1
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Choudhury P, Ghosh S, Biswas K, Basu B. A suitably fabricated ternary nanocomposite (Cu-CuO@rGO-SiO 2) as a sustainable and common heterogeneous catalyst for C-S, C-O and C-N coupling reactions. NANOSCALE 2024; 16:11592-11603. [PMID: 38857109 DOI: 10.1039/d4nr01116c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2024]
Abstract
A hybrid composite based on π-electron rich reduced graphene oxide (rGO) and mesoporous silica (SiO2) was prepared and decorated with copper species to afford a ternary nanocomposite material (Cu-CuO@rGO-SiO2). This copper-based nanocomposite was successfully used as a robust and multi-tasking heterogeneous catalyst for most common cross-coupling reactions (e.g. C-S, C-O and C-N coupling). A broad range of catalytic activities are believed to be originated from the synergism of different co-existing copper species (Cu(0) and CuO) and facile charge transfer from the metal ions towards rGO-SiO2 matrices, as established from XPS and other studies.
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Affiliation(s)
- Prasun Choudhury
- Department of Chemistry, University of North Bengal, Darjeeling 734013, India.
| | - Sujit Ghosh
- Raiganj Surendranath Mahavidyalaya, Raiganj, Uttar Dinajpur 733134, India
| | - Kinkar Biswas
- Department of Chemistry, University of North Bengal, Darjeeling 734013, India.
| | - Basudeb Basu
- Formerly Department of Chemistry, University of North Bengal, Darjeeling 734013, India.
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2
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Deng J, Huang H, Li Z, Jing X, Duan C. A novel Cu(I)-based coordination polymer for efficient photocatalytic oxidation of C(sp 3)-H bonds. Dalton Trans 2024; 53:10055-10059. [PMID: 38832528 DOI: 10.1039/d4dt01257g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2024]
Abstract
A novel coordination polymer CuCl-Pyhc was successfully synthesized, which can catalyze efficient and selective oxidation of C(sp3)-H bonds under mild conditions, exhibiting exceptional stability and remarkable recyclability. Furthermore, CuCl-Pyhc can mimic natural monooxygenases and activate oxygen into singlet oxygen (1O2).
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Affiliation(s)
- Jiangtao Deng
- State Key Laboratory of Fine Chemicals, College of Chemistry, Dalian University of Technology, 116024, P. R. China.
| | - Huilin Huang
- State Key Laboratory of Fine Chemicals, College of Chemistry, Dalian University of Technology, 116024, P. R. China.
| | - Zhentao Li
- State Key Laboratory of Fine Chemicals, College of Chemistry, Dalian University of Technology, 116024, P. R. China.
| | - Xu Jing
- State Key Laboratory of Fine Chemicals, College of Chemistry, Dalian University of Technology, 116024, P. R. China.
| | - Chunying Duan
- State Key Laboratory of Fine Chemicals, College of Chemistry, Dalian University of Technology, 116024, P. R. China.
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3
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Sonawane SC, Sabharwal G, Balakrishna MS. Cu I-Amidobis(phosphine)-Catalyzed Direct Amidation of Unactivated Alkanes via C(sp 3)-H Activation. Org Lett 2024. [PMID: 38804572 DOI: 10.1021/acs.orglett.4c01063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/29/2024]
Abstract
Herein, we describe an acid-base-free, sustainable, and efficient method for direct amidation of unactivated alkanes and toluene derivatives, using the dimeric CuI complex [CuI{o-Ph2PC6H4CONC6H4PPh2-o}2] (here onward referred to as [PNP-Cu]2). Using this method, C(sp3)-N bond formation was achieved through the activation of very challenging C(sp3)-H bonds in cycloalkanes, alkenes, allyl groups, and benzyl groups, with tolerance toward ketonic groups, heterocycles, and halide functionalities. One of the precatalysts, (PNHP-Cu-Npht) was isolated and structurally characterized. Isomerization in allyl-functionalized alkanes and selective benzylic alkylation in ketones were observed. This is a novel method for C(sp3)-N bond formation via direct N-alkylation of phthalimide, sulfonamide, benzamide, and phosphamidate.
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Affiliation(s)
- Sachin C Sonawane
- Phosphorus Laboratory, Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Gazal Sabharwal
- Phosphorus Laboratory, Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Maravanji S Balakrishna
- Phosphorus Laboratory, Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
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4
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Pati TK, Molla SA, Ghosh NN, Kundu M, Ajarul S, Maity P, Khamrai U, Maiti DK. 2-Pyridone-Directed Cu II-Catalyzed General Method of C(sp 2)-H Activation for C-S, C-Se, and C-N Cross-Coupling: Easy Access to Aryl Thioethers, Selenide Ethers, and Sulfonamides and DFT Study. J Org Chem 2024; 89:6798-6812. [PMID: 38662434 DOI: 10.1021/acs.joc.4c00120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/18/2024]
Abstract
We have demonstrated N-substituted 2-pyridones as an N,O-directing group for selective C(sp2)-H-activated thiolation, selenylation, and sulfonamidation of ortho C-H bonds of benzamides. This method utilizes a cost-effective Cu(II)-salt catalyst instead of precious metal catalysts, achieving high yields, including gram-scale synthesis and excellent functional group tolerance. We applied this protocol to access 30 different compounds with high yields, demonstrating thiolation of fluorine-substituted benzamides as well. Density functional theory (DFT) calculations support the mechanism, including acetate-supported concerted metalation deprotonation (CMD) steps and the unique role of dimethyl sulfoxide (DMSO) solvent. The facile synthesis of pharmaceutically important sulfonamides and other compounds highlights the method's potential in chemistry and medicinal chemistry.
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Affiliation(s)
- Tanmay K Pati
- Department of Chemistry, University of Calcutta, 92, A. P. C. Road, Kolkata700009, India
- Department of Chemistry, Rensselaer Polytechnic Institute, 110 eighth St, Troy, New York 12180, United States
- TCG Lifesciences Private Limited, Sector V, Salt Lake City, Kolkata 700091, India
| | - Sabir Ali Molla
- Department of Chemistry, University of Calcutta, 92, A. P. C. Road, Kolkata700009, India
| | | | - Mrinalkanti Kundu
- TCG Lifesciences Private Limited, Sector V, Salt Lake City, Kolkata 700091, India
| | - Sk Ajarul
- Government General Degree College at Salboni, Bhimpur, Paschim Medinipur 721516, India
| | - Pradip Maity
- Organic Chemistry Division, CSIR-National Chemical Laboratory, Pune 411008, India
| | - Uttam Khamrai
- TCG Lifesciences Private Limited, Sector V, Salt Lake City, Kolkata 700091, India
| | - Dilip K Maiti
- Department of Chemistry, University of Calcutta, 92, A. P. C. Road, Kolkata700009, India
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5
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Li X, Yue SH, Tan ZY, Liu SB, Luo DX, Zhou YJ, Liang XW. Catalytic asymmetric carbenoid α-C-H insertion of ether. RSC Adv 2024; 14:15167-15177. [PMID: 38741618 PMCID: PMC11090019 DOI: 10.1039/d4ra02206h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2024] [Accepted: 05/02/2024] [Indexed: 05/16/2024] Open
Abstract
Significant advancements have been made in catalytic asymmetric α-C-H bond functionalization of ethers via carbenoid insertion over the past decade. Effective asymmetric catalytic systems, featuring a range of chiral metal catalysts, have been established for the enantioselective synthesis of diverse ether substrates. This has led to the generation of various enantioenriched, highly functionalized oxygen-containing structural motifs, facilitating their application in the asymmetric synthesis of bioactive natural products.
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Affiliation(s)
- Xin Li
- Xiangya School of Pharmaceutical Sciences, Central South University Changsha 410013 China
| | - San-Hong Yue
- Hunan Key Laboratory of Skin Cancer and Psoriasis, Xiangya Hospital, Central South University Changsha 410013 China
| | - Zi-Yang Tan
- Xiangya School of Pharmaceutical Sciences, Central South University Changsha 410013 China
| | - Shu-Bo Liu
- Hunan Key Laboratory of Skin Cancer and Psoriasis, Xiangya Hospital, Central South University Changsha 410013 China
| | - De-Xiang Luo
- Xiangya School of Pharmaceutical Sciences, Central South University Changsha 410013 China
| | - Ying-Jun Zhou
- Xiangya School of Pharmaceutical Sciences, Central South University Changsha 410013 China
| | - Xiao-Wei Liang
- Hunan Key Laboratory of Skin Cancer and Psoriasis, Xiangya Hospital, Central South University Changsha 410013 China
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6
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Budiman YP, Perutz RN, Steel PG, Radius U, Marder TB. Applications of Transition Metal-Catalyzed ortho-Fluorine-Directed C-H Functionalization of (Poly)fluoroarenes in Organic Synthesis. Chem Rev 2024; 124:4822-4862. [PMID: 38564710 PMCID: PMC11046440 DOI: 10.1021/acs.chemrev.3c00793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 02/16/2024] [Accepted: 02/22/2024] [Indexed: 04/04/2024]
Abstract
The synthesis of organic compounds efficiently via fewer steps but in higher yields is desirable as this reduces energy and reagent use, waste production, and thus environmental impact as well as cost. The reactivity of C-H bonds ortho to fluorine substituents in (poly)fluoroarenes with metal centers is enhanced relative to meta and para positions. Thus, direct C-H functionalization of (poly)fluoroarenes without prefunctionalization is becoming a significant area of research in organic chemistry. Novel and selective methodologies to functionalize (poly)fluorinated arenes by taking advantage of the reactivity of C-H bonds ortho to C-F bonds are continuously being developed. This review summarizes the reasons for the enhanced reactivity and the consequent developments in the synthesis of valuable (poly)fluoroarene-containing organic compounds.
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Affiliation(s)
- Yudha P. Budiman
- Department
of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, 45363 Sumedang, Indonesia
| | - Robin N. Perutz
- Department
of Chemistry, University of York, York, YO10 5DD, U.K.
| | - Patrick G. Steel
- Department
of Chemistry, University of Durham, Science
Laboratories, South Road, Durham, DH1 3LE, U.K.
| | - Udo Radius
- Institute
for Inorganic Chemistry, Julius-Maximilians-Universität
Würzburg, Am Hubland, 97074 Würzburg Germany
| | - Todd B. Marder
- Institute
for Inorganic Chemistry, Julius-Maximilians-Universität
Würzburg, Am Hubland, 97074 Würzburg Germany
- Institute
for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg Germany
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7
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Bonku EM, Qin H, Odilov A, Abduahadi S, Guma SD, Yang F, Zhu F, Aisa HA, Shen J. Improved and ligand-free copper-catalyzed cyclization for an efficient synthesis of benzimidazoles from o-bromoarylamine and nitriles. RSC Adv 2024; 14:6906-6916. [PMID: 38410369 PMCID: PMC10895414 DOI: 10.1039/d4ra00245h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Accepted: 02/19/2024] [Indexed: 02/28/2024] Open
Abstract
We present an improved copper-catalyzed cyclization for an efficient synthesis of benzimidazoles from o-bromoarylamine and nitriles, under mild and ligand-free conditions. The optimal conditions yielded exceptional products of up to 98%, demonstrating the broad applicability of this synthetic strategy in generating a wide range of valuable imidazole derivatives. This methodology enables the efficient synthesis of various substituted benzimidazole derivatives and offers an environmentally friendly alternative to conventional methods. By eliminating the use of harsh reagents and high temperatures associated with traditional synthesis approaches, this method proves to be more efficient and robust. Notably, we successfully applied this synthetic approach to the synthesis of bendazol and thiabendazole, yielding 82% and 78%, respectively, on a 100 gram scale.
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Affiliation(s)
- Emmanuel Mintah Bonku
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences 555 Zuchongzhi Road Shanghai 201203 P. R. China
- University of Chinese Academy of Sciences No. 19A Yuquan Road Beijing 100049 P. R. China
| | - Hongjian Qin
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences 555 Zuchongzhi Road Shanghai 201203 P. R. China
- University of Chinese Academy of Sciences No. 19A Yuquan Road Beijing 100049 P. R. China
- State Key Laboratory Basis of Xinjiang Indigenous Medicinal Plants Resource Utilization, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences Urumqi Xinjiang 830011 P. R. China
| | - Abdullajon Odilov
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences 555 Zuchongzhi Road Shanghai 201203 P. R. China
- University of Chinese Academy of Sciences No. 19A Yuquan Road Beijing 100049 P. R. China
| | - Safomuddin Abduahadi
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences 555 Zuchongzhi Road Shanghai 201203 P. R. China
- University of Chinese Academy of Sciences No. 19A Yuquan Road Beijing 100049 P. R. China
| | - Samuel Desta Guma
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences 555 Zuchongzhi Road Shanghai 201203 P. R. China
- University of Chinese Academy of Sciences No. 19A Yuquan Road Beijing 100049 P. R. China
| | - Feipu Yang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences 555 Zuchongzhi Road Shanghai 201203 P. R. China
| | - Fuqiang Zhu
- Topharman Shanghai Co., Ltd. No. 388 Jialilue Road, Zhangjiang Hitech Park Shanghai 201203 P.R. China
| | - Haji A Aisa
- University of Chinese Academy of Sciences No. 19A Yuquan Road Beijing 100049 P. R. China
- State Key Laboratory Basis of Xinjiang Indigenous Medicinal Plants Resource Utilization, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences Urumqi Xinjiang 830011 P. R. China
| | - Jingshan Shen
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences 555 Zuchongzhi Road Shanghai 201203 P. R. China
- University of Chinese Academy of Sciences No. 19A Yuquan Road Beijing 100049 P. R. China
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8
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Mhaske K, Gangai S, Fernandes R, Kamble A, Chowdhury A, Narayan R. Aerobic Catalytic Cross-Dehydrogenative Coupling of Furans with Indoles Provides Access to Fluorophores with Large Stokes Shift. Chemistry 2024; 30:e202302929. [PMID: 38175849 DOI: 10.1002/chem.202302929] [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: 09/08/2023] [Indexed: 01/06/2024]
Abstract
Sustainability in chemical processes is a crucial aspect in contemporary chemistry with sustainable catalysis as a vital parameter of the same. There has been a renewed focus on utilizing earth-abundant metal catalysts to expand the repertoire of organic reactions. Furan is a versatile heterocycle of natural origin used for multiple applications. However, it has scarcely been used in cross-dehydrogenative coupling. In this work, we have explored the cross-dehydrogentive coupling of furans with indoles using commonly available, inexpensive FeCl3 ⋅ 6H2 O (<0.25 $/g) as catalyst in the presence of so called 'ultimate oxidant' - oxygen, without the need for any external ligand or additive. The reactions were found to be scalable and to work even under partially aqueous conditions. This makes the reaction highly economical, practical, operationally simple and sustainable. The methodology provides direct access to π-conjugated short oligomers consisting of furan, thiophene and indole. These compounds were found to show interesting fluorescence properties with remarkably large Stokes shift (up to 205 nm). Mechanistic investigations reveal that the reaction proceeds through chemoselective oxidation of indole by the metal catalyst followed by nucleophilic trapping by furan.
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Affiliation(s)
- Krishna Mhaske
- School of Chemical and Materials Sciences, Indian Institute of Technology Goa, Farmagudi, Goa, 403401, India
| | - Shon Gangai
- School of Chemical and Materials Sciences, Indian Institute of Technology Goa, Farmagudi, Goa, 403401, India
| | - Rushil Fernandes
- School of Chemical and Materials Sciences, Indian Institute of Technology Goa, Farmagudi, Goa, 403401, India
| | - Angulimal Kamble
- School of Chemical and Materials Sciences, Indian Institute of Technology Goa, Farmagudi, Goa, 403401, India
| | - Arkaprava Chowdhury
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, 400076, Maharashtra, India
| | - Rishikesh Narayan
- School of Chemical and Materials Sciences, Indian Institute of Technology Goa, Farmagudi, Goa, 403401, India
- School of Interdisciplinary Life Sciences, Indian Institute of Technology Goa, Farmagudi, Goa, 403401, India
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9
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Nasseri F, Nasseri MA, Kassaee MZ, Yavari I. Synergistic performance of a new bimetallic complex supported on magnetic nanoparticles for Sonogashira and C-N coupling reactions. Sci Rep 2023; 13:18153. [PMID: 37875534 PMCID: PMC10598020 DOI: 10.1038/s41598-023-44168-6] [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: 04/10/2023] [Accepted: 10/04/2023] [Indexed: 10/26/2023] Open
Abstract
This paper describes the synthesis of a novel Cu-Ni bimetallic system comprising of magnetic nanoparticles, as the core, and 4-amino-3,5-bis(pyridin-2-yl)-1,2,4-triazole (4-ABPT), as a conjugated bridge, between nickel and copper species. With low Cu and Ni loading (0.06 mol% Ni, 0.08 mol% Cu), the resulting Fe3O4@SiO2@4-ABPT/Cu-Ni showed to be a highly efficient catalyst for the Sonogashira and C-N cross-coupling reactions. The developed catalyst was well characterized by FT-IR, XRD, EDX-mapping, FE-SEM, TEM, ICP, VSM, TGA/DTG/DTA, LSV, and XPS techniques. Fe3O4@SiO2@4-ABPT/Cu-Ni nanocatalyst was compatible with a wide range of amines and aryl halides in the Sonogashira and C-N cross-coupling reactions and offered desired coupling products in high to excellent yields under palladium- and solvent-free conditions. Based on the XPS results, the 4-ABPT ligand can adjust electron transfer between Ni and Cu in Fe3O4@SiO2@4-ABPT/Cu-Ni, promoting the formation and stabilization of Cu+ and Ni3+ species. Electronic interactions and the synergistic effect between these metals increased the selectivity and activity of Fe3O4@SiO2@4-ABPT/Cu-Ni catalyst in the Sonogashira and C-N cross-coupling reactions compared with its monometallic counterparts. Additionally, the magnetic properties of Fe3O4@SiO2@4-ABPT/Cu-Ni facilitated its separation from the reaction mixture, promoting its reuse for several times with no significant loss in its catalytic activity or performance.
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Affiliation(s)
- Fatemeh Nasseri
- Department of Chemistry, Tarbiat Modares University, P.O. Box 14155-175, Tehran, Iran
- Department of Chemistry, Faculty of Basic Sciences, University of Birjand, P.O. Box 97175-615, Birjand, Iran
| | - Mohammad Ali Nasseri
- Department of Chemistry, Faculty of Basic Sciences, University of Birjand, P.O. Box 97175-615, Birjand, Iran.
| | - Mohamad Zaman Kassaee
- Department of Chemistry, Tarbiat Modares University, P.O. Box 14155-175, Tehran, Iran
| | - Issa Yavari
- Department of Chemistry, Tarbiat Modares University, P.O. Box 14155-175, Tehran, Iran
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10
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Rastogi GK, Deb ML, Baruah PK. Copper-catalysed dehydrogenative self-coupling/cyclization of 5-aminopyrazoles: synthesis and photophysical study of pyridazines. Chem Commun (Camb) 2023. [PMID: 37465848 DOI: 10.1039/d3cc02424e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/20/2023]
Abstract
An interesting self-coupling/cyclization of 5-aminopyrazoles is revealed, which provides a variety of pyridazine cores in reasonable yields. In this reaction, C(sp2)-C(sp2) and N-N bond formation occurs simultaneously in one reaction vessel. The photophysical properties of the synthesized compounds were also studied and some of them exhibited fluorescence properties with good quantum yields. A radical mediated reaction mechanism is proposed with the help of control experiments.
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Affiliation(s)
- Gaurav K Rastogi
- Department of Applied Sciences, GUIST, Gauhati University, Guwahati-781014, Assam, India.
- Department of Applied Organic Chemistry, CSIR-NEIST, Jorhat 785006, Assam, India
| | - Mohit L Deb
- Department of Applied Sciences, GUIST, Gauhati University, Guwahati-781014, Assam, India.
- Advanced Research Centre and Department of Chemistry, University of Science and Technology Meghalaya, Ri-Bhoi, Meghalaya-793101, India
| | - Pranjal K Baruah
- Department of Applied Sciences, GUIST, Gauhati University, Guwahati-781014, Assam, India.
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11
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Bhaduri N, Pawar AB. Redox-neutral C-H annulation strategies for the synthesis of heterocycles via high-valent Cp*Co(III) catalysis. Org Biomol Chem 2023; 21:3918-3941. [PMID: 37128760 DOI: 10.1039/d3ob00133d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
A variety of biologically active molecules, pharmaceuticals, and natural products consist of a nitrogen-containing heterocyclic backbone. The majority of them are isoquinolones, indoles, isoquinolines, etc.; thereby the synthesis and derivatization of such heterocycles are synthetically very relevant. Also, certain naphthol derivatives have high synthetic utility as agrochemicals and in dye industries. Previous approaches have utilized ruthenium, rhodium, or iridium which may not be desirable due to the high toxicity, low abundance, and high cost of such 4d and 5d metals. Moreover, the need for an external oxidant during the reaction also adds by-products to the system. A high-valent cobalt-catalyzed redox-neutral C-H functionalization strategy has emerged to be a far better alternative in this regard. The use of the non-noble metal cobalt allows for selectivity and specificity in product formation. Also, the redox-neutral concept avoids the use of an external oxidant either due to the presence of a metal in a non-variable oxidation state throughout the catalytic cycle or due to the presence of an oxidizing directing group or an oxidizing coupling partner. Such an oxidizing directing group not only directs the catalyst to a specific reaction site by chelation but also regenerates the catalyst at the end of the cycle. Certain bonds such as N-O, N-N, N-Cl, N-S, and C-S are the main game-players behind the oxidizing property of such directing groups. In the other case, the directing group only chelates the catalyst to a reaction center, whereas the oxidation is carried out by the upcoming group/coupling partner. Overall, merging the redox-neutral concept with the high-valent cobalt catalysis is paving the way forward toward a sustainable and environmentally friendly approach. This review critically describes the mechanistic understanding, scope, limitations, and synthesis of various biologically relevant heterocycles via the redox-neutral concept in the high-valent Cp*Co(III)-catalyzed C-H functionalization chemistry domain.
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Affiliation(s)
- Nilanjan Bhaduri
- School of Chemical Sciences, Indian Institute of Technology Mandi, Mandi, Himachal Pradesh, 175005, India.
| | - Amit B Pawar
- School of Chemical Sciences, Indian Institute of Technology Mandi, Mandi, Himachal Pradesh, 175005, India.
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12
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Yan SB, Wang R, Li ZG, Li AN, Wang C, Duan WL. Copper-catalyzed asymmetric C(sp 2)-H arylation for the synthesis of P- and axially chiral phosphorus compounds. Nat Commun 2023; 14:2264. [PMID: 37081007 PMCID: PMC10119316 DOI: 10.1038/s41467-023-37987-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Accepted: 04/04/2023] [Indexed: 04/22/2023] Open
Abstract
Transition metal-catalyzed C-H bond functionalization is an important method in organic synthesis, but the development of methods that are lower cost and have a less environmental impact is desirable. Here, a Cu-catalyzed asymmetric C(sp2)-H arylation is reported. With diaryliodonium salts as arylating reagents, a range of ortho-arylated P-chiral phosphonic diamides were obtained in moderate to excellent yields with high enantioselectivities (up to 92% ee). Meanwhile, enantioselective C-3 arylation of diarylphosphine oxide indoles was also realized under similar conditions to construct axial chirality.
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Affiliation(s)
- Shao-Bai Yan
- College of Chemistry and Chemical Engineering, Yangzhou University, 180 Siwangting Road, 225002, Yangzhou, China
| | - Rui Wang
- College of Chemistry and Chemical Engineering, Yangzhou University, 180 Siwangting Road, 225002, Yangzhou, China
| | - Zha-Gen Li
- College of Chemistry and Chemical Engineering, Yangzhou University, 180 Siwangting Road, 225002, Yangzhou, China
| | - An-Na Li
- College of Chemistry and Chemical Engineering, Yangzhou University, 180 Siwangting Road, 225002, Yangzhou, China
| | - Chuanyong Wang
- College of Chemistry and Chemical Engineering, Yangzhou University, 180 Siwangting Road, 225002, Yangzhou, China
| | - Wei-Liang Duan
- College of Chemistry and Chemical Engineering, Yangzhou University, 180 Siwangting Road, 225002, Yangzhou, China.
- College of Chemistry and Chemical Engineering, Inner Mongolia University, 235 West University Street, 010021, Hohhot, China.
- School of Chemistry and Chemical Engineering, Shaanxi Normal University, 620 Xi Changan Street, 710119, Xi'an, China.
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13
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Bhaskaran RP, Nayak KH, Sreelekha MK, Babu BP. Progress in copper-catalysed/mediated intramolecular dehydrogenative coupling. Org Biomol Chem 2023; 21:237-251. [PMID: 36448561 DOI: 10.1039/d2ob01796b] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Transition metal-catalysed C-H functionalization reactions are one of the most efficient synthetic methodologies to construct carbon-carbon and carbon-heteroatom bonds. The initial developments in the field were largely dominated by expensive transition metal catalysts. However, in the past decade, the focus of the catalyst shifted to first-row transition metals and copper catalysis contributed significantly. Abundant, cost-effective, and less toxic copper catalysts are an ideal green alternative to palladium and similar metals. The intramolecular dehydrogenative coupling itself developed as a prominent area of focus as the strategy straightaway affords complex polycyclic scaffolds in one pot. Regioselective activation of inert C-H bonds were made possible with copper catalysts and interestingly, oxygen served as the terminal oxidant in most of the cases. In the present review the focus is on the intramolecular dehydrogenative coupling reactions between carbon-hydrogen and heteroatom-hydrogen bonds to afford carbon-carbon and carbon-hetero atom bonds, catalysed/mediated by copper salts. Though the intermolecular dehydrogenative coupling reactions of copper have already been reviewed more than once, to the best of our knowledge this is the first comprehensive account of copper-based intramolecular dehydrogenative coupling.
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Affiliation(s)
- Rasmi P Bhaskaran
- Department of Chemistry National Institute of Technology Karnataka Surathkal, Mangalore, India - 575025.
| | - Kalinga H Nayak
- Department of Chemistry National Institute of Technology Karnataka Surathkal, Mangalore, India - 575025.
| | - Mariswamy K Sreelekha
- Department of Chemistry National Institute of Technology Karnataka Surathkal, Mangalore, India - 575025.
| | - Beneesh P Babu
- Department of Chemistry National Institute of Technology Karnataka Surathkal, Mangalore, India - 575025.
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14
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Ma J, Feng R, Zhou HL, Hao EJ, Shi Z, Dong ZB. One-Pot Synthesis of N,N-Diphenyl-2-benzothiazolamines from 1-(2-Iodophenyl)-3-phenylthioureas and Iodobenzenes. J Org Chem 2022; 87:14342-14351. [PMID: 36200367 DOI: 10.1021/acs.joc.2c01789] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An efficient copper-catalyzed synthesis of a variety of N,N-diphenyl-2-benzothiazolamines was developed. Starting from substituted 1-(2-iodophenyl)-3-phenylthioureas and substituted iodobenzenes, the reaction proceeded smoothly via a tandem manner in the presence of CuI to afford the corresponding N,N-diphenyl-2-benzothiazolamine derivatives with good functional group tolerance. The protocol features simple performance, easily available starting materials, a one-pot manner, and good functional group tolerance, providing a practical strategy for the preparation of poly-functionalized amines.
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Affiliation(s)
- Jie Ma
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430205, China
| | - Rong Feng
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430205, China
| | - Hao-Lin Zhou
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430205, China
| | - Er-Jun Hao
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, China
| | - Zhen Shi
- Hubei Key Laboratory of Biologic Resources Protection and Utilization, Hubei Minzu University, Enshi 445000, China
| | - Zhi-Bing Dong
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430205, China.,School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, China.,Key Laboratory of Green Chemical Process, Ministry of Education, Wuhan Institute of Technology, Wuhan 430205, China.,Hubei Key Laboratory of Novel Reactor and Green Chemistry Technology, Wuhan Institute of Technology, Wuhan 430205, China.,Hubei Key Laboratory of Biologic Resources Protection and Utilization, Hubei Minzu University, Enshi 445000, China
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15
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Copper-Catalyzed Reactions of Aryl Halides with N-nucleophiles and Their Possible Application for Degradation of Halogenated Aromatic Contaminants. Catalysts 2022. [DOI: 10.3390/catal12080911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
This review summarizes recent applications of copper or copper-based compounds as a nonprecious metal catalyst in N-nucleophiles-based dehalogenation (DH) reactions of halogenated aromatic compounds (Ar-Xs). Cu-catalyzed DH enables the production of corresponding nonhalogenated aromatic products (Ar-Nu), which are much more biodegradable and can be mineralized during aerobic wastewater treatment or which are principally further applicable. Based on available knowledge, the developed Cu-based DH methods enable the utilization of amines for effective cleavage of aryl-halogen bonds in organic solvents or even in an aqueous solution.
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16
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Ravi Kishore D, Sreenivasulu C, Satyanarayana G, Dapkekar AB. Recent Applications on Dual-Catalysis for C–C and C–X Cross-Coupling Reactions. SYNOPEN 2022. [DOI: 10.1055/a-1896-4168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022] Open
Abstract
AbstractCoupling reactions stand amid the most significant reactions in synthetic organic chemistry. Of late, these coupling strategies are being viewed as a versatile synthetic tool for a wide range of organic transformations in many sectors of chemistry, ranging from indispensable synthetic scaffolds and natural products of biological significance to novel organic materials. Further, the use of dual-catalysis in accomplishing various interesting cross-coupling transformations is an emerging field in synthetic organic chemistry, owing to their high catalytic performance rather than the use of a single catalyst. In recent years, synthetic organic chemists have given considerable attention to hetero-dual catalysis; wherein these catalytic systems have been employed for the construction of versatile carbon–carbon [C(sp
3)–C(sp
3), C(sp
3)–C(sp
2), C(sp
2)–C(sp
2)] and carbon–heteroatom (C–N, C–O, C–P, C–S) bonds. Therefore, in this mini-review, we are emphasizing recently developed various cross-coupling reactions catalysed by transition-metal dual-catalysis (i.e., using palladium and copper catalysts, but omitting the reports on photoredox/metal catalysis).1 Introduction2 Cu/Pd-Catalysed Bond Formation2.1 Pd/Cu-Catalysed C(sp
3)–C(sp
2) Bond Formation2.2 Pd/Cu-Catalysed C(sp
2)–C(sp
2) Bond Formation2.3 Pd/Cu-Catalysed C(sp)–C(sp
2) Bond Formation2.4 Pd/Cu-Catalysed C(sp
3)–C(sp
3) Bond Formation2.5 Pd/Cu-Catalysed C–X (X = B, N, P, S, Si) Bond Formation3 Conclusion
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17
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Wang L, Zheng X, Zheng Q, Li Z, Wu J, Gao G. Thioether-Assisted Cu-Catalyzed C5-H Arylation of Imidazo[1,5- a]pyridines. Org Lett 2022; 24:3834-3838. [PMID: 35609286 DOI: 10.1021/acs.orglett.2c01404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A Cu-catalyzed regioselective C5-H arylation of imidazo[1,5-a]pyridines with aryl iodides was achieved with the assistance of an ethylthio group at the C3 position. This directing group could be easily removed to furnish a range of 5-(hetero)arylimidazo[1,5-a]pyridine derivatives. The reaction tolerates a variety of functionalities and is compatible with sterically hindered substrates.
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Affiliation(s)
- Linhua Wang
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, Sichuan 610064, People's Republic of China
| | - Xuesong Zheng
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, Sichuan 610064, People's Republic of China
| | - Qinze Zheng
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, Sichuan 610064, People's Republic of China
| | - Zhenlong Li
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, Sichuan 610064, People's Republic of China
| | - Jian Wu
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, Sichuan 610064, People's Republic of China
| | - Ge Gao
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, Sichuan 610064, People's Republic of China
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18
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Elwahy AHM, Shaaban MR, Abdelhamid IA. Recent Advances in the Functionalization of Azulene Through Rh‐, Ir‐, Ru‐, Au‐, Fe‐, Ni‐, and Cu‐catalyzed Reactions. Appl Organomet Chem 2022. [DOI: 10.1002/aoc.6772] [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)
| | - Mohamed R. Shaaban
- Chemistry Department, Faculty of Applied Sciences, Makkah Almukkarramah, Umm AL‐Qura University Saudi Arabia
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19
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Nandi S, Mondal S, Jana R. Chemo- and regioselective benzylic C(sp3)–H oxidation bridging the gap between hetero- and homogeneous copper catalysis. iScience 2022; 25:104341. [PMID: 35602936 PMCID: PMC9118691 DOI: 10.1016/j.isci.2022.104341] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Revised: 04/09/2022] [Accepted: 04/26/2022] [Indexed: 11/25/2022] Open
Abstract
Selective C‒H functionalization in a pool of proximal C‒H bonds, predictably altering their innate reactivity is a daunting challenge. We disclose here, an expedient synthesis of privileged seven-membered lactones, dibenzo[c,e]oxepin-5(7H)-one through a highly chemoselective benzylic C(sp3)‒H activation. Remarkably, the formation of widely explored six-membered lactone via C(sp2)‒H activation is suppressed under the present conditions. The reaction proceeds smoothly on use of inexpensive metallic copper catalyst and di-tert-butyl peroxide (DTBP). Owing to the hazards of stoichiometric DTBP, further, we have developed a sustainable metallic copper/rose bengal dual catalytic system coupled with molecular oxygen replacing DTBP. A 1,5-aryl migration through Smiles rearrangement was realized from the corresponding diaryl ether substrates instead of expected eight-membered lactones. The present methodology is scalable, applied to the total synthesis of cytotoxic and neuroprotective natural product alterlactone. The catalyst is recyclable and the reaction can be performed in a copper bottle without any added catalyst. Catalytic strategy for chemo- and regioselective benzylic C–H activation Bulk copper catalysis merging with photocatalysis Reusable copper catalyst Reaction demonstrated in commercial copper bottle without external catalyst
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Affiliation(s)
- Shantanu Nandi
- Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, West Bengal, India
| | - Shuvam Mondal
- Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, West Bengal, India
| | - Ranjan Jana
- Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, West Bengal, India
- Corresponding author
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20
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Mandal R, Garai B, Sundararaju B. Weak-Coordination in C–H Bond Functionalizations Catalyzed by 3d Metals. ACS Catal 2022. [DOI: 10.1021/acscatal.1c05267] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Rajib Mandal
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh208016, India
| | - Bholanath Garai
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh208016, India
| | - Basker Sundararaju
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh208016, India
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21
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Ponce-de-León J, Marcos-Ayuso G, Casares JA, Espinet P. Pd/Cu bimetallic catalysis to access highly fluorinated biaryls from aryl halides and fluorinated arenes. Chem Commun (Camb) 2022; 58:3146-3149. [PMID: 35174831 DOI: 10.1039/d2cc00141a] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient Pd/Cu bimetallic cross-coupling catalysis of fluoroaryl halides and fluoroarenes is reported. In situ generation of the Cu nucleophile by rate determining C-H activation of highly fluorinated aryls (≥4 F atoms) leads to high cross-coupling selectivity with little formation of homocoupling products.
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Affiliation(s)
- Jaime Ponce-de-León
- IU CINQUIMA/Química Inorgánica, Facultad de Ciencias, Universidad de Valladolid, Valladolid-47071, Spain.
| | - Guillermo Marcos-Ayuso
- IU CINQUIMA/Química Inorgánica, Facultad de Ciencias, Universidad de Valladolid, Valladolid-47071, Spain.
| | - Juan A Casares
- IU CINQUIMA/Química Inorgánica, Facultad de Ciencias, Universidad de Valladolid, Valladolid-47071, Spain.
| | - Pablo Espinet
- IU CINQUIMA/Química Inorgánica, Facultad de Ciencias, Universidad de Valladolid, Valladolid-47071, Spain.
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22
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Fernandes R, Mhaske K, Balhara R, Jindal G, Narayan R. Copper-Catalyzed Aerobic Cross-Dehydrogenative Coupling of β-Oxime Ether Furan with Indole. Chem Asian J 2022; 17:e202101369. [PMID: 35146932 DOI: 10.1002/asia.202101369] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Revised: 01/30/2022] [Indexed: 11/09/2022]
Abstract
Heterobiaryls serve as relevant structural motifs in many fields of high applicative importance such as drugs, agrochemicals, organic functional materials etc. Cross-dehydrogenative coupling involving direct oxidation of two C-H bonds to construct a C-C bond is actively being pursued as a more benign and 'greener' alternative for synthesizing heterobiaryls. Herein, we report a Cu(I)-catalyzed cross-dehydrogenative coupling of indoles and furans, two of the most important aromatic heterocycles using air as the terminal oxidant. The reaction proceeds with regio- and chemoselectivity to give the cross-coupled products in good to excellent yields generally. A broad substrate scope with respect to both the coupling partners has been demonstrated to prove the generality of this reaction. This represents the hitherto unexplored cross-dehydrogenative coupling methodology to obtain an indole-furan biaryl motif.
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Affiliation(s)
- Rushil Fernandes
- School of Chemical and Materials Sciences (SCMS), Indian Institute of Technology (IIT) Goa GEC Campus, Farmagudi, Ponda, Goa-403401, India
| | - Krishna Mhaske
- School of Chemical and Materials Sciences (SCMS), Indian Institute of Technology (IIT) Goa GEC Campus, Farmagudi, Ponda, Goa-403401, India
| | - Reena Balhara
- Department of Organic Chemistry, Indian Institute of Science, Bangalore-560012, Karnataka, India
| | - Garima Jindal
- Department of Organic Chemistry, Indian Institute of Science, Bangalore-560012, Karnataka, India
| | - Rishikesh Narayan
- School of Chemical and Materials Sciences (SCMS), Indian Institute of Technology (IIT) Goa GEC Campus, Farmagudi, Ponda, Goa-403401, India
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23
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Loro C, Molteni L, Papis M, Beccalli EM, Nava D, Presti LL, Brenna S, Colombo G, Foschi F, Broggini G. Direct Synthesis of Fluorescent Oxazolo-phenoxazines by Copper-Catalyzed/Hypervalent Iodine(III)-Mediated Dimerization/Cyclization of 2-Benzylamino-phenols. J Org Chem 2022; 87:1032-1042. [PMID: 35014843 DOI: 10.1021/acs.joc.1c02329] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A dimerization/cyclization reaction of 2-benzylamino-phenols for the direct synthesis of the oxazolo-phenoxazine skeleton is reported. The reaction occurs under copper catalysis in the presence of hypervalent iodine(III), giving selectively the 5H-oxazolo[4,5-b]phenoxazine compounds. The cascade process, which allows the conversion of the substrates into the tetracyclic products, involves three C-H functionalization steps. Initial oxidation of electron-rich arenes by the hypervalent iodine is essential for the dimerization of substrates, whereas the formation of the five-membered rings is promoted by the copper species. 1-Benzyl-2-phenyl-6-(aryl-benzyl)amino-benzimidazoles are regioselectively obtained using N,N'-dibenzyl-phenylenediamines as starting substrates. The fluorescence emission properties of these classes of products have been evaluated.
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Affiliation(s)
- Camilla Loro
- Dipartimento di Scienza e Alta Tecnologia, Università dell'Insubria, via Valleggio 11, 22100 Como, Italy
| | - Letizia Molteni
- DISFARM, Sezione di Chimica Generale e Organica "A. Marchesini" Università degli Studi di Milano, via Venezian 21, 20133 Milano, Italy
| | - Marta Papis
- Dipartimento di Scienza e Alta Tecnologia, Università dell'Insubria, via Valleggio 11, 22100 Como, Italy
| | - Egle M Beccalli
- DISFARM, Sezione di Chimica Generale e Organica "A. Marchesini" Università degli Studi di Milano, via Venezian 21, 20133 Milano, Italy
| | - Donatella Nava
- DISFARM, Sezione di Chimica Generale e Organica "A. Marchesini" Università degli Studi di Milano, via Venezian 21, 20133 Milano, Italy
| | - Leonardo Lo Presti
- Dipartimento di Chimica, Università degli Studi di Milano, via Golgi 19, 20133 Milano, Italy
| | - Stefano Brenna
- Dipartimento di Scienza e Alta Tecnologia, Università dell'Insubria, via Valleggio 11, 22100 Como, Italy
| | - Gioele Colombo
- Dipartimento di Scienza e Alta Tecnologia, Università dell'Insubria, via Valleggio 11, 22100 Como, Italy
| | - Francesca Foschi
- Dipartimento di Scienza e Alta Tecnologia, Università dell'Insubria, via Valleggio 11, 22100 Como, Italy
| | - Gianluigi Broggini
- Dipartimento di Scienza e Alta Tecnologia, Università dell'Insubria, via Valleggio 11, 22100 Como, Italy
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24
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Rampon D, Seckler D, da Luz EQ, Paixão DB, Larroza AME, Schneider PH, Alves D. Transition metal catalysed direct sulfanylation of unreactive C-H bonds: an overview of the last two decades. Org Biomol Chem 2022; 20:6072-6177. [DOI: 10.1039/d2ob00986b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Transition metal catalysed direct sulfanylations of unreactive C-H bonds have become a unique and straightforward synthetic strategy in late-stage C-S bond formation of relevant complex molecules. Such transformations have represented...
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25
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Rajput S, Kaur R, Jain N. Pd and photoredox dual catalysis assisted decarboxylative ortho-benzoylation of N-phenyl-7-azaindoles. Org Biomol Chem 2022; 20:1453-1461. [DOI: 10.1039/d1ob02338a] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Directing group assisted decarboxylative ortho-benzoylation of N-aryl-7-azaindoles with α-keto acids has been achieved by synergistic visible light promoted photoredox and palladium catalysis. The approach tenders rapid entry to aryl ketone...
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26
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Zheng YN, Zheng H, Li T, Wei WT. Recent Advances in Copper-Catalyzed C-N Bond Formation Involving N-Centered Radicals. CHEMSUSCHEM 2021; 14:5340-5358. [PMID: 34750973 DOI: 10.1002/cssc.202102243] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 11/09/2021] [Indexed: 06/13/2023]
Abstract
C-N bonds are pervasive throughout organic-based materials, natural products, pharmaceutical compounds, and agricultural chemicals. Considering the widespread importance of C-N bonds, the development of greener and more convenient ways to form C-N bonds, especially in late-stage synthesis, has become one of the hottest research goals in synthetic chemistry. Copper-catalyzed radical reactions involving N-centered radicals have emerged as a sustainable and promising approach to build C-N bonds. As a chemically popular and diverse radical species, N-centered radicals have been used for all kinds of reactions for C-N bond formation by taking advantage of their inherently incredible reactive flexibility. Copper is also the most abundant and economic catalyst with the most relevant activity for facilitating the synthesis of valuable compounds. Therefore, the aim of the present Review was to illustrate recent and significant advances in C-N bond formation methods and to understand the unique advantages of copper catalysis in the generation of N-centered radicals since 2016. To provide an ease of understanding for the readers, this Review was organized based on the types of nitrogen sources (amines, amides, sulfonamides, oximes, hydrazones, azides, and tert-butyl nitrite).
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Affiliation(s)
- Yan-Nan Zheng
- Key Laboratory of Advanced Mass Spectrometry and Molecular Analysis of Zhejiang Province, School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang, 315211, P. R. China
| | - Hongxing Zheng
- Institution of Functional Organic Molecules and Materials, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, Shandong, 252059, P. R. China
- College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang, Henan, 473061, P. R. China
| | - Ting Li
- College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang, Henan, 473061, P. R. China
| | - Wen-Ting Wei
- Key Laboratory of Advanced Mass Spectrometry and Molecular Analysis of Zhejiang Province, School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang, 315211, P. R. China
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27
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Khandelia T, Ghosh S, Panigrahi P, Shome R, Ghosh SS, Patel BK. Copper(I)-Mediated Cascade Annulation via Dual C-H/C-H Activation: Access to Benzo[ a]carbazolic AEEgens. J Org Chem 2021; 86:16948-16964. [PMID: 34783566 DOI: 10.1021/acs.joc.1c02109] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
A Cu(I)-mediated cascade cyclization/annulation of unprotected o-alkynylanilines with maleimides in one pot is developed. The protocol offers sequential formation of one C-N and two C-C bonds to deliver fused benzo[a]carbazoles having free NH skeletons. The annulated products display fluorescence emission in the range of 485-502 nm with a large Stokes shift and fluorescence lifetime of ∼17 ns. The annulated 3aa displays AEE behavior in the ethanol/hexane system and possesses marigold-flower-like morphology at the aggregated state. Cell viability assays enumerate biocompatible AEEgens, while their high intracellular fluorescence depicts cell imaging applicability.
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Affiliation(s)
- Tamanna Khandelia
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwaha, Assam 781039, India
| | - Subhendu Ghosh
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwaha, Assam 781039, India
| | - Pritishree Panigrahi
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwaha, Assam 781039, India
| | - Rajib Shome
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwaha, Assam 781039, India
| | - Siddhartha Sankar Ghosh
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwaha, Assam 781039, India
| | - Bhisma K Patel
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwaha, Assam 781039, India
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28
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Strekalova S, Kononov A, Rizvanov I, Budnikova Y. Acetonitrile and benzonitrile as versatile amino sources in copper-catalyzed mild electrochemical C-H amidation reactions. RSC Adv 2021; 11:37540-37543. [PMID: 35496383 PMCID: PMC9043791 DOI: 10.1039/d1ra07650g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Accepted: 11/09/2021] [Indexed: 02/01/2023] Open
Abstract
A mild, efficient electrochemical approach to the site-selective direct C–H amidation of benzene and its derivatives with acetonitrile and benzonitrile has been developed. It has been shown that joint electrochemical oxidation of various arenes in the presence of a copper salt as a catalyst and nitriles leads to the formation of N-phenylacetamide from benzene and N-benzylacetamides from benzyl derivatives (up to 78% yield). A favorable feature of the process is mild conditions (room temperature, ambient pressure, no strong oxidants) that meet the criteria of green chemistry. Different pathways of C–H transformation depending on the substrate nature and oxidation potential.![]()
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Affiliation(s)
- Sofia Strekalova
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS Kazan 420088 Russian Federation
| | - Alexander Kononov
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS Kazan 420088 Russian Federation .,Kazan National Research Technological University Kazan 420015 Russian Federation
| | - Ildar Rizvanov
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS Kazan 420088 Russian Federation
| | - Yulia Budnikova
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS Kazan 420088 Russian Federation .,Kazan National Research Technological University Kazan 420015 Russian Federation
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29
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Khorsandi Z, Metkazini SFM, Heydari A, Varma RS. Visible light-driven direct synthesis of ketones from aldehydes via C H bond activation using NiCu nanoparticles adorned on carbon nano onions. MOLECULAR CATALYSIS 2021. [DOI: 10.1016/j.mcat.2021.111987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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30
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Gerz I, Jannuzzi SAV, Hylland KT, Negri C, Wragg DS, Øien‐Ødegaard S, Tilset M, Olsbye U, DeBeer S, Amedjkouh M. Structural Elucidation, Aggregation, and Dynamic Behaviour of
N,N,N,N
‐Copper(I) Schiff Base Complexes in Solid and in Solution: A Combined NMR, X‐ray Spectroscopic and Crystallographic Investigation. Eur J Inorg Chem 2021; 2021:4762-4775. [PMID: 35874966 PMCID: PMC9298233 DOI: 10.1002/ejic.202100722] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Revised: 09/22/2021] [Indexed: 12/30/2022]
Abstract
A series of Cu(I) complexes of bidentate or tetradentate Schiff base ligands bearing either 1‐H‐imidazole or pyridine moieties were synthesized. The complexes were studied by a combination of NMR and X‐ray spectroscopic techniques. The differences between the imidazole‐ and pyridine‐based ligands were examined by 1H, 13C and 15N NMR spectroscopy. The magnitude of the 15Nimine coordination shifts was found to be strongly affected by the nature of the heterocycle in the complexes. These trends showed good correlation with the obtained Cu−Nimine bond lengths from single‐crystal X‐ray diffraction measurements. Variable‐temperature NMR experiments, in combination with diffusion ordered spectroscopy (DOSY) revealed that one of the complexes underwent a temperature‐dependent interconversion between a monomer, a dimer and a higher aggregate. The complexes bearing tetradentate imidazole ligands were further studied using Cu K‐edge XAS and VtC XES, where DFT‐assisted assignment of spectral features suggested that these complexes may form polynuclear oligomers in solid state. Additionally, the Cu(II) analogue of one of the complexes was incorporated into a metal‐organic framework (MOF) as a way to obtain discrete, mononuclear complexes in the solid state.
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Affiliation(s)
- Isabelle Gerz
- Department of Chemistry University of Oslo P. O. Box 1033 Blindern 0315 Oslo Norway
- Centre for Materials Science and Nanotechnology University of Oslo P.O. Box 1126 Blindern 0316 Oslo Norway
| | | | - Knut T. Hylland
- Department of Chemistry University of Oslo P. O. Box 1033 Blindern 0315 Oslo Norway
- Centre for Materials Science and Nanotechnology University of Oslo P.O. Box 1126 Blindern 0316 Oslo Norway
| | - Chiara Negri
- Department of Chemistry University of Oslo P. O. Box 1033 Blindern 0315 Oslo Norway
- Centre for Materials Science and Nanotechnology University of Oslo P.O. Box 1126 Blindern 0316 Oslo Norway
| | - David S. Wragg
- Department of Chemistry University of Oslo P. O. Box 1033 Blindern 0315 Oslo Norway
- Centre for Materials Science and Nanotechnology University of Oslo P.O. Box 1126 Blindern 0316 Oslo Norway
| | - Sigurd Øien‐Ødegaard
- Department of Chemistry University of Oslo P. O. Box 1033 Blindern 0315 Oslo Norway
- Centre for Materials Science and Nanotechnology University of Oslo P.O. Box 1126 Blindern 0316 Oslo Norway
| | - Mats Tilset
- Department of Chemistry University of Oslo P. O. Box 1033 Blindern 0315 Oslo Norway
- Centre for Materials Science and Nanotechnology University of Oslo P.O. Box 1126 Blindern 0316 Oslo Norway
| | - Unni Olsbye
- Department of Chemistry University of Oslo P. O. Box 1033 Blindern 0315 Oslo Norway
- Centre for Materials Science and Nanotechnology University of Oslo P.O. Box 1126 Blindern 0316 Oslo Norway
| | - Serena DeBeer
- Department of Inorganic Spectroscopy Max Planck Institute for Chemical Energy Conversion Stiftstraße 34–36 45470 Mülheim an der Ruhr Germany
| | - Mohamed Amedjkouh
- Department of Chemistry University of Oslo P. O. Box 1033 Blindern 0315 Oslo Norway
- Centre for Materials Science and Nanotechnology University of Oslo P.O. Box 1126 Blindern 0316 Oslo Norway
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Yashwantrao G, Saha S. Sustainable strategies of C–N bond formation via Ullmann coupling employing earth abundant copper catalyst. Tetrahedron 2021. [DOI: 10.1016/j.tet.2021.132406] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Kumar S, Nunewar S, Oluguttula S, Nanduri S, Kanchupalli V. Recent advances in Rh(iii)/Ir(iii)-catalyzed C–H functionalization/annulation via carbene migratory insertion. Org Biomol Chem 2021; 19:1438-1458. [DOI: 10.1039/d0ob02309d] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The review highlighted diverse annulations, including nitrogen, oxygen, sulfur heterocycles and carbocylizations via Rh(iii)/Ir(iii)-catalyzed C–H functionalization/annulation with various arene and carbene precursors.
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Affiliation(s)
- Sanjeev Kumar
- Department of Process Chemistry
- National Institute of Pharmaceutical Education and Research (NIPER)
- Hyderabad 500 037
- India
| | - Saiprasad Nunewar
- Department of Process Chemistry
- National Institute of Pharmaceutical Education and Research (NIPER)
- Hyderabad 500 037
- India
| | - Srilekha Oluguttula
- Department of Process Chemistry
- National Institute of Pharmaceutical Education and Research (NIPER)
- Hyderabad 500 037
- India
| | - Srinivas Nanduri
- Department of Process Chemistry
- National Institute of Pharmaceutical Education and Research (NIPER)
- Hyderabad 500 037
- India
| | - Vinaykumar Kanchupalli
- Department of Process Chemistry
- National Institute of Pharmaceutical Education and Research (NIPER)
- Hyderabad 500 037
- India
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Qian J, Tian X, Wu Z, Yao J, Wang H, Zhou W. Efficient Oxidative Coupling of Isochroman with Primary Arylamines Catalyzed by Heterogeneous Ni-Containing Layered Double Oxide. CHINESE J ORG CHEM 2021. [DOI: 10.6023/cjoc202104021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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He YG, Huang YK, Fan QQ, Zheng B, Luo YQ, Zhu XL, Shi XX. Copper( ii)-catalyzed and acid-promoted highly regioselective oxidation of tautomerizable C(sp 3)–H bonds adjacent to 3,4-dihydroisoquinolines using air (O 2) as a clean oxidant. RSC Adv 2021; 11:29702-29710. [PMID: 35479555 PMCID: PMC9040818 DOI: 10.1039/d1ra05671a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2021] [Accepted: 08/30/2021] [Indexed: 12/15/2022] Open
Abstract
A novel Cu(ii)-catalyzed and acid-promoted highly regioselective oxidation of tautomerizable C(sp3)–H bonds adjacent to 1-Bn-DHIQs was developed. This method was successfully applied in the first total synthesis of canelillinoxine.
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Affiliation(s)
- Yun-Gang He
- Engineering Research Center of Pharmaceutical Process Chemistry of the Ministry of Education, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, People's Republic of China
| | - Yong-Kang Huang
- Engineering Research Center of Pharmaceutical Process Chemistry of the Ministry of Education, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, People's Republic of China
| | - Qi-Qi Fan
- Engineering Research Center of Pharmaceutical Process Chemistry of the Ministry of Education, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, People's Republic of China
| | - Bo Zheng
- Engineering Research Center of Pharmaceutical Process Chemistry of the Ministry of Education, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, People's Republic of China
| | - Yong-Qiang Luo
- Engineering Research Center of Pharmaceutical Process Chemistry of the Ministry of Education, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, People's Republic of China
| | - Xing-Liang Zhu
- Engineering Research Center of Pharmaceutical Process Chemistry of the Ministry of Education, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, People's Republic of China
| | - Xiao-Xin Shi
- Engineering Research Center of Pharmaceutical Process Chemistry of the Ministry of Education, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, People's Republic of China
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