1
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Montero Bastidas JR, Yadav A, Lee S, Ghaffari B, Smith MR, Maleczka RE. Balancing Reactivity, Regioselectivity, and Product Stability in Ir-Catalyzed Ortho-C-H Borylations of Anilines by Modulating the Diboron Partner. Org Lett 2024; 26:5420-5424. [PMID: 38920315 PMCID: PMC11232100 DOI: 10.1021/acs.orglett.4c01495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2024] [Revised: 06/17/2024] [Accepted: 06/19/2024] [Indexed: 06/27/2024]
Abstract
Ir-catalyzed arene C-H borylations (CHB) of anilines can be highly ortho selective by using a small B2eg2 (eg = ethane-1,2-diol) as the borylating reagent. Unfortunately, the products are prone to decomposition, and transesterification with pinacol is required prior to isolation. This work offers a solution by adjusting the size of the diboron reagent. Based on our evaluation, we conclude that B2bg2 (bg = butane-1,2-diol) achieves an optimal balance between CHB regioselectivity and stability for the borylated products.
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Affiliation(s)
| | | | - Seokjoo Lee
- Department of Chemistry, Michigan State University, 578 South Shaw Lane, East
Lansing, Michigan 48824, United States
| | - Behnaz Ghaffari
- Department of Chemistry, Michigan State University, 578 South Shaw Lane, East
Lansing, Michigan 48824, United States
| | - Milton R. Smith
- Department of Chemistry, Michigan State University, 578 South Shaw Lane, East
Lansing, Michigan 48824, United States
| | - Robert E. Maleczka
- Department of Chemistry, Michigan State University, 578 South Shaw Lane, East
Lansing, Michigan 48824, United States
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2
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Ashraf M, Ahmad MS, Inomata Y, Ullah N, Tahir MN, Kida T. Transition metal nanoparticles as nanocatalysts for Suzuki, Heck and Sonogashira cross-coupling reactions. Coord Chem Rev 2023. [DOI: 10.1016/j.ccr.2022.214928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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3
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Jiang L, Liu Y, Zheng K, Zhang Q, Yu Z, Xian M, Xu C. The novel boric acid modified material as micro separation plant for 1,3-BDO: Adsorption behavior and mechanism. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2022.122376] [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]
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4
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Huang D, An Q, Wang L, Li T, Liu M, Wu Y. Multi-active sites in situ formed on Schiff-base Pd(II)/Cu(II) self-assembly monolayer supported on graphene oxide: A simple protocol to enhance the catalytic activity. MOLECULAR CATALYSIS 2023. [DOI: 10.1016/j.mcat.2022.112846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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5
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Chen S, You B, Zhang T, Li M, Gu Y. Diversity-Oriented Metal-Free Synthesis of Nitrogen-Containing Heterocycles Using Atropaldehyde Acetals as a Dual C3/C2-Synthon. CHEMSUSCHEM 2022; 15:e202201301. [PMID: 35909080 DOI: 10.1002/cssc.202201301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2022] [Revised: 07/26/2022] [Indexed: 06/15/2023]
Abstract
A highly efficient and elegant diversity-oriented reaction paradigm employing atropaldehyde acetals as new dual C2/C3 synthons was developed under metal-free conditions using glycine esters as the counterpart reagents, which allowed rapid synthesis of two important nitrogen-containing heterocycles, pyrrolo[1,2-a]quinolines and 3,5-diarylpyridines. The divergent products are subtly controlled by the manipulation of the substitutional groups of glycine esters. When a N-arylglycine ester was used, pyrrolo[1,2-a]quinolines can be formed through cascade oxidative C-C cleavage/multiple cyclization. Instead, N-benzylglycine ester as the counter-reagent led to the synthesis of 3,5-diarylpyridines via two key C-N cleavages. Mild conditions, broad substrate scope, scalability and environmentally acceptable organic solvents rendered this method practical and attractive.
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Affiliation(s)
- Shaomin Chen
- Key Laboratory for Large-Format Battery Materials and System Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China
| | - Bo You
- Key Laboratory for Large-Format Battery Materials and System Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China
| | - Tianjian Zhang
- Key Laboratory for Large-Format Battery Materials and System Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China
| | - Minghao Li
- Key Laboratory for Large-Format Battery Materials and System Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China
| | - Yanlong Gu
- Key Laboratory for Large-Format Battery Materials and System Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi, 832004, P. R. China
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Lanzhou, 730000, P. R. China
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6
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Rajalakshmi C, Krishnan A, Saranya S, Anilkumar G, Thomas VI. A detailed theoretical investigation to unravel the molecular mechanism of the ligand-free copper-catalyzed Suzuki cross-coupling reaction. Org Biomol Chem 2022; 20:4539-4552. [PMID: 35388388 DOI: 10.1039/d2ob00371f] [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
The Suzuki-Miyaura coupling (SMC) represents a very efficacious method for constructing C-C bonds in organic synthesis. The ligand-free variants of SMC have been grabbing attention these days. Despite this momentousness, the mechanistic details of the ligand-free variants are scant in the literature. Herein, we have carried out a detailed mechanistic investigation into the ligand-free Cu-catalyzed SMC of unsaturated organic halides with aryl boronic acid with the aid of density functional theory (DFT) calculations employing the conductor-like polarizable continuum model (CPCM) method. The present study elucidates that in the absence of ancillary ligands on the metal, the substrates, base, and solvent molecules could act as pseudo-ancillary ligands to facilitate the cross-coupling reaction. The investigation further revealed that unsaturated halides like alkynyl halides/vinyl halides could act as good ancillary ligands for copper by forming a Cu-π intermediate and promoting a facile transmetalation process. However, regarding the oxidative addition and reductive elimination steps, a concerted pathway is observed contrary to Pd catalyzed Suzuki coupling, owing to the instability of Cu(III) species and the favourability of Csp2-Csp bond formation. In the whole set of mechanisms explored, oxidative addition/oxidative nucleophilic substitution was the rate-determining step in all the cases. A thermodynamically stable π-coordinated intermediate species where the substrate and base molecule are coordinated to the metal center is identified as the rate-determining species for the ligand-free Suzuki cross-coupling reaction. The presence of the aforesaid intermediate increases the energy span and consequently the activation barrier for the rate-determining step. This study unveiled a theoretical rationale for the high-temperature requirement in the ligand-free Cu-catalyzed SMC reaction.
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Affiliation(s)
- C Rajalakshmi
- Department of Chemistry, CMS College Kottayam (Autonomous), Kottayam, Kerala, 686001, India.
| | - Anandhu Krishnan
- Department of Chemistry, CMS College Kottayam (Autonomous), Kottayam, Kerala, 686001, India.
| | - Salim Saranya
- School of Chemical Sciences, Mahatma Gandhi University, Priyadarsini Hills P.O, Kottayam, Kerala, 686560, India.
| | - Gopinathan Anilkumar
- School of Chemical Sciences, Mahatma Gandhi University, Priyadarsini Hills P.O, Kottayam, Kerala, 686560, India. .,Institute for Integrated Programmes and Research in Basic Sciences, Mahatma Gandhi University, Priyadarsini Hills P.O, Kottayam, Kerala, India 686560
| | - Vibin Ipe Thomas
- Department of Chemistry, CMS College Kottayam (Autonomous), Kottayam, Kerala, 686001, India. .,Institute for Integrated Programmes and Research in Basic Sciences, Mahatma Gandhi University, Priyadarsini Hills P.O, Kottayam, Kerala, India 686560
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7
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Lakshmidevi J, Naidu BR, Venkateswarlu K. CuI in biorenewable basic medium: Three novel and low E-factor Suzuki-Miyaura cross-coupling reactions. MOLECULAR CATALYSIS 2022. [DOI: 10.1016/j.mcat.2022.112237] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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8
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Concise Syntheses of Marine (Bis)indole Alkaloids Meridianin C, D, F, and G and Scalaridine A via One-Pot Masuda Borylation-Suzuki Coupling Sequence. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27072233. [PMID: 35408633 PMCID: PMC9000334 DOI: 10.3390/molecules27072233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 03/18/2022] [Accepted: 03/25/2022] [Indexed: 11/16/2022]
Abstract
N-Protected 3-iodoindoles were reacted with (di)azine halides in a sequentially Pd-catalyzed one-pot fashion, i.e., by Masuda borylation–Suzuki coupling (MBSC) sequence. This methodology was successfully applied to the concise syntheses of marine indole alkaloids meridianin C, D, F, and G, as well as to the bisindole alkaloid scalaridine A, which were obtained in moderate to excellent yield.
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9
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Li J, Li J, He R, Liu J, Liu Y, Chen L, Huang Y, Li Y. Selective Synthesis of Substituted Pyridines and Pyrimidines through Cascade Annulation of Isopropene Derivatives. Org Lett 2022; 24:1620-1625. [PMID: 35194989 DOI: 10.1021/acs.orglett.2c00124] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Diverse substituted pyridines and pyrimidines with high selectivity were obtained using a concise and efficient protocol developed herein. The reaction proceeds via metal-free cascade annulation of isopropene derivatives. Using isopropene derivatives as C3 synthons, NH4I as the "N" source, and formaldehyde or dimethyl sulfoxide as the carbon source, this reaction realizes the efficient formation of intermolecular C-N and C-C bonds.
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Affiliation(s)
- Jian Li
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong Province 529090, China
| | - Jiaming Li
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong Province 529090, China
| | - Runfa He
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong Province 529090, China
| | - Jiasheng Liu
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong Province 529090, China
| | - Yang Liu
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong Province 529090, China
| | - Lu Chen
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong Province 529090, China
| | - Yubing Huang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong Province 529090, China
| | - Yibiao Li
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong Province 529090, China
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10
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Koolivand M, Nikoorazm M, Ghorbani‐Choghamarani A, Tahmasbi B. Cu–citric acid metal–organic framework: Synthesis, characterization and catalytic application in Suzuki–Miyaura cross‐coupling reaction and oxidation of sulfides. Appl Organomet Chem 2021. [DOI: 10.1002/aoc.6434] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Mostafa Koolivand
- Department of Chemistry, Faculty of Science Ilam University Ilam Iran
| | - Mohsen Nikoorazm
- Department of Chemistry, Faculty of Science Ilam University Ilam Iran
| | | | - Bahman Tahmasbi
- Department of Chemistry, Faculty of Science Ilam University Ilam Iran
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11
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Camats M, Pla D, Gómez M. Copper nanocatalysts applied in coupling reactions: a mechanistic insight. NANOSCALE 2021; 13:18817-18838. [PMID: 34757356 DOI: 10.1039/d1nr05894k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Copper-based nanocatalysts have seen great interest for use in synthetic applications since the early 20th century, as evidenced by the exponential number of contributions reported (since 2000, more than 48 000 works published out of about 81 300 since 1900; results from SciFinder using "copper nanocatalysts in organic synthesis" as keywords). These huge efforts are mainly based on two key aspects: (i) copper is an Earth-abundant metal with low toxicity, leading to inexpensive and eco-friendly catalytic materials; and (ii) copper can stabilize different oxidation states (0 to +3) for molecular and nanoparticle-based systems, which promotes different types of metal-reagent interactions. This chemical versatility allows different pathways, involving radical or ionic copper-based intermediates. Thus, copper-based nanoparticles have become convenient catalysts, in particular for couplings (both homo- and hetero-couplings), transformations that are involved in a remarkable number of processes affording organic compounds, which find interest in different fields (medicinal chemistry, natural products, drugs, materials, etc.). Clearly, this richness in reactivity makes understanding the mechanisms more complex. The present review focuses on the analysis of reported contributions using monometallic copper-based nanoparticles as catalytic precursors applied in coupling reactions, paying attention to those shedding light on the reaction mechanism.
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Affiliation(s)
- Marc Camats
- Laboratoire Hétérochimie Fondamentale et Appliquée, UMR CNRS 5069, Université Toulouse 3 - Paul Sabatier, 118 route de Narbonne, 31062 Toulouse cedex 9, France.
| | - Daniel Pla
- Laboratoire Hétérochimie Fondamentale et Appliquée, UMR CNRS 5069, Université Toulouse 3 - Paul Sabatier, 118 route de Narbonne, 31062 Toulouse cedex 9, France.
| | - Montserrat Gómez
- Laboratoire Hétérochimie Fondamentale et Appliquée, UMR CNRS 5069, Université Toulouse 3 - Paul Sabatier, 118 route de Narbonne, 31062 Toulouse cedex 9, France.
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12
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Base-Promoted One-Pot Synthesis of Pyridine Derivatives via Aromatic Alkyne Annulation Using Benzamides as Nitrogen Source. Molecules 2021; 26:molecules26216599. [PMID: 34771009 PMCID: PMC8587654 DOI: 10.3390/molecules26216599] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 10/22/2021] [Accepted: 10/27/2021] [Indexed: 11/17/2022] Open
Abstract
In the presence of Cs2CO3, the first simple, efficient, and one-pot procedure for the synthesis of 3,5-diaryl pyridines via a variety of aromatic terminal alkynes with benzamides as the nitrogen source in sulfolane is described. The formation of pyridine derivatives accompanies the outcome of 1,3-diaryl propenes, which are also useful intermediates in organic synthesis. Thus, pyridine ring results from a formal [2+2+1+1] cyclocondensation of three alkynes with benzamides, and one of the alkynes provides one carbon, whilst benzamides provide a nitrogen source only. A new transformation of alkynes as well as new utility of benzamide are found in this work.
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13
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Su MD, Liu HP, Cao ZZ, Liu Y, Li H, Nie ZW, Yang TL, Luo WP, Liu Q, Guo CC. Two C═C Bond Participation in Annulation to Pyridines Based on DMF as the Nonadjacent N and C Atom Donors. J Org Chem 2021; 86:13446-13453. [PMID: 34546730 DOI: 10.1021/acs.joc.1c01550] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Two C═C bond participation in annulation to pyridines using N,N-dimethylformamide (DMF) as the N1 and C4 synthons has been carried out. In this reaction, DMF contributed one N atom and one C atom to two disconnected positions of pyridine ring, with no need for an additional nitrogen source. Two C═C bonds in two molecules of substituted styrenes offered four carbon atoms in the presence of iodine and persulfate. With the optimized conditions in hand, both symmetric and unsymmetric diaryl-substituted pyridines were obtained in useful yields. On the basis of relevant literature and a series of control experimental results, a possible mechanism was proposed in this work, which may demonstrate how DMF provides both N1 and C4 sources.
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Affiliation(s)
- Miao-Dong Su
- College of Chemistry and Chemical Engineering, Advanced Catalytic Engineering Research Center of the Ministry of Education, Hunan University, Changsha 410082, China
| | - Hai-Ping Liu
- College of Chemistry and Chemical Engineering, Advanced Catalytic Engineering Research Center of the Ministry of Education, Hunan University, Changsha 410082, China
| | - Zhong-Zhong Cao
- College of Chemistry and Chemical Engineering, Advanced Catalytic Engineering Research Center of the Ministry of Education, Hunan University, Changsha 410082, China
| | - Yufeng Liu
- College of Chemistry and Chemical Engineering, Advanced Catalytic Engineering Research Center of the Ministry of Education, Hunan University, Changsha 410082, China
| | - Hui Li
- College of Chemistry and Chemical Engineering, Advanced Catalytic Engineering Research Center of the Ministry of Education, Hunan University, Changsha 410082, China
| | - Zhi-Wen Nie
- College of Chemistry and Chemical Engineering, Advanced Catalytic Engineering Research Center of the Ministry of Education, Hunan University, Changsha 410082, China
| | - Tong-Lin Yang
- College of Chemistry and Chemical Engineering, Advanced Catalytic Engineering Research Center of the Ministry of Education, Hunan University, Changsha 410082, China
| | - Wei-Ping Luo
- College of Chemistry and Chemical Engineering, Advanced Catalytic Engineering Research Center of the Ministry of Education, Hunan University, Changsha 410082, China
| | - Qiang Liu
- College of Chemistry and Chemical Engineering, Advanced Catalytic Engineering Research Center of the Ministry of Education, Hunan University, Changsha 410082, China
| | - Can-Cheng Guo
- College of Chemistry and Chemical Engineering, Advanced Catalytic Engineering Research Center of the Ministry of Education, Hunan University, Changsha 410082, China
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14
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Ramakrishna D. Ionic liquid immobilized Cu(I)–hydrazone–triphenylphosphine complex: an easily recyclable catalytic system for Suzuki and Heck cross couplings. CAN J CHEM 2021. [DOI: 10.1139/cjc-2020-0403] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A highly efficient, reusable, catalytic system of Heck and Suzuki cross-coupling reactions was observed for an inexpensive copper complex dispersed in ethyl-methyl imidazolium hexafluorophosphate medium, [EMIM]PF6. The reaction conditions were optimized by studying the effects of temperature, catalyst concentration, solvent, and time. This method functions for a variety of substrates towards the cross-coupling reactions. Most notably, the catalyst – ionic liquid mixture was easily recoverable and reused six times without much loss in the catalytic activity, causing a notably very low impact on the environment.
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Affiliation(s)
- Dileep Ramakrishna
- Department of Chemistry, Presidency University, Yelahanka, Bengaluru 560064, India
- Department of Chemistry, Presidency University, Yelahanka, Bengaluru 560064, India
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15
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Sonei S, Taghavi F, Khojastehnezhad A, Gholizadeh M. Copper‐Functionalized Silica‐Coated Magnetic Nanoparticles for an Efficient Suzuki Cross‐Coupling Reaction. ChemistrySelect 2021. [DOI: 10.1002/slct.202004148] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Samin Sonei
- Department of Chemistry, Faculty of Science Ferdowsi University of Mashhad Mashhad Iran
| | - Faezeh Taghavi
- Department of Chemistry, Faculty of Science Ferdowsi University of Mashhad Mashhad Iran
| | - Amir Khojastehnezhad
- Department of Chemistry, Faculty of Science Ferdowsi University of Mashhad Mashhad Iran
| | - Mostafa Gholizadeh
- Department of Chemistry, Faculty of Science Ferdowsi University of Mashhad Mashhad Iran
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16
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Husain A, Rani P, Nar KK, Singh AP, Kumar R, Bhasin KK, Kumar G. A tryptophan-based copper(ii) coordination polymer: catalytic activity towards Suzuki–Miyaura cross-coupling reactions. CrystEngComm 2021. [DOI: 10.1039/d1ce01282g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
An unusual tryptophan coordination mode with copper(ii) wherein l-tryp is coordinated through the carboxylate and amine groups. A heterogeneous catalyst for the Suzuki cross-coupling reaction with ∼98% yield under normal reaction conditions.
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Affiliation(s)
- Ahmad Husain
- Department of Chemistry, DAV University, Jalandhar-144012, Punjab, India
| | - Pooja Rani
- Department of Chemistry & Centre for Advanced Studies in Chemistry, Panjab University Chandigarh, Chandigarh, India
| | - Kuldeep Kaur Nar
- Department of Chemistry, DAV University, Jalandhar-144012, Punjab, India
| | - Amit Pratap Singh
- Department of Applied Sciences, National Institute of Technology, New Delhi-110040, India
| | - Rakesh Kumar
- Department of Chemistry, MCM DAV College, Kangra-176001, Himachal Pradesh, India
| | - K. K. Bhasin
- Department of Chemistry & Centre for Advanced Studies in Chemistry, Panjab University Chandigarh, Chandigarh, India
| | - Girijesh Kumar
- Department of Chemistry & Centre for Advanced Studies in Chemistry, Panjab University Chandigarh, Chandigarh, India
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17
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Chang MY, Tsai YL. One-Pot Amberlyst 15-Controlled Cyclocondensation of Piperidines and Arylaldehydes: Synthesis of 3,5-Diarylmethylpyridines. J Org Chem 2020; 85:5651-5659. [PMID: 32208623 DOI: 10.1021/acs.joc.9b03315] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Amberlyst 15-controlled one-pot easy-operational intermolecular cyclocondensation of substituted piperidines with arylaldehydes provides diversified 3,5-diarylmethylpyridines in high to excellent yields under refluxing toluene conditions. The uses of various acidic solid supports and reaction solvents are investigated for facile and efficient transformation. A plausible mechanism has been proposed.
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Affiliation(s)
- Meng-Yang Chang
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 807, Taiwan.,Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan
| | - Yu-Lin Tsai
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 807, Taiwan
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18
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Sakurai S, Tsuzuki S, Sakamoto R, Maruoka K. Cu-Catalyzed Generation of Alkyl Radicals from Alkylsilyl Peroxides and Subsequent C(sp 3)-C(sp 2) Cross-Coupling with Arylboronic Acids. J Org Chem 2020; 85:3973-3980. [PMID: 31939666 DOI: 10.1021/acs.joc.9b03294] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
This work describes a novel and practical method for the Cu-catalyzed C(sp3)-C(sp2) cross-coupling of alkylsilyl peroxides with arylboronic acids. The reductive cleavage of the O-O bond of alkylsilyl peroxides and the desired cross-coupling reactions to afford alkyl-substituted aromatic rings proceed smoothly at room temperature promoted by simple Cu-based catalysts and do not require activation by visible light. The results of mechanistic investigations support a radical-mediated C(sp3)-C(sp2) bond formation via β-scission of the alkoxy radicals generated from the alkylsilyl peroxides.
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Affiliation(s)
- Shunya Sakurai
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo, Kyoto 606-8502, Japan
| | - Saori Tsuzuki
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo, Kyoto 606-8502, Japan
| | - Ryu Sakamoto
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo, Kyoto 606-8502, Japan
| | - Keiji Maruoka
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo, Kyoto 606-8502, Japan.,Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo, Kyoto 606-8501, Japan.,School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China
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19
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Xiao X, Luo J, Gan Z, Jiang W, Tang Q. Metal-free and solvent-free synthesis of m-terphenyls through tandem cyclocondensation of aryl methyl ketones with triethyl orthoformate. RSC Adv 2020; 10:12113-12118. [PMID: 35496630 PMCID: PMC9050746 DOI: 10.1039/d0ra00578a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2020] [Accepted: 03/18/2020] [Indexed: 11/21/2022] Open
Abstract
Reported here is a novel cyclocondensation of aryl methyl ketones and triethyl orthoformate for the simple synthesis of m-terphenyls. In the presence of a catalytic amount of TfOH, alkyl- and chloro-substituted acetophenones produced a series of terphenyls through a tandem reaction which merged six steps into a one-pot procedure. Moreover, the corresponding ester products were obtained when using other substituted acetophenones as the starting materials under the same reaction conditions. A facile metal-free and solvent-free benzannulation was developed for the construction of m-terphenyl derivatives starting from aryl methyl ketones and triethyl orthoformate. This is a tandem reaction which merged six steps into one-pot procedure.![]()
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Affiliation(s)
- Xiaoqin Xiao
- College of Pharmacy
- Center for Lab Teaching and Management
- Chongqing Research Center for Pharmaceutical Engineering
- Chongqing Medical University
- Chongqing 400016
| | - Juan Luo
- College of Pharmacy
- Center for Lab Teaching and Management
- Chongqing Research Center for Pharmaceutical Engineering
- Chongqing Medical University
- Chongqing 400016
| | - Zongjie Gan
- College of Pharmacy
- Center for Lab Teaching and Management
- Chongqing Research Center for Pharmaceutical Engineering
- Chongqing Medical University
- Chongqing 400016
| | - Wengao Jiang
- College of Pharmacy
- Center for Lab Teaching and Management
- Chongqing Research Center for Pharmaceutical Engineering
- Chongqing Medical University
- Chongqing 400016
| | - Qiang Tang
- College of Pharmacy
- Center for Lab Teaching and Management
- Chongqing Research Center for Pharmaceutical Engineering
- Chongqing Medical University
- Chongqing 400016
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20
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Singh H, Tiwari R, Sharma P, Kumar P, Jain N. Zinc triflate catalyzed 1,3-indolylation of cyclohexanones: tandem condensation, dehydrogenation and aromatization sequence. Org Biomol Chem 2020; 18:2492-2500. [DOI: 10.1039/d0ob00163e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
1,3-Bis(1-alkyl-1H-indol-3-yl)benzene derivatives have been synthesized through a Zn(OTf)2 catalyzed reaction between cyclohexanones and indoles.
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Affiliation(s)
- Himanshu Singh
- Department of Chemistry
- Indian Institute of Technology
- New Delhi-110016
- India
| | - Rajat Tiwari
- Department of Chemistry
- Indian Institute of Technology
- New Delhi-110016
- India
| | - Poonam Sharma
- Department of Chemistry
- Indian Institute of Technology
- New Delhi-110016
- India
| | - Pramod Kumar
- Department of Chemistry
- Indian Institute of Technology
- New Delhi-110016
- India
| | - Nidhi Jain
- Department of Chemistry
- Indian Institute of Technology
- New Delhi-110016
- India
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21
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Cui Z, Hao J, Chen X, Duan H, Xue Y, Zhang R. Size- and Morphology-Dependent Kinetics and Thermodynamics of Adsorptions of Basic Fuchsin on Nano-TiO 2. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b04666] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Zixiang Cui
- Department of Chemistry, Taiyuan University of Technology, 030024 Taiyuan, Shanxi, P. R. China
| | - Jie Hao
- Department of Chemistry, Taiyuan University of Technology, 030024 Taiyuan, Shanxi, P. R. China
| | - Xinghui Chen
- Department of Chemistry, Taiyuan University of Technology, 030024 Taiyuan, Shanxi, P. R. China
| | - Huijuan Duan
- Department of Chemistry, Taiyuan University of Technology, 030024 Taiyuan, Shanxi, P. R. China
| | - Yongqiang Xue
- Department of Chemistry, Taiyuan University of Technology, 030024 Taiyuan, Shanxi, P. R. China
| | - Rong Zhang
- Department of Chemistry, Taiyuan University of Technology, 030024 Taiyuan, Shanxi, P. R. China
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22
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Akbarzadeh P, Koukabi N, Kolvari E. Polythiophene-functionalized magnetic carbon nanotube-supported copper(I) complex: a novel and retrievable heterogeneous catalyst for the "Phosphine- and Palladium-Free" Suzuki-Miyaura cross-coupling reaction. Mol Divers 2019; 24:1125-1137. [PMID: 31758294 DOI: 10.1007/s11030-019-10016-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2019] [Accepted: 11/07/2019] [Indexed: 01/06/2023]
Abstract
A simple preparation of catalysts with high catalytic activity and superior cycling stability is very desirable. In this contribution, magnetic carbon nanotube functionalized by polythiophene (CNT-Fe3O4-PTh) acts as an efficient and retrievable host for copper nanoparticles to prepare CNT-Fe3O4-PTh-Cu(I) as a nontoxic and inexpensive catalyst. FT-IR, TGA, EDX, VSM, XRD, FE-SEM, TEM, and AAS techniques were employed to characterize the structure of the synthesized magnetic heterogeneous nanocomposite. Thereafter, the catalytic application of the catalyst was evaluated for the phosphine- and palladium-free Suzuki-Miyaura cross-coupling reaction in water/ethanol as a green media in short reaction times with good to excellent yields. Various derivatives of biaryl compounds were synthesized by reaction of aryl halides and phenylboronic acid. Simple methodology and easy workup, short reaction times, elimination of volatile and toxic solvents, biocompatible reaction conditions, and high yields are some advantages of this protocol. Moreover, the catalyst showed a good reusability owing to its magnetic properties and was recycled several times without appreciable decrease in its catalytic efficiency. Copper(I) nanoparticles supported on magnetic carbon nanotube functionalized by polythiophene (CNT-Fe3O4-PTh-Cu(I)), was prepared and used for ligand- and palladiumfree Suzuki-Miyaura cross-coupling reaction in water/ethanol as a green media in short reaction times with good to excellent yields. Reusability and stability tests demonstrated that the as prepared catalyst can be recycled with a negligible loss of its activity.
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Affiliation(s)
- Parisa Akbarzadeh
- Department of Chemistry, Semnan University, Semnan, 35131-19111, Iran
| | - Nadiya Koukabi
- Department of Chemistry, Semnan University, Semnan, 35131-19111, Iran.
| | - Eskandar Kolvari
- Department of Chemistry, Semnan University, Semnan, 35131-19111, Iran
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23
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Ranjani G, Nagarajan R. Metal-Free C–H Functionalization and Aromatization Sequence for the Synthesis of 1-(Indol-3-yl)carbazoles and Total Synthesis of 7-Bromo-1-(6-bromo-1H-indol-3-yl)-9H-carbazole. Org Lett 2019; 21:675-678. [DOI: 10.1021/acs.orglett.8b03848] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Ganapathy Ranjani
- School of Chemistry, University of Hyderabad, Hyderabad 500046, India
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24
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Baldwin AF, North R, Eisenbeis S. Trace Level Quantification of Derivatized Boronic Acids by LC/MS/MS. Org Process Res Dev 2019. [DOI: 10.1021/acs.oprd.8b00377] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Aaron F. Baldwin
- Pharmaceutical Sciences Small Molecule †Analytical Research & Development and ‡Chemical Research & Development, Pfizer, Eastern Point Road, Groton, Connecticut 06340, United States
| | - Robert North
- Pharmaceutical Sciences Small Molecule †Analytical Research & Development and ‡Chemical Research & Development, Pfizer, Eastern Point Road, Groton, Connecticut 06340, United States
| | - Shane Eisenbeis
- Pharmaceutical Sciences Small Molecule †Analytical Research & Development and ‡Chemical Research & Development, Pfizer, Eastern Point Road, Groton, Connecticut 06340, United States
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25
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Czompa A, Pásztor BL, Sahar JA, Mucsi Z, Bogdán D, Ludányi K, Varga Z, Mándity IM. Scope and limitation of propylene carbonate as a sustainable solvent in the Suzuki–Miyaura reaction. RSC Adv 2019; 9:37818-37824. [PMID: 35541805 PMCID: PMC9075783 DOI: 10.1039/c9ra07044c] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Accepted: 10/29/2019] [Indexed: 01/08/2023] Open
Abstract
The Suzuki–Miyaura reaction is one of the most used transformations in drug research. Thus making this reaction more sustainable is of considerable current interest. Here we show that propylene carbonate (PC) can be used as a solvent for the Suzuki–Miyaura reaction. PC is one of the greenest solvents since it is synthesized under green conditions by the use of carbon dioxide in the air. All reactions proceeded well and good or excellent yields were observed for the biaryl products. Nonetheless in the case of pyridazinones, 2-hydroxypropyl- chain containing side-products were observed. Importantly, this fact allowed the isolation of several novel compounds which were generated under prominently green conditions. The Suzuki–Miyaura reaction was carried out in propylene carbonate yielding an interesting side-product besides the biphenyl derivative.![]()
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Affiliation(s)
- Andrea Czompa
- Department of Organic Chemistry
- Faculty of Pharmacy
- Semmelweis University
- H-1092 Budapest
- Hungary
| | - Balázs László Pásztor
- Department of Organic Chemistry
- Faculty of Pharmacy
- Semmelweis University
- H-1092 Budapest
- Hungary
| | - Jennifer Alizadeh Sahar
- Department of Organic Chemistry
- Faculty of Pharmacy
- Semmelweis University
- H-1092 Budapest
- Hungary
| | | | - Dóra Bogdán
- Department of Organic Chemistry
- Faculty of Pharmacy
- Semmelweis University
- H-1092 Budapest
- Hungary
| | - Krisztina Ludányi
- Department of Pharmaceutics
- Semmelweis University
- H-1092 Budapest
- Hungary
| | - Zoltán Varga
- Institute of Materials and Environmental Chemistry
- Research Center for Natural Sciences
- Hungarian Academy of Sciences
- H-1117 Budapest
- Hungary
| | - István M. Mándity
- Department of Organic Chemistry
- Faculty of Pharmacy
- Semmelweis University
- H-1092 Budapest
- Hungary
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26
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Zeynizadeh B, Younesi R, Mousavi H. Ni2B@Cu2O and Ni2B@CuCl2: two new simple and efficient nanocatalysts for the green one-pot reductive acetylation of nitroarenes and direct N-acetylation of arylamines using solvent-free mechanochemical grinding. RESEARCH ON CHEMICAL INTERMEDIATES 2018. [DOI: 10.1007/s11164-018-3559-x] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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27
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Bergmann AM, Oldham AM, You W, Brown MK. Copper-catalyzed cross-coupling of aryl-, primary alkyl-, and secondary alkylboranes with heteroaryl bromides. Chem Commun (Camb) 2018; 54:5381-5384. [PMID: 29745398 DOI: 10.1039/c8cc03145b] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A method for the Cu-catalyzed cross-coupling of both aryl and alkylboranes with aryl bromides is described. The method employs an inexpensive Cu-catalyst and functions for a variety of heterocyclic as well as electron deficient aryl bromides. In addition, aryl iodides of varying substitution patterns and electronic properties work well.
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Affiliation(s)
- Allison M Bergmann
- Indiana University, Department of Chemistry, 800 E. Kirkwood Ave., Bloomington, IN 47401, USA.
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28
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Guo P, Zhang H, Zhou J, Gallou F, Parmentier M, Wang H. Micelle-Enabled Suzuki–Miyaura Cross-Coupling of Heteroaryl Boronate Esters. J Org Chem 2018; 83:7523-7527. [DOI: 10.1021/acs.joc.8b00257] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Pengfei Guo
- Chemical & Analytical Development, Suzhou Novartis Pharma Technology Company Limited, Changshu, Jiangsu 215537, China
| | - Hao Zhang
- Chemical & Analytical Development, Suzhou Novartis Pharma Technology Company Limited, Changshu, Jiangsu 215537, China
| | - Jianguang Zhou
- Chemical & Analytical Development, Suzhou Novartis Pharma Technology Company Limited, Changshu, Jiangsu 215537, China
| | - Fabrice Gallou
- Chemical & Analytical Development, Novartis Pharma AG, 4056 Basel, Switzerland
| | - Michael Parmentier
- Chemical & Analytical Development, Novartis Pharma AG, 4056 Basel, Switzerland
| | - Hui Wang
- Chemical & Analytical Development, Suzhou Novartis Pharma Technology Company Limited, Changshu, Jiangsu 215537, China
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29
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Banik A, Paira R, Shaw BK, Vijaykumar G, Mandal SK. Accessing Heterobiaryls through Transition-Metal-Free C-H Functionalization. J Org Chem 2018; 83:3236-3244. [PMID: 29436824 DOI: 10.1021/acs.joc.8b00140] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Herein we report a transition-metal-free synthetic protocol for heterobiaryls, one of the most important pharmacophores in the modern drug industry, employing a new multidonor phenalenyl (PLY)-based ligand. The current procedure offers a wide substrate scope (24 examples) with a low catalyst loading resulting in an excellent product yield (up to 95%). The reaction mechanism involves a single electron transfer (SET) from a phenalenyl-based radical to generate a reactive heteroaryl radical. To establish the mechanism, we have isolated the catalytically active SET initiator, characterizing by a magnetic study.
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Affiliation(s)
- Ananya Banik
- Department of Chemical Sciences , Indian Institute of Science Education and Research , Kolkata , Mohanpur 741246 , India
| | - Rupankar Paira
- Department of Chemistry , Maharaja Manindra Chandra College , 20 Ramkanto Bose Street , Kolkata 700003 , India
| | - Bikash Kumar Shaw
- Department of Chemical Sciences , Indian Institute of Science Education and Research , Kolkata , Mohanpur 741246 , India
| | - Gonela Vijaykumar
- Department of Chemical Sciences , Indian Institute of Science Education and Research , Kolkata , Mohanpur 741246 , India
| | - Swadhin K Mandal
- Department of Chemical Sciences , Indian Institute of Science Education and Research , Kolkata , Mohanpur 741246 , India
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30
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Zhang S, Han Y, He J, Zhang Y. B(C 6F 5) 3-Catalyzed C3-Selective C-H Borylation of Indoles: Synthesis, Intermediates, and Reaction Mechanism. J Org Chem 2018; 83:1377-1386. [PMID: 29284261 DOI: 10.1021/acs.joc.7b02886] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Without the addition of any additives and production of any small molecules, C3-borylated indoles and transfer hydrogenated indolines have been simultaneously achieved by a B(C6F5)3-catalyzed disproportionation reaction of a broad range of indoles with catecholborane. This catalyst system exhibits excellent catalytic performance for practical applications, such as easy scale-up under solvent-free conditions and long catalytic lifetime over ten sequential additions of starting materials. A combined mechanistic study, including isolation and characterization of key reaction intermediates, analysis of the disproportionation nature of the reaction, in situ NMR of the reaction, and analysis of detailed experimental data, has led to a possible reaction mechanism which illustrates pathways for the formation of both major products and byproducts. Understanding the reaction mechanism enables us to successfully suppress side reactions by choosing appropriate substrates and adjusting the amount of catecholborane needed. More importantly, with an elevated reaction temperature, we could achieve the convergent disproportionation reaction of indoles, in which indolines were continuously oxidized to indoles for the next disproportionation catalytic cycle. Near quantitative conversions and up to 98% yields of various C3-selective borylated indoles were achieved, without any additives or H2 acceptors.
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Affiliation(s)
- Sutao Zhang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University , Changchun, Jilin 130012, China
| | - Yuxi Han
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University , Changchun, Jilin 130012, China
| | - Jianghua He
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University , Changchun, Jilin 130012, China
| | - Yuetao Zhang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University , Changchun, Jilin 130012, China
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31
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Mousavi H, Zeynizadeh B, Younesi R, Esmati M. Simple and Practical Synthesis of Various New Nickel Boride-Based Nanocomposites and their Applications for the Green and Expeditious Reduction of Nitroarenes to Arylamines under Wet-Solvent-Free Mechanochemical Grinding. Aust J Chem 2018. [DOI: 10.1071/ch18200] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
In this paper, we report a simple synthesis of four new nickel boride-based nanocomposites, namely Ni2B@ZrCl4, Ni2B@Cu2O, Ni2B@CuCl2 and Ni2B@FeCl3, from commercially available and cheap starting materials. All of the new Ni2B-based nanocomposites were well characterized by Fourier-transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy, and energy-dispersive X-ray spectroscopy. Further, the catalytic applications of these new nanocomposites were successfully evaluated in the wet-solvent-free reduction of aromatic nitro compounds to arylamines with sodium borohydride (NaBH4) at room temperature by a mechanochemical grinding technique. All the introduced catalytic systems provide excellent yields of arylamines in very short reaction times for a wide range of substrates. Also, recoverability and reusability of the new nanocomposites were investigated.
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32
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Brals J, Smith JD, Ibrahim F, Gallou F, Handa S. Micelle-Enabled Palladium Catalysis for Convenient sp2-sp3 Coupling of Nitroalkanes with Aryl Bromides in Water Under Mild Conditions. ACS Catal 2017. [DOI: 10.1021/acscatal.7b02663] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Jeremy Brals
- Department
of Chemistry, University of Louisville, 2320 S. Brook Street, Louisville, Kentucky 40292, United States
| | - Justin D. Smith
- Department
of Chemistry, University of Louisville, 2320 S. Brook Street, Louisville, Kentucky 40292, United States
| | - Faisal Ibrahim
- Department
of Chemistry, University of Louisville, 2320 S. Brook Street, Louisville, Kentucky 40292, United States
| | | | - Sachin Handa
- Department
of Chemistry, University of Louisville, 2320 S. Brook Street, Louisville, Kentucky 40292, United States
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