1
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Deng R, Dong P, Ge J, Zhang W, Xue X, Duan L, Shi L, Gu Z. Regio- and Atroposelective Ring-Opening of 1H-Benzo[4,5]oxazolopyridinones. Angew Chem Int Ed Engl 2024; 63:e202402231. [PMID: 38407456 DOI: 10.1002/anie.202402231] [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: 01/31/2024] [Revised: 02/21/2024] [Accepted: 02/21/2024] [Indexed: 02/27/2024]
Abstract
The development of new methods for regio- and stereoselective activation of C-O bonds in ethers holds significant promise for synthetic chemistry, offering advantages in terms of environmental sustainability and economic efficiency. Moreover, the C-N atropisomers represent a fascinating and crucial chiral system, extensively found in natural products, pharmaceutical leads, and the frameworks of advanced materials. In this work, we have introduced a nickel-catalyzed regio- and enantioselective carbon-oxygen arylation reaction for atroposelective synthesis of N-arylisoquinoline-1,3(2H,4H)-diones. The high regioselectivity of C-O cleavage benefits from the high stability of the in situ formed (amido)ethenolate via oxidative addition. Additionally, the self-activation of the aryl C-O bond facilitates the reaction under mild conditions, leading to outstanding enantioselectivities. The diverse post-functionalizations of the axially chiral isoquinoline-1,3(2H,4H)-diones further highlighted the utility of this protocol in preparing valuable C-N atropisomers, including the chiral phosphine ligands.
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Affiliation(s)
- Ruixian Deng
- College of Chemistry and Institute of Green Catalysis, Zhengzhou University, Zhengzhou, Henan, 450001, China
| | - Puyang Dong
- College of Chemistry and Institute of Green Catalysis, Zhengzhou University, Zhengzhou, Henan, 450001, China
| | - Jimeng Ge
- College of Chemistry and Institute of Green Catalysis, Zhengzhou University, Zhengzhou, Henan, 450001, China
| | - Wenjing Zhang
- College of Chemistry and Institute of Green Catalysis, Zhengzhou University, Zhengzhou, Henan, 450001, China
| | - Xiaoping Xue
- College of Sciences and College of Forestry, Henan Agricultural University, Zhengzhou, Henan, 450001, China
| | - Longhui Duan
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Linlin Shi
- College of Chemistry and Institute of Green Catalysis, Zhengzhou University, Zhengzhou, Henan, 450001, China
| | - Zhenhua Gu
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, 230026, China
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2
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Kumar R. Transition-Metal-Catalyzed 1,2-Diaminations of Olefins: Synthetic Methodologies and Mechanistic Studies. Chem Asian J 2024; 19:e202300705. [PMID: 37743249 DOI: 10.1002/asia.202300705] [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: 08/12/2023] [Revised: 09/20/2023] [Accepted: 09/20/2023] [Indexed: 09/26/2023]
Abstract
1,2-Diamines are synthetically important motifs in organo-catalysis, natural products, and drug research. Continuous utilization of transition-metal based catalyst in direct 1,2-diamination of olefines, in contrast to metal-free transformations, with numerous impressive advances made in recent years (2015-2023). This review summarized contemporary research on the transition-metal catalyzed/mediated [e. g., Cu(II), Pd(II), Fe(II), Rh(III), Ir(III), and Co(II)] 1,2-diamination (asymmetric and non-asymmetric) especially emphasizing the recent synthetic methodologies and mechanistic understandings. Moreover, up-to-date discussion on (i) paramount role of oxidant and catalyst (ii) key achievements (iii) generality and uniqueness, (iv) synthetic limitations or future challenges, and (v) future opportunities are summarized related to this potential area.
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Affiliation(s)
- Ravinder Kumar
- Department of Chemistry, MMEC, Maharishi Markandeshwar (Deemed to be University), Mullana, Ambala, 133207, Haryana, INDIA
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3
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Azzouz-Rached A, Bendjemai M, Husain M, Bentouaf A, Rekab-Djabri H, Tirth V, Algahtani A, Al-Mughanam T, Alghtani AH, Alrobei H, Elhadi M, Rahman N. Numerical simulation studies of the new quaternary MAX phase as future engineering applications: The case study of the Nb 2ScAC 2 (A = Al, Si) compounds. Sci Rep 2023; 13:22953. [PMID: 38135692 PMCID: PMC10746722 DOI: 10.1038/s41598-023-49172-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Accepted: 12/05/2023] [Indexed: 12/24/2023] Open
Abstract
Recently, MAX phases have attained considerable technological interest owing to their two inherent properties metallic and ceramic properties. This study extensively examined Nb2ScAC2 MAX phases using DFT, to assess the structural, mechanical, electronic, and Thermal characteristics. Firstly, the stability of these two compounds was confirmed through the formation energy, elastic constants (Cij), and phonon band structure, which confirmed their thermodynamic, mechanical, and dynamical stability. The optimized lattice parameters of these compounds were examined and then utilized to calculate the physical properties of the Nb2ScAC2 compound. Our compounds are brittle due to their Pugh's ratio of less than 1.75. The covalent bonding of the structure revealed by the Poisson ratio is less than 0.25 for the two compounds. The Nb2ScAC2 material is anisotropic, and Nb2ScAlC2 is harder than Nb2ScSiC2.The metallic character of the materials was affirmed by the electronic band structure analysis. Calculated thermal properties such as Debye temperature and minimum and lattice thermal conductivity reveal that both compounds have the potential to enhance their deployment in thermal barrier coating materials. On the other hand, the high melting temperatures indicate that our compounds could potentially be utilized in demanding or severe conditions. Finally, the thermodynamic characteristics, comprising the isochoric heat capacity (Cv) and Debye temperature (ϴD) were analyzed subjected to high temperatures and pressures. The optical constants such as real and imaginary parts of the dielectric function, refractive index and reflectivity, are investigated. The current study recognizes these two compounds as promising candidates for utilization in modern technologies and diverse industries.
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Affiliation(s)
- Ahmed Azzouz-Rached
- Magnetic Materials Laboratory, Faculty of Exact Sciences, Djillali Liabes University of Sidi Bel-Abbes, Sidi Bel-Abbes, Algeria.
| | - Mohammed Bendjemai
- Physical Engineering Laboratory, University of Tiaret, 14000, Tiaret, Algeria
| | - Mudasser Husain
- Department of Physics, University of Lakki Marwat, Lakki Marwat, Khyber Pukhtunkhwa, 28420, Pakistan.
| | - Ali Bentouaf
- Faculty of Technology, Dr. Moulay, Tahar University of Saida, 20000, Saida, Algeria
| | - Hamza Rekab-Djabri
- Faculty of Nature and Life Sciences and Earth Sciences, AkliMohand-Oulhadj University, 10000, Bouira, Algeria
| | - Vineet Tirth
- Mechanical Engineering Department, College of Engineering, King Khalid University, 61421, Abha, Asir, Kingdom of Saudi Arabia
- Research Center for Advanced Materials Science (RCAMS), King Khalid University, Guraiger, 61413, Abha, Asir, Kingdom of Saudi Arabia
| | - Ali Algahtani
- Mechanical Engineering Department, College of Engineering, King Khalid University, 61421, Abha, Asir, Kingdom of Saudi Arabia
- Research Center for Advanced Materials Science (RCAMS), King Khalid University, Guraiger, 61413, Abha, Asir, Kingdom of Saudi Arabia
| | - Tawfiq Al-Mughanam
- Department of Mechanical Engineering, College of Engineering, King Faisal University, P. O. Box 380, Al-Ahsa, 31982, Kingdom of Saudi Arabia
| | - Abdulaziz H Alghtani
- Department of Mechanical Engineering, College of Engineering, Taif University, P.O. Box 11099, Taif, 21944, Kingdom of Saudi Arabia
| | - Hussein Alrobei
- Department of Mechanical Engineering, College of Engineering, Prince Sattam Bin Abdul Aziz University, Al-Kharj, 11942, Kingdom of Saudi Arabia
| | - Muawya Elhadi
- Department of Physics, Faculty of Science and Humanities, Shaqra University, P. O. Box 1040, Ad-Dawadimi, 11911, Kingdom of Saudi Arabia
| | - Nasir Rahman
- Department of Physics, University of Lakki Marwat, Lakki Marwat, Khyber Pukhtunkhwa, 28420, Pakistan.
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4
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Lu CJ, Xu Q, Feng J, Liu RR. The Asymmetric Buchwald-Hartwig Amination Reaction. Angew Chem Int Ed Engl 2023; 62:e202216863. [PMID: 36535894 DOI: 10.1002/anie.202216863] [Citation(s) in RCA: 18] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 12/16/2022] [Accepted: 12/19/2022] [Indexed: 12/24/2022]
Abstract
Over the past few decades, the Buchwald-Hartwig reaction has emerged as a powerful tool for forging C-N bonds, and has been vital to the pharmaceuticals, materials, and catalysis fields. However, asymmetric Buchwald-Hartwig amination reactions for constructing centered chirality, planar chirality, and axial chirality remain in their infancy owing to limited substrate scope and laggard ligand design. The recent surge in interest in the synthesis of C-N/N-N atropisomers, has witnessed a renaissance in asymmetric Buchwald-Hartwig amination chemistry as the first practical protocol for the preparation of C-N atropisomers. This review highlights reported asymmetric Buchwald-Hartwig amination protocols and provides a brief overview of their chemical practicality.
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Affiliation(s)
- Chuan-Jun Lu
- College of Chemistry and Chemical Engineering, Qingdao University, Ningxia Road 308, Qingdao, 266071, China
| | - Qi Xu
- College of Chemistry and Chemical Engineering, Qingdao University, Ningxia Road 308, Qingdao, 266071, China
| | - Jia Feng
- College of Chemistry and Chemical Engineering, Qingdao University, Ningxia Road 308, Qingdao, 266071, China
| | - Ren-Rong Liu
- College of Chemistry and Chemical Engineering, Qingdao University, Ningxia Road 308, Qingdao, 266071, China
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5
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Rodríguez‐Salamanca P, Fernández R, Hornillos V, Lassaletta JM. Asymmetric Synthesis of Axially Chiral C-N Atropisomers. Chemistry 2022; 28:e202104442. [PMID: 35191558 PMCID: PMC9314733 DOI: 10.1002/chem.202104442] [Citation(s) in RCA: 59] [Impact Index Per Article: 29.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Indexed: 12/16/2022]
Abstract
Molecules with restricted rotation around a single bond or atropisomers are found in a wide number of natural products and bioactive molecules as well as in chiral ligands for asymmetric catalysis and smart materials. Although most of these compounds are biaryls and heterobiaryls displaying a C−C stereogenic axis, there is a growing interest in less common and more challenging axially chiral C−N atropisomers. This review offers an overview of the various methodologies available for their asymmetric synthesis. A brief introduction is initially given to contextualize these axially chiral skeletons, including a historical background and examples of natural products containing axially chiral C−N axes. The preparation of different families of C−N based atropisomers is then presented from anilides to chiral five‐ and six‐membered ring heterocycles. Special emphasis has been given to modern catalytic asymmetric strategies over the past decade for the synthesis of these chiral scaffolds. Applications of these methods to the preparation of natural products and biologically active molecules will be highlighted along the text.
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Affiliation(s)
- Patricia Rodríguez‐Salamanca
- Instituto de Investigaciones Químicas (CSIC-US) and Centro deInnovación en Química Avanzada (ORFEO-CINQA)C/ Américo Vespucio, 4941092SevillaSpain
| | - Rosario Fernández
- Departamento de Química OrgánicaUniversidad de Sevilla) and Centro de Innovación en Química Avanzada (ORFEO-CINQA) C/ Prof. García González, 141012SevillaSpain
| | - Valentín Hornillos
- Instituto de Investigaciones Químicas (CSIC-US) and Centro deInnovación en Química Avanzada (ORFEO-CINQA)C/ Américo Vespucio, 4941092SevillaSpain
- Departamento de Química OrgánicaUniversidad de Sevilla) and Centro de Innovación en Química Avanzada (ORFEO-CINQA) C/ Prof. García González, 141012SevillaSpain
| | - José M. Lassaletta
- Instituto de Investigaciones Químicas (CSIC-US) and Centro deInnovación en Química Avanzada (ORFEO-CINQA)C/ Américo Vespucio, 4941092SevillaSpain
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6
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Chen KW, Chen ZH, Yang S, Wu SF, Zhang YC, Shi F. Organocatalytic Atroposelective Synthesis of N-N Axially Chiral Indoles and Pyrroles by De Novo Ring Formation. Angew Chem Int Ed Engl 2022; 61:e202116829. [PMID: 35080808 DOI: 10.1002/anie.202116829] [Citation(s) in RCA: 49] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Indexed: 12/16/2022]
Abstract
The first highly atroposelective construction of N-N axially chiral indole scaffolds was established via a new strategy of de novo ring formation. This strategy makes use of the organocatalytic asymmetric Paal-Knorr reaction of well-designed N-aminoindoles with 1,4-diketones, thus affording N-pyrrolylindoles in high yields and with excellent atroposelectivities (up to 98 % yield, 96 % ee). In addition, this strategy is applicable for the atroposelective synthesis of N-N axially chiral bispyrroles (up to 98 % yield, 97 % ee). More importantly, such N-N axially chiral heterocycles can be converted into chiral organocatalysts with applications in asymmetric catalysis, and some molecules display potent anticancer activity. This work not only provides a new strategy for the atroposelective synthesis of N-N axially chiral molecules but also offers new members of the N-N atropisomer family with promising applications in synthetic and medicinal chemistry.
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Affiliation(s)
- Ke-Wei Chen
- School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, 221116, China
| | - Zhi-Han Chen
- School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, 221116, China
| | - Shuang Yang
- School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, 221116, China
| | - Shu-Fang Wu
- School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, 221116, China
| | - Yu-Chen Zhang
- School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, 221116, China
| | - Feng Shi
- School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, 221116, China
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7
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Chen K, Chen Z, Yang S, Wu S, Zhang Y, Shi F. Organocatalytic Atroposelective Synthesis of N−N Axially Chiral Indoles and Pyrroles by De Novo Ring Formation. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202116829] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Ke‐Wei Chen
- School of Chemistry and Materials Science Jiangsu Normal University Xuzhou 221116 China
| | - Zhi‐Han Chen
- School of Chemistry and Materials Science Jiangsu Normal University Xuzhou 221116 China
| | - Shuang Yang
- School of Chemistry and Materials Science Jiangsu Normal University Xuzhou 221116 China
| | - Shu‐Fang Wu
- School of Chemistry and Materials Science Jiangsu Normal University Xuzhou 221116 China
| | - Yu‐Chen Zhang
- School of Chemistry and Materials Science Jiangsu Normal University Xuzhou 221116 China
| | - Feng Shi
- School of Chemistry and Materials Science Jiangsu Normal University Xuzhou 221116 China
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8
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An QJ, Xia W, Ding WY, Liu HH, Xiang SH, Wang YB, Zhong G, Tan B. Nitrosobenzene-Enabled Chiral Phosphoric Acid Catalyzed Enantioselective Construction of Atropisomeric N-Arylbenzimidazoles. Angew Chem Int Ed Engl 2021; 60:24888-24893. [PMID: 34553823 DOI: 10.1002/anie.202111251] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 09/22/2021] [Indexed: 12/18/2022]
Abstract
Described herein is an imidazole ring formation strategy for the synthesis of axially chiral N-arylbenzimidazoles by means of chiral phosphoric acid catalysis. Two sets of conditions were developed to transform two classes of 2-naphthylamine derivatives into structurally diverse N-arylbenzimidazole atropisomers with excellent chemo- and regioselectivity as well as high levels of enantiocontrol. It is worth reflecting on the unique roles played by the nitroso group in this domino reaction. It functions as a linchpin by first offering an electrophilic site (N) for the initial C-N bond formation while the resulting amine performs the nucleophilic addition to form the second C-N bond. Additionally, it could facilitate the final oxidative aromatization as an oxidant. The atropisomeric products could be conveniently elaborated to a series of axially chiral derivatives, enabling the exploitation of N-arylbenzimidazoles for their potential utilities in asymmetric catalysis.
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Affiliation(s)
- Qian-Jin An
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Wang Xia
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Wei-Yi Ding
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Huan-Huan Liu
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Shao-Hua Xiang
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Yong-Bin Wang
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Guofu Zhong
- College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, 311121, China
| | - Bin Tan
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, 518055, China
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9
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An Q, Xia W, Ding W, Liu H, Xiang S, Wang Y, Zhong G, Tan B. Nitrosobenzene‐Enabled Chiral Phosphoric Acid Catalyzed Enantioselective Construction of Atropisomeric
N
‐Arylbenzimidazoles. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202111251] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Qian‐Jin An
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and Technology Shenzhen 518055 China
| | - Wang Xia
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and Technology Shenzhen 518055 China
| | - Wei‐Yi Ding
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and Technology Shenzhen 518055 China
| | - Huan‐Huan Liu
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and Technology Shenzhen 518055 China
| | - Shao‐Hua Xiang
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and Technology Shenzhen 518055 China
| | - Yong‐Bin Wang
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and Technology Shenzhen 518055 China
| | - Guofu Zhong
- College of Materials, Chemistry and Chemical Engineering Hangzhou Normal University Hangzhou 311121 China
| | - Bin Tan
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and Technology Shenzhen 518055 China
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