1
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Vuagnat M, Jubault P, Besset T. Sequential ortho-/ meta-C-H functionalizations of N-tosyl-benzamides for the synthesis of polyfunctionalized arenes. Chem Commun (Camb) 2024; 60:2244-2247. [PMID: 38317563 DOI: 10.1039/d3cc05919g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2024]
Abstract
Selective one-pot sequential ortho-/meta-C-H functionalizations provided highly desirable polyfunctionalized arenes. Starting from readily available carboxylic acid derivatives, the concomitant formation of C-O and C-halogen bonds was achieved under mild reaction conditions (12 examples, up to 75% yield). The utility of the products was illustrated with post-functionalization reactions and Metiglinid synthesis.
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Affiliation(s)
- Martin Vuagnat
- INSA Rouen Normandie, Univ Rouen Normandie, CNRS, Normandie Univ, COBRA UMR 6014, Rouen F-76000, France.
| | - Philippe Jubault
- INSA Rouen Normandie, Univ Rouen Normandie, CNRS, Normandie Univ, COBRA UMR 6014, Rouen F-76000, France.
| | - Tatiana Besset
- INSA Rouen Normandie, Univ Rouen Normandie, CNRS, Normandie Univ, COBRA UMR 6014, Rouen F-76000, France.
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2
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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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3
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Sharp-Bucknall L, Tania, Sceney M, Barwise L, Dutton JL. Electrophilic activation of molecular bromine mediated by I(III). Dalton Trans 2023; 52:16472-16479. [PMID: 37873647 DOI: 10.1039/d3dt02999a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2023]
Abstract
In pursuit of a genuine bromo-λ3-iodane, it has been found that the combination of Br2 and electron deficient λ3-iodanes can result in the delivery of both bromine atoms from Br2 to a range of aryl substrates, some highly deactivated. These brominations occur rapidly in common chlorinated solvents at room temperature and can be achieved with the catalytic activation of commercially available PhI(OAc)2 and PhI(OTFA)2. para-NO2 substituted derivatives are employed to direct bromination towards more deactivated substrates. The mechanism of Br2 activation is discussed with insights being made, however it remains unclear.
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Affiliation(s)
- Lachlan Sharp-Bucknall
- Department of Biochemistry and Chemistry, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria, Australia.
| | - Tania
- Department of Biochemistry and Chemistry, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria, Australia.
| | - Marcus Sceney
- Department of Biochemistry and Chemistry, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria, Australia.
| | - Lachlan Barwise
- Department of Biochemistry and Chemistry, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria, Australia.
| | - Jason L Dutton
- Department of Biochemistry and Chemistry, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria, Australia.
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4
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Li B, Hu M, Ge J, Xu W, Wu J, Tong Y, Zhao Z, Liu X, He L. Regioselective C-H chalcogenylation and halogenation of arenes and alkenes under metal-free conditions. Org Biomol Chem 2023; 21:2910-2916. [PMID: 36942676 DOI: 10.1039/d3ob00150d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/23/2023]
Abstract
The reactions of direct Csp2-H chalcogenylation and halogenation of N-arylpyrrolidone under the action of PIFA without a directing group and under metal-free conditions were reported in this paper. Diphenyl selenide/sulfur and selenium phenyl halides were used as reaction reagents to obtain chalcogenylated and halogenated N-arylpyrrolidone products, respectively. The mechanistic studies indicated that a radical pathway was likely involved in these reactions. Preliminary antitumor tests showed that these compounds have moderate to potent activities against human acute leukemia cells K562 in vitro, which may be used as lead compounds for subsequent research.
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Affiliation(s)
- Bin Li
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, Department of Medicinal Chemistry, West China School of Pharmacy, Sichuan University, Chengdu, Sichuan, 610041, P. R. China.
| | - Mingli Hu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, Department of Medicinal Chemistry, West China School of Pharmacy, Sichuan University, Chengdu, Sichuan, 610041, P. R. China.
| | - Jun Ge
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, Department of Medicinal Chemistry, West China School of Pharmacy, Sichuan University, Chengdu, Sichuan, 610041, P. R. China.
| | - Wei Xu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, Department of Medicinal Chemistry, West China School of Pharmacy, Sichuan University, Chengdu, Sichuan, 610041, P. R. China.
| | - Jinghan Wu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, Department of Medicinal Chemistry, West China School of Pharmacy, Sichuan University, Chengdu, Sichuan, 610041, P. R. China.
| | - Yao Tong
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, Department of Medicinal Chemistry, West China School of Pharmacy, Sichuan University, Chengdu, Sichuan, 610041, P. R. China.
| | - Zhengyi Zhao
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, Department of Medicinal Chemistry, West China School of Pharmacy, Sichuan University, Chengdu, Sichuan, 610041, P. R. China.
| | - Xiuxiu Liu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, Department of Medicinal Chemistry, West China School of Pharmacy, Sichuan University, Chengdu, Sichuan, 610041, P. R. China.
| | - Ling He
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, Department of Medicinal Chemistry, West China School of Pharmacy, Sichuan University, Chengdu, Sichuan, 610041, P. R. China.
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5
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Bo C, Chen F, Bu Q, Du ZH, Li M, Dai B, Liu N. Visible-Light-Driven Organocatalytic Alkoxylation of Benzylic C-H Bonds. J Org Chem 2023; 88:3532-3538. [PMID: 36881000 DOI: 10.1021/acs.joc.2c02743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2023]
Abstract
A variety of strategies for direct alkoxylation of the benzyl C-H bond have been developed toward the construction of benzyl ethers. The light-induced benzyl C-H bond alkoxylation provides an alternative strategy for the synthesis of these important intermediates. The photocatalyzed alkoxylation of the benzyl C-H bond has dominated by metal-catalyzed methods. Herein, we reported a light-driven organocatalytic approach for alkoxylation of the benzyl C-H bond by the use of 9,10-dibromoanthracene as a photocatalyst and employing N-fluorobenzenesulfonimide as an oxidant. This reaction proceeds at room temperature and is capable of converting a variety of alkyl biphenyl and coupling partners, including a variety of alcohol and carboxylic acid, as well as peroxide, to the desired products under 400 nm light irradiation.
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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
| | - 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
| | - Qingqing Bu
- 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
| | - Zhi-Hong Du
- 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
| | - 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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6
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Wang ZC, Wang Y, Huang LY, Liao XJ, Jiang ZH, Xu SH, Zhao BX. Two new halogenated metabolites from the red alga Laurencia sp. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2023; 25:61-67. [PMID: 35352584 DOI: 10.1080/10286020.2022.2056029] [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: 01/23/2022] [Revised: 03/16/2022] [Accepted: 03/16/2022] [Indexed: 06/14/2023]
Abstract
Two new halogenated metabolites, laurenhalogens A (1) and B (2), along with four known ones (3-6), were isolated from the red alga Laurencia sp. The structures of 1 and 2 were determined by the means of UV, IR, MS, NMR and X-ray diffraction analysis. In addition, the antibacterial activities of 1-6 were also evaluated.
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Affiliation(s)
- Zhao-Cong Wang
- Department of Chemistry, College of Chemistry and Materials Science, Jinan University, Guangzhou 511400, China
| | - Yan Wang
- Department of Pharmacy, Guangzhou General Hospital of Guangzhou Military Command, Guangzhou 510010, China
- School of pharmaceutical sciences, Southern Medical University, Guangzhou 510515, China
| | - Li-Ying Huang
- Department of Chemistry, College of Chemistry and Materials Science, Jinan University, Guangzhou 511400, China
| | - Xiao-Jian Liao
- Department of Chemistry, College of Chemistry and Materials Science, Jinan University, Guangzhou 511400, China
| | - Zhi-Hui Jiang
- Department of Pharmacy, Guangzhou General Hospital of Guangzhou Military Command, Guangzhou 510010, China
| | - Shi-Hai Xu
- Department of Chemistry, College of Chemistry and Materials Science, Jinan University, Guangzhou 511400, China
| | - Bing-Xin Zhao
- Department of Chemistry, College of Chemistry and Materials Science, Jinan University, Guangzhou 511400, China
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7
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Lichte D, Pirkl N, Heinrich G, Dutta S, Goebel JF, Koley D, Gooßen LJ. Palladium-Catalyzed para-C-H Arylation of Anilines with Aromatic Halides. Angew Chem Int Ed Engl 2022; 61:e202210009. [PMID: 36112053 PMCID: PMC9828783 DOI: 10.1002/anie.202210009] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Indexed: 01/12/2023]
Abstract
Controlling regioselectivity in C-H functionalizations is a key challenge in chemical method development. In arenes, functionalizations are most difficult to direct towards the C-H group furthest away from a substituent, in its para position. We herein demonstrate how the para-C-H arylation of anilines with non-activated aryl halides, elusive to date, is achieved by a base-assisted "metalla-tautomerism" approach. A proton is abstracted from the aniline substrate and replaced by an arylpalladium species, generated from the aryl halide coupling partner. In this step, the palladium is directed away from the N- to the tautomeric para-C-H position by a large phosphine ligand combined with a triphenylmethyl shielding group. The triphenylmethyl group is easily installed and removed, and can be recycled.
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Affiliation(s)
- Dominik Lichte
- Fakultät für Chemie und BiochemieRuhr-Universität BochumUniversitätsstraße 15044801BochumGermany
| | - Nico Pirkl
- Fakultät für Chemie und BiochemieRuhr-Universität BochumUniversitätsstraße 15044801BochumGermany
| | - Gregor Heinrich
- Fakultät für Chemie und BiochemieRuhr-Universität BochumUniversitätsstraße 15044801BochumGermany
| | - Sayan Dutta
- Department of Chemical SciencesIndian Institute of Science Education and Research (IISER)Kolkata, Mohanpur 741 246India
| | - Jonas F. Goebel
- Fakultät für Chemie und BiochemieRuhr-Universität BochumUniversitätsstraße 15044801BochumGermany
| | - Debasis Koley
- Department of Chemical SciencesIndian Institute of Science Education and Research (IISER)Kolkata, Mohanpur 741 246India
| | - Lukas J. Gooßen
- Fakultät für Chemie und BiochemieRuhr-Universität BochumUniversitätsstraße 15044801BochumGermany
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8
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Segura-Quezada LA, Torres-Carbajal KR, Juárez-Ornelas KA, Alonso-Castro AJ, Ortiz-Alvarado R, Dohi T, Solorio-Alvarado CR. Iodine(III) reagents for oxidative aromatic halogenation. Org Biomol Chem 2022; 20:5009-5034. [PMID: 35703407 DOI: 10.1039/d2ob00741j] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Iodine(III) reagents have attracted chemical relvance in organic synthesis by their use as safe, non-toxic, green and easy to handle reagents in different transformations. These characteristics make them important alternatives to procedures involving hazardous and harsh reaction conditions. Their versatility as oxidants has been exploited in the functionalization of different aromatic cores, which allow the introduction of several groups. Metal-free arylation using iodine(III) reagents is by far one of the most described topics in the literature; however, other highly relevant non-aromatic groups have been also introduced. Herein, we summarize the most representative developed procedures for the functionalization of aryls and heteroaryls by introducing halogens, using different iodine(III) reagents.
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Affiliation(s)
- Luis A Segura-Quezada
- Universidad de Guanajuato, Departamento de Química, División de Ciencias Naturales y Exactas, Campus Guanajuato, Cerro de la Venada S/N, 36040, Guanajuato, Gto., Mexico.
| | - Karina R Torres-Carbajal
- Universidad de Guanajuato, Departamento de Química, División de Ciencias Naturales y Exactas, Campus Guanajuato, Cerro de la Venada S/N, 36040, Guanajuato, Gto., Mexico.
| | - Kevin A Juárez-Ornelas
- Universidad de Guanajuato, Departamento de Química, División de Ciencias Naturales y Exactas, Campus Guanajuato, Cerro de la Venada S/N, 36040, Guanajuato, Gto., Mexico.
| | - Angel J Alonso-Castro
- Universidad de Guanajuato, Departamento de Química, División de Ciencias Naturales y Exactas, Campus Guanajuato, Cerro de la Venada S/N, 36040, Guanajuato, Gto., Mexico.
| | - Rafael Ortiz-Alvarado
- Universidad Michoacana de San Nicolás de Hidalgo, Facultad de Químico Farmacobiología, Tzintzuntzan 173, col. Matamoros, Morelia, Mich., Mexico.
| | - Toshifumi Dohi
- College of Pharmaceutical Sciences, Ritsumeikan University, 1-1-1, Nojihigashi, Kusatsu Shiga, 525-8577, Japan.
| | - César R Solorio-Alvarado
- Universidad de Guanajuato, Departamento de Química, División de Ciencias Naturales y Exactas, Campus Guanajuato, Cerro de la Venada S/N, 36040, Guanajuato, Gto., Mexico.
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9
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Visible-light-enabled ruthenium-catalyzed para-C−H difluoroalkylation of anilides. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.06.048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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10
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Jin L, Zeng X, Li S, Qiu G, Liu P. Copper‐Catalyzed Regioselective Halogenation of Anilides with N‐Fluorobenzenesulfonimide. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200399] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Lianwen Jin
- Wuhan University School of Pharmaceutical Sciences CHINA
| | - Xiaoli Zeng
- Wuhan University School of Pharmaceutical Sciences CHINA
| | - Siyang Li
- Wuhan University School of Pharmaceutical Sciences CHINA
| | - Guofu Qiu
- Wuhan University School of Pharmaceutical Sciences CHINA
| | - Peng Liu
- Wuhan University School of Pharmaceutical Sciences donghu road 185 430071 Wuhan CHINA
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11
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Cui P, Mu Y, Gao H, Guo R, Kong L, Cui C. Bulky lithium amides for para-elementation of secondary m-terphenylamines. J Organomet Chem 2022. [DOI: 10.1016/j.jorganchem.2021.122205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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12
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Tian H, Yang S, Wang X, Xu W, Liu Y, Li Y, Wang Q. Dehalogenative Cross-Coupling of gem-Difluoroalkenes with Alkyl Halides via a Silyl Radical-Mediated Process. J Org Chem 2021; 86:12772-12782. [PMID: 34459192 DOI: 10.1021/acs.joc.1c01363] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Herein, we describe a convenient general protocol for monofluoroalkenylation reactions of alkyl bromides involving cooperative visible-light photoredox catalysis and halogen abstraction. Mechanistic experiments showed that the products were generated by selective cross-coupling of aliphatic radicals with fluoroalkenyl radicals. Silyl radical-mediated halogen abstraction enabled the protocol to be used for the monofluoroalkenylation of a broad range of alkyl and heteroaryl halides. The protocol could be carried out on a gram scale and was applied to cholesterol, indicating its utility for late-stage monofluoroalkenylation reactions.
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Affiliation(s)
- Hao Tian
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Frontiers Science Center for New Organic Matter, Nankai University, Tianjin 300071, People's Republic of China
| | - Shaoxiang Yang
- Beijing Key Laboratory of Flavor Chemistry, Beijing Technology and Business University, Beijing 100048, People's Republic of China
| | - Xiaochen Wang
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Frontiers Science Center for New Organic Matter, Nankai University, Tianjin 300071, People's Republic of China
| | - Wentao Xu
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Frontiers Science Center for New Organic Matter, Nankai University, Tianjin 300071, People's Republic of China
| | - Yuxiu Liu
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Frontiers Science Center for New Organic Matter, Nankai University, Tianjin 300071, People's Republic of China
| | - Yongqiang Li
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Frontiers Science Center for New Organic Matter, Nankai University, Tianjin 300071, People's Republic of China
| | - Qingmin Wang
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Frontiers Science Center for New Organic Matter, Nankai University, Tianjin 300071, People's Republic of China
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13
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Jiang Y, Li B, Ma N, Shu S, Chen Y, Yang S, Huang Z, Shi D, Zhao Y. Photoredox‐Catalyst‐Enabled
para
‐Selective Trifluoromethylation of
tert
‐Butyl Arylcarbamates. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202105631] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Yaqiqi Jiang
- Key Laboratory of Organic Synthesis of Jiangsu Province College of Chemistry Chemical Engineering and Materials Science, Soochow University Suzhou 215123 P. R. China
- School of Chemistry and Chemical Engineering Henan Normal University Xinxiang 453000 P. R. China
| | - Bao Li
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals Key Laboratory of Green Chemical Media and Reactions Ministry of Education School of Chemistry and Chemical Engineering Henan Normal University Xinxiang 453000 P. R. China
| | - Nana Ma
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals Key Laboratory of Green Chemical Media and Reactions Ministry of Education School of Chemistry and Chemical Engineering Henan Normal University Xinxiang 453000 P. R. China
| | - Sai Shu
- Key Laboratory of Organic Synthesis of Jiangsu Province College of Chemistry Chemical Engineering and Materials Science, Soochow University Suzhou 215123 P. R. China
- School of Chemistry and Chemical Engineering Henan Normal University Xinxiang 453000 P. R. China
| | - Yujie Chen
- Key Laboratory of Organic Synthesis of Jiangsu Province College of Chemistry Chemical Engineering and Materials Science, Soochow University Suzhou 215123 P. R. China
- School of Chemistry and Chemical Engineering Henan Normal University Xinxiang 453000 P. R. China
| | - Shan Yang
- Key Laboratory of Organic Synthesis of Jiangsu Province College of Chemistry Chemical Engineering and Materials Science, Soochow University Suzhou 215123 P. R. China
- School of Chemistry and Chemical Engineering Henan Normal University Xinxiang 453000 P. R. China
| | - Zhibin Huang
- Key Laboratory of Organic Synthesis of Jiangsu Province College of Chemistry Chemical Engineering and Materials Science, Soochow University Suzhou 215123 P. R. China
- School of Chemistry and Chemical Engineering Henan Normal University Xinxiang 453000 P. R. China
| | - Daqing Shi
- Key Laboratory of Organic Synthesis of Jiangsu Province College of Chemistry Chemical Engineering and Materials Science, Soochow University Suzhou 215123 P. R. China
- School of Chemistry and Chemical Engineering Henan Normal University Xinxiang 453000 P. R. China
| | - Yingsheng Zhao
- Key Laboratory of Organic Synthesis of Jiangsu Province College of Chemistry Chemical Engineering and Materials Science, Soochow University Suzhou 215123 P. R. China
- School of Chemistry and Chemical Engineering Henan Normal University Xinxiang 453000 P. R. China
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14
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Jiang Y, Li B, Ma N, Shu S, Chen Y, Yang S, Huang Z, Shi D, Zhao Y. Photoredox-Catalyst-Enabled para-Selective Trifluoromethylation of tert-Butyl Arylcarbamates. Angew Chem Int Ed Engl 2021; 60:19030-19034. [PMID: 34160867 DOI: 10.1002/anie.202105631] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 06/22/2021] [Indexed: 01/26/2023]
Abstract
The direct incorporation of a trifluoromethyl group on an aromatic ring using a radical pathway has been extensively investigated. However, the direct highly para-selective C-H trifluoromethylation of a class of arenes has not been achieved. In this study, we report a light-promoted 4,5-dichlorofluorescein (DCFS)-enabled para-selective C-H trifluoromethylation of arylcarbamates using Langlois reagent. The preliminary mechanistic study revealed that the activated organic photocatalyst coordinated with the arylcarbamate led to para-selective C-H trifluoromethylation. Ten-gram scale reaction performs well highlighting the synthetic importance of this new protocol.
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Affiliation(s)
- Yaqiqi Jiang
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P. R. China.,School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, 453000, P. R. China
| | - Bao Li
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, 453000, P. R. China
| | - Nana Ma
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, 453000, P. R. China
| | - Sai Shu
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P. R. China.,School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, 453000, P. R. China
| | - Yujie Chen
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P. R. China.,School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, 453000, P. R. China
| | - Shan Yang
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P. R. China.,School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, 453000, P. R. China
| | - Zhibin Huang
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P. R. China.,School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, 453000, P. R. China
| | - Daqing Shi
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P. R. China.,School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, 453000, P. R. China
| | - Yingsheng Zhao
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P. R. China.,School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, 453000, P. R. China
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15
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Gao QS, Niu Z, Chen Y, Sun J, Han WY, Wang JY, Yu M, Zhou MD. Photoredox Generation of N-Centered Hydrazonyl Radicals Enables the Construction of Dihydropyrazole-Fused gem-Difluoroalkenes. Org Lett 2021; 23:6153-6157. [PMID: 34269587 DOI: 10.1021/acs.orglett.1c02275] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An efficient visible-light-promoted N-radical-mediated tandem radical cyclization/defluorinated alkylation of β,γ-unsaturated hydrazones, and α-trifluoromethyl alkenes is described. This protocol provides a general and effective route to synthesize various dihydropyrazole-fused gem-difluoroalkenes at moderate to excellent yields under redox-neutral, metal-free, and mild conditions.
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Affiliation(s)
- Qi-Sheng Gao
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, China
| | - Zhuo Niu
- Department of Surgical Oncology and General Surgery, The First Hospital of China Medical University; Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors (China Medical University), Ministry of Education, Shenyang 110001, China
| | - Yang Chen
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, China
| | - Jing Sun
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, China
| | - Wei-Ying Han
- Department of Surgical Oncology and General Surgery, The First Hospital of China Medical University; Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors (China Medical University), Ministry of Education, Shenyang 110001, China
| | - Jing-Yun Wang
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, China
| | - Miao Yu
- Department of Surgical Oncology and General Surgery, The First Hospital of China Medical University; Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors (China Medical University), Ministry of Education, Shenyang 110001, China
| | - Ming-Dong Zhou
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, China
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16
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Abstract
C-X (X = halogen) bonds are indispensable functional groups in organic synthesis
by mediating a massive number of important organic reactions. While a variety of different
catalytic strategies are available for generating C-X bonds, those methods enabling the C-X
bond formation under transition metal-free conditions via the C-H bond functionalization are
particularly interesting because of the inherent atom economy and environmental friendliness
associated with such methods. Herein, the advancements in the transition metal-free halogenation
of C(2)-H bond are reviewed.
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Affiliation(s)
- Tian Luo
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China
| | - Shanghui Tian
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China
| | - Jie-Ping Wan
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China
| | - Yunyun Liu
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China
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17
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Gao B, Ni Y, Liu X, Jiang T, Yan Q, Yang R, Zhang X. Copper‐Catalyzed Difluoroalkylation‐Thiolation of Alkenes Promoted by Na
2
S
2
O
5. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100091] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Bao Gao
- Department of Applied Chemistry Anhui Agricultural University Hefei 230036 People's Republic of China
| | - Yingjie Ni
- Department of Applied Chemistry Anhui Agricultural University Hefei 230036 People's Republic of China
| | - Xiaojun Liu
- Department of Applied Chemistry Anhui Agricultural University Hefei 230036 People's Republic of China
| | - Tao Jiang
- Department of Applied Chemistry Anhui Agricultural University Hefei 230036 People's Republic of China
| | - Qian Yan
- Department of Applied Chemistry Anhui Agricultural University Hefei 230036 People's Republic of China
| | - Ruiting Yang
- Department of Applied Chemistry Anhui Agricultural University Hefei 230036 People's Republic of China
| | - Xiuli Zhang
- Department of Applied Chemistry Anhui Agricultural University Hefei 230036 People's Republic of China
- State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry Shanghai 200032 PR China
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18
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Schofield K, Foley C, Hulme C. 5- Endo Trig Oxidative Radical Cyclizations of Ugi-3CR Products toward 1,4-Imidazolidinones. Org Lett 2020; 23:107-112. [PMID: 33306404 DOI: 10.1021/acs.orglett.0c03785] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
A 5-endo trig oxidative radical cyclization of benzylamine-derived Ugi three-component reaction products rapidly affords imidazolidinones with three diversity elements. This adaptation of our previously described multicomponent reaction-oxidation methodology further showcases manipulation of the diversity elements in multicomponent reaction products via oxidative radical cyclizations, which generates highly decorated privileged heterocycles.
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Affiliation(s)
- Kevin Schofield
- Department of Chemistry and Biochemistry, College of Science, The University of Arizona, Tucson, Arizona 85721, United States
| | - Christopher Foley
- Department of Chemistry and Biochemistry, College of Science, The University of Arizona, Tucson, Arizona 85721, United States
| | - Christopher Hulme
- Department of Chemistry and Biochemistry, College of Science, The University of Arizona, Tucson, Arizona 85721, United States.,Department of Pharmacology and Toxicology, College of Pharmacy, The University of Arizona, Tucson, Arizona 85721, United States
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19
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Du HW, Chen Y, Sun J, Gao QS, Wang H, Zhou MD. Synthesis of gem-Difluoroalkenes via Zn-Mediated Decarboxylative/Defluorinative Cross-Coupling. Org Lett 2020; 22:9342-9345. [DOI: 10.1021/acs.orglett.0c03554] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Hai-Wu Du
- School of Chemistry and Materials Science, Liaoning Shihua University, Fushun 113001, P. R. China
| | - Yang Chen
- School of Chemistry and Materials Science, Liaoning Shihua University, Fushun 113001, P. R. China
| | - Jing Sun
- School of Chemistry and Materials Science, Liaoning Shihua University, Fushun 113001, P. R. China
| | - Qi-Sheng Gao
- School of Chemistry and Materials Science, Liaoning Shihua University, Fushun 113001, P. R. China
| | - He Wang
- School of Chemistry and Materials Science, Liaoning Shihua University, Fushun 113001, P. R. China
| | - Ming-Dong Zhou
- School of Chemistry and Materials Science, Liaoning Shihua University, Fushun 113001, P. R. China
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20
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Yao Y, Lin Q, Yang W, Yang W, Gu F, Guo W, Yang D. Cobalt(II)-Catalyzed [4+2] Annulation of Picolinamides with Alkynes via C-H Bond Activation. Chemistry 2020; 26:5607-5610. [PMID: 32045038 DOI: 10.1002/chem.202000411] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Revised: 02/06/2020] [Indexed: 11/08/2022]
Abstract
A cobalt(II)-catalyzed [4+2] annulation of picolinamides with alkynes via C-H bond activation has been developed. The operationally simple annulation reaction allows for the synthesis of acyl-substituted 1H-benzoquinoline bearing multiple aromatic rings (up to 96 % yield) without co-oxidant or other oxidation factors under mild conditions. Several control experiments were carried out. This practical [4+2] annulation provides an efficient route to access highly functionalized compounds.
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Affiliation(s)
- Yongqi Yao
- Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education, School of Chemistry, South China, Normal University, Guangzhou, 510006, P. R. China
| | - Qifu Lin
- Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education, School of Chemistry, South China, Normal University, Guangzhou, 510006, P. R. China
| | - Wen Yang
- Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education, School of Chemistry, South China, Normal University, Guangzhou, 510006, P. R. China
| | - Weitao Yang
- Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education, School of Chemistry, South China, Normal University, Guangzhou, 510006, P. R. China
| | - Fenglong Gu
- Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education, School of Chemistry, South China, Normal University, Guangzhou, 510006, P. R. China
| | - Wei Guo
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou, 341000, P. R. China
| | - Dingqiao Yang
- Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education, School of Chemistry, South China, Normal University, Guangzhou, 510006, P. R. China
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21
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Affiliation(s)
- Quan Zheng
- College of Pharmaceutical Science and Institute of Drug Development & Chemical BiologyZhejiang University of Technology Hangzhou 310014 People's Republic of China
| | - Chen‐Fu Liu
- College of Pharmaceutical ScienceGannan Medical University Ganzhou 341000 People's Republic of China
| | - Jie Chen
- College of Pharmaceutical Science and Institute of Drug Development & Chemical BiologyZhejiang University of Technology Hangzhou 310014 People's Republic of China
| | - Guo‐Wu Rao
- College of Pharmaceutical Science and Institute of Drug Development & Chemical BiologyZhejiang University of Technology Hangzhou 310014 People's Republic of China
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22
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Chen XY, Nie XX, Wu Y, Wang P. para-Selective arylation and alkenylation of monosubstituted arenes using thianthrene S-oxide as a transient mediator. Chem Commun (Camb) 2020; 56:5058-5061. [PMID: 32249278 DOI: 10.1039/d0cc00641f] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Using thianthrene S-oxide (TTSO) as a transient mediator, para-arylation and alkenylation of mono-substituted arenes have been demonstrated via a para-selective thianthrenation/Pd-catalyzed thio-Suzuki-Miyaura coupling sequence under mild conditions. This reaction features a broad substrate scope, and functional group and heterocycle tolerance. The versatility of this approach was further demonstrated by late-stage functionalization of complex bioactive scaffolds, and direct synthesis of some pharmaceuticals, including Tetriprofen, Ibuprofen, Bifonazole, and LJ570.
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Affiliation(s)
- Xiao-Yue Chen
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, CAS 345 Lingling Road, Shanghai 200032, P. R. China.
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23
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Li X, Zhang C, Wang C, Ye W, Zhang Q, Zhang Z, Su J, Chen Y, Tian H. Modular synthesis of (C-10 to C-13)-substituted-9,14-diaryl-9,14-dihydrodibenzo[a,c]phenazines via a subsequent Buchwald-Hartwig amination and C-H amination strategy. Chem Commun (Camb) 2020; 56:2260-2263. [PMID: 31984387 DOI: 10.1039/c9cc09997b] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Herein, we report a modular synthetic approach of (C-10 to C-13)-substituted 9,14-diaryl-9,14-dihydrodibenzo[a,c]phenazine derivatives. This synthetic route enables the aromatic substitution in a predictable and programmed manner to obtain products in synthetically useful isolated yield.
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Affiliation(s)
- Xiaobin Li
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, School of Chemistry and Molecular Engineering, East China University of Science & Technology, 130 Meilong Road, Shanghai, 200237, China.
| | - Chengxi Zhang
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, School of Chemistry and Molecular Engineering, East China University of Science & Technology, 130 Meilong Road, Shanghai, 200237, China.
| | - Chenchen Wang
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, School of Chemistry and Molecular Engineering, East China University of Science & Technology, 130 Meilong Road, Shanghai, 200237, China.
| | - Wenqiang Ye
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, School of Chemistry and Molecular Engineering, East China University of Science & Technology, 130 Meilong Road, Shanghai, 200237, China.
| | - Qian Zhang
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, School of Chemistry and Molecular Engineering, East China University of Science & Technology, 130 Meilong Road, Shanghai, 200237, China.
| | - Zhiyun Zhang
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, School of Chemistry and Molecular Engineering, East China University of Science & Technology, 130 Meilong Road, Shanghai, 200237, China.
| | - Jianhua Su
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, School of Chemistry and Molecular Engineering, East China University of Science & Technology, 130 Meilong Road, Shanghai, 200237, China.
| | - Yifeng Chen
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, School of Chemistry and Molecular Engineering, East China University of Science & Technology, 130 Meilong Road, Shanghai, 200237, China.
| | - He Tian
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, School of Chemistry and Molecular Engineering, East China University of Science & Technology, 130 Meilong Road, Shanghai, 200237, China.
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24
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Mudithanapelli C, Kim MH. Metal-free late-stage C(sp 2)-H functionalization of N-aryl amines with various sodium salts. Org Biomol Chem 2020; 18:450-464. [PMID: 31799581 DOI: 10.1039/c9ob02217a] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Metal-free consecutive C(sp2)-X (X = Cl, Br, S, N) bond formations of N-aryl amines (cyclic, fused, carbamate, and aminium radicals) were achieved under mild conditions using [bis(trifluoroacetoxy)iodo]benzene (PIFA) and simple nonharmful sodium salts. This direct and selective C(sp2)-H functionalization showed excellent functional group compatibility, cost effectiveness, and late-stage applicability for the synthesis of biologically active natural products. Two mechanisms were proposed to explain the ortho- or para-preference, as well as the accelerating effect of CH3NO2.
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Affiliation(s)
- Chandrashekar Mudithanapelli
- Gachon Institute of Pharmaceutical Science & Department of Pharmacy, College of Pharmacy, Gachon University, 191 Hambakmoeiro, Yeonsu-gu, Incheon 21936, Republic of Korea.
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25
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Du HW, Sun J, Gao QS, Wang JY, Wang H, Xu Z, Zhou MD. Synthesis of Monofluoroalkenes through Visible-Light-Promoted Defluorinative Alkylation of gem-Difluoroalkenes with 4-Alkyl-1,4-dihydropyridines. Org Lett 2020; 22:1542-1546. [DOI: 10.1021/acs.orglett.0c00134] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Hai-Wu Du
- School of Chemistry and Materials Science, Liaoning Shihua University, Fushun 113001, P. R. China
| | - Jing Sun
- School of Chemistry and Materials Science, Liaoning Shihua University, Fushun 113001, P. R. China
| | - Qi-Sheng Gao
- School of Chemistry and Materials Science, Liaoning Shihua University, Fushun 113001, P. R. China
| | - Jing-Yun Wang
- School of Chemistry and Materials Science, Liaoning Shihua University, Fushun 113001, P. R. China
| | - He Wang
- School of Chemistry and Materials Science, Liaoning Shihua University, Fushun 113001, P. R. China
| | - Zhaoqing Xu
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Science, Lanzhou University, Lanzhou 730000, P. R. China
| | - Ming-Dong Zhou
- School of Chemistry and Materials Science, Liaoning Shihua University, Fushun 113001, P. R. China
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26
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Motati DR, Uredi D, Burra AG, Bowen JP, Fronczek FR, Smith CR, Watkins EB. Differential formation of nitrogen-centered radicals leading to unprecedented, regioselective bromination of N,N′-(1,2-phenylene)bisamides and 2-amidophenols. Org Chem Front 2020. [DOI: 10.1039/c9qo01508f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
A highly efficient, site-selective, visible light-accelerated, remote C–H halogenation of unsymmetrical aromatic bisamides/amidoesters has been developed.
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Affiliation(s)
- Damoder Reddy Motati
- Center for Pharmacometrics and Molecular Discovery
- Department of Pharmaceutical Sciences
- College of Pharmacy
- Union University
- Jackson
| | - Dilipkumar Uredi
- Center for Pharmacometrics and Molecular Discovery
- Department of Pharmaceutical Sciences
- College of Pharmacy
- Union University
- Jackson
| | - Amarender Goud Burra
- Center for Pharmacometrics and Molecular Discovery
- Department of Pharmaceutical Sciences
- College of Pharmacy
- Union University
- Jackson
| | - J. Phillip Bowen
- Department of Pharmaceutical Sciences
- College of Pharmacy
- Mercer University
- Atlanta
- USA
| | | | - Clint R. Smith
- Center for Pharmacometrics and Molecular Discovery
- Department of Pharmaceutical Sciences
- College of Pharmacy
- Union University
- Jackson
| | - E. Blake Watkins
- Center for Pharmacometrics and Molecular Discovery
- Department of Pharmaceutical Sciences
- College of Pharmacy
- Union University
- Jackson
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27
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Zhu T, Xie S, Rojsitthisak P, Wu J. Recent advances in the direct β-C(sp2)–H functionalization of enamides. Org Biomol Chem 2020; 18:1504-1521. [DOI: 10.1039/c9ob02649e] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Recent advances in the direct β-C(sp2)–H functionalization of enamides, mainly including arylation, alkenylation, alkynylation, alkylation, acylation, sulfonylation, phosphorylation, and others, are reported.
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Affiliation(s)
- Tonghao Zhu
- School of Pharmaceutical and Chemical Engineering & Institute for Advanced Studies
- Taizhou University
- Taizhou 318000
- China
| | - Shimin Xie
- College of Chemistry
- Xiangtan University
- Xiangtan 411105
- China
| | - Pornchai Rojsitthisak
- Department of Food and Pharmaceutical Chemistry
- Faculty of Pharmaceutical Sciences
- Chulalongkorn University
- Patumwan
- Thailand
| | - Jie Wu
- School of Pharmaceutical and Chemical Engineering & Institute for Advanced Studies
- Taizhou University
- Taizhou 318000
- China
- State Key Laboratory of Organometallic Chemistry
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28
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29
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Lévay K, Hegedűs L. Recent Achievements in the Hydrogenation of Nitriles Catalyzed by Transitional Metals. CURR ORG CHEM 2019. [DOI: 10.2174/1385272823666191007160341] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Amines are important and valuable intermediates in the pharmaceutical, plastic
and agrochemical industry. Hence, there is an increasing interest in developing improved
process for the synthesis of amines. The heterogeneous catalytic hydrogenation of nitriles
is one of the most frequently applied methods for the synthesis of diverse amines, but the
homogeneous catalysis has also received a growing attention from the catalysis
community. This mini-review provides an overview of the recent achievements in the selective
reduction of nitriles using both homogeneous and heterogeneous transition metal
catalysts.
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Affiliation(s)
- Krisztina Lévay
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, 1111 Budapest, Hungary
| | - László Hegedűs
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, 1111 Budapest, Hungary
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30
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Tian C, Wang Q, Wang X, An G, Li G. Visible-Light Mediated ortho-Trifluoromethylation of Aniline Derivatives. J Org Chem 2019; 84:14241-14247. [DOI: 10.1021/acs.joc.9b01987] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Chao Tian
- Key Laboratory of Functional Inorganic Material Chemistry (MOE), School of Chemistry and Materials Science, Heilongjiang University, No. 74, Xuefu Road, Nangang District, Harbin 150080, People’s Republic of China
| | - Qiyue Wang
- Key Laboratory of Functional Inorganic Material Chemistry (MOE), School of Chemistry and Materials Science, Heilongjiang University, No. 74, Xuefu Road, Nangang District, Harbin 150080, People’s Republic of China
| | - Xueqi Wang
- Key Laboratory of Functional Inorganic Material Chemistry (MOE), School of Chemistry and Materials Science, Heilongjiang University, No. 74, Xuefu Road, Nangang District, Harbin 150080, People’s Republic of China
| | - Guanghui An
- Key Laboratory of Functional Inorganic Material Chemistry (MOE), School of Chemistry and Materials Science, Heilongjiang University, No. 74, Xuefu Road, Nangang District, Harbin 150080, People’s Republic of China
- College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin, Heilongjiang 150001, China
| | - Guangming Li
- Key Laboratory of Functional Inorganic Material Chemistry (MOE), School of Chemistry and Materials Science, Heilongjiang University, No. 74, Xuefu Road, Nangang District, Harbin 150080, People’s Republic of China
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31
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Gu L, Fang X, Weng Z, Lin J, He M, Ma W. PIDA‐Promoted Selective C
5
C−H Selenylations of Indolines
via
Weak Interactions. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900766] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Linghui Gu
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of AntibioticsChengdu University People's Republic of China Chengdu 610052
| | - Xinyue Fang
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of AntibioticsChengdu University People's Republic of China Chengdu 610052
| | - Zhengyun Weng
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of AntibioticsChengdu University People's Republic of China Chengdu 610052
| | - Jiafu Lin
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of AntibioticsChengdu University People's Republic of China Chengdu 610052
| | - Meicui He
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of AntibioticsChengdu University People's Republic of China Chengdu 610052
| | - Wenbo Ma
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of AntibioticsChengdu University People's Republic of China Chengdu 610052
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32
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Dutta U, Maiti S, Pimparkar S, Maiti S, Gahan LR, Krenske EH, Lupton DW, Maiti D. Rhodium catalyzed template-assisted distal para-C-H olefination. Chem Sci 2019; 10:7426-7432. [PMID: 31489165 PMCID: PMC6713868 DOI: 10.1039/c9sc01824g] [Citation(s) in RCA: 64] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2019] [Accepted: 06/15/2019] [Indexed: 01/12/2023] Open
Abstract
Rhodium catalysis has been extensively used for ortho-C-H functionalization reactions, and successfully extended to meta-C-H functionalization. Its application to para-C-H activation remains an unmet challenge. Herein we disclose the first example of such a reaction, with the Rh-catalyzed para-C-H olefination of arenes. The use of a Si-linked cyanobiphenyl unit as a traceless directing group leads to highly para-selective arene-olefin couplings.
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Affiliation(s)
- Uttam Dutta
- Department of Chemistry , IIT Bombay , Powai , Mumbai 400076 , India .
- IITB-Monash Research Academy , IIT Bombay , Powai , Mumbai 400 076 , India
- School of Chemistry , Monash University , Clayton , Victoria 3800 , Australia .
| | - Sudip Maiti
- Department of Chemistry , IIT Bombay , Powai , Mumbai 400076 , India .
| | - Sandeep Pimparkar
- Department of Chemistry , IIT Bombay , Powai , Mumbai 400076 , India .
- IITB-Monash Research Academy , IIT Bombay , Powai , Mumbai 400 076 , India
- School of Chemistry , Monash University , Clayton , Victoria 3800 , Australia .
| | - Siddhartha Maiti
- Department of Chemistry , IIT Bombay , Powai , Mumbai 400076 , India .
| | - Lawrence R Gahan
- School of Chemistry and Molecular Biosciences , University of Queensland , Brisbane , Queensland 4072 , Australia .
| | - Elizabeth H Krenske
- School of Chemistry and Molecular Biosciences , University of Queensland , Brisbane , Queensland 4072 , Australia .
| | - David W Lupton
- IITB-Monash Research Academy , IIT Bombay , Powai , Mumbai 400 076 , India
- School of Chemistry , Monash University , Clayton , Victoria 3800 , Australia .
| | - Debabrata Maiti
- Department of Chemistry , IIT Bombay , Powai , Mumbai 400076 , India .
- IITB-Monash Research Academy , IIT Bombay , Powai , Mumbai 400 076 , India
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33
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Reddy Lonka M, Zhang J, Gogula T, Zou H. Copper(i)-catalyzed benzylation of triazolopyridine through direct C-H functionalization. Org Biomol Chem 2019; 17:7455-7460. [PMID: 31359021 DOI: 10.1039/c9ob01433k] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
A general and efficient copper-catalyzed benzylation reaction of triazolopyridine with N-tosylhydrazones was developed. This reaction forms a C(sp2)-C(sp3) bond through cross-coupling, and represents an exceedingly practical method to afford 3-benzylated triazolopyridines in moderate to good yields. A proposed mechanistic pathway underlying this reaction was outlined. This catalytic transformation should enable broad synthetic applications in functionalization chemistry, allowing the synthesis of new pharmaceutically relevant triazolopyridine derivatives.
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Affiliation(s)
- Madhava Reddy Lonka
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, P.R. China.
| | - Jinquan Zhang
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, P.R. China.
| | - Thirupathi Gogula
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, P.R. China.
| | - Hongbin Zou
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, P.R. China.
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34
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Xu X, Chu Z, Xia C. Transition-metal free oxidative C-H etherification of acylanilines with alcohols through a radical pathway. Org Biomol Chem 2019; 17:6346-6350. [PMID: 31210244 DOI: 10.1039/c9ob01224a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A transition metal free approach for the synthesis of methyl/ethyl aryl ether via oxidative C-H etherification of acylanilines with alcohols has been developed. Various acylanilines are compatible under standard conditions, giving the corresponding products in moderate to good yields. This strategy avoids transition-metal catalyst and excessive alcohol, providing a simple and reliable alternative method for the synthesis of methyl/ethyl aryl ether. Control experiments reveal that a radical mechanism is involved in this transformation.
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Affiliation(s)
- Xiaobo Xu
- Shanghai Synmedia Chemical Co., Ltd, Shanghai 201201, China and Pharmacy College, Shandong First Medical University & Shandong Academy of Medical Sciences, Taian 271000, China.
| | - Zhengzhou Chu
- Shanghai Synmedia Chemical Co., Ltd, Shanghai 201201, China
| | - Chengcai Xia
- Pharmacy College, Shandong First Medical University & Shandong Academy of Medical Sciences, Taian 271000, China.
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35
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Cheng Y, Zheng J, Tian C, He Y, Zhang C, Tan Q, An G, Li G. Palladium‐Catalyzed C−H Arylation of Aliphatic and Aromatic Ketones using Dipeptide Transient Directing Groups. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900037] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Yaohang Cheng
- Key Laboratory of Functional Inorganic Material Chemistry (MOE)School of Chemistry and Materials ScienceHeilongjiang University No. 74, Xuefu Road, Nangang District Harbin 150080 P.R. China
| | - Jie Zheng
- Key Laboratory of Functional Inorganic Material Chemistry (MOE)School of Chemistry and Materials ScienceHeilongjiang University No. 74, Xuefu Road, Nangang District Harbin 150080 P.R. China
| | - Chao Tian
- Key Laboratory of Functional Inorganic Material Chemistry (MOE)School of Chemistry and Materials ScienceHeilongjiang University No. 74, Xuefu Road, Nangang District Harbin 150080 P.R. China
| | - Yuhang He
- Key Laboratory of Functional Inorganic Material Chemistry (MOE)School of Chemistry and Materials ScienceHeilongjiang University No. 74, Xuefu Road, Nangang District Harbin 150080 P.R. China
| | - Cong Zhang
- Key Laboratory of Functional Inorganic Material Chemistry (MOE)School of Chemistry and Materials ScienceHeilongjiang University No. 74, Xuefu Road, Nangang District Harbin 150080 P.R. China
| | - Qi Tan
- Key Laboratory of Functional Inorganic Material Chemistry (MOE)School of Chemistry and Materials ScienceHeilongjiang University No. 74, Xuefu Road, Nangang District Harbin 150080 P.R. China
| | - Guanghui An
- Key Laboratory of Functional Inorganic Material Chemistry (MOE)School of Chemistry and Materials ScienceHeilongjiang University No. 74, Xuefu Road, Nangang District Harbin 150080 P.R. China
- College of Materials Science and Chemical EngineeringHarbin Engineering University Harbin 150001 P.R. China
| | - Guangming Li
- Key Laboratory of Functional Inorganic Material Chemistry (MOE)School of Chemistry and Materials ScienceHeilongjiang University No. 74, Xuefu Road, Nangang District Harbin 150080 P.R. China
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36
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Tian C, Yang LM, Tian HT, An GH, Li GM. C5-selective trifluoromethylation of 8-amino quinolines via photoredox catalysis. J Fluor Chem 2019. [DOI: 10.1016/j.jfluchem.2018.12.011] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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37
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Zhang M, Yang L, Yang H, An G, Li G. Visible Light Mediated C(sp3)‐H Alkenylation of Cyclic Ethers Enabled by Aryl Ketone. ChemCatChem 2019. [DOI: 10.1002/cctc.201802079] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Mengmeng Zhang
- Key Laboratory of Functional Inorganic Material Chemistry (MOE) School of Chemistry and Materials ScienceHeilongjiang University No. 74, Xuefu Road, Nangang District Harbin 150080 P.R. China
| | - Liming Yang
- Key Laboratory of Functional Inorganic Material Chemistry (MOE) School of Chemistry and Materials ScienceHeilongjiang University No. 74, Xuefu Road, Nangang District Harbin 150080 P.R. China
| | - Hui Yang
- Key Laboratory of Functional Inorganic Material Chemistry (MOE) School of Chemistry and Materials ScienceHeilongjiang University No. 74, Xuefu Road, Nangang District Harbin 150080 P.R. China
| | - Guanghui An
- Key Laboratory of Functional Inorganic Material Chemistry (MOE) School of Chemistry and Materials ScienceHeilongjiang University No. 74, Xuefu Road, Nangang District Harbin 150080 P.R. China
- College of Materials Science and Chemical EngineeringHarbin Engineering University Harbin 150001 P.R. China
| | - Guangming Li
- Key Laboratory of Functional Inorganic Material Chemistry (MOE) School of Chemistry and Materials ScienceHeilongjiang University No. 74, Xuefu Road, Nangang District Harbin 150080 P.R. China
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38
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Guo L, Xu C, Wu DC, Hu GQ, Zhang HH, Hong K, Chen S, Liu X. Cascade alkylation and deuteration with aryl iodides via Pd/norbornene catalysis: an efficient method for the synthesis of congested deuterium-labeled arenes. Chem Commun (Camb) 2019; 55:8567-8570. [DOI: 10.1039/c9cc03988k] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
An efficient approach for synthesizing congested deuterium-labeled arenes via cascade alkylation and deuteration with aryl iodides has been disclosed.
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Affiliation(s)
- Lei Guo
- College of Chemistry and Chemical Engineering
- Nanjing Tech. University (Nanjing Tech.)
- Nanjing 211816
- P. R. China
| | - Chen Xu
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM)
- Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM)
- Nanjing Tech. University (Nanjing Tech.)
- Nanjing 211816
- P. R. China
| | - Ding-Chuan Wu
- College of Chemistry and Chemical Engineering
- Nanjing Tech. University (Nanjing Tech.)
- Nanjing 211816
- P. R. China
| | - Guang-Qi Hu
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM)
- Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM)
- Nanjing Tech. University (Nanjing Tech.)
- Nanjing 211816
- P. R. China
| | - Hong-Hai Zhang
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM)
- Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM)
- Nanjing Tech. University (Nanjing Tech.)
- Nanjing 211816
- P. R. China
| | - Kunlun Hong
- Center for Nanophase Materials Sciences
- Oak Ridge National Laboratory
- Oak Ridge
- USA
| | - Su Chen
- College of Chemistry and Chemical Engineering
- Nanjing Tech. University (Nanjing Tech.)
- Nanjing 211816
- P. R. China
| | - Xiang Liu
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM)
- Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM)
- Nanjing Tech. University (Nanjing Tech.)
- Nanjing 211816
- P. R. China
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39
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Duhamel T, Muñiz K. Cooperative iodine and photoredox catalysis for direct oxidative lactonization of carboxylic acids. Chem Commun (Camb) 2019; 55:933-936. [DOI: 10.1039/c8cc08594c] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
C–H lactonization is enabled by visible light-promoted cooperative catalysis combining molecular iodine and an organic dye.
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Affiliation(s)
- Thomas Duhamel
- Institute of Chemical Research of Catalonia (ICIQ)
- The Barcelona Institute of Science and Technology
- 43007 Tarragona
- Spain
- Universidad de Oviedo
| | - Kilian Muñiz
- Institute of Chemical Research of Catalonia (ICIQ)
- The Barcelona Institute of Science and Technology
- 43007 Tarragona
- Spain
- ICREA
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40
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Yang J, Hu X, Liu Z, Li X, Dong Y, Liu G. Cp*CoIII-catalyzed formal [4+2] cycloaddition of benzamides to afford quinazolinone derivatives. Chem Commun (Camb) 2019; 55:13840-13843. [DOI: 10.1039/c9cc07173c] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A Cp*CoIII-catalyzed arene C–H bond amidation/annulation of benzamides was developed to afford quinazolinone derivatives in one-pot with high yields and broad substrate scope.
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Affiliation(s)
- Jingshu Yang
- School of Pharmaceutical Sciences
- Tsinghua University
- Beijing 100084
- China
| | - Xiao Hu
- School of Pharmaceutical Sciences
- Tsinghua University
- Beijing 100084
- China
| | - Zijie Liu
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines
- Institute of Materia Medica
- Chinese Academy of Medical Sciences and Peking Union Medical College
- Beijing 100050
- China
| | - Xueyuan Li
- School of Pharmaceutical Sciences
- Tsinghua University
- Beijing 100084
- China
| | - Yi Dong
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines
- Institute of Materia Medica
- Chinese Academy of Medical Sciences and Peking Union Medical College
- Beijing 100050
- China
| | - Gang Liu
- School of Pharmaceutical Sciences
- Tsinghua University
- Beijing 100084
- China
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41
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Xu R, Cai C. Three-component difluoroalkylamination of alkenes mediated by photoredox and iron cooperative catalysis. Org Biomol Chem 2019; 17:8541-8545. [DOI: 10.1039/c9ob01815h] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A new three-component difluoroalkylamination of alkenes mediated by photoredox and iron cooperative catalysis has been developed with a broad substrate scope.
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Affiliation(s)
- Rui Xu
- Chemical Engineering College
- Nanjing University of Science and Technology
- Nanjing 210094
- People's Republic of China
| | - Chun Cai
- Chemical Engineering College
- Nanjing University of Science and Technology
- Nanjing 210094
- People's Republic of China
- Key Laboratory of Organofluorine Chemistry
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42
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Li G, Zhang G, Deng X, Qu K, Wang H, Wei W, Yang D. Transition-metal-free KI-catalyzed regioselective sulfenylation of 4-anilinocoumarins using Bunte salts. Org Biomol Chem 2018; 16:8015-8019. [DOI: 10.1039/c8ob02268b] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
An efficient and eco-friendly protocol for the KI-catalyzed regioselective sulfenylation of 4-anilinocoumarins with Bunte salts was established under metal-free conditions.
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Affiliation(s)
- Guoqing Li
- School of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu 273165
- P. R. China
| | - Guomeng Zhang
- School of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu 273165
- P. R. China
| | - Xuewu Deng
- School of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu 273165
- P. R. China
| | - Kunyu Qu
- School of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu 273165
- P. R. China
| | - Hua Wang
- School of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu 273165
- P. R. China
| | - Wei Wei
- School of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu 273165
- P. R. China
- State Key Laboratory Base of Eco-Chemical Engineering
| | - Daoshan Yang
- School of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu 273165
- P. R. China
- State Key Laboratory Base of Eco-Chemical Engineering
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