1
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Mei YT, Zhang H, Jiang Y, Gu YJ, Deng JL, Yang D, Jing LH, Shi MS. Modular access to diarylmethyl sulfonamides via visible light-promoted cross-coupling reactions. Chem Commun (Camb) 2024; 60:8589-8592. [PMID: 39045678 DOI: 10.1039/d4cc02571g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/25/2024]
Abstract
We report a novel and efficient method for the preparation of diarylmethyl sulfonamide derivatives through visible-light-induced sulfamoylation of para-quinone methides with sulfamoyl chlorides under mild, metal-free conditions. This protocol demonstrates excellent tolerance toward a wide range of functional groups, affording the corresponding products in moderate to high yields. Preliminary mechanism studies revealed that the excited photocatalyst rhodamine 6G* was mainly quenched by para-quinone methides and the generated diarylmethyl radical intermediates then underwent radical-radical cross-coupling with sulfamoyl radicals to yield the diarylmethyl sulfonamides.
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Affiliation(s)
- Yu-Tong Mei
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637002, China.
| | - Hui Zhang
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637002, China.
| | - Yu Jiang
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637002, China.
| | - Yu-Jia Gu
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637002, China.
| | - Jiang-Lai Deng
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637002, China.
| | - Dan Yang
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637002, China.
| | - Lin-Hai Jing
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637002, China.
| | - Ming-Song Shi
- NHC Key Laboratory of Nuclear Technology Medical Transformation, Mianyang Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Mianyang 621099, China.
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2
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Tse MH, Choy PY, Kwong FY. Facile Assembly of Modular-Type Phosphines for Tackling Modern Arylation Processes. Acc Chem Res 2022; 55:3688-3705. [PMID: 36472355 DOI: 10.1021/acs.accounts.2c00587] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
This Account presents an overview of a promising collection of phosphine ligands simply made from the modular Fischer indolization process and their applications in modern arylation processes. Using one easily accessible 2-arylindole scaffold, three major phosphino-moiety-positioned ligand series can be readily generated. We have attempted to explore challenging electrophilic and nucleophilic partners for the coupling reaction using the modular ligand tool. For the electrophilic partner study, CM-phos-type ligands, where the phosphino group is located at the 2-arene position of 2-arylindole, allow the successful cross-coupling of aryl mesylates. The CM-phos ligand forms a palladacycle before entering the cross-coupling catalytic cycle. For the nucleophilic partner investigation, the indole C3-positioned phosphines show the first accomplishment of Pd-catalyzed organotitanium nucleophile arylation. Indeed, the aryl-titanium nucleophile undergoes cross-coupling more efficiently than does the organoboron coupling partner in particular cases. Moreover, in the indole C3-positioned phosphine series, the -PPh2-containing ligands perform better in the highly sterically hindered cross-coupling of aryl chlorides than do ligands containing the -PCy2 moiety. The catalyst loading can even be reduced to 0.2 mol % Pd for tetra-ortho-substituted biaryl synthesis. This finding offers a new perspective on the next-generation design of phosphine ligands in which the sterically bulky and electron-rich -PR2 group (R = alkyl) may not be necessary for the cross-coupling of aryl chlorides. In general, we hypothesize that a good balance of steric and electronic properties for entertaining the oxidative addition and reductive elimination steps is crucial to the success of the reaction. For the steric factor, the highly sterically congested -PR2 group normally favors the reductive elimination, yet we conjecture that this sterically bulky group would serve as an obstacle for the incoming aryl halides. For the electronic factor, the electron rich -PR2 group is believed to support the oxidative cleavage of the C(Ar)-Cl bond by donating more electron density to the corresponding σ* orbital. Nevertheless, the high electron richness of the -PR2 group may disfavor the reductive elimination electronically. Overall, an appropriate balance of both electron density and steric bulkiness is suggested to allow the sterically hindered cross-coupling to proceed smoothly. We have found that the -PPh2-containing ligand is a good starting point for this investigation. The formation of aromatic carbon-carbon (C-C) and carbon-heteroatom (C-X) bonds from aryl chlorides was successfully realized using our proprietary phosphines.In addition to the indole-core-bearing ligand skeleton, we also explored the relevant imidazolyl and carbazolyl phosphines for their unique applications. Interestingly, the carbazolyl ligand, having more flexible C-N axial chirality, displays particular interchangeable Pd-N and Pd-arene coordination, which facilitates both oxidative addition and reductive elimination processes. Moreover, this C-N axially chiral ligand allows the successful asymmetric Suzuki-Miyaura coupling for attaining the most sterically hindered tetra-ortho-substituted biaryls with excellent enantioselectivity. The rationale behind these scientifically interesting findings is presented in detail.
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Affiliation(s)
- Man Ho Tse
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China.,Shenzhen Municipal Key Laboratory of Chemical Synthesis of Medicinal Organic Molecules, Shenzhen Research Institute, The Chinese University of Hong Kong, No. 10, Second Yuexing Road, Shenzhen 518507, China
| | - Pui Ying Choy
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China.,Shenzhen Municipal Key Laboratory of Chemical Synthesis of Medicinal Organic Molecules, Shenzhen Research Institute, The Chinese University of Hong Kong, No. 10, Second Yuexing Road, Shenzhen 518507, China
| | - Fuk Yee Kwong
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China.,Shenzhen Municipal Key Laboratory of Chemical Synthesis of Medicinal Organic Molecules, Shenzhen Research Institute, The Chinese University of Hong Kong, No. 10, Second Yuexing Road, Shenzhen 518507, China
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3
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Orooji Y, Pakzad K, Nasrollahzadeh M, Tajbakhsh M. Novel magnetic lignosulfonate-supported Pd complex as an efficient nanocatalyst for N-arylation of 4-methylbenzenesulfonamide. Int J Biol Macromol 2021; 182:564-573. [PMID: 33798580 DOI: 10.1016/j.ijbiomac.2021.03.165] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 03/26/2021] [Accepted: 03/28/2021] [Indexed: 11/25/2022]
Abstract
This study presents a novel, economical, and environmentally technique for synthesizing magnetic palladium complex conjugated to activated calcium lignosulfonate with triethylenetetramine (Fe3O4@lignosulfonate@triethylenetetramine@Pd complex (FLT-Pd complex)) as a practical and air-stable catalyst. FLT-Pd complex is used as a catalyst for the fabrication of 4-methyl-N-phenyl-benzenesulfonamide derivatives via N-arylation of 4-methylbenzenesulfonamide in good yields. Furthermore, because of the complex magnetic reparability and high stability, it could be removed easily from the reaction media using a magnet and reused 5 cycles without a remarkable loss of catalytic prowess.
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Affiliation(s)
- Yasin Orooji
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China.
| | - Khatereh Pakzad
- Faculty of Chemistry, University of Mazandaran, Babolsar 47416-13534, Iran
| | | | - Mahmood Tajbakhsh
- Faculty of Chemistry, University of Mazandaran, Babolsar 47416-13534, Iran
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4
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Zhang R, Zhang Y, Huang G, Xin X, Tang L, Li H, Lee KS, Jin BR, Gui Z. Chemical synthesis, inhibitory activity and molecular mechanism of 1-deoxynojirimycin–chrysin as a potent α-glucosidase inhibitor. RSC Adv 2021; 11:38703-38711. [PMID: 35493254 PMCID: PMC9044198 DOI: 10.1039/d1ra07753h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Accepted: 11/17/2021] [Indexed: 11/21/2022] Open
Abstract
Hyperglycemia can be efficaciously regulated by inhibiting α-glucosidase activity and this is regarded as an effective strategy to treat type 2 diabetes.
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Affiliation(s)
- Ran Zhang
- School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang 212100, Jiangsu, People's Republic of China
- Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang 212100, Jiangsu, People's Republic of China
| | - Yueyue Zhang
- School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang 212100, Jiangsu, People's Republic of China
| | - Gaiqun Huang
- School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang 212100, Jiangsu, People's Republic of China
- Sericultural Research Institute, Sichuan Academy of Agricultural Sciences, Nanchong 637000, Sichuan, People's Republic of China
| | - Xiangdong Xin
- School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang 212100, Jiangsu, People's Republic of China
| | - Liumei Tang
- School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang 212100, Jiangsu, People's Republic of China
| | - Hao Li
- School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang 212100, Jiangsu, People's Republic of China
- Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang 212100, Jiangsu, People's Republic of China
| | - Kwang Sik Lee
- College of Natural Resources and Life Science, Dong-A University, Busan 49315, Republic of Korea
| | - Byung Rae Jin
- College of Natural Resources and Life Science, Dong-A University, Busan 49315, Republic of Korea
| | - Zhongzheng Gui
- School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang 212100, Jiangsu, People's Republic of China
- Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang 212100, Jiangsu, People's Republic of China
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5
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A domino reaction for generating β-aryl aldehydes from alkynes by substrate recognition catalysis. Nat Commun 2019; 10:4868. [PMID: 31653836 PMCID: PMC6814718 DOI: 10.1038/s41467-019-12770-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2019] [Accepted: 09/24/2019] [Indexed: 12/31/2022] Open
Abstract
The development of universal catalyst systems that enable efficient, selective, and straightforward chemical transformations is of immense scientific importance. Here we develop a domino process comprising three consecutive reaction steps based on the strategy of supramolecular substrate recognition. This approach provides valuable β-aryl aldehydes from readily accessible α-alkynoic acids and arenes under mild reaction conditions, employing a supramolecular Rh catalyst containing an acylguanidine-bearing phosphine ligand. Furthermore, the synthesis of a key intermediate of Avitriptan using this protocol is accomplished. The first step of the reaction sequence is proved to be the regioselective hydroformylation of α-alkynoic acids. Remarkably, molecular recognition of the ligand and the substrate via hydrogen bonding plays a key role in this step. Control experiments indicate that the reaction further proceeds via 1,4-addition of an arene nucleophile to the unsaturated aldehyde intermediate and subsequent decarboxylation.
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6
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Wang X, Zeng X, Lin Q, Li M, Walsh PJ, Chruma JJ. Palladium‐Catalysed Decarboxylative Generation and Regiodivergent Prenylation of 2‐Azaallyl Anions. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900491] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Xiaoqian Wang
- Key Laboratory of Green Chemistry & Technology (MOE), College of Chemistry and Sino-British Materials Research Institute, College of Physical Science & Technology Sichuan University No. 29, Wangjiang Road, Chengdu Sichuan 610064 People's Republic of China
| | - Xi Zeng
- Key Laboratory of Green Chemistry & Technology (MOE), College of Chemistry and Sino-British Materials Research Institute, College of Physical Science & Technology Sichuan University No. 29, Wangjiang Road, Chengdu Sichuan 610064 People's Republic of China
| | - Qiao Lin
- Key Laboratory of Green Chemistry & Technology (MOE), College of Chemistry and Sino-British Materials Research Institute, College of Physical Science & Technology Sichuan University No. 29, Wangjiang Road, Chengdu Sichuan 610064 People's Republic of China
| | - Minyan Li
- Roy and Diana Vagelos Laboratories, Penn/Merck Laboratory for High-Throughput Experimentation, Department of Chemistry University of Pennsylvania 231 South 34th Street, Philadelphia Pennsylvania 19104-6323 United States
| | - Patrick J. Walsh
- Roy and Diana Vagelos Laboratories, Penn/Merck Laboratory for High-Throughput Experimentation, Department of Chemistry University of Pennsylvania 231 South 34th Street, Philadelphia Pennsylvania 19104-6323 United States
| | - Jason J. Chruma
- Key Laboratory of Green Chemistry & Technology (MOE), College of Chemistry and Sino-British Materials Research Institute, College of Physical Science & Technology Sichuan University No. 29, Wangjiang Road, Chengdu Sichuan 610064 People's Republic of China
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7
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Trongsiriwat N, Li M, Pascual‐Escudero A, Yucel B, Walsh PJ. Palladium‐Catalyzed Allylic Alkylation of 2‐Aryl‐1,3‐Dithianes, an Umpolung Synthesis of β,γ‐Unsaturated Ketones. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201801035] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Nisalak Trongsiriwat
- Department of Chemistry University of Pennsylvania 231 S. 34th St. Philadelphia PA 19104 USA
| | - Minyan Li
- Department of Chemistry University of Pennsylvania 231 S. 34th St. Philadelphia PA 19104 USA
| | - Ana Pascual‐Escudero
- Dpto. Química Orgánica, Facultad de Ciencias Universidad Autónoma de Madrid Madrid Spain
| | - Baris Yucel
- Istanbul Technical University, Science Faculty Department of Chemistry, Maslak 34469 Istanbul Turkey
| | - Patrick J. Walsh
- Department of Chemistry University of Pennsylvania 231 S. 34th St. Philadelphia PA 19104 USA
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8
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Palladium-Catalyzed Direct α-Arylation of Methane Sulfonamides with Aryl Bromides. ChemistrySelect 2018. [DOI: 10.1002/slct.201702813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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9
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Zhu M, Wang L, Wang Y, Zhou J, Ding J, Li W, Xin Y, Fan S, Wang Z, Wang Y. Biointeractions of Herbicide Atrazine with Human Serum Albumin: UV-Vis, Fluorescence and Circular Dichroism Approaches. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2018; 15:ijerph15010116. [PMID: 29324720 PMCID: PMC5800215 DOI: 10.3390/ijerph15010116] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/22/2017] [Revised: 01/06/2018] [Accepted: 01/09/2018] [Indexed: 12/17/2022]
Abstract
The herbicide atrazine is widely used across the globe, which is a great concern. To investigate its potential toxicity in the human body, human serum albumin (HSA) was selected as a model protein. The interaction between atrazine and HSA was investigated using steady-state fluorescence spectroscopy, synchronous fluorescence spectroscopy, UV-Vis spectroscopy, three-dimensional (3D) fluorescence spectroscopy and circular dichroism (CD) spectroscopy. The intrinsic fluorescence of HSA was quenched by the atrazine through a static quenching mechanism. Fluorescence spectra at two excitation wavelengths (280 and 295 nm) showed that the fluorescence quenched in HSA was mainly contributed to by tryptophan residues. In addition, the atrazine bound to HSA, which induced changes in the conformation and secondary structure of HSA and caused an energy transfer. Thermodynamic parameters revealed that this binding is spontaneous. Moreover, electrostatic interactions play a major role in the combination of atrazine and HSA. One atrazine molecule can only bind to one HSA molecule to form a complex, and the atrazine molecule is bound at site II (subdomain IIIA) of HSA. This study furthers the understanding of the potential effects posed by atrazine on humans at the molecular level.
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Affiliation(s)
- Meiqing Zhu
- Key Laboratory of Agri-Food Safety of Anhui Province, School of Resources and Environment, Anhui Agricultural University, Hefei 230036, China.
| | - Lijun Wang
- Key Laboratory of Agri-Food Safety of Anhui Province, School of Resources and Environment, Anhui Agricultural University, Hefei 230036, China.
| | - Yu Wang
- Key Laboratory of Agri-Food Safety of Anhui Province, School of Resources and Environment, Anhui Agricultural University, Hefei 230036, China.
| | - Jie Zhou
- Key Laboratory of Agri-Food Safety of Anhui Province, School of Resources and Environment, Anhui Agricultural University, Hefei 230036, China.
| | - Jie Ding
- Key Laboratory of Agri-Food Safety of Anhui Province, School of Resources and Environment, Anhui Agricultural University, Hefei 230036, China.
| | - Wei Li
- Key Laboratory of Agri-Food Safety of Anhui Province, School of Resources and Environment, Anhui Agricultural University, Hefei 230036, China.
| | - Yue Xin
- Key Laboratory of Agri-Food Safety of Anhui Province, School of Resources and Environment, Anhui Agricultural University, Hefei 230036, China.
| | - Shisuo Fan
- Key Laboratory of Agri-Food Safety of Anhui Province, School of Resources and Environment, Anhui Agricultural University, Hefei 230036, China.
| | - Zhen Wang
- Key Laboratory of Agri-Food Safety of Anhui Province, School of Resources and Environment, Anhui Agricultural University, Hefei 230036, China.
| | - Yi Wang
- Key Laboratory of Agri-Food Safety of Anhui Province, School of Resources and Environment, Anhui Agricultural University, Hefei 230036, China.
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10
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Liu Z, Li M, Wang B, Deng G, Chen W, Kim BS, Zhang H, Yang X, Walsh PJ. Chemoselective synthesis of aryl(pyridinyl)methanol derivatives through Ni-NIXANTPHOS catalyzed α-arylation and tandem arylation/rearrangement of pyridylmethyl ethers. Org Chem Front 2018. [DOI: 10.1039/c8qo00207j] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
An efficient synthesis of aryl(pyridyl)-methanol derivatives using Ni-NIXANTPHOS catalyzed α-arylation and tandem arylation/rearrangement is described.
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Affiliation(s)
- Zhengfen Liu
- Key Laboratory of Medicinal Chemistry for Natural Resources
- Ministry of Education and Yunnan Province
- School of Chemical Science and Technology
- Yunnan University
- Kunming
| | - Minyan Li
- Department of Chemistry
- Roy and Diana Vagelos Laboratories
- Penn/Merck Laboratory for High-Throughput Experimentation
- University of Pennsylvania
- Philadelphia
| | - Bijun Wang
- Key Laboratory of Medicinal Chemistry for Natural Resources
- Ministry of Education and Yunnan Province
- School of Chemical Science and Technology
- Yunnan University
- Kunming
| | - Guogang Deng
- Key Laboratory of Medicinal Chemistry for Natural Resources
- Ministry of Education and Yunnan Province
- School of Chemical Science and Technology
- Yunnan University
- Kunming
| | - Wen Chen
- Key Laboratory of Medicinal Chemistry for Natural Resources
- Ministry of Education and Yunnan Province
- School of Chemical Science and Technology
- Yunnan University
- Kunming
| | - Byeong-Seon Kim
- Department of Chemistry
- Roy and Diana Vagelos Laboratories
- Penn/Merck Laboratory for High-Throughput Experimentation
- University of Pennsylvania
- Philadelphia
| | - Hongbin Zhang
- Key Laboratory of Medicinal Chemistry for Natural Resources
- Ministry of Education and Yunnan Province
- School of Chemical Science and Technology
- Yunnan University
- Kunming
| | - Xiaodong Yang
- Key Laboratory of Medicinal Chemistry for Natural Resources
- Ministry of Education and Yunnan Province
- School of Chemical Science and Technology
- Yunnan University
- Kunming
| | - Patrick J. Walsh
- Department of Chemistry
- Roy and Diana Vagelos Laboratories
- Penn/Merck Laboratory for High-Throughput Experimentation
- University of Pennsylvania
- Philadelphia
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11
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Liu R, Wang L, Li Q, Liao M, Yang Z, Huang Y, Zheng B, Bian Q, Wang M, Liu S. Enantioselective Synthesis of Optically Active O
-Benzoyl-Protected α-Hydroxyl-β,γ-Unsaturated Acids with Chiral Induction of ( S
)-Glyceraldehyde Acetonide. ChemistrySelect 2017. [DOI: 10.1002/slct.201702244] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Ruiquan Liu
- Department of Applied Chemistry; China Agricultural University; NO. 2 Yuanmingyuan West Road Beijing 100193, P. R. China
| | - Lei Wang
- Nutrichem Company Limited; No. 27 Life Sciences Park Road, Changping District Beijing 102206, P.R. China
| | - Qibo Li
- Department of Applied Chemistry; China Agricultural University; NO. 2 Yuanmingyuan West Road Beijing 100193, P. R. China
| | - Min Liao
- Department of Applied Chemistry; China Agricultural University; NO. 2 Yuanmingyuan West Road Beijing 100193, P. R. China
| | - Zhikun Yang
- Department of Applied Chemistry; China Agricultural University; NO. 2 Yuanmingyuan West Road Beijing 100193, P. R. China
| | - Yun Huang
- Department of Applied Chemistry; China Agricultural University; NO. 2 Yuanmingyuan West Road Beijing 100193, P. R. China
| | - Bing Zheng
- Department of Applied Chemistry; China Agricultural University; NO. 2 Yuanmingyuan West Road Beijing 100193, P. R. China
| | - Qinghua Bian
- Department of Applied Chemistry; China Agricultural University; NO. 2 Yuanmingyuan West Road Beijing 100193, P. R. China
| | - Min Wang
- Department of Applied Chemistry; China Agricultural University; NO. 2 Yuanmingyuan West Road Beijing 100193, P. R. China
| | - Shangzhong Liu
- Department of Applied Chemistry; China Agricultural University; NO. 2 Yuanmingyuan West Road Beijing 100193, P. R. China
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12
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Li M, Berritt S, Matuszewski L, Deng G, Pascual-Escudero A, Panetti GB, Poznik M, Yang X, Chruma JJ, Walsh PJ. Transition-Metal-Free Radical C(sp 3)-C(sp 2) and C(sp 3)-C(sp 3) Coupling Enabled by 2-Azaallyls as Super-Electron-Donors and Coupling-Partners. J Am Chem Soc 2017; 139:16327-16333. [PMID: 29019654 PMCID: PMC5737768 DOI: 10.1021/jacs.7b09394] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
The past decade has witnessed the rapid development of radical generation strategies and their applications in C-C bond-forming reactions. Most of these processes require initiators, transition metal catalysts, or organometallic reagents. Herein, we report the discovery of a simple organic system (2-azaallyl anions) that enables radical coupling reactions under transition-metal-free conditions. Deprotonation of N-benzyl ketimines generates semistabilized 2-azaallyl anions that behave as "super-electron-donors" (SEDs) and reduce aryl iodides and alkyl halides to aryl and alkyl radicals. The SET process converts the 2-azaallyl anions into persistent 2-azaallyl radicals, which capture the aryl and alkyl radicals to form C-C bonds. The radical coupling of aryl and alkyl radicals with 2-azaallyl radicals makes possible the synthesis of functionalized amine derivatives without the use of exogenous radical initiators or transition metal catalysts. Radical clock studies and 2-azaallyl anion coupling studies provide mechanistic insight for this unique reactivity.
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Affiliation(s)
- Minyan Li
- Department of Chemistry, Roy and Diana Vagelos Laboratories, Penn/Merck Laboratory for High-Throughput Experimentation, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104, USA
| | - Simon Berritt
- Department of Chemistry, Roy and Diana Vagelos Laboratories, Penn/Merck Laboratory for High-Throughput Experimentation, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104, USA
| | - Lucas Matuszewski
- Department of Chemistry, Roy and Diana Vagelos Laboratories, Penn/Merck Laboratory for High-Throughput Experimentation, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104, USA
| | - Guogang Deng
- Key Laboratory of Medicinal Chemistry for Natural Resource, School of Chemical Science and Technology, Yunnan University, Kunming, 650091, China
| | - Ana Pascual-Escudero
- Dpto. Química Orgánica, Facultad de Ciencias, Universidad Autónoma de Madrid, Madrid, Spain
| | - Grace B. Panetti
- Department of Chemistry, Roy and Diana Vagelos Laboratories, Penn/Merck Laboratory for High-Throughput Experimentation, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104, USA
| | - Michal Poznik
- Key Laboratory of Green Chemistry & Technology (MOE), College of Chemistry and Sino-British Materials Research Institute, College of Physical Science & Technology, Sichuan University, No. 29, Wangjiang Road, Chengdu, Sichuan, 610064, China
| | - Xiaodong Yang
- Key Laboratory of Medicinal Chemistry for Natural Resource, School of Chemical Science and Technology, Yunnan University, Kunming, 650091, China
| | - Jason J. Chruma
- Key Laboratory of Green Chemistry & Technology (MOE), College of Chemistry and Sino-British Materials Research Institute, College of Physical Science & Technology, Sichuan University, No. 29, Wangjiang Road, Chengdu, Sichuan, 610064, China
| | - Patrick J. Walsh
- Department of Chemistry, Roy and Diana Vagelos Laboratories, Penn/Merck Laboratory for High-Throughput Experimentation, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104, USA
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13
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Gao G, Fu Y, Li M, Wang B, Zheng B, Hou S, Walsh PJ. Arylation of Azaarylmethylamines with Aryl Chlorides and a NiBr 2/NIXANTPHOS-based Catalyst. Adv Synth Catal 2017. [PMID: 29531521 DOI: 10.1002/adsc.201700438] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A nickel-catalyzed coupling of azaarylmethylamines with aryl chlorides has been achieved. NIXANTPHOS together with low cost NiBr2 was successfully developed and optimized to exhibit high reactivity at 2.5 mol % loading. Under optimized reaction conditions, aryl(azaaryl)methylamine products were afforded in good to excellent yields (22 examples, up to 98% yield).
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Affiliation(s)
- Gui Gao
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, P. R. China
| | - Yue Fu
- Roy and Diana Vagelos Laboratories, Penn/Merck Laboratory for High-Throughput Experimentation, Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104-6323, United States
| | - Minyan Li
- Roy and Diana Vagelos Laboratories, Penn/Merck Laboratory for High-Throughput Experimentation, Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104-6323, United States
| | - Bo Wang
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, P. R. China
| | - Bing Zheng
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, P. R. China
| | - Shicong Hou
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, P. R. China
| | - Patrick J Walsh
- Roy and Diana Vagelos Laboratories, Penn/Merck Laboratory for High-Throughput Experimentation, Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104-6323, United States
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14
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Xu L, Hu R, Tang BZ. Room Temperature Multicomponent Polymerizations of Alkynes, Sulfonyl Azides, and Iminophosphorane toward Heteroatom-Rich Multifunctional Poly(phosphorus amidine)s. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b01096] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Liguo Xu
- State
Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China
| | - Rongrong Hu
- State
Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China
| | - Ben Zhong Tang
- State
Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Centre for Tissue Restoration and Reconstruction, The Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong
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15
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Zhang CB, Liu Y, Liu ZF, Duan SZ, Li MY, Chen W, Li Y, Zhang HB, Yang XD. Synthesis and cytotoxic activity of novel tetrahydrobenzodifuran–imidazolium salt derivatives. Bioorg Med Chem Lett 2017; 27:1808-1814. [DOI: 10.1016/j.bmcl.2017.02.053] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Revised: 02/10/2017] [Accepted: 02/22/2017] [Indexed: 01/13/2023]
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16
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Gao G, Zheng B, Fu Y, Li M, Wang B, Chen X, Zhang Y, Liu J, Hou S, Walsh PJ. Palladium‐Catalyzed Chemoselective α‐Arylation of Methyl Sulfones with Aryl Chlorides. ASIAN J ORG CHEM 2017. [DOI: 10.1002/ajoc.201700075] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Gui Gao
- Department of Applied Chemistry China Agricultural University Beijing 100193 China
| | - Bing Zheng
- Department of Applied Chemistry China Agricultural University Beijing 100193 China
| | - Yue Fu
- Roy and Diana Vagelos Laboratories, Penn/Merck Laboratory for High-Throughput Experimentation Department of Chemistry University of Pennsylvania 231 South 34th Street Philadelphia Pennsylvania 19104-6323 USA
| | - Minyan Li
- Roy and Diana Vagelos Laboratories, Penn/Merck Laboratory for High-Throughput Experimentation Department of Chemistry University of Pennsylvania 231 South 34th Street Philadelphia Pennsylvania 19104-6323 USA
| | - Bo Wang
- Department of Applied Chemistry China Agricultural University Beijing 100193 China
| | - Xiang‐Zhu Chen
- Department of Applied Chemistry China Agricultural University Beijing 100193 China
| | - Yuan‐Yuan Zhang
- Department of Applied Chemistry China Agricultural University Beijing 100193 China
| | - Jing‐Jing Liu
- Department of Applied Chemistry China Agricultural University Beijing 100193 China
| | - Shi‐Cong Hou
- Department of Applied Chemistry China Agricultural University Beijing 100193 China
| | - Patrick J. Walsh
- Roy and Diana Vagelos Laboratories, Penn/Merck Laboratory for High-Throughput Experimentation Department of Chemistry University of Pennsylvania 231 South 34th Street Philadelphia Pennsylvania 19104-6323 USA
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17
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Abdulla O, Clayton AD, Faulkner RA, Gill DM, Rice CR, Walton SM, Sweeney JB. Catalytic sp 3 -sp 3 Functionalisation of Sulfonamides: Late-Stage Modification of Drug-Like Molecules. Chemistry 2017; 23:1494-1497. [PMID: 27897342 DOI: 10.1002/chem.201605464] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2016] [Indexed: 12/14/2022]
Abstract
A new application of Pd-catalysed allylation is reported that enables the synthesis of a range of branched sp3 -functionalised sulfonamides, a compound class for which few reported methods exist. By reacting benzyl sulfonamides with allylic acetates in the presence of Pd0 catalysts and base at room temperature, direct allylation was efficiently performed, yielding products that are analogues of structural motifs seen in biologically active small molecules. The reaction was performed under mild conditions and could be applied to nanomolar sigma-receptor binders, thus enabling a late-stage functionalisation and efficient expansion of drug-like chemical space.
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Affiliation(s)
- Othman Abdulla
- Department of Chemical Sciences, University of Huddersfield, Queensgate, Huddersfield, HD1 3DH, UK
| | - Adam D Clayton
- Department of Chemical Sciences, University of Huddersfield, Queensgate, Huddersfield, HD1 3DH, UK
| | - Robert A Faulkner
- Department of Chemical Sciences, University of Huddersfield, Queensgate, Huddersfield, HD1 3DH, UK
| | - Duncan M Gill
- Department of Chemical Sciences, University of Huddersfield, Queensgate, Huddersfield, HD1 3DH, UK
| | - Craig R Rice
- Department of Chemical Sciences, University of Huddersfield, Queensgate, Huddersfield, HD1 3DH, UK
| | - Scarlett M Walton
- Department of Chemical Sciences, University of Huddersfield, Queensgate, Huddersfield, HD1 3DH, UK
| | - Joseph B Sweeney
- Department of Chemical Sciences, University of Huddersfield, Queensgate, Huddersfield, HD1 3DH, UK
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18
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Solé D, Pérez-Janer F, García-Rodeja Y, Fernández I. Exploring Partners for the Domino α-Arylation/Michael Addition Reaction Leading to Tetrahydroisoquinolines. European J Org Chem 2017. [DOI: 10.1002/ejoc.201601300] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Daniel Solé
- Laboratori de Química Orgànica; Facultat de Farmàcia; Universitat de Barcelona; Av. Joan XXIII 27-31 08028 Barcelona Spain
| | - Ferran Pérez-Janer
- Laboratori de Química Orgànica; Facultat de Farmàcia; Universitat de Barcelona; Av. Joan XXIII 27-31 08028 Barcelona Spain
| | - Yago García-Rodeja
- Departamento de Química Orgánica I; Facultad de Ciencias Químicas; Universidad Complutense de Madrid; Ciudad Universitaria 28040 Madrid Spain
| | - Israel Fernández
- Departamento de Química Orgánica I; Facultad de Ciencias Químicas; Universidad Complutense de Madrid; Ciudad Universitaria 28040 Madrid Spain
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19
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Yang X, Kim BS, Li M, Walsh PJ. Palladium-Catalyzed Selective α-Alkenylation of Pyridylmethyl Ethers with Vinyl Bromides. Org Lett 2016; 18:2371-4. [PMID: 27160421 DOI: 10.1021/acs.orglett.6b00815] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An efficient palladium-catalyzed α-alkenylation of pyridylmethyl ethers with vinyl bromides is presented. A Pd/NIXANTPHOS-based catalyst system enables a mild and chemoselective coupling between a variety of pyridylmethyl ethers and vinyl bromides in good to excellent yields. Under the mild conditions, β,γ-unsaturated products are obtained without isomerization or Heck byproducts observed.
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Affiliation(s)
- Xiaodong Yang
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, School of Chemical Science and Technology, Yunnan University , Kunming, 650091, P. R. China.,Roy and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania , 231 South 34th Street, Philadelphia, Pennsylvania 19104-6323, United States
| | - Byeong-Seon Kim
- Roy and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania , 231 South 34th Street, Philadelphia, Pennsylvania 19104-6323, United States
| | - Minyan Li
- Roy and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania , 231 South 34th Street, Philadelphia, Pennsylvania 19104-6323, United States
| | - Patrick J Walsh
- Roy and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania , 231 South 34th Street, Philadelphia, Pennsylvania 19104-6323, United States
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