1
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Westawker LP, Khusnutdinova JK, Wallick RF, Mirica LM. Palladium K-edge X-ray Absorption Spectroscopy Studies on Controlled Ligand Systems. Inorg Chem 2023; 62:21128-21137. [PMID: 38039413 DOI: 10.1021/acs.inorgchem.3c03032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2023]
Abstract
X-ray absorption spectroscopy (XAS) is widely used across the life and physical sciences to identify the electronic properties and structure surrounding a specific element. XAS is less often used for the characterization of organometallic compounds, especially for sensitive and highly reactive species. In this study, we used solid- and solution-phase XAS to compare a series of 25 palladium complexes in controlled ligand environments. The compounds include palladium centers in the formal I, II, III, and IV oxidation states, supported by tridentate and tetradentate macrocyclic ligands, with different halide and methyl ligand combinations. The Pd K-edge energies increased not only upon oxidizing the metal center but also upon increasing the denticity of the ligand framework, substituting sigma-donating methyl groups with chlorides, and increasing the charge of the overall metal complex by replacing charged ligands with neutral ligands. These trends were then applied to characterize compounds whose oxidation states were otherwise unconfirmed.
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Affiliation(s)
- Luke P Westawker
- Department of Chemistry, University of Illinois at Urbana-Champaign, 600 S. Mathews Avenue, Urbana, Illinois 61801, United States
| | - Julia K Khusnutdinova
- Coordination Chemistry and Catalysis Unit, Okinawa Institute of Science and Technology Graduate University, 1919-1 Tancha, Onna-son, Okinawa 904-0495, Japan
| | - Rachel F Wallick
- Department of Chemistry, University of Illinois at Urbana-Champaign, 600 S. Mathews Avenue, Urbana, Illinois 61801, United States
| | - Liviu M Mirica
- Department of Chemistry, University of Illinois at Urbana-Champaign, 600 S. Mathews Avenue, Urbana, Illinois 61801, United States
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2
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Ajitha M, Haines BE, Musaev DG. Mechanism and Selectivity of Copper-Catalyzed Bromination of Distal C(sp 3)-H Bonds. Organometallics 2023; 42:2467-2476. [PMID: 37772274 PMCID: PMC10526628 DOI: 10.1021/acs.organomet.2c00554] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Indexed: 02/25/2023]
Abstract
Unactivated C(sp3)-H bonds are the most challenging substrate class for transition metal-catalyzed C-H halogenation. Recently, the Yu group [Liu, T.; Myers, M. C.; Yu, J. Q. Angew. Chem., Int. Ed.2017, 56 (1), 306-309] has demonstrated that a CuII/phenanthroline catalyst and BrN3, generated in situ from NBS and TMSN3 precursors, can achieve selective C-H bromination distal to a directing group. The current understanding of the mechanism of this reaction has left numerous questions unanswered. Here, we investigated the mechanism of Cu-catalyzed C(sp3)-H bromination with distal site selectivity using density functional theory calculations. We found that this reaction starts with the Br-atom transfer from BrN3 to the Cu center that occurs via a small energy barrier at the singlet-triplet state seam of crossing. In the course of this reaction, the presence of the N-H bond in the substrate is critically important and acts as a directing group for enhancing the stability of the catalyst-substrate interaction and for the recruitment of the substrate to the catalyst. The required C-centered radical substrate formation occurs via direct C-H dehydrogenation by the Cu-coordinated N3 radical, rather than via the previously proposed N-H bond dehydrogenation and then the 1,5-H transfer from the γ-(C-H) bond to the N-radical center pathway. The C-H bond activation by the azide radical is a regioselectivity-controlling step. The following bromination of the C-centered radical by the Cu-coordinated bromine completes the product formation. This reaction step is the rate-limiting step, occurs at the singlet-to-triplet state seam of the crossing point, and is exergonic.
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Affiliation(s)
- Manjaly
J. Ajitha
- Cherry L. Emerson Center for Scientific
Computation, Emory University, 1515 Dickey Drive, Atlanta, Georgia 30322, United States
| | | | - Djamaladdin G. Musaev
- Cherry L. Emerson Center for Scientific
Computation, Emory University, 1515 Dickey Drive, Atlanta, Georgia 30322, United States
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3
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Hashimoto R, Hanaya K, Sugai T, Higashibayashi S. Unified short syntheses of oxygenated tricyclic aromatic diterpenes by radical cyclization with a photoredox catalyst. Commun Chem 2023; 6:169. [PMID: 37604953 PMCID: PMC10442340 DOI: 10.1038/s42004-023-00979-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Accepted: 08/08/2023] [Indexed: 08/23/2023] Open
Abstract
The biomimetic two-phase strategy employing polyene cyclization and subsequent oxidation/substitution is an effective approach for divergent syntheses of [6-6-6]-tricyclic diterpenes. However, this strategy requires lengthy sequences for syntheses of oxygenated tricyclic aromatic abietane/podocarpane diterpenes owing to the many linear oxidation/substitution steps after cyclization. Here, we present a new synthetic route based on a convergent reverse two-phase strategy employing a reverse radical cyclization approach, which enabled the unified short syntheses of four aromatic abietane/podocarpane diterpenes and the divergent short syntheses of other related diterpenes. Oxygenated and substituted precursors for cyclization were convergently prepared through Friedel-Crafts acylation and rhodium-catalyzed site-selective iodination. Radical redox cyclization using an iridium photoredox catalyst involving neophyl rearrangement furnished the thermodynamically favored 6-membered ring preferentially. (±)-5,6-Dehydrosugiol, salvinolone, crossogumerin A, and Δ5-nimbidiol were synthesized in only 8 steps. An oxygenated cyclized intermediate was also useful for divergent derivatization to sugiol, ferruginol, saprorthoquinone, cryptomeriololide, and salvinolone.
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Affiliation(s)
- Riichi Hashimoto
- Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo, 105-8512, Japan.
| | - Kengo Hanaya
- Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo, 105-8512, Japan
| | - Takeshi Sugai
- Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo, 105-8512, Japan
| | - Shuhei Higashibayashi
- Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo, 105-8512, Japan.
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4
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Daher A, Abidi O, Hierso JC, Roger J. Alkali halides as nucleophilic reagent sources for N-directed palladium-catalysed ortho-C-H halogenation of s-tetrazines and other heteroaromatics. RSC Adv 2022; 12:30691-30695. [PMID: 36337962 PMCID: PMC9597855 DOI: 10.1039/d2ra06169d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Accepted: 10/17/2022] [Indexed: 06/16/2023] Open
Abstract
A general palladium-catalysed selective C-H halogenation reaction is reported, which was successfully achieved for a large variety of functionalized aromatic rings incorporating diverse N-directing groups. By using simple alkali halides of MX type as the nucleophilic reagent source (M = Li, Na, K, Cs and X = I, Br and Cl), and phenyliodanediacetate oxidant, clean C-H-iodination, bromination and chlorination reactions were performed. This general protocol of selective ortho-monohalogenation, which complements but contrasts with the classical methods using electrophilic reagents, is achievable in a short time (30 min) with microwave irradiation assistance. The reaction was extended to substrates bearing N-directing pyridine, pyrimidine, pyrazole, oxazoline, naphtho[1,2-d]thiazole, and azobenzene groups. Notably, the topical and selectivity-challenging s-tetrazine, as a nitrogen-rich heteroaromatic, was successfully halogenated by this protocol.
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Affiliation(s)
- Ahmad Daher
- Institut de Chimie Moléculaire de l'Université de Bourgogne (UMR-CNRS 6302), Université Bourgogne Franche-Comté (UBFC) 9 Avenue Alain Savary 21078 Dijon France
| | - Oumaima Abidi
- Institut de Chimie Moléculaire de l'Université de Bourgogne (UMR-CNRS 6302), Université Bourgogne Franche-Comté (UBFC) 9 Avenue Alain Savary 21078 Dijon France
| | - Jean-Cyrille Hierso
- Institut de Chimie Moléculaire de l'Université de Bourgogne (UMR-CNRS 6302), Université Bourgogne Franche-Comté (UBFC) 9 Avenue Alain Savary 21078 Dijon France
| | - Julien Roger
- Institut de Chimie Moléculaire de l'Université de Bourgogne (UMR-CNRS 6302), Université Bourgogne Franche-Comté (UBFC) 9 Avenue Alain Savary 21078 Dijon France
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5
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Barišić D, Pajić M, Halasz I, Babić D, Ćurić M. Mechanochemical halogenation of unsymmetrically substituted azobenzenes. Beilstein J Org Chem 2022; 18:680-687. [PMID: 35821698 PMCID: PMC9235908 DOI: 10.3762/bjoc.18.69] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Accepted: 06/01/2022] [Indexed: 12/29/2022] Open
Abstract
The direct and selective mechanochemical halogenation of C–H bonds in unsymmetrically substituted azobenzenes using N-halosuccinimides as the halogen source under neat grinding or liquid-assisted grinding conditions in a ball mill has been described. Depending on the azobenzene substrate used, halogenation of the C–H bonds occurs in the absence or only in the presence of PdII catalysts. Insight into the reaction dynamics and characterization of the products was achieved by in situ Raman and ex situ NMR spectroscopy and PXRD analysis. A strong influence of the different 4,4’-substituents of azobenzene on the halogenation time and mechanism was found.
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Affiliation(s)
- Dajana Barišić
- Division of Physical Chemistry, Ruđer Bošković Institute, Bijenička cesta 54, Zagreb, Croatia
| | - Mario Pajić
- Division of Physical Chemistry, Ruđer Bošković Institute, Bijenička cesta 54, Zagreb, Croatia
| | - Ivan Halasz
- Division of Physical Chemistry, Ruđer Bošković Institute, Bijenička cesta 54, Zagreb, Croatia
| | - Darko Babić
- Division of Physical Chemistry, Ruđer Bošković Institute, Bijenička cesta 54, Zagreb, Croatia
| | - Manda Ćurić
- Division of Physical Chemistry, Ruđer Bošković Institute, Bijenička cesta 54, Zagreb, Croatia
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6
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Wang Y, Wang H, Yang Q, Xie S, Zhu H. Quinazoline‐Assisted ortho‐Halogenation with N‐Halosuccinimides through Pa(II)‐Catalyzed C(sp2)‐H Activation. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Yong Wang
- Nanjing Tech University College of Chemistry and Molecular Engineering Nanjing CHINA
| | - Hui Wang
- Nanjing Tech University College of Chemistry and Molecular Engineering Nanjing CHINA
| | - Qifan Yang
- Nanjing Tech University College of Chemistry and Molecular Engineering Nanjing CHINA
| | - Shihua Xie
- Nanjing Tech University College of Chemistry and Molecular Engineering Nanjing CHINA
| | - Hongjun Zhu
- Nanjing Tech University Department of Applied Chemistry, College of Science No 30, South Puzhu 211816 Nanjing CHINA
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7
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Farshadfar K, Tizhoush SK, Ariafard A. Role of Brønsted Acids in Promoting Pd(OAc)2-Catalyzed Chlorination of Phenol Carbamates Using N-Chlorosuccinimide. ACS Catal 2022. [DOI: 10.1021/acscatal.1c05512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kaveh Farshadfar
- Department of Chemistry, Islamic Azad University, Central Tehran Branch, Poonak, Tehran 1469669191, Iran
| | - Samaneh K. Tizhoush
- Department of Chemistry, Islamic Azad University, Central Tehran Branch, Poonak, Tehran 1469669191, Iran
| | - Alireza Ariafard
- School of Natural Sciences─Chemistry, University of Tasmania, Private Bag 75, Hobart, Tasmania 7001, Australia
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8
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Ma R, Chen Y, Fang S, Jiang H, Yang S, Wu W. Palladium-catalyzed acetalization/cyclization of enynones with alcohols: rapid access to functionalized dihaloalkenyl dihydrofurans. Chem Commun (Camb) 2022; 58:13907-13910. [DOI: 10.1039/d2cc03949d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A novel Pd-catalyzed acetalization/cyclization of enynones and alcohols for the construction of dihaloalkenyl dihydrofuran derivatives is described.
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Affiliation(s)
- Ruize Ma
- School of Chemistry and Chemical Engineering, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China
| | - Yang Chen
- School of Chemistry and Chemical Engineering, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China
| | - Songjia Fang
- School of Chemistry and Chemical Engineering, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China
| | - Huanfeng Jiang
- School of Chemistry and Chemical Engineering, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China
| | - Shaorong Yang
- School of Chemistry and Chemical Engineering, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China
| | - Wanqing Wu
- School of Chemistry and Chemical Engineering, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China
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9
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Hirashita T, Watanabe H, Harada Y, Kurabayashi H, Yukinobu, Yamashita, Oizumi S, Araki S. Palladium‐Catalyzed Selective
o
‐Bromination of Mesoionic 1,3‐Diphenyltetrazolium‐5‐olate: Switching the Directing Group from Nitrogen to Oxygen. ChemistrySelect 2021. [DOI: 10.1002/slct.202103841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Tsunehisa Hirashita
- Life Science and Applied Chemistry Graduate School of Engineering Nagoya Institute of Technology Gokiso-cho, Showa-ku, Nagoya Aichi 466-8555 Japan
| | - Harue Watanabe
- Life Science and Applied Chemistry Graduate School of Engineering Nagoya Institute of Technology Gokiso-cho, Showa-ku, Nagoya Aichi 466-8555 Japan
| | - Yuki Harada
- Life Science and Applied Chemistry Graduate School of Engineering Nagoya Institute of Technology Gokiso-cho, Showa-ku, Nagoya Aichi 466-8555 Japan
| | - Hideaki Kurabayashi
- Life Science and Applied Chemistry Graduate School of Engineering Nagoya Institute of Technology Gokiso-cho, Showa-ku, Nagoya Aichi 466-8555 Japan
| | - Yukinobu
- Life Science and Applied Chemistry Graduate School of Engineering Nagoya Institute of Technology Gokiso-cho, Showa-ku, Nagoya Aichi 466-8555 Japan
| | - Yamashita
- Life Science and Applied Chemistry Graduate School of Engineering Nagoya Institute of Technology Gokiso-cho, Showa-ku, Nagoya Aichi 466-8555 Japan
| | - Shiyogo Oizumi
- Life Science and Applied Chemistry Graduate School of Engineering Nagoya Institute of Technology Gokiso-cho, Showa-ku, Nagoya Aichi 466-8555 Japan
| | - Shuki Araki
- Life Science and Applied Chemistry Graduate School of Engineering Nagoya Institute of Technology Gokiso-cho, Showa-ku, Nagoya Aichi 466-8555 Japan
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10
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Malapit CA, Prater MB, Cabrera-Pardo JR, Li M, Pham TD, McFadden TP, Blank S, Minteer SD. Advances on the Merger of Electrochemistry and Transition Metal Catalysis for Organic Synthesis. Chem Rev 2021; 122:3180-3218. [PMID: 34797053 DOI: 10.1021/acs.chemrev.1c00614] [Citation(s) in RCA: 95] [Impact Index Per Article: 31.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Synthetic organic electrosynthesis has grown in the past few decades by achieving many valuable transformations for synthetic chemists. Although electrocatalysis has been popular for improving selectivity and efficiency in a wide variety of energy-related applications, in the last two decades, there has been much interest in electrocatalysis to develop conceptually novel transformations, selective functionalization, and sustainable reactions. This review discusses recent advances in the combination of electrochemistry and homogeneous transition-metal catalysis for organic synthesis. The enabling transformations, synthetic applications, and mechanistic studies are presented alongside advantages as well as future directions to address the challenges of metal-catalyzed electrosynthesis.
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Affiliation(s)
- Christian A Malapit
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, Utah 84112, United States
| | - Matthew B Prater
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, Utah 84112, United States
| | - Jaime R Cabrera-Pardo
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, Utah 84112, United States
| | - Min Li
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, Utah 84112, United States
| | - Tammy D Pham
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, Utah 84112, United States
| | - Timothy Patrick McFadden
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, Utah 84112, United States
| | - Skylar Blank
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, Utah 84112, United States
| | - Shelley D Minteer
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, Utah 84112, United States
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11
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Shi R, Tan J, Wang Z, Wang Y. Oxidatively Induced Selective Carbon-Carbon Bond Formation From Isolated Rhodium(III) Complexes. Chemistry 2021; 27:14317-14321. [PMID: 34424573 DOI: 10.1002/chem.202102502] [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: 07/10/2021] [Indexed: 11/07/2022]
Abstract
This work focuses on oxidatively induced regioselective intramolecular C-C bond formations based on the RhIII complexes synthesized from dirhodium(II) trifluoroacetate with 2-arylpyridines. With the selection of electron-donating groups on the arene rings of 2-arylpyridines, the unusual meta-ortho C-C bond-forming was favored, which led to the formation of meta-substituted 2-arylpyridine homocoupling dimers. On the contrary, the electron-withdrawing groups have tendency to occur conventional ortho-ortho bond-forming, resulting in the formation of new RhIII complexes possessing the intriguing RhIII (TFA)3 fragment. Preliminary mechanistic experiments suggest that the sequential oxidation of RhIII occurred in the reaction.
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Affiliation(s)
- Ruoyi Shi
- Department of Chemistry, Sichuan University, Chengdu, 610064, P. R. China
| | - Jiantao Tan
- School of Primary Education, Chongqing Normal University, Chongqing, 400700, P. R. China
| | - Zhifan Wang
- Department of Chemistry, Sichuan University, Chengdu, 610064, P. R. China
| | - Yuanhua Wang
- Department of Chemistry, Sichuan University, Chengdu, 610064, P. R. China
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12
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Vardhan H, Al-Enizi AM, Nafady A, Pan Y, Yang Z, Gutiérrez HR, Han X, Ma S. Single-Pore versus Dual-Pore Bipyridine-Based Covalent-Organic Frameworks: An Insight into the Heterogeneous Catalytic Activity for Selective CH Functionalization. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2003970. [PMID: 32914540 DOI: 10.1002/smll.202003970] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 08/05/2020] [Indexed: 06/11/2023]
Abstract
Exponential growth in the field of covalent-organic frameworks (COFs) is emanating from the direct correlation between designing principles and desired properties. The comparison of catalytic activity between single-pore and dual-pore COFs is of importance to establish structure-function relationship. Herein, the synthesis of imine-linked dual-pore [(BPyDC)]x % -ETTA COFs (x = 0%, 25%, 50%, 75%, 100%) with controllable bipyridine content is fulfilled by three-component condensation of 4,4',4″,4'″-(ethene-1,1,2,2-tetrayl)tetraaniline (ETTA), 4,4'-biphenyldialdehyde, and 2,2'-bipyridyl-5,5'-dialdehyde in different stoichiometric ratio. The strong coordination of bipyridine moieties of [(BPyDC)]x % -ETTA COFs with palladium imparts efficient catalytic active sites for selective functionalization of sp2 CH bond to CX (X = Br, Cl) or CO bonds in good yield. To broaden the scope of regioselective CH functionalization, a wide range of electronically and sterically substituted substrates under optimized catalytic condition are investigated. A comparison of the catalytic activity of palladium decorated dual-pore frameworks with single-pore imine-linked Pd(II) @ Py-2,2'-BPyDC framework is undertaken. The finding of this work provides a sporadic example of chelation-assisted CH functionalization and disclosed an in-depth comparison of the relationship between superior catalytic activity and core properties of rationally designed imine linked frameworks.
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Affiliation(s)
- Harsh Vardhan
- Department of Chemistry, University of South Florida, 4202 E. Fowler Avenue, Tampa, FL, 33620, USA
| | - Abdullah M Al-Enizi
- Department of Chemistry, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Ayman Nafady
- Department of Chemistry, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Yanxiong Pan
- Department of Chemistry and Biochemistry, North Dakota State University, 1231 Albrecht Blvd., Fargo, ND, 58108, USA
| | - Zhongyu Yang
- Department of Chemistry and Biochemistry, North Dakota State University, 1231 Albrecht Blvd., Fargo, ND, 58108, USA
| | | | - Xiaolong Han
- School of Chemical Engineering, Northwest University, Xi'an, Shaanxi, 710069, China
| | - Shengqian Ma
- Department of Chemistry, University of South Florida, 4202 E. Fowler Avenue, Tampa, FL, 33620, USA
- Department of Chemistry, University of North Texas, 1508 W Mulberry St, Denton, TX, 76201, USA
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13
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Panigrahi D, Subramaniyan V, Mani G. Synthesis and structural characterizations of Pd(II) complexes bearing the new hexahydropyrimidine and tetrahydropyrimidinium based bis(pyrazole) ligands with DFT studies. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.129949] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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14
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Kakiuchi F, Kochi T. Palladium-Catalyzed Aromatic C-H Functionalizations Utilizing Electrochemical Oxidations. CHEM REC 2021; 21:2320-2331. [PMID: 33835682 DOI: 10.1002/tcr.202100050] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Revised: 03/29/2021] [Accepted: 03/30/2021] [Indexed: 12/28/2022]
Abstract
Transition-metal-catalyzed electrochemical C-H functionalizations have been extensively studied as atom- and step-economical clean methods in organic synthesis. In this account, we described our efforts on the palladium-catalyzed electrochemical C-H functionalizations, including C-H halogenations of arylpyridines and benzamide derivatives using HCl/HBr and I2 as a halogen source, a one-pot process giving teraryls via the palladium-catalyzed electrochemical C-H iodination and subsequent Suzuki-Miyaura coupling, and an iodine-mediated oxidative homo-coupling reaction of arylpyridines.
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Affiliation(s)
- Fumitoshi Kakiuchi
- Department of Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, Kanagawa, 223-8522, Japan
| | - Takuya Kochi
- Department of Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, Kanagawa, 223-8522, Japan
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15
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Boddapati SNM, Tamminana R, Alam MM, Gugulothu S, Varala R, Bollikolla HB. Efficient Pd( ii)-catalyzed regioselective ortho-halogenation of arylcyanamides. NEW J CHEM 2021. [DOI: 10.1039/d1nj01998h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
2-Halo arylcyanamides have been constructed from cyanamides via Pd(ii)-catalyzed selective ortho-halogenation under moderate reaction conditions.
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Affiliation(s)
- S. N. Murthy Boddapati
- Department of Chemistry, Acharya Nagarjuna University, N Nagar, Guntur, A. P-522510, India
- Department of Chemistry, Sir C R Reddy College, P G Courses, Eluru, A.P-534007, India
| | - Ramana Tamminana
- Department of Chemistry, GITAM Deemed to be University, Bengaluru Campus, Bengaluru Rural, Karnataka, 562163, India
| | - M. Mujahid Alam
- Department of Chemistry, College of Science, King Khalid University, PO Box 9004, Abha 61413, Saudi Arabia
| | - Sailaja Gugulothu
- Department of Chemistry, Acharya Nagarjuna University, N Nagar, Guntur, A. P-522510, India
| | | | - Hari Babu Bollikolla
- Department of Chemistry, Acharya Nagarjuna University, N Nagar, Guntur, A. P-522510, India
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16
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Kakiuchi F, Kochi T. New Strategy for Catalytic Oxidative C–H Functionalization: Efficient Combination of Transition-metal Catalyst and Electrochemical Oxidation. CHEM LETT 2020. [DOI: 10.1246/cl.200475] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Fumitoshi Kakiuchi
- Department of Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, Kanagawa 223-8522, Japan
| | - Takuya Kochi
- Department of Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, Kanagawa 223-8522, Japan
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17
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Ahmad A, Dutta HS, Kumar M, Khan AA, Raziullah, Koley D. Pd-Catalyzed C-H Halogenation of Indolines and Tetrahydroquinolines with Removable Directing Group. Org Lett 2020; 22:5870-5875. [PMID: 32657591 DOI: 10.1021/acs.orglett.0c01963] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Pd-catalyzed directing-group-assisted regioselective halogenations to C7 of indolines and C8 of tetrahydroquinolines were achieved in good to excellent yields. The practicality and utility of the developed method have been illustrated by various functional group transformations such as arylation, alkenylation, cyanation, and silylation utilizing the installed synthetic handle. The concise synthesis of primaquine, an antimalarial drug, and formal syntheses of two bioactive natural products, hippadine and pratosine, have also been demonstrated.
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Affiliation(s)
- Ashfaq Ahmad
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow 226031, India
| | | | - Mohit Kumar
- Academy of Scientific and Innovative Research, New Delhi 110001, India
| | - Afsar Ali Khan
- Academy of Scientific and Innovative Research, New Delhi 110001, India
| | - Raziullah
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow 226031, India
| | - Dipankar Koley
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow 226031, India.,Academy of Scientific and Innovative Research, New Delhi 110001, India
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18
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Yuan Y, Liang Y, Shi S, Liang Y, Jiao N. Efficient
Pd‐Catalyzed
C—H Oxidative Bromination of Arenes with Dimethyl Sulfoxide and Hydrobromic Acid
†. CHINESE J CHEM 2020. [DOI: 10.1002/cjoc.202000055] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Yizhi Yuan
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University Xue Yuan Rd. 38 Beijing 100191 China
| | - Yujie Liang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University Xue Yuan Rd. 38 Beijing 100191 China
| | - Shihui Shi
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University Xue Yuan Rd. 38 Beijing 100191 China
| | - Yu‐Feng Liang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University Xue Yuan Rd. 38 Beijing 100191 China
| | - Ning Jiao
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University Xue Yuan Rd. 38 Beijing 100191 China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences Shanghai 200062 China
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19
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Saito H, Yamamoto K, Sumiya Y, Liu L, Nogi K, Maeda S, Yorimitsu H. Palladium‐Catalyzed C−H Iodination of Arenes by Means of Sulfinyl Directing Groups. Chem Asian J 2020; 15:2442-2446. [DOI: 10.1002/asia.202000591] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Revised: 06/16/2020] [Indexed: 01/15/2023]
Affiliation(s)
- Hayate Saito
- Department of Chemistry Graduate School of Science Kyoto University Sakyo-ku Kyoto 606-8502 Japan
| | - Keita Yamamoto
- Department of Chemistry Graduate School of Science Kyoto University Sakyo-ku Kyoto 606-8502 Japan
| | - Yosuke Sumiya
- Department of Chemistry Faculty of Science Hokkaido University Sapporo 060-0810 Japan
| | - Ling‐Jun Liu
- Department of Chemistry Graduate School of Science Kyoto University Sakyo-ku Kyoto 606-8502 Japan
- Institute of Organic and Polymeric Materials National Taipei University of Technology Taipei 10608 Taiwan
| | - Keisuke Nogi
- Department of Chemistry Graduate School of Science Kyoto University Sakyo-ku Kyoto 606-8502 Japan
| | - Satoshi Maeda
- Department of Chemistry Faculty of Science Hokkaido University Sapporo 060-0810 Japan
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD) Hokkaido University Kita 21 Nishi 10, Kita-ku Sapporo Hokkaido 001-0021 Japan
| | - Hideki Yorimitsu
- Department of Chemistry Graduate School of Science Kyoto University Sakyo-ku Kyoto 606-8502 Japan
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20
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Tanaka J, Shibata Y, Joseph A, Nogami J, Terasawa J, Yoshimura R, Tanaka K. Rhodium-Catalyzed ortho-Bromination of O-Phenyl Carbamates Accelerated by a Secondary Amide-Pendant Cyclopentadienyl Ligand. Chemistry 2020; 26:5774-5779. [PMID: 31950561 DOI: 10.1002/chem.202000253] [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: 01/15/2020] [Indexed: 12/13/2022]
Abstract
It has been established that a newly developed cyclopentadienyl rhodium(III) [CpA RhIII ] complex, bearing an acidic secondary amide moiety on the Cp ring, is able to catalyze the ortho-bromination of O-phenyl carbamates with N-bromosuccinimide (NBS) at room temperature. The presence of the acidic secondary amide moiety on the CpA ligand accelerates the bromination by the hydrogen bond between the acidic NH group of the CpA ligand and the carbonyl group of NBS.
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Affiliation(s)
- Jin Tanaka
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8550, Japan
| | - Yu Shibata
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8550, Japan
| | - Anton Joseph
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8550, Japan
| | - Juntaro Nogami
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8550, Japan
| | - Jyunichi Terasawa
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8550, Japan
| | - Ryo Yoshimura
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8550, Japan
| | - Ken Tanaka
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8550, Japan
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21
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Meng D, Bi J, Dong Y, Hao B, Qin K, Li T, Zhu D. Salen-based hypercrosslinked polymer-supported Pd as an efficient and recyclable catalyst for C-H halogenation. Chem Commun (Camb) 2020; 56:2889-2892. [PMID: 32037434 DOI: 10.1039/c9cc09781c] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
In this work, we report the first use of a salen-based hypercrosslinked polymer-supported Pd catalyst to carry out C-H halogenation. This catalyst can effectively catalyze C-H bromination and chlorination even better than its homogeneous counterpart Pd(OAc)2. It also showed excellent reusability without loss of catalytic activity for ten cycles. A broad substrate scope was explored and moderate to excellent yields were obtained.
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Affiliation(s)
- Di Meng
- Hubei Key laboratory of Material Chemistry and Service Failure, Key laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
| | - Jiajun Bi
- Hubei Key laboratory of Material Chemistry and Service Failure, Key laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
| | - Yahao Dong
- Hubei Key laboratory of Material Chemistry and Service Failure, Key laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
| | - Bo Hao
- Hubei Key laboratory of Material Chemistry and Service Failure, Key laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
| | - Kaiwei Qin
- Hubei Key laboratory of Material Chemistry and Service Failure, Key laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
| | - Tao Li
- Hubei Key laboratory of Material Chemistry and Service Failure, Key laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
| | - Dajian Zhu
- Hubei Key laboratory of Material Chemistry and Service Failure, Key laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
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22
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Guilbaud J, Selmi A, Kammoun M, Contal S, Montalbetti C, Pirio N, Roger J, Hierso JC. C-H Halogenation of Pyridyl Sulfides Avoiding the Sulfur Oxidation: A Direct Catalytic Access to Sulfanyl Polyhalides and Polyaromatics. ACS OMEGA 2019; 4:20459-20469. [PMID: 31858029 PMCID: PMC6906771 DOI: 10.1021/acsomega.9b01636] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Accepted: 08/23/2019] [Indexed: 05/27/2023]
Abstract
Palladium-catalyzed oxidative C-H halogenation and acetoxylation reactions of S-unprotected sulfides, selectively directed by pyridinyl groups, allows the formation of C-X bonds (X = I, Br, Cl, OAc) by using simple halosuccinimide or phenyliodine diacetate (PIDA) oxidants. The undesired formation of sulfoxides and/or sulfones, which are usually observed under oxidative conditions, is fully obviated. Under the solvent-dependent conditions that we proposed, sulfide C-H functionalization is achieved in less than 1 h without any direct electrophilic halogenation at the pyridine moiety. N-Directed ortho-C-H activation of aryl also facilitates dibromination reactions which are hardly accessible with sulfone and sulfoxide counterparts because of their higher structural rigidity. This general method gives a straightforward access to polyhalide sulfides, without an organosulfur reduction step or protection-deprotection sequence. Polyhalide sulfides are valuable synthons that give a practical entry to new constrained polyaromatic and biphenyl sulfides, including synthetically challenging unsymmetrical examples.
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Affiliation(s)
- Johan Guilbaud
- Institut
de Chimie Moléculaire de l’Université de Bourgogne
(ICMuB), UMR-CNRS 6302, Université
de Bourgogne Franche-Comté (UBFC), 9 avenue Alain Savary, 21078 Dijon, France
| | - Awatef Selmi
- Institut
de Chimie Moléculaire de l’Université de Bourgogne
(ICMuB), UMR-CNRS 6302, Université
de Bourgogne Franche-Comté (UBFC), 9 avenue Alain Savary, 21078 Dijon, France
- Institut
Supérieur de Biotechnologie, Unité de Recherche de Chimie
Médicinale et Environnementale (UR-17-ES-40), Université de Sfax, Route Soukra Km 4, BP1175-3038 Sfax, Tunisia
| | - Majed Kammoun
- Institut
Supérieur de Biotechnologie, Unité de Recherche de Chimie
Médicinale et Environnementale (UR-17-ES-40), Université de Sfax, Route Soukra Km 4, BP1175-3038 Sfax, Tunisia
| | | | | | - Nadine Pirio
- Institut
de Chimie Moléculaire de l’Université de Bourgogne
(ICMuB), UMR-CNRS 6302, Université
de Bourgogne Franche-Comté (UBFC), 9 avenue Alain Savary, 21078 Dijon, France
| | - Julien Roger
- Institut
de Chimie Moléculaire de l’Université de Bourgogne
(ICMuB), UMR-CNRS 6302, Université
de Bourgogne Franche-Comté (UBFC), 9 avenue Alain Savary, 21078 Dijon, France
| | - Jean-Cyrille Hierso
- Institut
de Chimie Moléculaire de l’Université de Bourgogne
(ICMuB), UMR-CNRS 6302, Université
de Bourgogne Franche-Comté (UBFC), 9 avenue Alain Savary, 21078 Dijon, France
- Institut
Universitaire de France (IUF), 103 Boulevard, Saint Michel, 75005
Cedex Paris, France
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23
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24
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Jaiswal Y, Kumar A. Acid-promoted palladium(II)-catalyzed ortho-halogenation of primary benzamides: En route to halo-arenes. CATAL COMMUN 2019. [DOI: 10.1016/j.catcom.2019.105784] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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25
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Ruhs NP, Khusnutdinova JR, Rath NP, Mirica LM. Mononuclear Organometallic Pd(II), Pd(III), and Pd(IV) Complexes Stabilized by a Pyridinophane Ligand with a C-Donor Group. Organometallics 2019. [DOI: 10.1021/acs.organomet.9b00505] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Nicholas P. Ruhs
- Department of Chemistry, Washington University in St. Louis, One Brookings Drive, St. Louis, Missouri 63130-4899, United States
| | - Julia R. Khusnutdinova
- Okinawa Institute of Science and Technology Graduate University, Coordination Chemistry and Catalysis Unit, 1919-1 Tancha, Onna-son, Okinawa 904-0495, Japan
| | - Nigam P. Rath
- Department of Chemistry and Biochemistry, One University Boulevard, University of Missouri-St. Louis, St. Louis, Missouri 63121-4400, United States
| | - Liviu M. Mirica
- Department of Chemistry, University of Illinois at Urbana−Champaign, 600 S. Mathews Avenue, Urbana, Illinois 61801, United States
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26
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Majeed MH, Shayesteh P, Tunå P, Persson AR, Gritcenko R, Wallenberg LR, Ye L, Hulteberg C, Schnadt J, Wendt OF. Directed C-H Halogenation Reactions Catalysed by Pd II Supported on Polymers under Batch and Continuous Flow Conditions. Chemistry 2019; 25:13591-13597. [PMID: 31418957 DOI: 10.1002/chem.201902949] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Revised: 08/14/2019] [Indexed: 12/21/2022]
Abstract
A new generation of N-heterocyclic carbene palladium(II) complexes containing vinyl groups in different positions in the backbone of the N-heterocycle have been developed. The fully characterised monomers were copolymerised with divinylbenzene to fabricate robust polymer supported NHC-PdII complexes and these polymers were applied as heterogeneous catalysts in directed C-H halogenation of arenes with a pyridine-type directing group. The catalysts demonstrated medium-high catalytic activity with up to 90 % conversion and 100 % selectivity in chlorination. They are heterogeneous and recyclable (at least six times) with no significant leaching of palladium in batch mode catalysis. The best catalyst was also applied under continuous flow conditions where it disclosed an exceptional activity (90 % conversion) and 100 % selectivity for the mono-halogenated product for at least six days, with no leaching of palladium, no loss of activity and an ability to maintain the original oxidation state of PdII .
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Affiliation(s)
- Maitham H Majeed
- Centre for Analysis and Synthesis, Department of Chemistry, Lund University, Box 124, 221 00, Lund, Sweden
| | - Payam Shayesteh
- Division of Synchrotron Radiation Research, Department of Physics, Lund University, Box 118, 221 00, Lund, Sweden
| | - Per Tunå
- Department of Chemical Engineering, Lund University, Box 124, 221 00, Lund, Sweden
| | - Axel R Persson
- Centre for Analysis and Synthesis, Department of Chemistry, Lund University, Box 124, 221 00, Lund, Sweden.,National Centre for High Resolution Electron Microscopy (nCHREM), Lund University, Box 124, 221 00, Lund, Sweden
| | - Roman Gritcenko
- Centre for Analysis and Synthesis, Department of Chemistry, Lund University, Box 124, 221 00, Lund, Sweden
| | - L Reine Wallenberg
- Centre for Analysis and Synthesis, Department of Chemistry, Lund University, Box 124, 221 00, Lund, Sweden.,National Centre for High Resolution Electron Microscopy (nCHREM), Lund University, Box 124, 221 00, Lund, Sweden
| | - Lei Ye
- Centre for Applied Life Sciences, Department of Chemistry, Lund University, Box 124, 221 00, Lund, Sweden
| | - Christian Hulteberg
- Department of Chemical Engineering, Lund University, Box 124, 221 00, Lund, Sweden
| | - Joachim Schnadt
- Division of Synchrotron Radiation Research, Department of Physics, Lund University, Box 118, 221 00, Lund, Sweden
| | - Ola F Wendt
- Centre for Analysis and Synthesis, Department of Chemistry, Lund University, Box 124, 221 00, Lund, Sweden
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27
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Vu HM, Chen F, Li X. Acetoxylation and Halogenation of 2‐Arylbenzoxazinones via Palladium‐Catalyzed C(sp
2
)‐H Bond Oxidation. ChemistrySelect 2019. [DOI: 10.1002/slct.201902611] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Huu Manh Vu
- School of Chemical and Biological EngineeringUniversity of Science and Technology Beijing 30 Xueyuan Road, Haidian District Beijing 100083 PR China
| | - Fei‐Wu Chen
- School of Chemical and Biological EngineeringUniversity of Science and Technology Beijing 30 Xueyuan Road, Haidian District Beijing 100083 PR China
| | - Xu‐Qin Li
- School of Chemical and Biological EngineeringUniversity of Science and Technology Beijing 30 Xueyuan Road, Haidian District Beijing 100083 PR China
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28
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Jaiswal Y, Kumar Y, Kumar A. The palladium(ii)-catalyzed regioselective ortho-C-H bromination/iodination of arylacetamides with in situ generated imidic acid as the directing group: mechanistic exploration. Org Biomol Chem 2019; 17:6809-6820. [PMID: 31246220 DOI: 10.1039/c9ob01082c] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In the present study, we report the palladium(ii)-catalyzed regioselective ortho-C-H bromination/iodination of challenging arylacetamide derivatives using N-halosuccinimides as halogenating agents. Diverse arylacetamides underwent the regioselective ortho-bromination and iodination of aromatic C-H bonds in the presence of a reactive benzylic C(sp3)-H bond without installing any bulky auxiliaries via unfavorable six-membered metallacycles. Weak coordination, the use of ubiquitous primary amides for challenging C-H functionalization, the simple catalytic system and the wide substrate scope are the key features of this transformation. Further, the halogenated amide derivatives were transformed into a variety of valuable synthons. Detailed mechanistic studies revealed some interesting aspects concerning the reaction pathway. We present for the first time strong evidence for the formation of imidic acid (in situ) from primary amides under Brønsted acid conditions that eventually aids in the stabilization of palladacycles of amide derivatives and drives regioselective C-X bond formation.
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Affiliation(s)
- Yogesh Jaiswal
- Department of Chemistry, Indian Institute of Technology Patna, Bihta 801106, Bihar, India.
| | - Yogesh Kumar
- Department of Chemistry, Indian Institute of Technology Patna, Bihta 801106, Bihar, India.
| | - Amit Kumar
- Department of Chemistry, Indian Institute of Technology Patna, Bihta 801106, Bihar, India.
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29
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Rajabi S, Jamali S, Naseri S, Jamjah A, Kia R, Samouei H, Mastrorilli P, Shahsavari HR, Raithby PR. Pt–M (M = Au and Tl) Dative Bonds Using Bis(cyclometalated)platinum(II) Complexes. Organometallics 2019. [DOI: 10.1021/acs.organomet.8b00907] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Sheida Rajabi
- Chemistry Department, Sharif University of Technology, P.O. Box 11155-3516, Tehran 1458889694, Iran
| | - Sirous Jamali
- Chemistry Department, Sharif University of Technology, P.O. Box 11155-3516, Tehran 1458889694, Iran
| | - Soroosh Naseri
- Chemistry Department, Sharif University of Technology, P.O. Box 11155-3516, Tehran 1458889694, Iran
| | - Ali Jamjah
- Chemistry Department, Sharif University of Technology, P.O. Box 11155-3516, Tehran 1458889694, Iran
| | - Reza Kia
- Chemistry Department, Sharif University of Technology, P.O. Box 11155-3516, Tehran 1458889694, Iran
| | - Hamidreza Samouei
- Department of Chemistry, Texas A&M University, P.O. Box 30012, College Station, Texas 77842-3012, United States
| | | | - Hamid R. Shahsavari
- Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731, Iran
| | - Paul R. Raithby
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, U.K
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30
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Díaz J, Mazzanti A, Orelli LR, Mancinelli M. Conformational and Stereodynamic Behavior of Five- to Seven-Membered 1-Aryl-2-iminoazacycloalkanes. ACS OMEGA 2019; 4:4712-4720. [PMID: 31459658 PMCID: PMC6648013 DOI: 10.1021/acsomega.9b00192] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Accepted: 02/19/2019] [Indexed: 06/10/2023]
Abstract
The stereodynamic behavior of 1-arylpyrrolidin-2-imines, having a Caryl-N stereogenic axis, has been studied by means of dynamic nuclear magnetic resonance and density functional theory calculations, evaluating the steric effect of ortho-aryl substituents. The rotational barrier due to E/Z isomerism about the -C=N-H bond was also determined. The dynamic stereochemistry of homologous six- and seven-membered iminoazacycloalkane rings and their oxo-analogues was also comparatively investigated, evidencing a ring size effect. It was found that the seven-membered heterocycle shows additional dynamic features because of ring inversion.
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Affiliation(s)
- Jimena
E. Díaz
- Department
of Industrial Chemistry “Toso Montanari”, University of Bologna, Viale Risorgimento 4, 40136 Bologna, Italy
- Departamento
de Química Orgánica. Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires. CONICET, Junín 956, 1113 Buenos Aires, Argentina
| | - Andrea Mazzanti
- Department
of Industrial Chemistry “Toso Montanari”, University of Bologna, Viale Risorgimento 4, 40136 Bologna, Italy
| | - Liliana R. Orelli
- Departamento
de Química Orgánica. Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires. CONICET, Junín 956, 1113 Buenos Aires, Argentina
| | - Michele Mancinelli
- Department
of Industrial Chemistry “Toso Montanari”, University of Bologna, Viale Risorgimento 4, 40136 Bologna, Italy
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31
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Yang QL, Wang XY, Wang TL, Yang X, Liu D, Tong X, Wu XY, Mei TS. Palladium-Catalyzed Electrochemical C–H Bromination Using NH4Br as the Brominating Reagent. Org Lett 2019; 21:2645-2649. [DOI: 10.1021/acs.orglett.9b00629] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Qi-Liang Yang
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Science, 345 Lingling Lu, Shanghai 200032, China
| | - Xiang-Yang Wang
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Science, 345 Lingling Lu, Shanghai 200032, China
| | - Tong-Lin Wang
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Science, 345 Lingling Lu, Shanghai 200032, China
| | - Xiang Yang
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Science, 345 Lingling Lu, Shanghai 200032, China
| | - Dong Liu
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Science, 345 Lingling Lu, Shanghai 200032, China
| | - Xiaofeng Tong
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Xin-Yan Wu
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Tian-Sheng Mei
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Science, 345 Lingling Lu, Shanghai 200032, China
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32
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Electrochemical Umpolung of Bromide: Transition-Metal-Free Bromination of Indole C⁻H Bond. Molecules 2019; 24:molecules24040696. [PMID: 30769954 PMCID: PMC6412264 DOI: 10.3390/molecules24040696] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2019] [Revised: 02/07/2019] [Accepted: 02/12/2019] [Indexed: 11/17/2022] Open
Abstract
A facile and sustainable electrochemical umpolung of bromide ion protocol was developed under mild reaction conditions. Transition metal catalysts and exogenous chemical oxidants were obviated for the bromination of C⁻H bond. Notably, graphite rod, which is commercially available at supermarkets and is inexpensive, was employed as the electrode material. This operationally easy and environmentally friendly approach accomplished the synthesis of 3-bromoindole in excellent yield and regioselectivity.
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33
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Cu-catalyzed direct ortho-chlorination/-oxygenation of aryls: Switching of oxidant, control the diversity of products. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2018.11.071] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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34
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Hong X, Zhou Q, Huang S, Cui HZ, Li ZM, Hou XF. Transition metal catalysed C7 and ortho-selective halogenation of 2-arylbenzo[d]oxazoles. Org Chem Front 2019. [DOI: 10.1039/c9qo00429g] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
An approach to construct C–X bonds on the C7 or ortho-position of 2-arylbenzo[d]oxazoles by Rh and Ru catalysts has been reported.
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Affiliation(s)
- Xi Hong
- Department of Chemistry
- Fudan University
- Shanghai 200433
- P. R. China
| | - Quan Zhou
- Department of Chemistry
- Fudan University
- Shanghai 200433
- P. R. China
| | - Shuang Huang
- Department of Chemistry
- Fudan University
- Shanghai 200433
- P. R. China
| | - He-Zhen Cui
- Department of Chemistry
- Fudan University
- Shanghai 200433
- P. R. China
| | - Zhi-Ming Li
- Department of Chemistry
- Fudan University
- Shanghai 200433
- P. R. China
| | - Xiu-Feng Hou
- Department of Chemistry
- Fudan University
- Shanghai 200433
- P. R. China
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35
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Yuan YC, Bruneau C, Roisnel T, Gramage-Doria R. Site-selective Ru-catalyzed C–H bond alkenylation with biologically relevant isoindolinones: a case of catalyst performance controlled by subtle stereo-electronic effects of the weak directing group. Catal Sci Technol 2019. [DOI: 10.1039/c9cy01231a] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
A general regio- and site-selective ruthenium-catalyzed C–H bond alkenylation with the biologically relevant isoindolinone fragment serving as a weak directing group is presented.
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Affiliation(s)
- Yu-Chao Yuan
- Univ Rennes
- CNRS
- ISCR – UMR6226
- F-35000 Rennes
- France
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36
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Nájera C, Beletskaya IP, Yus M. Metal-catalyzed regiodivergent organic reactions. Chem Soc Rev 2019; 48:4515-4618. [DOI: 10.1039/c8cs00872h] [Citation(s) in RCA: 127] [Impact Index Per Article: 25.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
This review discusses metal-catalysed regiodivergent additions, allylic substitutions, CH-activation, cross-couplings and intra- or intermolecular cyclisations.
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Affiliation(s)
- Carmen Nájera
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- Universidad de Alicante
- E-03080 Alicante
- Spain
| | - Irina P. Beletskaya
- Chemistry Department
- M. V. Lomonosov Moscow State University
- 119992 Moscow
- Russia
| | - Miguel Yus
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- Universidad de Alicante
- E-03080 Alicante
- Spain
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37
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Testa C, Roger J, Fleurat-Lessard P, Hierso JC. Palladium-Catalyzed Electrophilic C-H-Bond Fluorination: Mechanistic Overview and Supporting Evidence. European J Org Chem 2018. [DOI: 10.1002/ejoc.201801138] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Christelle Testa
- Institut de Chimie Moléculaire de l'Université de Bourgogne; UMR-CNRS 6302; Université de Bourgogne Franche-Comté; 9, avenue Alain Savary 21078 Dijon France
| | - Julien Roger
- Institut de Chimie Moléculaire de l'Université de Bourgogne; UMR-CNRS 6302; Université de Bourgogne Franche-Comté; 9, avenue Alain Savary 21078 Dijon France
| | - Paul Fleurat-Lessard
- Institut de Chimie Moléculaire de l'Université de Bourgogne; UMR-CNRS 6302; Université de Bourgogne Franche-Comté; 9, avenue Alain Savary 21078 Dijon France
| | - Jean-Cyrille Hierso
- Institut de Chimie Moléculaire de l'Université de Bourgogne; UMR-CNRS 6302; Université de Bourgogne Franche-Comté; 9, avenue Alain Savary 21078 Dijon France
- Institut Universitaire de France (IUF); 103 Boulevard Saint Michel 75005 Paris Cedex France
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38
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Dudkina YB, Fayzullin RR, Lyssenko KA, Gubaidullin AT, Kholin KV, Levitskaya AI, Balakina MY, Budnikova YH. Cyclometalated Nickel Complexes as Key Intermediates in C(sp2)–H Bond Functionalization: Synthesis, Catalysis, Electrochemical Properties, and DFT Calculations. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00536] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Yulia B. Dudkina
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, 8 Arbuzov Street, Kazan 420088, Russian Federation
| | - Robert R. Fayzullin
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, 8 Arbuzov Street, Kazan 420088, Russian Federation
| | - Konstantin A. Lyssenko
- A.N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, 28 Vavilov Street, Moscow 119991, Russian Federation
| | - Aidar T. Gubaidullin
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, 8 Arbuzov Street, Kazan 420088, Russian Federation
| | - Kirill V. Kholin
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, 8 Arbuzov Street, Kazan 420088, Russian Federation
| | - Alina I. Levitskaya
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, 8 Arbuzov Street, Kazan 420088, Russian Federation
| | - Marina Yu. Balakina
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, 8 Arbuzov Street, Kazan 420088, Russian Federation
| | - Yulia H. Budnikova
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, 8 Arbuzov Street, Kazan 420088, Russian Federation
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39
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Malinowski Z, Fornal E, Warpas A, Nowak M. Synthesis of benzoquinoline derivatives from formyl naphthylamines via Friedländer annulation under metal-free conditions. MONATSHEFTE FUR CHEMIE 2018. [DOI: 10.1007/s00706-018-2268-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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40
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Simayi R, Gillbard SM, Cross WB, Hope EG, Singh K, Solan GA. Ligand and solvent control of selectivity in the C-H activation of a pyridylimine-substituted 1-naphthalene; a combined synthetic and computational study. Dalton Trans 2018; 47:11680-11690. [PMID: 30101960 DOI: 10.1039/c8dt02565g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
The pyridylimine-substituted 1-naphthalenes, 2-(1-C10H7)-6-{CR[double bond, length as m-dash]N(2,6-i-Pr2C6H3)}C5H3N (R = Me HLMe, H HLH), react with Na2[PdCl4] in acetic acid at elevated temperature to afford either ortho-C-Hnaphthyl activated (LMe)PdCl (2ortho) or the unactivated adduct (HLH)PdCl2 (1b). Alternatively, 1b and its ketimine analogue (HLMe)PdCl2 (1a), can be prepared by treating (MeCN)2PdCl2 with either HLMe or HLH in chloroform at room temperature. Regio-selective ortho-C-H activation to form 2ortho can also be initiated by the thermolysis of 1a in acetic acid, while no reaction occurs under similar conditions with 1b. Interestingly, the C-H activation of HLMe to give 2ortho is found to be reversible with 100% deuteration of the peri-site occurring on reacting Na2[PdCl4] with HLMe in acetic acid-d4. By contrast, heating 1a in toluene gives a 55 : 45 mixture of 2ortho and its peri-activated isomer 2peri. Pure 2peri can, however, be obtained either from (LMe)PdOAc (3peri) by OAc/Cl exchange or by the sequential reactions of 1a with firstly silver acetate then with aqueous sodium chloride. Intriguingly, a peri to ortho interconversion occurs on heating 2peri in acetic acid to give 2ortho. DFT calculations have been used to investigate the C-H activation steps and it is found that in acetic acid ortho-C-H activation is kinetically and thermodynamically favoured but peri-CH activation is kinetically accessible (ΔΔG‡ = 2.4 kcal mol-1). By contrast in toluene, the reaction appears to be irreversible with the difference in barrier height for ortho- and peri-C-H activation being very small within the error of the method (ΔΔG‡ = 0.7 kcal mol-1), findings that are in agreement with the empirically observed product distribution for 2ortho and 2peri. Single crystal X-ray structures are reported for 1a, 1b, 2ortho and 2peri.
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Affiliation(s)
- Rena Simayi
- Department of Chemistry, University of Leicester, University Road, Leicester LE1 7RH, UK.
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41
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Dolewski RD, Fricke PJ, McNally A. Site-Selective Switching Strategies to Functionalize Polyazines. J Am Chem Soc 2018; 140:8020-8026. [PMID: 29792698 PMCID: PMC6280969 DOI: 10.1021/jacs.8b04530] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Many drug fragments and therapeutic compounds contain multiple pyridines and diazines. Developing site-selective reactions where specific C-H bonds can be transformed in polyazine structures would enable rapid access to valuable derivatives. We present a study that addresses this challenge by selectively installing a phosphonium ion as a versatile functional handle. Inherent factors that control site-selectivity are described along with mechanistically driven approaches for site-selective switching, where the C-+PPh3 group can be predictably installed at other positions in the polyazine system. Simple protocols, readily available reagents, and application to complex drug-like molecules make this approach appealing to medicinal chemists.
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Affiliation(s)
- Ryan D. Dolewski
- Department of Chemistry, Colorado State University, Fort Collins,
Colorado 80523, United States
| | - Patrick J. Fricke
- Department of Chemistry, Colorado State University, Fort Collins,
Colorado 80523, United States
| | - Andrew McNally
- Department of Chemistry, Colorado State University, Fort Collins,
Colorado 80523, United States
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42
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Das R, Kapur M. Transition-Metal-Catalyzed Site-Selective C−H Halogenation Reactions. ASIAN J ORG CHEM 2018. [DOI: 10.1002/ajoc.201800142] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Riki Das
- Department of Chemistry; Indian Institute of Science Education and Research Bhopal; Bhopal Bypass Road Bhauri, Bhopal 462066 MP India
| | - Manmohan Kapur
- Department of Chemistry; Indian Institute of Science Education and Research Bhopal; Bhopal Bypass Road Bhauri, Bhopal 462066 MP India
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43
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Ma X, Mo Q, Chang J, Xie K. Pd-catalyzed regioselective C-H chlorination of disubstituted 1,2,3-triazoles. SYNTHETIC COMMUN 2018. [DOI: 10.1080/00397911.2018.1455872] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Xinyuan Ma
- Faculty of Science, Kunming University of Science and Technology, Kunming, China
| | - Qiong Mo
- Faculty of Science, Kunming University of Science and Technology, Kunming, China
| | - Jie Chang
- Faculty of Science, Kunming University of Science and Technology, Kunming, China
| | - Kai Xie
- Faculty of Science, Kunming University of Science and Technology, Kunming, China
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44
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Liu Y, Wang QL, Zhou CS, Xiong BQ, Zhang PL, Yang CA, Tang KW. Oxidative C-C Bond Functionalization of Methylenecyclopropanes with Aldehydes for the Formation of 2-Acyl-3,4-dihydronaphthalenes. J Org Chem 2018; 83:4657-4664. [PMID: 29584957 DOI: 10.1021/acs.joc.8b00427] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
A new FeCl2- and DTBP (di- tert-butyl peroxide)-promoted oxidative ring-opening and cyclization of methylenecyclopropanes with aldehydes for the synthesis of 2-acyl-3,4-dihydronaphthalenes is presented. This oxidative cyclization reaction proceeds via a radical addition, ring-opening, and cyclization sequence facilitated by a Lewis acid, and it offers a practical and straightforward route for the oxidative cyclization of methylenecyclopropanes with an aromatic carbon and a C(sp2)-H bond by simultaneously forming two new carbon-carbon bonds.
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Affiliation(s)
- Yu Liu
- Department of Chemistry and Chemical Engineering , Hunan Institute of Science and Technology , Yueyang 414006 , China
| | - Qiao-Lin Wang
- Department of Chemistry and Chemical Engineering , Hunan Institute of Science and Technology , Yueyang 414006 , China
| | - Cong-Shan Zhou
- Department of Chemistry and Chemical Engineering , Hunan Institute of Science and Technology , Yueyang 414006 , China
| | - Bi-Quan Xiong
- Department of Chemistry and Chemical Engineering , Hunan Institute of Science and Technology , Yueyang 414006 , China
| | - Pan-Liang Zhang
- Department of Chemistry and Chemical Engineering , Hunan Institute of Science and Technology , Yueyang 414006 , China
| | - Chang-An Yang
- Department of Chemistry and Chemical Engineering , Hunan Institute of Science and Technology , Yueyang 414006 , China
| | - Ke-Wen Tang
- Department of Chemistry and Chemical Engineering , Hunan Institute of Science and Technology , Yueyang 414006 , China
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45
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Nguyen THL, Gigant N, Joseph D. Advances in Direct Metal-Catalyzed Functionalization of Azobenzenes. ACS Catal 2018. [DOI: 10.1021/acscatal.7b03583] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- T. H. Long Nguyen
- BioCIS, Université Paris-Sud, CNRS, Université Paris-Saclay, F-92296 Châtenay-Malabry, France
| | - Nicolas Gigant
- BioCIS, Université Paris-Sud, CNRS, Université Paris-Saclay, F-92296 Châtenay-Malabry, France
| | - Delphine Joseph
- BioCIS, Université Paris-Sud, CNRS, Université Paris-Saclay, F-92296 Châtenay-Malabry, France
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46
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Sathyamoorthi S, Banerjee S, Du Bois J, Burns NZ, Zare RN. Site-selective bromination of sp 3 C-H bonds. Chem Sci 2018; 9:100-104. [PMID: 29629078 PMCID: PMC5873043 DOI: 10.1039/c7sc04611a] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Accepted: 11/18/2017] [Indexed: 01/29/2023] Open
Abstract
A method for converting sp3 C-H to C-Br bonds using an N-methyl sulfamate directing group is described. The reaction employs Rh2(oct)4 and a mixture of NaBr and NaOCl and is performed in aqueous solution open to air. For all sulfamates examined, oxidation occurs with high selectivity at the γ-carbon, affording a uniquely predictable method for C-H bond halogenation. Results from a series of mechanistic experiments suggest that substrate oxidation likely proceeds by a radical chain process. Initial formation of an N-halogenated sulfamate followed by Rh-mediated homolysis generates an N-centered radical, which serves as the active oxidant.
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Affiliation(s)
- Shyam Sathyamoorthi
- Stanford University , Department of Chemistry , 333 Campus Drive , Stanford , CA 94305-4401 , USA . ; ;
| | - Shibdas Banerjee
- Indian Institute of Science Education and Research Tirupati , Karakambadi Road , Tirupati-517507 , India
| | - J Du Bois
- Stanford University , Department of Chemistry , 333 Campus Drive , Stanford , CA 94305-4401 , USA . ; ;
| | - Noah Z Burns
- Stanford University , Department of Chemistry , 333 Campus Drive , Stanford , CA 94305-4401 , USA . ; ;
| | - Richard N Zare
- Stanford University , Department of Chemistry , 333 Campus Drive , Stanford , CA 94305-4401 , USA . ; ;
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47
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Erbing E, Sanz-Marco A, Vázquez-Romero A, Malmberg J, Johansson MJ, Gómez-Bengoa E, Martín-Matute B. Base- and Additive-Free Ir-Catalyzed ortho-Iodination of Benzoic Acids: Scope and Mechanistic Investigations. ACS Catal 2018. [DOI: 10.1021/acscatal.7b02987] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Elis Erbing
- Department
of Organic Chemistry, Stockholm University, Stockholm 10691, Sweden
| | - Amparo Sanz-Marco
- Department
of Organic Chemistry, Stockholm University, Stockholm 10691, Sweden
| | - Ana Vázquez-Romero
- Department
of Organic Chemistry, Stockholm University, Stockholm 10691, Sweden
| | - Jesper Malmberg
- RIA iMed, Medicinal Chemistry, AstraZeneca R&D, Mölndal 43183, Sweden
| | | | - Enrique Gómez-Bengoa
- Departamento
de Química Orgánica I, Universidad del País Vasco/UPV-EHU, Manuel de Lardizabal 3, Donostia−San
Sebastián 20018, Spain
| | - Belén Martín-Matute
- Department
of Organic Chemistry, Stockholm University, Stockholm 10691, Sweden
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48
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Li J, Cong W, Gao Z, Zhang J, Yang H, Jiang G. Rh(iii)-Catalyzed regioselective mono- and di-iodination of azobenzenes using alkyl iodide. Org Biomol Chem 2018; 16:3479-3486. [DOI: 10.1039/c8ob00318a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
We developed a highly chemoselective oxidative access to ortho-iodinated azobenzenes by Rh(iii)-catalysis with alkyl iodide as the iodinating reagent.
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Affiliation(s)
- Jixing Li
- School of Chemistry & Chemical Engineering
- Linyi University
- Linyi 276005
- P. R. China
| | - Wenxia Cong
- School of Chemistry & Chemical Engineering
- Linyi University
- Linyi 276005
- P. R. China
| | - Zeng Gao
- State Key Laboratory for Oxo Synthesis and Selective Oxidation
- Center for Excellence in Molecular Synthesis
- Suzhou Research Institute of LICP
- Lanzhou Institute of Chemical Physics (LICP)
- Chinese Academy of Sciences
| | - Jinlong Zhang
- State Key Laboratory for Oxo Synthesis and Selective Oxidation
- Center for Excellence in Molecular Synthesis
- Suzhou Research Institute of LICP
- Lanzhou Institute of Chemical Physics (LICP)
- Chinese Academy of Sciences
| | - Huameng Yang
- State Key Laboratory for Oxo Synthesis and Selective Oxidation
- Center for Excellence in Molecular Synthesis
- Suzhou Research Institute of LICP
- Lanzhou Institute of Chemical Physics (LICP)
- Chinese Academy of Sciences
| | - Gaoxi Jiang
- State Key Laboratory for Oxo Synthesis and Selective Oxidation
- Center for Excellence in Molecular Synthesis
- Suzhou Research Institute of LICP
- Lanzhou Institute of Chemical Physics (LICP)
- Chinese Academy of Sciences
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49
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Yao H, Liu Y, Tyagarajan S, Streckfuss E, Reibarkh M, Chen K, Zamora I, Fontaine F, Goracci L, Helmy R, Bateman KP, Krska SW. Enabling Efficient Late-Stage Functionalization of Drug-Like Molecules with LC-MS and Reaction-Driven Data Processing. European J Org Chem 2017. [DOI: 10.1002/ejoc.201701573] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Huifang Yao
- Department of Pharmacokinetics; Pharmacodynamics and Drug Metabolism; Merck Sharp & Dohme Corp.; Kenilworth NJ USA
| | - Yong Liu
- Department of Process Research & Development; Merck Sharp & Dohme Corp.; Rahway NJ USA
| | - Sriram Tyagarajan
- HTE & Lead Discovery Capabilities; Merck Sharp & Dohme Corp.; Kenilworth NJ USA
| | - Eric Streckfuss
- HTE & Lead Discovery Capabilities; Merck Sharp & Dohme Corp.; Kenilworth NJ USA
| | - Mikhail Reibarkh
- Department of Process Research & Development; Merck Sharp & Dohme Corp.; Rahway NJ USA
| | - Kuanchang Chen
- HTE & Lead Discovery Capabilities; Merck Sharp & Dohme Corp.; Kenilworth NJ USA
| | - Ismael Zamora
- Lead Molecular Design, S.L.; Sant Cugat Del Valles Spain
| | | | - Laura Goracci
- Department of Chemistry, Biology and Biotechnology; University of Perugia; Perugia Italy
| | - Roy Helmy
- Department of Process Research & Development; Merck Sharp & Dohme Corp.; Rahway NJ USA
| | - Kevin P. Bateman
- Department of Pharmacokinetics; Pharmacodynamics and Drug Metabolism; Merck Sharp & Dohme Corp.; Kenilworth NJ USA
| | - Shane W. Krska
- HTE & Lead Discovery Capabilities; Merck Sharp & Dohme Corp.; Kenilworth NJ USA
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50
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Mboyi CD, Testa C, Reeb S, Genc S, Cattey H, Fleurat-Lessard P, Roger J, Hierso JC. Building Diversity in ortho-Substituted s-Aryltetrazines By Tuning N-Directed Palladium C–H Halogenation: Unsymmetrical Polyhalogenated and Biphenyl s-Aryltetrazines. ACS Catal 2017. [DOI: 10.1021/acscatal.7b03186] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | | | | | | | | | | | | | - Jean-Cyrille Hierso
- Institut Universitaire de France (IUF), 103 Boulevard Saint Michel, 75005 CEDEX Paris, France
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