51
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Walker BR, Manabe S, Brusoe AT, Sevov CS. Mediator-Enabled Electrocatalysis with Ligandless Copper for Anaerobic Chan-Lam Coupling Reactions. J Am Chem Soc 2021; 143:6257-6265. [PMID: 33861580 PMCID: PMC8143265 DOI: 10.1021/jacs.1c02103] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Simple copper salts serve as catalysts to effect C-X bond-forming reactions in some of the most utilized transformations in synthesis, including the oxidative coupling of aryl boronic acids and amines. However, these Chan-Lam coupling reactions have historically relied on chemical oxidants that limit their applicability beyond small-scale synthesis. Despite the success of replacing strong chemical oxidants with electrochemistry for a variety of metal-catalyzed processes, electrooxidative reactions with ligandless copper catalysts are plagued by slow electron-transfer kinetics, irreversible copper plating, and competitive substrate oxidation. Herein, we report the implementation of substoichiometric quantities of redox mediators to address limitations to Cu-catalyzed electrosynthesis. Mechanistic studies reveal that mediators serve multiple roles by (i) rapidly oxidizing low-valent Cu intermediates, (ii) stripping Cu metal from the cathode to regenerate the catalyst and reveal the active Pt surface for proton reduction, and (iii) providing anodic overcharge protection to prevent substrate oxidation. This strategy is applied to Chan-Lam coupling of aryl-, heteroaryl-, and alkylamines with arylboronic acids in the absence of chemical oxidants. Couplings under these electrochemical conditions occur with higher yields and shorter reaction times than conventional reactions in air and provide complementary substrate reactivity.
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Affiliation(s)
- Benjamin R Walker
- Department of Chemistry and Biochemistry, The Ohio State University, 151 W. Woodruff Avenue, Columbus, Ohio 43210, United States
| | - Shuhei Manabe
- Department of Chemistry and Biochemistry, The Ohio State University, 151 W. Woodruff Avenue, Columbus, Ohio 43210, United States
| | - Andrew T Brusoe
- Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Christo S Sevov
- Department of Chemistry and Biochemistry, The Ohio State University, 151 W. Woodruff Avenue, Columbus, Ohio 43210, United States
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52
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Yang P, Wang X, Li B, Yang Y, Yue J, Suo Y, Tong H, He G, Lu X, Chen G. Streamlined construction of peptide macrocycles via palladium-catalyzed intramolecular S-arylation in solution and on DNA. Chem Sci 2021; 12:5804-5810. [PMID: 34168804 PMCID: PMC8179660 DOI: 10.1039/d1sc00789k] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Accepted: 03/08/2021] [Indexed: 12/18/2022] Open
Abstract
A highly efficient and versatile method for construction of peptide macrocycles via palladium-catalyzed intramolecular S-arylation of alkyl and aryl thiols with aryl iodides under mild conditions is developed. The method exhibits a broad substrate scope for thiols, aryl iodides and amino acid units. Peptide macrocycles of a wide range of size and composition can be readily assembled in high yield from various easily accessible building blocks. This method has been successfully employed to prepare an 8-million-membered tetrameric cyclic peptide DNA-encoded library (DEL). Preliminary screening of the DEL library against protein p300 identified compounds with single digit micromolar inhibition activity.
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Affiliation(s)
- Peng Yang
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University Tianjin 300071 China
| | - Xuan Wang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences 501 Haike Road, Zhang Jiang Hi-Tech Park, Pudong Shanghai 201203 China
| | - Bo Li
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University Tianjin 300071 China
| | - Yixuan Yang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences 501 Haike Road, Zhang Jiang Hi-Tech Park, Pudong Shanghai 201203 China
| | - Jinfeng Yue
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences 501 Haike Road, Zhang Jiang Hi-Tech Park, Pudong Shanghai 201203 China
| | - Yanrui Suo
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences 501 Haike Road, Zhang Jiang Hi-Tech Park, Pudong Shanghai 201203 China
| | - Huarong Tong
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University Tianjin 300071 China
| | - Gang He
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University Tianjin 300071 China
| | - Xiaojie Lu
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences 501 Haike Road, Zhang Jiang Hi-Tech Park, Pudong Shanghai 201203 China
| | - Gong Chen
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University Tianjin 300071 China
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53
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Domingues NLC, dos Santos BF, da Silva BAL, de Oliveira AR, Sarragiotto MH. Anchored Pd(0) Nanoparticles on Synthetic Talc for the Synthesis of Biaryls and a Precursor of Angiotensin II Inhibitors. SYNTHESIS-STUTTGART 2021. [DOI: 10.1055/s-0040-1705989] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
AbstractThe palladium-catalyzed Suzuki–Miyaura cross-coupling reaction is one of the most important and efficient reactions to prepare a variety of organic compounds, including biaryls. Despite the overwhelming number of reports related to this topic, some methodological difficulties persist in terms of catalyst handling, recovery, and reuse, as well as the reaction media. This work reports the rational design of new, efficient, cost-effective, and reusable palladium catalysts supported on synthetic talc for the Suzuki–Miyaura reaction. From the results, key points were identified: both designed catalysts accelerated the reaction in EtOH and an open-flask setup, affording moderate to excellent yields within a short time (e.g., 30 min) even for deactivated aryl halides; the protocol can be applied to a great number of both cross-coupling partners, showing an excellent functional group tolerance; the catalysts can be recovered and reused without significant loss of activity. This protocol was used for the synthesis of a precursor of angiotensin II inhibitors such as valsartan, losartan, irbesartan, and telmisartan.
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Affiliation(s)
- Nelson Luís C. Domingues
- Organic Catalysis and Biocatalysis Laboratory – LACOB, Federal University of Grande Dourados – UFGD
| | - Beatriz F. dos Santos
- Organic Catalysis and Biocatalysis Laboratory – LACOB, Federal University of Grande Dourados – UFGD
| | - Beatriz A. L. da Silva
- Organic Catalysis and Biocatalysis Laboratory – LACOB, Federal University of Grande Dourados – UFGD
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54
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Kim K, Kim N, Hong S. Visible
Light‐Induced
Intramolecular C─O Bond Formation via 1,
5‐Hydrogen
Atom Transfer Strategy. B KOREAN CHEM SOC 2021. [DOI: 10.1002/bkcs.12234] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Kiho Kim
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS) Daejeon, 34141 Korea
- Department of Chemistry Korea Advanced Institute of Science and Technology Daejeon, 34141 Korea
| | - Namhoon Kim
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS) Daejeon, 34141 Korea
- Department of Chemistry Korea Advanced Institute of Science and Technology Daejeon, 34141 Korea
| | - Sungwoo Hong
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS) Daejeon, 34141 Korea
- Department of Chemistry Korea Advanced Institute of Science and Technology Daejeon, 34141 Korea
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55
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Kisgeropoulos EC, Manesis AC, Shafaat HS. Ligand Field Inversion as a Mechanism to Gate Bioorganometallic Reactivity: Investigating a Biochemical Model of Acetyl CoA Synthase Using Spectroscopy and Computation. J Am Chem Soc 2021; 143:849-867. [PMID: 33415980 DOI: 10.1021/jacs.0c10135] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The biological global carbon cycle is largely regulated through microbial nickel enzymes, including carbon monoxide dehydrogenase (CODH), acetyl coenzyme A synthase (ACS), and methyl coenzyme M reductase (MCR). These systems are suggested to utilize organometallic intermediates during catalysis, though characterization of these species has remained challenging. We have established a mutant of nickel-substituted azurin as a scaffold upon which to develop protein-based models of enzymatic intermediates, including the organometallic states of ACS. In this work, we report the comprehensive investigation of the S = 1/2 Ni-CO and Ni-CH3 states using pulsed EPR spectroscopy and computational techniques. While the Ni-CO state shows conventional metal-ligand interactions and a classical ligand field, the Ni-CH3 hyperfine interactions between the methyl protons and the nickel indicate a closer distance than would be expected for an anionic methyl ligand. Structural analysis instead suggests a near-planar methyl ligand that can be best described as cationic. Consistent with this conclusion, the frontier molecular orbitals of the Ni-CH3 species indicate a ligand-centered LUMO, with a d9 population on the metal center, rather than the d7 population expected for a typical metal-alkyl species generated by oxidative addition. Collectively, these data support the presence of an inverted ligand field configuration for the Ni-CH3 Az species, in which the lowest unoccupied orbital is centered on the ligands rather than the more electropositive metal. These analyses provide the first evidence for an inverted ligand field within a biological system. The functional relevance of the electronic structures of both the Ni-CO and Ni-CH3 species are discussed in the context of native ACS, and an inverted ligand field is proposed as a mechanism by which to gate reactivity both within ACS and in other thiolate-containing metalloenzymes.
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Affiliation(s)
- Effie C Kisgeropoulos
- Department of Chemistry and Biochemistry and Ohio State Biochemistry Program, The Ohio State University, Columbus, Ohio 43210, United States
| | - Anastasia C Manesis
- Department of Chemistry and Biochemistry and Ohio State Biochemistry Program, The Ohio State University, Columbus, Ohio 43210, United States
| | - Hannah S Shafaat
- Department of Chemistry and Biochemistry and Ohio State Biochemistry Program, The Ohio State University, Columbus, Ohio 43210, United States
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56
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Wang JY, Choi K, Zuend SJ, Borate K, Shinde H, Goetz R, Hartwig JF. Cross-Coupling between Hydrazine and Aryl Halides with Hydroxide Base at Low Loadings of Palladium by Rate-Determining Deprotonation of Bound Hydrazine. Angew Chem Int Ed Engl 2021; 60:399-408. [PMID: 32929852 PMCID: PMC7755694 DOI: 10.1002/anie.202011161] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Revised: 09/03/2020] [Indexed: 12/23/2022]
Abstract
Reported here is the Pd-catalyzed C-N coupling of hydrazine with (hetero)aryl chlorides and bromides to form aryl hydrazines with catalyst loadings as low as 100 ppm of Pd and KOH as base. Mechanistic studies revealed two catalyst resting states: an arylpalladium(II) hydroxide and arylpalladium(II) chloride. These compounds are present in two interconnected catalytic cycles and react with hydrazine and base or hydrazine alone to give the product. The selectivity of the hydroxide complex with hydrazine to form aryl over diaryl hydrazine was lower than that of the chloride complex, as well as the catalytic reaction. In contrast, the selectivity of the chloride complex closely matched that of the catalytic reaction, indicating that the aryl hydrazine is derived from this complex. Kinetic studies showed that the coupling process occurs by rate-limiting deprotonation of a hydrazine-bound arylpalladium(II) chloride complex to give an arylpalladium(II) hydrazido complex.
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Affiliation(s)
- Justin Y Wang
- Department of Chemistry, University of California, Berkeley, California, 94720, USA
| | - Kyoungmin Choi
- Department of Chemistry, University of California, Berkeley, California, 94720, USA
| | - Stephan J Zuend
- BASF Corp., 46820 Fremont Boulevard, Fremont, California, 94538, USA
| | - Kailaskumar Borate
- Innovation Campus Mumbai, Room No. 6.23, BASF Chemicals India Pvt. Ltd., Plot No. 12, TTC Area, Thane Belapur Road, Turbhe, Navi Mumbai, 400705, India
| | - Harish Shinde
- Innovation Campus Mumbai, Room No. 6.23, BASF Chemicals India Pvt. Ltd., Plot No. 12, TTC Area, Thane Belapur Road, Turbhe, Navi Mumbai, 400705, India
| | - Roland Goetz
- BASF SE, Carl-Bosch-Strasse 38, 67056, Ludwigshafen am Rhein, Germany
| | - John F Hartwig
- Department of Chemistry, University of California, Berkeley, California, 94720, USA
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57
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Thermally stable and robust gadolinium-based metal-organic framework: Synthesis, structure and heterogeneous catalytic O-arylation reaction. Polyhedron 2021. [DOI: 10.1016/j.poly.2020.114934] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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58
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Talukder MM, Miller JT, Cue JMO, Udamulle CM, Bhadran A, Biewer MC, Stefan MC. Mono- and Dinuclear α-Diimine Nickel(II) and Palladium(II) Complexes in C–S Cross-Coupling. Organometallics 2020. [DOI: 10.1021/acs.organomet.0c00732] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Md Muktadir Talukder
- Department of Chemistry and Biochemistry, University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Justin T. Miller
- Department of Chemistry and Biochemistry, University of Texas at Dallas, Richardson, Texas 75080, United States
| | - John Michael O. Cue
- Department of Chemistry and Biochemistry, University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Chinthaka M. Udamulle
- Department of Chemistry and Biochemistry, University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Abhi Bhadran
- Department of Chemistry and Biochemistry, University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Michael C. Biewer
- Department of Chemistry and Biochemistry, University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Mihaela C. Stefan
- Department of Chemistry and Biochemistry, University of Texas at Dallas, Richardson, Texas 75080, United States
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59
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Wang JY, Choi K, Zuend SJ, Borate K, Shinde H, Goetz R, Hartwig JF. Cross‐Coupling between Hydrazine and Aryl Halides with Hydroxide Base at Low Loadings of Palladium by Rate‐Determining Deprotonation of Bound Hydrazine. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202011161] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Justin Y. Wang
- Department of Chemistry University of California Berkeley California 94720 USA
| | - Kyoungmin Choi
- Department of Chemistry University of California Berkeley California 94720 USA
| | | | - Kailaskumar Borate
- Innovation Campus Mumbai, Room No. 6.23 BASF Chemicals India Pvt. Ltd., Plot No. 12, TTC Area Thane Belapur Road, Turbhe Navi Mumbai 400705 India
| | - Harish Shinde
- Innovation Campus Mumbai, Room No. 6.23 BASF Chemicals India Pvt. Ltd., Plot No. 12, TTC Area Thane Belapur Road, Turbhe Navi Mumbai 400705 India
| | - Roland Goetz
- BASF SE Carl-Bosch-Strasse 38 67056 Ludwigshafen am Rhein Germany
| | - John F. Hartwig
- Department of Chemistry University of California Berkeley California 94720 USA
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60
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Hu H, Burlas CE, Curley SJ, Gruchala T, Qu F, Shaughnessy KH. Effect of Aryl Ligand Identity on Catalytic Performance of Trineopentylphosphine Arylpalladium Complexes in N-Arylation Reactions. Organometallics 2020. [DOI: 10.1021/acs.organomet.0c00140] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Huaiyuan Hu
- Department of Chemistry & Biochemistry, The University of Alabama, Tuscaloosa, Alabama 35487, United States
| | - Corrie E. Burlas
- Department of Chemistry & Biochemistry, The University of Alabama, Tuscaloosa, Alabama 35487, United States
| | - Sabrina J. Curley
- Department of Chemistry & Biochemistry, The University of Alabama, Tuscaloosa, Alabama 35487, United States
| | - Tomasz Gruchala
- Department of Chemistry & Biochemistry, The University of Alabama, Tuscaloosa, Alabama 35487, United States
| | - Fengrui Qu
- Department of Chemistry & Biochemistry, The University of Alabama, Tuscaloosa, Alabama 35487, United States
| | - Kevin H. Shaughnessy
- Department of Chemistry & Biochemistry, The University of Alabama, Tuscaloosa, Alabama 35487, United States
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61
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Ganley JM, Murray PRD, Knowles RR. Photocatalytic Generation of Aminium Radical Cations for C─N Bond Formation. ACS Catal 2020; 10:11712-11738. [PMID: 33163257 PMCID: PMC7644096 DOI: 10.1021/acscatal.0c03567] [Citation(s) in RCA: 81] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Aminium radical cations have been extensively studied as electrophilic aminating species that readily participate in C─N bond forming processes with alkenes and arenes. However, their utility in synthesis has been limited, as their generation required unstable, reactive starting materials and harsh reaction conditions. Visible-light photoredox catalysis has emerged as a platform for the mild production of aminium radical cations from either unfunctionalized or N-functionalized amines. This Perspective covers recent synthetic methods that rely on the photocatalytic generation of aminium radical cations for C─N bond formation, specifically in the context of alkene hydroamination, arene C─H bond amination, and the mesolytic bond cleavage of alkoxyamines.
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Affiliation(s)
- Jacob M Ganley
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
| | - Philip R D Murray
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
| | - Robert R Knowles
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
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62
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Qi X, Wang J, Dong Z, Dong G, Liu P. Compatibility Score for Rational Electrophile Selection in Pd/NBE Cooperative Catalysis. Chem 2020; 6:2810-2825. [PMID: 34046530 DOI: 10.1016/j.chempr.2020.09.004] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A mechanistically guided approach is developed to predict electrophile compatibility in the palladium/norbornene (Pd/NBE) cooperative catalysis for the ipso/ortho difunctionalization of aryl halides. A key challenge in these reactions is to identify orthogonal electrophile and aryl hali de starting materials that react selectively with different transition metal complexes in separate oxidative addition events in the catalytic cycle. We performed detailed experimental and computational mechanistic studies to identify the catalytically active Pd(II) intermediate and the substrate-dependent mechanisms in reactions with various types of carbon and nitrogen electrophiles. We introduced the concept of electrophile compatibility score (ECS) to rationally select electrophiles based on the orthogonal reactivity of electrophile and aryl halide towards the Pd(0) and Pd(II) complexes. This approach was applied to predict electrophile compatibility in the Pd/NBE cooperative catalysis with a variety of electrophilic coupling partners used in alkylation, arylation, amination, and acylation reactions.
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Affiliation(s)
- Xiaotian Qi
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA 15260, USA
| | - Jianchun Wang
- Department of Chemistry, University of Chicago, Chicago, IL 60637, USA
| | - Zhe Dong
- Department of Chemistry, University of Chicago, Chicago, IL 60637, USA
| | - Guangbin Dong
- Department of Chemistry, University of Chicago, Chicago, IL 60637, USA
| | - Peng Liu
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA 15260, USA.,Department of Chemical and Petroleum Engineering, University of Pittsburgh, Pittsburgh, PA 15261, USA.,Lead Contact
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63
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Tkachuk VM, Lukianov OO, Vovk MV, Gillaizeau I, Sukach VA. Chan-Evans-Lam N1-(het)arylation and N1-alkеnylation of 4-fluoroalkylpyrimidin-2(1 H)-ones. Beilstein J Org Chem 2020; 16:2304-2313. [PMID: 33014170 PMCID: PMC7509380 DOI: 10.3762/bjoc.16.191] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2020] [Accepted: 09/04/2020] [Indexed: 01/17/2023] Open
Abstract
The Chan–Evans–Lam reaction of 1-unsubstituted 4-fluoroalkylpyrimidin-2(1Н)-ones with arylboronic acids is reported as a facile synthetic route to hitherto unavailable N1-(het)aryl and N1-alkenyl derivatives of the corresponding pyrimidines. An efficient C–N bond-forming process is also observed by using boronic acid pinacol esters as coupling partners in the presence of Cu(II) acetate and boric acid. The 4-fluoroalkyl group on the pyrimidine ring significantly assists in the formation of the target N1-substituted products, in contrast to the 4-methyl and 4-unsubstituted substrates which do not undergo N1-arylation under similar reaction conditions.
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Affiliation(s)
- Viktor M Tkachuk
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine
| | - Oleh O Lukianov
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine
| | - Mykhailo V Vovk
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine
| | - Isabelle Gillaizeau
- Institute of Organic and Analytical Chemistry, ICOA UMR 7311 CNRS, Université d'Orléans, rue de Chartres, 45100 Orléans, France
| | - Volodymyr A Sukach
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine.,Enamine LTD, 78 Chervonotkats'ka str., Kyiv 02094, Ukraine
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64
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Liu W, Xu J, Chen X, Zhang F, Xu Z, Wang D, He Y, Xia X, Zhang X, Liang Y. CuI/2-Aminopyridine 1-Oxide Catalyzed Amination of Aryl Chlorides with Aliphatic Amines. Org Lett 2020; 22:7486-7490. [DOI: 10.1021/acs.orglett.0c02672] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Wenjie Liu
- Key Laboratory of Functional Organometallic Materials, College of Chemistry and Materials Science, Hengyang Normal University, Hengyang 421008, Hunan Province, PR China
| | - Jiamin Xu
- Key Laboratory of Functional Organometallic Materials, College of Chemistry and Materials Science, Hengyang Normal University, Hengyang 421008, Hunan Province, PR China
| | - Xiahong Chen
- Key Laboratory of Functional Organometallic Materials, College of Chemistry and Materials Science, Hengyang Normal University, Hengyang 421008, Hunan Province, PR China
| | - Fuxing Zhang
- Key Laboratory of Functional Organometallic Materials, College of Chemistry and Materials Science, Hengyang Normal University, Hengyang 421008, Hunan Province, PR China
| | - Zhifeng Xu
- Key Laboratory of Functional Organometallic Materials, College of Chemistry and Materials Science, Hengyang Normal University, Hengyang 421008, Hunan Province, PR China
| | - Deping Wang
- Key Laboratory of Functional Organometallic Materials, College of Chemistry and Materials Science, Hengyang Normal University, Hengyang 421008, Hunan Province, PR China
| | - Yongqiang He
- College of Materials Science and Engineering, Hunan University, Changsha 410082, PR China
| | - Xiaohong Xia
- College of Materials Science and Engineering, Hunan University, Changsha 410082, PR China
| | - Xin Zhang
- Key Laboratory of Functional Organometallic Materials, College of Chemistry and Materials Science, Hengyang Normal University, Hengyang 421008, Hunan Province, PR China
- College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, PR China
| | - Yun Liang
- College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, PR China
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65
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McCann SD, Reichert EC, Arrechea PL, Buchwald SL. Development of an Aryl Amination Catalyst with Broad Scope Guided by Consideration of Catalyst Stability. J Am Chem Soc 2020; 142:15027-15037. [PMID: 32786769 DOI: 10.1021/jacs.0c06139] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
We have developed a new dialkylbiaryl monophosphine ligand, GPhos, that supports a palladium catalyst capable of promoting carbon-nitrogen cross-coupling reactions between a variety of primary amines and aryl halides; in many cases, these reactions can be carried out at room temperature. The reaction development was guided by the idea that the productivity of catalysts employing BrettPhos-like ligands is limited by their lack of stability at room temperature. Specifically, it was hypothesized that primary amine and N-heteroaromatic substrates can displace the phosphine ligand, leading to the formation of catalytically dormant palladium complexes that reactivate only upon heating. This notion was supported by the synthesis and kinetic study of a putative off-cycle Pd complex. Consideration of this off-cycle species, together with the identification of substrate classes that are not effectively coupled at room temperature using previous catalysts, led to the design of a new dialkylbiaryl monophosphine ligand. An Ot-Bu substituent was added ortho to the dialkylphosphino group of the ligand framework to improve the stability of the most active catalyst conformer. To offset the increased size of this substituent, we also removed the para i-Pr group of the non-phosphorus-containing ring, which allowed the catalyst to accommodate binding of even very large α-tertiary primary amine nucleophiles. In comparison to previous catalysts, the GPhos-supported catalyst exhibits better reactivity both under ambient conditions and at elevated temperatures. Its use allows for the coupling of a range of amine nucleophiles, including (1) unhindered, (2) five-membered-ring N-heterocycle-containing, and (3) α-tertiary primary amines, each of which previously required a different catalyst to achieve optimal results.
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Affiliation(s)
- Scott D McCann
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Elaine C Reichert
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Pedro Luis Arrechea
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Stephen L Buchwald
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
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66
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Tong S, Li JT, Liang DD, Zhang YE, Feng QY, Zhang X, Zhu J, Wang MX. Catalytic Enantioselective Synthesis and Switchable Chiroptical Property of Inherently Chiral Macrocycles. J Am Chem Soc 2020; 142:14432-14436. [PMID: 32786737 DOI: 10.1021/jacs.0c05369] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
We report herein a strategy to construct enantiopure inherently chiral macrocycles, ABCD-type heteracalix[4]aromatics, through a catalytic enantioselective intramolecular C-N bond forming reaction. A chiral ligand-palladium complex was found to efficiently induce the inherent chirality of molecules during the macrocyclization process with ee values up to >99%. The resulting ABCD-type heteracalix[4]aromatics displayed excellent and pH-triggered switchable electronic circular dichroism and circularly polarized luminescence properties.
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Affiliation(s)
- Shuo Tong
- MOE Key Laboratory of Bioorganic Phosphorous and Chemical Biology, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Jiang-Tao Li
- MOE Key Laboratory of Bioorganic Phosphorous and Chemical Biology, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Dong-Dong Liang
- MOE Key Laboratory of Bioorganic Phosphorous and Chemical Biology, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Yan-E Zhang
- MOE Key Laboratory of Bioorganic Phosphorous and Chemical Biology, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Qi-Yun Feng
- MOE Key Laboratory of Bioorganic Phosphorous and Chemical Biology, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Xin Zhang
- MOE Key Laboratory of Bioorganic Phosphorous and Chemical Biology, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Jieping Zhu
- Laboratory of Synthesis and Natural Products, Institute of Chemical Sciences and Engineering, Ecole Poltechnique Fédérale de Lausanne, EPFL-SB-ISIC-LSPN, BCH 5304, 1015 Lausanne, Switzerland
| | - Mei-Xiang Wang
- MOE Key Laboratory of Bioorganic Phosphorous and Chemical Biology, Department of Chemistry, Tsinghua University, Beijing 100084, China
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67
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Dörr M, Röckl JL, Rein J, Schollmeyer D, Waldvogel SR. Electrochemical C-H Functionalization of (Hetero)Arenes-Optimized by DoE. Chemistry 2020; 26:10195-10198. [PMID: 32232873 PMCID: PMC7496267 DOI: 10.1002/chem.202001171] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Revised: 03/28/2020] [Indexed: 01/01/2023]
Abstract
A novel approach towards the activation of different arenes and purines including caffeine and theophylline is presented. The simple, safe and scalable electrochemical synthesis of 1,1,1,3,3,3‐hexafluoroisopropanol (HFIP) aryl ethers was conducted using an easy electrolysis setup with boron‐doped diamond (BDD) electrodes. Good yields up to 59 % were achieved. Triethylamine was used as a base as it forms a highly conductive media with HFIP, making additional supporting electrolytes superfluous. The synthesis was optimized using Design of Experiment (DoE) techniques giving a detailed insight to the significance of the reaction parameters. The mechanism was investigated by cyclic voltammetry (CV). Subsequent transition metal‐catalyzed as well as metal‐free functionalization led to interesting motifs in excellent yields up to 94 %.
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Affiliation(s)
- Maurice Dörr
- Department of Chemistry, Johannes Gutenberg University Mainz, Duesbergweg 10-14, 55128, Mainz, Germany
| | - Johannes L Röckl
- Department of Chemistry, Johannes Gutenberg University Mainz, Duesbergweg 10-14, 55128, Mainz, Germany.,Graduate School Materials Science in Mainz, Staudingerweg 9, 55128, Mainz, Germany
| | - Jonas Rein
- Department of Chemistry, Johannes Gutenberg University Mainz, Duesbergweg 10-14, 55128, Mainz, Germany
| | - Dieter Schollmeyer
- Department of Chemistry, Johannes Gutenberg University Mainz, Duesbergweg 10-14, 55128, Mainz, Germany
| | - Siegfried R Waldvogel
- Department of Chemistry, Johannes Gutenberg University Mainz, Duesbergweg 10-14, 55128, Mainz, Germany.,Graduate School Materials Science in Mainz, Staudingerweg 9, 55128, Mainz, Germany
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68
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Kopp K, Schiemann O, Fleck N. Improved, Odorless Access to Benzo[1,2-d;4,5-d']- bis[1,3]dithioles and Tert-butyl Arylsulfides via C-S Cross Coupling. Molecules 2020; 25:molecules25163666. [PMID: 32806560 PMCID: PMC7464442 DOI: 10.3390/molecules25163666] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Revised: 08/07/2020] [Accepted: 08/11/2020] [Indexed: 11/26/2022] Open
Abstract
Benzo[1,2-d;4,5-d′]bis[1,3]dithioles are important building blocks within a range of functional materials such as fluorescent dyes, conjugated polymers, and stable trityl radicals. Access to these is usually gained via tert-butyl aryl sulfides, the synthesis of which requires the use of highly malodorous tert-butyl thiol and relies on SNAr-chemistry requiring harsh reaction conditions, while giving low yields. In the present work, S-tert-butyl isothiouronium bromide is successfully applied as an odorless surrogate for tert-butyl thiol. The C-S bond formation is carried out under palladium catalysis with the thiolate formed in situ resulting in high yields of tert-butyl aryl sulfides. The subsequent formation of benzo[1,2-d;4,5-d′]bis[1,3]dithioles is here achieved with scandium(III)triflate, a less harmful reagent than the usually used Lewis acids, e.g., boron trifluoride or tetrafluoroboric acid. This enables a convenient and environmentally more compliant access to high yields of benzo[1,2-d;4,5-d′]bis[1,3]dithioles.
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69
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U. Dighe S, Juliá F, Luridiana A, Douglas JJ, Leonori D. A photochemical dehydrogenative strategy for aniline synthesis. Nature 2020; 584:75-81. [DOI: 10.1038/s41586-020-2539-7] [Citation(s) in RCA: 75] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Accepted: 06/08/2020] [Indexed: 11/09/2022]
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70
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Boosting multiple photo-assisted and temperature controlled reactions with a single redox-switchable catalyst: Solvents as internal substrates and reducing agent. J Catal 2020. [DOI: 10.1016/j.jcat.2020.04.026] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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71
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Wang X, Wang S, Gao Y, Sun H, Liang X, Bu F, Abdelilah T, Lei A. Oxidant-Induced Azolation of Electron-Rich Phenol Derivatives. Org Lett 2020; 22:5429-5433. [PMID: 32614189 DOI: 10.1021/acs.orglett.0c01796] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Since N-arylazoles are widely present in natural products, pharmaceuticals, and functional materials, it is important to develop a simple and efficient synthetic method for the synthesis of N-arylazoles. Herein, an oxidant-induced intermolecular azolation of phenol derivatives was demonstrated under catalyst-free condition. Both monoazolation and diazolation of phenols can be successfully achieved via this practical and powerful method.
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Affiliation(s)
- Xiaoyu Wang
- National Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang 330022, P.R. China
| | - Shengchun Wang
- Institute for Advanced Studies (IAS), College of Chemistry and Molecular Sciences Wuhan University, Wuhan 430072, P.R. China
| | - Yiming Gao
- Institute for Advanced Studies (IAS), College of Chemistry and Molecular Sciences Wuhan University, Wuhan 430072, P.R. China
| | - He Sun
- Institute for Advanced Studies (IAS), College of Chemistry and Molecular Sciences Wuhan University, Wuhan 430072, P.R. China
| | - Xing'an Liang
- Institute for Advanced Studies (IAS), College of Chemistry and Molecular Sciences Wuhan University, Wuhan 430072, P.R. China
| | - Faxiang Bu
- Institute for Advanced Studies (IAS), College of Chemistry and Molecular Sciences Wuhan University, Wuhan 430072, P.R. China
| | - Takfaoui Abdelilah
- Institute for Advanced Studies (IAS), College of Chemistry and Molecular Sciences Wuhan University, Wuhan 430072, P.R. China
| | - Aiwen Lei
- National Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang 330022, P.R. China.,Institute for Advanced Studies (IAS), College of Chemistry and Molecular Sciences Wuhan University, Wuhan 430072, P.R. China
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72
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Katahara S, Takahashi T, Nomura K, Uchiyama M, Sato T, Chida N. Copper-Catalyzed Electrophilic Etherification of Arylboronic Esters with Isoxazolidines. Chem Asian J 2020; 15:1869-1872. [PMID: 32352205 DOI: 10.1002/asia.202000270] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Revised: 04/29/2020] [Indexed: 11/10/2022]
Abstract
A copper-catalyzed electrophilic etherification of arylboronic esters is reported. Isoxazolidines are utilized as easily available and stable [RO]+ surrogates to give 1,3-amino aryl ethers. The O-selective arylation of isoxazolidines takes place without causing competitive N-arylation. In contrast to previously reported anionic conditions, our copper-catalyzed conditions are mild enough to achieve high functional group tolerance. Preliminary mechanistic studies and DFT calculations support that the reaction proceeds via a transmetalation/oxidative addition pathway, followed by a Lewis acid-promoted reductive elimination to induce the crucial O-selectivity.
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Affiliation(s)
- Seiya Katahara
- Department of Applied Chemistry Faculty of Science and Technology, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama, 223-8522, Japan
| | - Tenga Takahashi
- Department of Applied Chemistry Faculty of Science and Technology, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama, 223-8522, Japan
| | - Kengo Nomura
- Department of Applied Chemistry Faculty of Science and Technology, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama, 223-8522, Japan
| | - Masanobu Uchiyama
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan.,Cluster of Pioneering Research (CPR), Advanced Elements Chemistry LaboratoryRIKEN, 2-1 Hirosawa, Wako-shi, Saitama, 351-0198, Japan.,Research Initiative for Supra-Materials (RISM), Shinshu University, Ueda, 386-8567, Japan
| | - Takaaki Sato
- Department of Applied Chemistry Faculty of Science and Technology, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama, 223-8522, Japan
| | - Noritaka Chida
- Department of Applied Chemistry Faculty of Science and Technology, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama, 223-8522, Japan
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73
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Khalaj M. Synthesis of carbamothioate derivatives via a copper catalyzed thiocarboxamidation of aryl iodides. MONATSHEFTE FUR CHEMIE 2020. [DOI: 10.1007/s00706-020-02613-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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74
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Pankow RM, Ye L, Thompson BC. Influence of the Ester Directing Group on the Inhibition of Defect Formation in Polythiophenes with Direct Arylation Polymerization (DArP). Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c00154] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Robert M. Pankow
- Department of Chemistry and Loker Hydrocarbon Research Institute, University of Southern California, Los Angeles, California 90089-1661, United States
| | - Liwei Ye
- Department of Chemistry and Loker Hydrocarbon Research Institute, University of Southern California, Los Angeles, California 90089-1661, United States
| | - Barry C. Thompson
- Department of Chemistry and Loker Hydrocarbon Research Institute, University of Southern California, Los Angeles, California 90089-1661, United States
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75
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Abel AS, Zenkov IS, Averin AD, Cheprakov AV, Bessmertnykh-Lemeune AG, Orlinson BS, Beletskaya IP. Tuning the Luminescent Properties of Ruthenium(II) Amino-1,10-Phenanthroline Complexes by Varying the Position of the Amino Group on the Heterocycle. Chempluschem 2020; 84:498-503. [PMID: 31943904 DOI: 10.1002/cplu.201900206] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Revised: 04/24/2019] [Indexed: 01/29/2023]
Abstract
Eight 1,10-phenanthrolines bearing one or two 2-(1-adamantyloxy)ethylamino substituents attached to different positions of the heterocyclic core were prepared according to SN Ar or palladium-catalyzed amination reactions. Their reaction with cis-Ru(bpy)2 Cl2 (bpy=2,2'-bipyridine) was investigated and Ru(bpy)2 (L)(PF6 )2 (phen=1,10-phenanthroline) (L=amino-substituted 1,10-phenanthroline) complexes were obtained in good yields. The electronic structure and emissive properties of these complexes are strongly dependent on the position of the amino substituent in the heterocycle. Emission bands of the complexes bearing 2- and 4-substituted 1,10-phenanthroline ligands are red-shifted (up to 56 nm) and less intense compared to that of the parent [Ru(phen)(bpy)2 ](PF6 )2 . In contrast, the introduction of the substituent in 3- or 5-position of 1,10-phenanthroline ring induces only small decrease of luminescence and the brightness of the complex with the 3-substituted ligand is comparable to that of the parent complex.
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Affiliation(s)
- Anton S Abel
- Department of Chemistry, M. V. Lomonosov Moscow State University, 1-3 Leninskie gory, Moscow, 119991, Russia
| | - Ilya S Zenkov
- Department of Chemistry, M. V. Lomonosov Moscow State University, 1-3 Leninskie gory, Moscow, 119991, Russia
| | - Alexei D Averin
- Department of Chemistry, M. V. Lomonosov Moscow State University, 1-3 Leninskie gory, Moscow, 119991, Russia.,Russian Academy of Sciences, Frumkin Institute of Physical Chemistry and Electrochemistry, Leninsky Pr. 31, Moscow, 119071, Russia
| | - Andrey V Cheprakov
- Department of Chemistry, M. V. Lomonosov Moscow State University, 1-3 Leninskie gory, Moscow, 119991, Russia
| | | | - Boris S Orlinson
- Volgograd State Technical University, Prosp. Lenina, 28, Volgograd, 400131, Russia
| | - Irina P Beletskaya
- Department of Chemistry, M. V. Lomonosov Moscow State University, 1-3 Leninskie gory, Moscow, 119991, Russia.,Russian Academy of Sciences, Frumkin Institute of Physical Chemistry and Electrochemistry, Leninsky Pr. 31, Moscow, 119071, Russia
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76
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Kang QK, Lin Y, Li Y, Shi H. Ru(II)-Catalyzed Amination of Aryl Fluorides via η 6-Coordination. J Am Chem Soc 2020; 142:3706-3711. [PMID: 32039590 DOI: 10.1021/jacs.9b13684] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
We developed a Ru/hemilabile-ligand-catalyzed nucleophilic aromatic substitution (SNAr) of aryl fluorides as the limiting reagents. Significant ligand enhancement was demonstrated by the engagement of both electron-rich and neutral arenes in the SNAr amination without using excess arenes. Preliminary mechanistic studies revealed that the nucleophilic substitution proceeds on a η6-complex of the Ru catalyst and the substrate, and the hemilabile ligand facilitates dissociation of products from the metal center.
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Affiliation(s)
- Qi-Kai Kang
- Institute of Natural Sciences , Westlake Institute for Advanced Study , 18 Shilongshan Road , Hangzhou 310024 , Zhejiang , China.,Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, School of Science , Westlake University , 18 Shilongshan Road , Hangzhou 310024 , Zhejiang , China
| | - Yunzhi Lin
- Institute of Natural Sciences , Westlake Institute for Advanced Study , 18 Shilongshan Road , Hangzhou 310024 , Zhejiang , China.,Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, School of Science , Westlake University , 18 Shilongshan Road , Hangzhou 310024 , Zhejiang , China
| | - Yuntong Li
- Institute of Natural Sciences , Westlake Institute for Advanced Study , 18 Shilongshan Road , Hangzhou 310024 , Zhejiang , China.,Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, School of Science , Westlake University , 18 Shilongshan Road , Hangzhou 310024 , Zhejiang , China
| | - Hang Shi
- Institute of Natural Sciences , Westlake Institute for Advanced Study , 18 Shilongshan Road , Hangzhou 310024 , Zhejiang , China.,Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, School of Science , Westlake University , 18 Shilongshan Road , Hangzhou 310024 , Zhejiang , China
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77
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Wu F, Zhu K, Wu G, Gao Y, Chen H. Nickel-Catalyzed C-O Cross-Coupling Reaction at Low Catalytic Loading with Weak Base Participation. European J Org Chem 2020. [DOI: 10.1002/ejoc.201901851] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Fan Wu
- Key Laboratory of Molecule Synthesis and Function Discovery (Fujian Province University); College of Chemistry; Fuzhou University; 350116 Fuzhou Fujian China
| | - Kejie Zhu
- Key Laboratory of Molecule Synthesis and Function Discovery (Fujian Province University); College of Chemistry; Fuzhou University; 350116 Fuzhou Fujian China
| | - Guolin Wu
- Key Laboratory of Molecule Synthesis and Function Discovery (Fujian Province University); College of Chemistry; Fuzhou University; 350116 Fuzhou Fujian China
| | - Yu Gao
- Key Laboratory of Molecule Synthesis and Function Discovery (Fujian Province University); College of Chemistry; Fuzhou University; 350116 Fuzhou Fujian China
| | - Haijun Chen
- Key Laboratory of Molecule Synthesis and Function Discovery (Fujian Province University); College of Chemistry; Fuzhou University; 350116 Fuzhou Fujian China
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78
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Hu H, Ichiryu H, Seki N, Nakajima K, Ohki Y, Ogasawara M. Synthesis, Characterization, and Application of Segphos Derivative Having Diferrocenylphosphino-Donor Moieties. Organometallics 2020. [DOI: 10.1021/acs.organomet.9b00865] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hao Hu
- Department of Natural Science, Graduate School of Science and Technology, Tokushima University, Tokushima 770-8506, Japan
- Graduate School of Life Science, Hokkaido University, Kita-ku, Sapporo 001-0021, Japan
| | - Hiroki Ichiryu
- Department of Natural Science, Graduate School of Science and Technology, Tokushima University, Tokushima 770-8506, Japan
| | - Naoki Seki
- Faculty of Integrated Arts and Sciences, Tokushima University, Tokushima 770-8502, Japan
| | - Kiyohiko Nakajima
- Department of Chemistry, Aichi University of Education, Igaya, Kariya, Aichi 448-8542, Japan
| | - Yasuhiro Ohki
- Department of Chemistry, Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8602, Japan
| | - Masamichi Ogasawara
- Department of Natural Science, Graduate School of Science and Technology, Tokushima University, Tokushima 770-8506, Japan
- Research Cluster on “Innovative Chemical Sensing”, Tokushima University, Tokushima 770-8506, Japan
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79
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Yadav D, Awasthi SK. A Pd NP-confined novel covalent organic polymer for catalytic applications. NEW J CHEM 2020. [DOI: 10.1039/c9nj05827c] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
A novel unsymmetrical covalent organic polymer was synthesized via nucleophilic substitution reaction of 2,4,6-trichloro-1,3,5-triazine with p-amino phenol.
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Affiliation(s)
- Deepika Yadav
- Department of Chemistry
- Chemical Biology Laboratory
- University of Delhi
- Delhi-110007
- India
| | - Satish Kumar Awasthi
- Department of Chemistry
- Chemical Biology Laboratory
- University of Delhi
- Delhi-110007
- India
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80
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Jiang T, Zhang H, Ding Y, Zou S, Chang R, Huang H. Transition-metal-catalyzed reactions involving reductive elimination between dative ligands and covalent ligands. Chem Soc Rev 2020; 49:1487-1516. [DOI: 10.1039/c9cs00539k] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
This review summarizes transition-metal catalyzed reactions with reductive elimination between covalent ligands and dative ligands as the key elementary step.
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Affiliation(s)
- Tianxiao Jiang
- Hefei National Laboratory for Physical Sciences at the Microscale, and Department of Chemistry
- Center for Excellence in Molecular Synthesis
- University of Science and Technology of China
- Chinese Academy of Sciences
- Hefei
| | - Haocheng Zhang
- Hefei National Laboratory for Physical Sciences at the Microscale, and Department of Chemistry
- Center for Excellence in Molecular Synthesis
- University of Science and Technology of China
- Chinese Academy of Sciences
- Hefei
| | - Yongzheng Ding
- Hefei National Laboratory for Physical Sciences at the Microscale, and Department of Chemistry
- Center for Excellence in Molecular Synthesis
- University of Science and Technology of China
- Chinese Academy of Sciences
- Hefei
| | - Suchen Zou
- Hefei National Laboratory for Physical Sciences at the Microscale, and Department of Chemistry
- Center for Excellence in Molecular Synthesis
- University of Science and Technology of China
- Chinese Academy of Sciences
- Hefei
| | - Rui Chang
- Hefei National Laboratory for Physical Sciences at the Microscale, and Department of Chemistry
- Center for Excellence in Molecular Synthesis
- University of Science and Technology of China
- Chinese Academy of Sciences
- Hefei
| | - Hanmin Huang
- Hefei National Laboratory for Physical Sciences at the Microscale, and Department of Chemistry
- Center for Excellence in Molecular Synthesis
- University of Science and Technology of China
- Chinese Academy of Sciences
- Hefei
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81
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Yu CH, Zhu C, Ji X, Hu W, Xie H, Bhuvanesh N, Fang L, Ozerov OV. Palladium bis-pincer complexes with controlled rigidity and inter-metal distance. Inorg Chem Front 2020. [DOI: 10.1039/d0qi01111h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
We report a series of redox-active bis(pincer) Pd(ii) complexes in which the redox active units are based on either a diarylamido or a carbazolide framework.
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Affiliation(s)
- Cheng-Han Yu
- Department of Chemistry
- Texas A&M University
- College Station
- USA
| | - Congzhi Zhu
- Department of Chemistry
- Texas A&M University
- College Station
- USA
| | - Xiaozhou Ji
- Department of Chemistry
- Texas A&M University
- College Station
- USA
| | - Wei Hu
- Department of Chemistry
- Texas A&M University
- College Station
- USA
| | - Haomiao Xie
- Department of Chemistry
- Texas A&M University
- College Station
- USA
| | | | - Lei Fang
- Department of Chemistry
- Texas A&M University
- College Station
- USA
| | - Oleg V. Ozerov
- Department of Chemistry
- Texas A&M University
- College Station
- USA
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82
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Fernandes RA, Bhowmik A, Yadav SS. Advances in Cu and Ni-catalyzed Chan–Lam-type coupling: synthesis of diarylchalcogenides, Ar2–X (X = S, Se, Te). Org Biomol Chem 2020; 18:9583-9600. [DOI: 10.1039/d0ob02035d] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Advances in the Cu and Ni-catalyzed Chan–Lam-type coupling of aryl/heteroarylboronic acids with various chalcogen sources for diarylsulfide, diarylselenide and diaryltelluride synthesis are covered in this review.
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Affiliation(s)
- Rodney A. Fernandes
- Department of Chemistry
- Indian Institute of Technology Bombay Powai
- Mumbai 400076
- India
| | - Amit Bhowmik
- Department of Chemistry
- Indian Institute of Technology Bombay Powai
- Mumbai 400076
- India
| | - Sandhya S. Yadav
- Department of Chemistry
- Indian Institute of Technology Bombay Powai
- Mumbai 400076
- India
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83
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Kim ST, Kim S, Baik MH. How bulky ligands control the chemoselectivity of Pd-catalyzed N-arylation of ammonia. Chem Sci 2019; 11:1017-1025. [PMID: 34084357 PMCID: PMC8145866 DOI: 10.1039/c9sc03095f] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2019] [Accepted: 12/01/2019] [Indexed: 01/28/2023] Open
Abstract
Steric bulk has been recognized as a central design principle for supporting ligands in the widely utilized Buchwald-Hartwig amination. In a recent example, it was shown that a Pd-catalyst carrying a phosphine ligand can successfully aminate aryl halides using ammonia as the nitrogen source. Interestingly, the chemoselectivity of this reaction was found to depend on the steric demand of the phosphine ligand. Whereas a sterically less demanding phosphine affords diphenylamine as the major product, it was shown that the amination reaction can be stopped after the first amination to give aniline if a sterically more encumbering phosphine ligand is used. Density functional theory calculations were carried out to examine the relationship between the steric demand of the phosphine ligand and the chemoselectivity. It was found that the key feature that leads to the chemoselectivity is the ability of the phosphine ligand to rotate the biaryl moiety of the ligand away from the Pd-center upon amine addition to release some of the steric crowding from the Pd-coordination site.
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Affiliation(s)
- Seoung-Tae Kim
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST) Daejeon 34141 Republic of Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS) Daejeon 34141 Republic of Korea
| | - Suyeon Kim
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST) Daejeon 34141 Republic of Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS) Daejeon 34141 Republic of Korea
| | - Mu-Hyun Baik
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS) Daejeon 34141 Republic of Korea
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST) Daejeon 34141 Republic of Korea
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84
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Delcaillau T, Bismuto A, Lian Z, Morandi B. Nickel‐katalysierte inter‐ und intramolekulare Arylthioether‐Metathese durch reversible Arylierung. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201910436] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Tristan Delcaillau
- Laboratorium für Organische ChemieETH Zürich Vladimir-Prelog-Weg 3, HCI 8093 Zürich Schweiz
- Max-Planck-Institut für Kohlenforschung Kaiser-Wihelm-Platz 1 45470 Mülheim an der Ruhr Deutschland
| | - Alessandro Bismuto
- Laboratorium für Organische ChemieETH Zürich Vladimir-Prelog-Weg 3, HCI 8093 Zürich Schweiz
| | - Zhong Lian
- Max-Planck-Institut für Kohlenforschung Kaiser-Wihelm-Platz 1 45470 Mülheim an der Ruhr Deutschland
| | - Bill Morandi
- Laboratorium für Organische ChemieETH Zürich Vladimir-Prelog-Weg 3, HCI 8093 Zürich Schweiz
- Max-Planck-Institut für Kohlenforschung Kaiser-Wihelm-Platz 1 45470 Mülheim an der Ruhr Deutschland
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85
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Delcaillau T, Bismuto A, Lian Z, Morandi B. Nickel-Catalyzed Inter- and Intramolecular Aryl Thioether Metathesis by Reversible Arylation. Angew Chem Int Ed Engl 2019; 59:2110-2114. [PMID: 31829493 PMCID: PMC7004142 DOI: 10.1002/anie.201910436] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Revised: 09/25/2019] [Indexed: 01/24/2023]
Abstract
A nickel‐catalyzed aryl thioether metathesis has been developed to access high‐value thioethers. 1,2‐Bis(dicyclohexylphosphino)ethane (dcype) is essential to promote this highly functional‐group‐tolerant reaction. Furthermore, synthetically challenging macrocycles could be obtained in good yield in an unusual example of ring‐closing metathesis that does not involve alkene bonds. In‐depth organometallic studies support a reversible Ni0/NiII pathway to product formation. Overall, this work not only provides a more sustainable alternative to previous catalytic systems based on Pd, but also presents new applications and mechanistic information that are highly relevant to the further development and application of unusual single‐bond metathesis reactions.
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Affiliation(s)
- Tristan Delcaillau
- Laboratorium für Organische Chemie, ETH Zürich, Vladimir-Prelog-Weg 3, HCI, 8093, Zürich, Switzerland.,Max-Planck-Institut für Kohlenforschung, Kaiser-Wihelm-Platz 1, 45470, Mülheim an der Ruhr, Germany
| | - Alessandro Bismuto
- Laboratorium für Organische Chemie, ETH Zürich, Vladimir-Prelog-Weg 3, HCI, 8093, Zürich, Switzerland
| | - Zhong Lian
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wihelm-Platz 1, 45470, Mülheim an der Ruhr, Germany
| | - Bill Morandi
- Laboratorium für Organische Chemie, ETH Zürich, Vladimir-Prelog-Weg 3, HCI, 8093, Zürich, Switzerland.,Max-Planck-Institut für Kohlenforschung, Kaiser-Wihelm-Platz 1, 45470, Mülheim an der Ruhr, Germany
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86
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Cu(II)-Catalyzed C-N Coupling of (Hetero)aryl Halides and N-Nucleophiles Promoted by α-Benzoin Oxime. Molecules 2019; 24:molecules24224177. [PMID: 31752140 PMCID: PMC6891672 DOI: 10.3390/molecules24224177] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Revised: 11/10/2019] [Accepted: 11/16/2019] [Indexed: 11/21/2022] Open
Abstract
We first reported the new application of a translate metal chelating ligand α-benzoin oxime for improving Cu-catalyzed C-N coupling reactions. The system could catalyse coupling reactions of (hetero)aryl halides with a wide of nucleophiles (e.g., azoles, piperidine, pyrrolidine and amino acids) in moderate to excellent yields. The protocol allows rapid access to the most common scaffolds found in FDA-approved pharmaceuticals.
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87
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Yang Q, Babij NR, Good S. Potential Safety Hazards Associated with Pd-Catalyzed Cross-Coupling Reactions. Org Process Res Dev 2019. [DOI: 10.1021/acs.oprd.9b00377] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Qiang Yang
- Crop Protection Product Design & Process R&D, Corteva Agriscience, 9330 Zionsville Road, Indianapolis, Indiana 46268, United States
| | - Nicholas R. Babij
- Crop Protection Product Design & Process R&D, Corteva Agriscience, 9330 Zionsville Road, Indianapolis, Indiana 46268, United States
| | - Steffen Good
- Crop Protection Product Design & Process R&D, Corteva Agriscience, 9330 Zionsville Road, Indianapolis, Indiana 46268, United States
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88
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Subaramanian M, Midya SP, Ramar PM, Balaraman E. General Synthesis of N-Alkylation of Amines with Secondary Alcohols via Hydrogen Autotransfer. Org Lett 2019; 21:8899-8903. [DOI: 10.1021/acs.orglett.9b02990] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Murugan Subaramanian
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Tirupati, Tirupati − 517507, India
| | - Siba P. Midya
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Tirupati, Tirupati − 517507, India
| | - Palmurukan M. Ramar
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Tirupati, Tirupati − 517507, India
| | - Ekambaram Balaraman
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Tirupati, Tirupati − 517507, India
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89
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Quivelli AF, Vitale P, Perna FM, Capriati V. Reshaping Ullmann Amine Synthesis in Deep Eutectic Solvents: A Mild Approach for Cu-Catalyzed C-N Coupling Reactions With No Additional Ligands. Front Chem 2019; 7:723. [PMID: 31737602 PMCID: PMC6833937 DOI: 10.3389/fchem.2019.00723] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Accepted: 10/10/2019] [Indexed: 12/13/2022] Open
Abstract
The CuI-catalyzed Ullmann amine cross-coupling between (hetero)aryl halides (Br, I) and aromatic and aliphatic amines has been accomplished in deep eutectic solvents as environmentally benign and recycling reaction media. Under optimized conditions, the reaction proceeds smoothly under mild conditions (60–100°C) in air, in the absence of ligands, with a catalyst (CuI) loading of 10 mol% and K2CO3 (aliphatic primary and secondary amines) or t-BuOK (aromatic amines) as the base. A variety of amines have been synthesized in yields up to 98% with a broad substrate scope.
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Affiliation(s)
- Andrea Francesca Quivelli
- Dipartimento di Farmacia-Scienze del Farmaco, Università di Bari "Aldo Moro", Consorzio C.I.N.M.P.I.S., Bari, Italy
| | - Paola Vitale
- Dipartimento di Farmacia-Scienze del Farmaco, Università di Bari "Aldo Moro", Consorzio C.I.N.M.P.I.S., Bari, Italy
| | - Filippo Maria Perna
- Dipartimento di Farmacia-Scienze del Farmaco, Università di Bari "Aldo Moro", Consorzio C.I.N.M.P.I.S., Bari, Italy
| | - Vito Capriati
- Dipartimento di Farmacia-Scienze del Farmaco, Università di Bari "Aldo Moro", Consorzio C.I.N.M.P.I.S., Bari, Italy
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90
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Jiang H, Tang X, Xu Z, Wang H, Han K, Yang X, Zhou Y, Feng YL, Yu XY, Gui Q. TBAI-catalyzed selective synthesis of sulfonamides and β-aryl sulfonyl enamines: coupling of arenesulfonyl chlorides and sodium sulfinates with tert-amines. Org Biomol Chem 2019; 17:2715-2720. [PMID: 30775769 DOI: 10.1039/c8ob02992j] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
A simple, practical and metal-free method has been developed for the synthesis of sulfonamides and β-arylsulfonyl enamines via the selective cleavage of C-N and C-H bonds through the iodine-catalyzed oxidation of arenesulfonyl chlorides and sodium sulfinates with tert-amines. The method uses commercially available inexpensive catalysts and oxidants, and has a wide substrate scope and operational simplicity.
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Affiliation(s)
- Hongmei Jiang
- College of Science, Hunan Agricultural University, Changsha 410128, People's Republic of China.
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91
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Takeda N, Oma R, Kogure Y, Sakakibara F, Tanaka Y, Unno M. Synthesis and properties of dimethylpalladium complex with new PS3-type tripodal tetradentate ligand. J Organomet Chem 2019. [DOI: 10.1016/j.jorganchem.2019.07.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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92
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Kahya D, Eroğlu F. Electrophilic amination of Cu(I) catalyzed phenylmagnesium bromide with N,O-bis(trimethylsilyl)hydroxylamine in THF:N-donor solvent. Control of C–N and C–O chemoselectivity. J Organomet Chem 2019. [DOI: 10.1016/j.jorganchem.2019.120884] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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93
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Abstract
The article discusses the basic properties of fluorine atom that have made it so useful in drug development. It presents several examples of therapeutically useful drugs acting against many life-threatening diseases along with the mechanism as to how fluorine influences the drug activity. It has been pointed out that fluorine, due to its ability to increase the lipophilicity of the molecule, greatly affects the hydrophobic interaction between the drug molecule and the receptor. Because of its small size, it hardly produces any steric effect, rather due to electronic properties enters into electrostatic and hydrogen-bond interactions. Thus, it greatly affects the drug-receptor interaction and leads to increase the activity of the drugs.
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Affiliation(s)
- Satya Prakash Gupta
- Department of Pharmaceutical Technology, Meerut Institute of Engineering and Technology, Meerut 250005, India
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94
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Qin A, Zhu G, Chen Q, Qian H, Ma S. Palladium‐Catalyzed Desulfitative Cross‐Coupling Reaction of Sodium Sulfinates with Propargylic Carbonates. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900698] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Anni Qin
- Research Center for Molecular Recognition and Synthesis, Department of ChemistryFudan University 220 Handan Lu Shanghai 200433 People's Republic of China
| | - Guirong Zhu
- Research Center for Molecular Recognition and Synthesis, Department of ChemistryFudan University 220 Handan Lu Shanghai 200433 People's Republic of China
| | - Qin Chen
- Research Center for Molecular Recognition and Synthesis, Department of ChemistryFudan University 220 Handan Lu Shanghai 200433 People's Republic of China
| | - Hui Qian
- Research Center for Molecular Recognition and Synthesis, Department of ChemistryFudan University 220 Handan Lu Shanghai 200433 People's Republic of China
| | - Shengming Ma
- Research Center for Molecular Recognition and Synthesis, Department of ChemistryFudan University 220 Handan Lu Shanghai 200433 People's Republic of China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic ChemistryChinese Academy of Sciences 345 Lingling Lu Shanghai 200032 People's Republic of China
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95
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Liu Q, Yang B. Desulfinative palladium‐catalyzed cross‐coupling of arylsulfonyl hydrazides with aryl bromides under air. Appl Organomet Chem 2019. [DOI: 10.1002/aoc.5140] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Qingling Liu
- Department of Chemistry and Chemical EngineeringXinxiang University Xinxiang 453003 People's Republic of China
| | - Bo Yang
- Department of Chemistry and Chemical EngineeringXinxiang University Xinxiang 453003 People's Republic of China
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96
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Pelosi A, Lanari D, Temperini A, Curini M, Rosati O. Reductive Etherification of Aldehydes and Ketones with Alcohols and Triethylsilane Catalysed by Yb(OTf)
3
: an Efficient One‐Pot Benzylation of Alcohols. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900281] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Azzurra Pelosi
- Dipartimento di Scienze FarmaceuticheUniversità degli Studi- via del Liceo 1- 06123 Perugia
| | - Daniela Lanari
- Dipartimento di Scienze FarmaceuticheUniversità degli Studi- via del Liceo 1- 06123 Perugia
| | - Andrea Temperini
- Dipartimento di Scienze FarmaceuticheUniversità degli Studi- via del Liceo 1- 06123 Perugia
| | - Massimo Curini
- Dipartimento di Scienze FarmaceuticheUniversità degli Studi- via del Liceo 1- 06123 Perugia
| | - Ornelio Rosati
- Dipartimento di Scienze FarmaceuticheUniversità degli Studi- via del Liceo 1- 06123 Perugia
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97
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Dwivedi V, Kalsi D, Sundararaju B. Electrochemical‐/Photoredox Aspects of Transition Metal‐Catalyzed Directed C−H Bond Activation. ChemCatChem 2019. [DOI: 10.1002/cctc.201900680] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Vikas Dwivedi
- Department of ChemistryIndian Institute of Technology Kanpur Kanpur Uttar Pradesh 208 016 India
| | - Deepti Kalsi
- Department of ChemistryIndian Institute of Technology Kanpur Kanpur Uttar Pradesh 208 016 India
| | - Basker Sundararaju
- Department of ChemistryIndian Institute of Technology Kanpur Kanpur Uttar Pradesh 208 016 India
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98
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Zou XR, Liao SM, Huang KW, Liang LC. Chemistry of Anilido Phosphine Complexes of Nickel. CHEM LETT 2019. [DOI: 10.1246/cl.190216] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Xue-Ru Zou
- Department of Chemistry, National Sun Yat-sen University, Kaohsiung 80424, Taiwan
| | - Shu-Mei Liao
- Department of Chemistry, National Sun Yat-sen University, Kaohsiung 80424, Taiwan
| | - Kuo-Wei Huang
- KAUST Catalysis Center and Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Lan-Chang Liang
- Department of Chemistry, National Sun Yat-sen University, Kaohsiung 80424, Taiwan
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
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99
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100
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Usami K, Yamaguchi E, Tada N, Itoh A. Transition-Metal-Free Synthesis of Phenanthridinones through Visible-Light-Driven Oxidative C-H Amidation. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900536] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Kaoru Usami
- Gifu Pharmaceutical University; 1-25-4, Daigaku-nishi Gifu 501-1196 Japan
| | - Eiji Yamaguchi
- Gifu Pharmaceutical University; 1-25-4, Daigaku-nishi Gifu 501-1196 Japan
| | - Norihiro Tada
- Gifu Pharmaceutical University; 1-25-4, Daigaku-nishi Gifu 501-1196 Japan
| | - Akichika Itoh
- Gifu Pharmaceutical University; 1-25-4, Daigaku-nishi Gifu 501-1196 Japan
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