oxide. The results revealed that the reaction could be catalyzed by AQ-PHEMA efficiently to afford a series of 1-substituted-2-aryl-1,2,3,4-tetrahydroisoquinolines in good to excellent yields with nice substrate tolerance under aerobic conditions at room temperature. The practical application potential was also showcased by a gram-scale synthesis. More importantly, the utilization of AQ-PHEMA as a heterogeneous photosensitizer also showed nice recyclability and reusability of the catalyst, whereas AQ-PHEMA can be easily separated and reused for at least 8 times without significant loss of photocatalytic activity.
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Affiliation(s)
- Fei Wang
- School of Petrochemical Engineering, Liaoning Petrochemical University, 113001, Dan Dong Road 1, Fushun, P. R. China
| | - Dan Yu
- School of Petrochemical Engineering, Liaoning Petrochemical University, 113001, Dan Dong Road 1, Fushun, P. R. China
| | - Yang Chen
- School of Petrochemical Engineering, Liaoning Petrochemical University, 113001, Dan Dong Road 1, Fushun, P. R. China
| | - Jing Sun
- School of Petrochemical Engineering, Liaoning Petrochemical University, 113001, Dan Dong Road 1, Fushun, P. R. China
| | - Jing-Yun Wang
- School of Petrochemical Engineering, Liaoning Petrochemical University, 113001, Dan Dong Road 1, Fushun, P. R. China
| | - Ming-Dong Zhou
- School of Petrochemical Engineering, Liaoning Petrochemical University, 113001, Dan Dong Road 1, Fushun, P. R. China
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10
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Guo X, Rabeah J, Sun R, Wang D, Mejía E. Fluorescent Hybrid Porous Polymers as Sustainable Heterogeneous Photocatalysts for Cross-Dehydrogenative Coupling Reactions. ACS APPLIED MATERIALS & INTERFACES 2021; 13:42889-42897. [PMID: 34467763 DOI: 10.1021/acsami.1c12377] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
A series of hybrid porous polymers (HPPs) based on polyhedral oligomeric silsesquioxane (POSS) were synthesized, characterized, and successfully used as metal-free heterogeneous photocatalysts for cross-dehydrogenative coupling reactions (CDC), for which the aza-Henry coupling of tetrahydroisoquinolines and nitroalkanes was studied as the model reaction. The reactions run smoothly at room temperature under visible (blue) light irradiation using gaseous oxygen as an oxidant under atmospheric pressure. These novel metal-free heterogeneous photocatalysts can be readily recovered and reused without a significant loss of reactivity. Mechanistic investigations revealed the intermediacy of 1O2, obtained from 3O2 sensitization (energy transfer) by the photoexcited catalyst.
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Affiliation(s)
- Xuewen Guo
- Leibniz Institute for Catalysis (LIKAT), Albert-Einstein-Str. 29a, Rostock 18059, Germany
| | - Jabor Rabeah
- Leibniz Institute for Catalysis (LIKAT), Albert-Einstein-Str. 29a, Rostock 18059, Germany
| | - Ruixue Sun
- National Engineering Research Center for Colloidal Materials & Key Laboratory of Special Functional Aggregated Materials Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, P. R. China
| | - Dengxu Wang
- National Engineering Research Center for Colloidal Materials & Key Laboratory of Special Functional Aggregated Materials Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, P. R. China
| | - Esteban Mejía
- Leibniz Institute for Catalysis (LIKAT), Albert-Einstein-Str. 29a, Rostock 18059, Germany
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11
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Castro KA, Rodrigues JM, Faustino M, Tomé JP, Cavaleiro JA, Neves MDGP, Simões MM. Photocatalytic degradation of methyl orange mediated by a silica coated nanomagnet porphyrin hybrid. J Organomet Chem 2021. [DOI: 10.1016/j.jorganchem.2021.121751] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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12
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Kumar I, Thakur A, Manisha, Sharma U. α-Oxygenation of N-aryl/alkyl heterocyclic compounds via ruthenium photocatalysis. REACT CHEM ENG 2021. [DOI: 10.1039/d1re00200g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
We herein report ruthenium(iii) photocatalyzed oxidation of N-aryl tertiary amines to the corresponding amides.
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Affiliation(s)
- Inder Kumar
- Chemical Technology Division, CSIR-Institute of Himalayan Bioresource and Technology, Palampur 176061, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Ankita Thakur
- Chemical Technology Division, CSIR-Institute of Himalayan Bioresource and Technology, Palampur 176061, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Manisha
- Chemical Technology Division, CSIR-Institute of Himalayan Bioresource and Technology, Palampur 176061, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Upendra Sharma
- Chemical Technology Division, CSIR-Institute of Himalayan Bioresource and Technology, Palampur 176061, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
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13
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Unglaube F, Hünemörder P, Guo X, Chen Z, Wang D, Mejía E. Phenazine Radical Cations as Efficient Homogeneous and Heterogeneous Catalysts for the Cross‐Dehydrogenative Aza‐
Henry
Reaction. Helv Chim Acta 2020. [DOI: 10.1002/hlca.202000184] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Felix Unglaube
- Leibniz Institute for Catalysis Albert-Einstein-Str. 29a DE-18059 Rostock Germany
| | - Paul Hünemörder
- Leibniz Institute for Catalysis Albert-Einstein-Str. 29a DE-18059 Rostock Germany
| | - Xuewen Guo
- Leibniz Institute for Catalysis Albert-Einstein-Str. 29a DE-18059 Rostock Germany
| | - Zixu Chen
- Key Laboratory of Special Functional Aggregated Materials, Ministry of Education, School of Chemistry and Chemical Engineering Shandong University Jinan 250100 P. R. China
| | - Dengxu Wang
- Key Laboratory of Special Functional Aggregated Materials, Ministry of Education, School of Chemistry and Chemical Engineering Shandong University Jinan 250100 P. R. China
| | - Esteban Mejía
- Leibniz Institute for Catalysis Albert-Einstein-Str. 29a DE-18059 Rostock Germany
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14
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Rangarajan G, Yan N, Farnood R. High‐performance photocatalysts for the selective oxidation of alcohols to carbonyl compounds. CAN J CHEM ENG 2020. [DOI: 10.1002/cjce.23835] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Goutham Rangarajan
- Department of Chemical Engineering & Applied Chemistry University of Toronto Toronto Ontario Canada
| | - Ning Yan
- Department of Chemical and Biomolecular Engineering National University of Singapore Singapore Singapore
| | - Ramin Farnood
- Department of Chemical Engineering & Applied Chemistry University of Toronto Toronto Ontario Canada
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15
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Deka R, Sarkar A, Butcher RJ, Junk PC, Turner DR, Deacon GB, Singh HB. Isolation of Homoleptic Dicationic Tellurium and Monocationic Bismuth Analogues of Non-N-Heterocyclic Carbene Derivatives. Organometallics 2020. [DOI: 10.1021/acs.organomet.9b00698] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Rajesh Deka
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai 400076, India
- IITB-Monash Research Academy, Powai, Mumbai 400076, India
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia
| | - Arup Sarkar
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai 400076, India
| | - Ray J. Butcher
- Department of Chemistry, Howard University, Washington, DC 20059, United States
| | - Peter C. Junk
- IITB-Monash Research Academy, Powai, Mumbai 400076, India
- College of Science & Engineering, James Cook University, Townsville 4811, QLD, Australia
| | - David R. Turner
- IITB-Monash Research Academy, Powai, Mumbai 400076, India
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia
| | - Glen B. Deacon
- IITB-Monash Research Academy, Powai, Mumbai 400076, India
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia
| | - Harkesh B. Singh
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai 400076, India
- IITB-Monash Research Academy, Powai, Mumbai 400076, India
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16
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Li C, Dickson R, Rockstroh N, Rabeah J, Cordes DB, Slawin AMZ, Hünemörder P, Spannenberg A, Bühl M, Mejía E, Zysman-Colman E, Kamer PCJ. Ligand electronic fine-tuning and its repercussion on the photocatalytic activity and mechanistic pathways of the copper-photocatalysed aza-Henry reaction. Catal Sci Technol 2020. [DOI: 10.1039/d0cy01221a] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Subtle electronic ligand effects have a strong impact on the mechanistic pathway of a photocatalytic coupling reaction.
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Affiliation(s)
- Chenfei Li
- Organic Semiconductor Centre
- EaStCHEM School of Chemistry
- University of St Andrews
- KY16 9ST St Andrews
- UK
| | - Robert Dickson
- Organic Semiconductor Centre
- EaStCHEM School of Chemistry
- University of St Andrews
- KY16 9ST St Andrews
- UK
| | | | - Jabor Rabeah
- Leibniz Institute for Catalysis
- 18059 Rostock
- Germany
| | - David B. Cordes
- Organic Semiconductor Centre
- EaStCHEM School of Chemistry
- University of St Andrews
- KY16 9ST St Andrews
- UK
| | - Alexandra M. Z. Slawin
- Organic Semiconductor Centre
- EaStCHEM School of Chemistry
- University of St Andrews
- KY16 9ST St Andrews
- UK
| | | | | | - Michael Bühl
- Organic Semiconductor Centre
- EaStCHEM School of Chemistry
- University of St Andrews
- KY16 9ST St Andrews
- UK
| | | | - Eli Zysman-Colman
- Organic Semiconductor Centre
- EaStCHEM School of Chemistry
- University of St Andrews
- KY16 9ST St Andrews
- UK
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17
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Rivard E. Metallacycle Transfer and its Link to Light-Emitting Materials and Conjugated Polymers. CHEM REC 2019; 20:640-648. [PMID: 31833670 DOI: 10.1002/tcr.201900095] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Revised: 11/26/2019] [Indexed: 02/05/2023]
Abstract
Major advances in optoelectronic technologies (e. g., solar cells, organic light-emitting diodes, etc…) are prefaced by the discovery of new synthetic methodologies. In this review, the key role of the Fagan-Nugent reaction in enabling our team (and others) to gain access to new building blocks for luminescent materials and conjugated polymers bearing p-block elements will be described. The Fagan-Nugent reaction is extremely powerful as a synthetic tool since the efficient zirconium-element atom exchange involved affords a wide range of unsaturated inorganic heterocycles of controllable composition and function.
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Affiliation(s)
- Eric Rivard
- Department of Chemistry, University of Alberta, 11227 Saskatchewan Dr., Edmonton, Alberta, T6G 2G2, Canada
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