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Bo C, Li M, Chen F, Liu J, Dai B, Liu N. Visible-Light-Initiated Air-Oxygenation of Alkylarenes to Carbonyls Mediated by Carbon Tetrabromide in Water. CHEMSUSCHEM 2024; 17:e202301015. [PMID: 37661194 DOI: 10.1002/cssc.202301015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 08/25/2023] [Accepted: 09/01/2023] [Indexed: 09/05/2023]
Abstract
Synthesizing benzyl skeleton derivatives via direct oxidation of functionalized benzylic C-H bonds has received extensive research attention. Herein, a method was developed to prepare carbonyl compounds via photoinduced aerobic oxidation of ubiquitous benzylic C-H bonds mediated by bromine radicals and tribromomethane radicals. This method employed commercially available CBr4 as a hydrogen atom transfer reagent precursor, air as an oxidant, water as a reaction solvent, and tetrabutylammonium perchlorate (TBAPC) as an additive under mild conditions. A series of substrates bearing different functional groups was converted to aromatic carbonyls in moderate to good yields. Moreover, a low environmental factor (E-factor value=0.45) showed that the proposed method is ecofriendly and environmentally sustainable.
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Affiliation(s)
- Chunbo Bo
- School of Chemistry and Chemical Engineering/State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, Shihezi University, North Fourth Road, Shihezi, Xinjiang, 832003, China
| | - Min Li
- School of Chemistry and Chemical Engineering/State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, Shihezi University, North Fourth Road, Shihezi, Xinjiang, 832003, China
| | - Fei Chen
- School of Chemistry and Chemical Engineering/State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, Shihezi University, North Fourth Road, Shihezi, Xinjiang, 832003, China
| | - Jichang Liu
- School of Chemistry and Chemical Engineering/State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, Shihezi University, North Fourth Road, Shihezi, Xinjiang, 832003, China
| | - Bin Dai
- School of Chemistry and Chemical Engineering/State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, Shihezi University, North Fourth Road, Shihezi, Xinjiang, 832003, China
| | - Ning Liu
- School of Chemistry and Chemical Engineering/State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, Shihezi University, North Fourth Road, Shihezi, Xinjiang, 832003, China
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2
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Weisbrodt M, Kowalczyk A, Schmidt B, Idzik TJ, Sośnicki JG. Functional Acrylic Resins Prepared via Photo-Induced Telomerization Using Tetrabromomethane as Telogen. MATERIALS (BASEL, SWITZERLAND) 2023; 16:7650. [PMID: 38138792 PMCID: PMC10744734 DOI: 10.3390/ma16247650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 12/07/2023] [Accepted: 12/12/2023] [Indexed: 12/24/2023]
Abstract
Novel method of obtaining functional acrylic resins (FARs) containing carboxyl- and benzophenone groups (in-chain functionalization) and terminal Br atoms was verified. Acrylic oligomers were prepared by a solution-free, UV-initiated telomerization process of basic monomer (n-butyl acrylate) and functional monomers (acrylic acid and 4-acrylooxybenzophenone) in the presence of radical photoinitiator and different amount of tetrabromomethane (CBr4) as telogen. The effect of telogen content on UV-telomerization kinetics as well as physicochemical and thermal (Tg) properties of FARs was investigated. A telogen content higher than 5 wt. parts does not affect the UV-telomerization rate (photo-DSC), the molecular weights of telomers (GPC), or their glass transition temperature (DSC), but it significantly increases the conversion of monomers (up to 88%) and lowers the viscosity of FARs (approx. 6 Pa·s). NMR studies confirmed the inclusion of CBr4 in the structure of functional acrylic telomers.
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Affiliation(s)
| | - Agnieszka Kowalczyk
- Department of Chemical Organic Technology and Polymeric Materials, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology in Szczecin, 70-322 Szczecin, Poland; (M.W.); (B.S.); (T.J.I.); (J.G.S.)
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3
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Abstract
A mild bromination of pyrrolo[2,1-a]isoquinolines has been achieved using acetyl bromide and dimethyl sulfoxide. A series of brominated pyrrolo[2,1-a]isoquinolines could be obtained in moderate to excellent yields (46-99%) at room temperature. This strategy can also be expanded to the facile bromination of polysubstituted pyrroles, indoles, electron-rich phenols, aniline, and 2-naphthol.
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Affiliation(s)
- Hai-Lei Cui
- Laboratory of Asymmetric Synthesis, Chongqing University of Arts and Sciences, 319 Honghe Ave., Yongchuan, Chongqing 402160, P. R. China
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4
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Jiang DB, Wu FY, Cui HL. Recent progress in the oxidative bromination of arenes and heteroarenes. Org Biomol Chem 2023; 21:1571-1590. [PMID: 36723168 DOI: 10.1039/d3ob00019b] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Oxidative bromination has been serving as a powerful tool for the synthesis of bromo-containing molecules, as this bromination strategy features environmental friendliness, high flexibility in reaction system design and wide abundance of bromide sources and oxidants. The past decade has witnessed a large number of efficient oxidative bromination reaction systems and novel brominated aromatics. This review summarizes recent developments in the field of oxidative preparation of bromoarenes and bromoheteroarenes covering from 2012 to 2022.
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Affiliation(s)
- Da-Bo Jiang
- Chongqing University of Arts and Sciences, 319 Honghe Ave., Yongchuan, Chongqing, 402160, PR China. .,State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, PR China
| | - Fei-Yue Wu
- Chongqing University of Arts and Sciences, 319 Honghe Ave., Yongchuan, Chongqing, 402160, PR China.
| | - Hai-Lei Cui
- Chongqing University of Arts and Sciences, 319 Honghe Ave., Yongchuan, Chongqing, 402160, PR China.
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5
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Xian C, He J, He Y, Nie J, Yuan Z, Sun J, Martens WN, Qin J, Zhu HY, Zhang Z. High Nitrile Yields of Aerobic Ammoxidation of Alcohols Achieved by Generating •O 2- and Br • Radicals over Iron-Modified TiO 2 Photocatalysts. J Am Chem Soc 2022; 144:23321-23331. [PMID: 36516341 DOI: 10.1021/jacs.2c07061] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Catalytic ammoxidation of alcohols into nitriles is an essential reaction in organic synthesis. While highly desirable, conducting the synthesis at room temperature is challenging, using NH3 as the nitrogen source, O2 as the oxidant, and a catalyst without noble metals. Herein, we report robust photocatalysts consisting of Fe(III)-modified titanium dioxide (Fe/TiO2) for ammoxidation reactions at room temperature utilizing oxygen at atmospheric pressure, NH3 as the nitrogen source, and NH4Br as an additive. To the best of our knowledge, this is the first example of catalytic ammoxidation of alcohols over a photocatalyst using such cheap and benign materials. Various (hetero) aromatic nitriles were synthesized at high yields, and aliphatic alcohols could also be transformed into corresponding nitriles at considerable yields. The modification of TiO2 with Fe(III) facilitates the formation of active •O2- radicals and increases the adsorption of NH3 and amino intermediates on the catalyst, accelerating the ammoxidation to yield nitriles. The additive NH4Br impressively improves the catalytic efficiency via the formation of bromine radicals (Br•) from Br-, which works synergistically with •O2- to capture H• from Cα-H, which is present in benzyl alcohol and the intermediate aldimine (RCH═NH), to generate the active carbon-centered radicals. Further, the generation of Br• from the Br- additive consumes the photogenerated holes and OH• radicals to prevent over-oxidation, significantly improving the selectivity toward nitriles. This amalgamation of function and synergy of the Fe(III)-doped TiO2 and NH4Br reveals new opportunities for developing semiconductor-based photocatalytic systems for fine chemical synthesis.
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Affiliation(s)
- Chensheng Xian
- School of Chemistry and Materials Science, South-Central Minzu University, Wuhan 430074, P. R. China
| | - Jie He
- School of Chemistry and Materials Science, South-Central Minzu University, Wuhan 430074, P. R. China
| | - Yurong He
- School of Chemistry and Materials Science, South-Central Minzu University, Wuhan 430074, P. R. China
| | - Jiabao Nie
- School of Chemistry and Materials Science, South-Central Minzu University, Wuhan 430074, P. R. China
| | - Ziliang Yuan
- School of Chemistry and Materials Science, South-Central Minzu University, Wuhan 430074, P. R. China
| | - Jie Sun
- School of Chemistry and Materials Science, South-Central Minzu University, Wuhan 430074, P. R. China
| | - Wayde N Martens
- School of Chemistry and Physics, Queensland University of Technology, Brisbane, Queensland 4001, Australia
| | - Jingzhong Qin
- School of Chemistry and Materials Science, South-Central Minzu University, Wuhan 430074, P. R. China
| | - Huai-Yong Zhu
- School of Chemistry and Physics, Queensland University of Technology, Brisbane, Queensland 4001, Australia
| | - Zehui Zhang
- School of Chemistry and Materials Science, South-Central Minzu University, Wuhan 430074, P. R. China
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6
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Chen XH, Li WZ, Zhang W, Wang ZD, Cui HL. Modification of Pyrroloisoquinolines with 2‐Bromoketones and Dimethyl Sulfoxide through Bromination. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200342] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Xiao-Hui Chen
- Chongqing University of Arts and Sciences Laboratory of Asymmetric Synthesis CHINA
| | - Wan-Zhen Li
- Chongqing University of Arts and Sciences Laboratory of Asymmetric Synthesis CHINA
| | - Wei Zhang
- Chongqing University of Arts and Sciences Laboratory of Asymmetric Synthesis CHINA
| | - Zhao-Dong Wang
- Chongqing University of Arts and Sciences Key Laboratory of Environmental Materials & Remediation Technologies CHINA
| | - Hai-Lei Cui
- Chongqing University of Arts and Sciences Laboratory of Asymmetric Synthesis 319 Honghe Ave, Yongchuan, Chongqing 402160 Chongqing CHINA
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Romano C, Talavera L, Gómez-Bengoa E, Martin R. Conformational Flexibility as a Tool for Enabling Site-Selective Functionalization of Unactivated sp3 C-O Bonds in Cyclic Acetals. J Am Chem Soc 2022; 144:11558-11563. [PMID: 35749319 PMCID: PMC9264358 DOI: 10.1021/jacs.2c04513] [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] [Indexed: 11/30/2022]
Abstract
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A dual catalytic
manifold that enables site-selective functionalization
of unactivated sp3 C–O
bonds in cyclic acetals with aryl and alkyl halides is reported. The
reaction is triggered by an appropriate σ*–p orbital
overlap prior to sp3 C–O
cleavage, thus highlighting the importance of conformational flexibility
in both reactivity and site selectivity. The protocol is characterized
by its excellent chemoselectivity profile, thus offering new vistas
for activating strong σ sp3 C–O linkages.
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Affiliation(s)
- Ciro Romano
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain
| | - Laura Talavera
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain.,Departament de Química Analítica i Química Orgànica, Universitat Rovira i Virgili, c/Marcel·lí Domingo, 1, 43007 Tarragona, Spain
| | - Enrique Gómez-Bengoa
- Department of Organic Chemistry I, Universidad País Vasco, UPV/EHU, Apdo. 1072, 20080, San Sebastian, Spain
| | - Ruben Martin
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain.,ICREA, Passeig Lluís Companys, 23, 08010 Barcelona, Spain
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8
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He X, Yao X, Cai SF, Li HR, He LN. Visible light-driven carbamoyloxylation of the α-C(sp 3)-H bond of arylacetones via radical-initiated hydrogen atom transfer. Chem Commun (Camb) 2022; 58:5845-5848. [PMID: 35466975 DOI: 10.1039/d2cc01761j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Photocatalytic synthesis has emerged as an efficient route to transform CO2 into functionalized organic carbamates by photocatalysis. Herein, a catalyst-free carbamoyloxylation of arylacetones with CO2 and amines under visible light was developed for the synthesis of O-β-oxoalkyl carbamates in yields up to 93%. This protocol proceeded smoothly with the assistance of inexpensive carbon tetrabromide at room temperature under atmospheric CO2 pressure, leading to simultaneous construction of C-O and C-N bonds. Mechanism studies suggested the photoinduced hydrogen atom transfer (HAT) pathway followed by radical addition or single electron transfer (SET).
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Affiliation(s)
- Xing He
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, P. R. China. .,Henan Engineering Research Centre of Chiral Hydroxyl Pharmaceutical, Henan Engineering Laboratory of Chemical Pharmaceutical and Biomedical Materials, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, P. R. China
| | - Xiangyang Yao
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, P. R. China.
| | - Shuai-Fang Cai
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, P. R. China; College of Pharmacy, Nankai University, Tianjin 300353, P. R. China
| | - Hong-Ru Li
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, P. R. China. .,State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, P. R. China; College of Pharmacy, Nankai University, Tianjin 300353, P. R. China
| | - Liang-Nian He
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, P. R. China.
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9
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Kim KS, Kim DY. Electrochemical bromolactonization of alkenoic acids with carbon tetrabromide: Synthesis of bromomethylated γ-lactones. SYNTHETIC COMMUN 2022. [DOI: 10.1080/00397911.2022.2028843] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Kyeong Seop Kim
- Department of Chemistry and ICT Environmental Health System, Soonchunhyang University, Asan, South Korea
| | - Dae Young Kim
- Department of Chemistry and ICT Environmental Health System, Soonchunhyang University, Asan, South Korea
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10
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Li JQ, Chen XH, Wang XX, Cui HL. Bromination of phenyl ether and other aromatics with bromoisobutyrate and dimethyl sulfoxide. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.153375] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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11
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Harada S, Masuda R, Morikawa T, Nishida A. Trichloromethylative Olefin Cycloamination by Photoredox Catalysis. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100898] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Shinji Harada
- Graduate School of Pharmaceutical Sciences Chiba University 1-8-1 Inohana Chuo-ku, Chiba 2608675 Japan
- Molecular Chirality Research Center Chiba University 1-33 Yayoi-cho Inage-ku, Chiba 2638522 Japan
| | - Ryuya Masuda
- Graduate School of Pharmaceutical Sciences Chiba University 1-8-1 Inohana Chuo-ku, Chiba 2608675 Japan
| | - Takahiro Morikawa
- Graduate School of Pharmaceutical Sciences Chiba University 1-8-1 Inohana Chuo-ku, Chiba 2608675 Japan
| | - Atsushi Nishida
- Graduate School of Pharmaceutical Sciences Chiba University 1-8-1 Inohana Chuo-ku, Chiba 2608675 Japan
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12
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Ren S, Cheng D, Li X, Xu X. Mild oxidation of benzyl alcohols to benzyl aldehydes or ketones catalyzed by visible light. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.153234] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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13
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Bromine radical as a visible-light-mediated polarity-reversal catalyst. iScience 2021; 24:102693. [PMID: 34222843 PMCID: PMC8243021 DOI: 10.1016/j.isci.2021.102693] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 05/12/2021] [Accepted: 06/03/2021] [Indexed: 11/28/2022] Open
Abstract
Polarity-reversal catalysts enable otherwise sluggish or completely ineffective reactions which are characterized by unfavorable polar effects between radicals and substrates. We herein disclose that when irradiated by visible light, bromine can behave as a polarity-reversal catalyst. Hydroacylation of vinyl arenes, a three-component cascade transformation and deuteration of aldehydes were each achieved in a metal-free manner without initiators by using inexpensive N-bromosuccinimide as the precatalyst. Light is essential to generate and maintain the active bromine radical during the reaction process. Another key to success is that HBr can behave as an effective hydrogen donor to turn over the catalytic cycles. Using bromine as a polarity-reversal catalyst to generate acyl radicals Additive- and metal-free, atom- and step-economic, and operationally simple process Using constant light-irradiation to induce and maintain bromine radicals Access carbonyl compounds and deuterated aldehydes with wide substrate scope
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14
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Kumar S, Shah TA, Punniyamurthy T. Recent advances in the application of tetrabromomethane in organic synthesis. Org Chem Front 2021. [DOI: 10.1039/d0qo01369b] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
This review article covers the use of tetrabromomethane as mediator, catalyst and reagents for organic synthesis for the period from 2007 to 2020.
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Affiliation(s)
- Sandeep Kumar
- Department of Chemistry
- DAV University
- Jalandhar-144012
- India
| | - Tariq A. Shah
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Guwahati-781039
- India
- Department of Chemistry
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