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Bone KI, Puleo TR, Bandar JS. Direct C-H Hydroxylation of N-Heteroarenes and Benzenes via Base-Catalyzed Halogen Transfer. J Am Chem Soc 2024; 146:9755-9767. [PMID: 38530788 PMCID: PMC11006572 DOI: 10.1021/jacs.3c14058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/28/2024]
Abstract
Hydroxylated (hetero)arenes are valued in many industries as both key constituents of end products and diversifiable synthetic building blocks. Accordingly, the development of reactions that complement and address the limitations of existing methods for the introduction of aromatic hydroxyl groups is an important goal. To this end, we apply base-catalyzed halogen transfer (X-transfer) to enable the direct C-H hydroxylation of mildly acidic N-heteroarenes and benzenes. This protocol employs an alkoxide base to catalyze X-transfer from sacrificial 2-halothiophene oxidants to aryl substrates, forming SNAr-active intermediates that undergo nucleophilic hydroxylation. Key to this process is the use of 2-phenylethanol as an inexpensive hydroxide surrogate that, after aromatic substitution and rapid elimination, provides the hydroxylated arene and styrene byproduct. Use of simple 2-halothiophenes allows for C-H hydroxylation of 6-membered N-heteroarenes and 1,3-azole derivatives, while a rationally designed 2-halobenzothiophene oxidant extends the scope to electron-deficient benzene substrates. Mechanistic studies indicate that aromatic X-transfer is reversible, suggesting that the deprotonation, halogenation, and substitution steps operate in synergy, manifesting in unique selectivity trends that are not necessarily dependent on the most acidic aryl position. The utility of this method is further demonstrated through streamlined target molecule syntheses, examples of regioselectivity that contrast alternative C-H hydroxylation methods, and the scalable recycling of the thiophene oxidants.
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Affiliation(s)
- Kendelyn I. Bone
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Thomas R. Puleo
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Jeffrey S. Bandar
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
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2
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Badshah G, Gomes CMB, Ali S, Luz EQ, Silvério GL, Santana FS, Seckler D, Paixão DB, Schneider PH, Rampon DS. Palladium-Catalyzed Direct Selanylation of Chalcogenophenes and Arenes Assisted by 2-(Methylthio)amide. J Org Chem 2023; 88:14033-14047. [PMID: 37712931 DOI: 10.1021/acs.joc.3c01577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/16/2023]
Abstract
The direct and selective conversion of a C-H bond into a C-Se bond remains a significant challenge, which is even more intricate with substrates having an innate regioselectivity under several reaction conditions, such as chalcogenophenes. We overrode their selectivity toward selanylation using palladium, copper, and the 2-(methylthio)amide directing group. This chelation-assisted direct selanylation was also suitable for mono and double ortho functionalization of arenes. The mechanistic studies indicate high-valent Pd(IV) species in the catalytic cycle, a reversible C-H activation step, and Cu(II) as a sequestering agent for organoselenide byproducts.
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Affiliation(s)
- Gul Badshah
- Laboratory of Polymers and Catalysis(LaPoCa),Department of Chemistry, Federal University of Paraná, P.O. Box 19061, Curitiba 81531-980, Paraná, Brazil
| | - Carla M B Gomes
- Laboratory of Polymers and Catalysis(LaPoCa),Department of Chemistry, Federal University of Paraná, P.O. Box 19061, Curitiba 81531-980, Paraná, Brazil
| | - Sher Ali
- Faculty of Animal Science and Food Engineering, University of São Paulo, Pirassununga 13635-900, São Paulo, Brazil
| | - Eduardo Q Luz
- Laboratory of Polymers and Catalysis(LaPoCa),Department of Chemistry, Federal University of Paraná, P.O. Box 19061, Curitiba 81531-980, Paraná, Brazil
| | - Gabriel L Silvério
- Laboratory of Polymers and Catalysis(LaPoCa),Department of Chemistry, Federal University of Paraná, P.O. Box 19061, Curitiba 81531-980, Paraná, Brazil
| | - Francielli S Santana
- Department of Chemistry, Federal University of Paraná, P.O. Box 19061, Curitiba 81531-990, Paraná, Brazil
| | - Diego Seckler
- Laboratory of Polymers and Catalysis(LaPoCa),Department of Chemistry, Federal University of Paraná, P.O. Box 19061, Curitiba 81531-980, Paraná, Brazil
| | - Douglas B Paixão
- Instituto de Química, Departamento de Química Orgânica, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre 91501-970, Rio Grande do Sul, Brazil
| | - Paulo H Schneider
- Instituto de Química, Departamento de Química Orgânica, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre 91501-970, Rio Grande do Sul, Brazil
| | - Daniel S Rampon
- Laboratory of Polymers and Catalysis(LaPoCa),Department of Chemistry, Federal University of Paraná, P.O. Box 19061, Curitiba 81531-980, Paraná, Brazil
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3
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Pilathottathil F, Unnikrishnan S, Kaliyamoorthy A. Heteroarylation of Sulfenate Ions In Situ Generated from β-Sulfinyl Esters under Transition-Metal-Free Conditions. J Org Chem 2022; 87:14980-14990. [PMID: 36268936 DOI: 10.1021/acs.joc.2c02153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Heteroaryl sulfoxides are an integral part of several bioactive molecules and pharmaceuticals. We have described a transition-metal-free route for the direct sulfinylation of 2-halobenzothiazoles and 2-halobenzimidazoles using β-sulfinyl esters as the source of the sulfenate ion in the presence of a Brønsted base such as LiOtBu, and the corresponding heteroaryl sulfoxides were isolated in yields of 30 to 94%. Moreover, we hypothesized a plausible concerted nucleophilic aromatic substitution (cSNAr) pathway for the direct incorporation of sulfinyl functionality into the 2-haloheteroarenes.
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Affiliation(s)
- Fathima Pilathottathil
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram, Vithura, Kerala 695551, India
| | - Sreelakshmi Unnikrishnan
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram, Vithura, Kerala 695551, India
| | - Alagiri Kaliyamoorthy
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram, Vithura, Kerala 695551, India
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4
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Xiao Y, Pu X, Lu F, Wang Y, Xu Y, Zhang H, Liu Y. L-cysteine as sustainable and effective sulfur source in the synthesis of diaryl sulfides and heteroarenethiols. ARAB J CHEM 2022. [DOI: 10.1016/j.arabjc.2022.103896] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
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5
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Luo RQ, Guo SP, Xiao HL, Li QH. Cross-coupling reaction of organoalane reagents with 2-mercaptobenzo-5-membered heterocycles for efficient synthesis of benzo-5-membered heterocycle sulfides. Tetrahedron 2022. [DOI: 10.1016/j.tet.2021.132564] [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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6
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Rampon D, Seckler D, da Luz EQ, Paixão DB, Larroza AME, Schneider PH, Alves D. Transition metal catalysed direct sulfanylation of unreactive C-H bonds: an overview of the last two decades. Org Biomol Chem 2022; 20:6072-6177. [DOI: 10.1039/d2ob00986b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Transition metal catalysed direct sulfanylations of unreactive C-H bonds have become a unique and straightforward synthetic strategy in late-stage C-S bond formation of relevant complex molecules. Such transformations have represented...
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7
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Balakishan G, Kumaraswamy G, Narayanarao V, Shankaraiah P. Lewis acid / Base-free Strategy for the Synthesis of 2-Arylthio and Selenyl Benzothiazole / Thiazole and Imidazole. HETEROCYCL COMMUN 2021. [DOI: 10.1515/hc-2020-0119] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
Abstract
A Cu(II)-catalyzed Csp2-Se and Csp2-Sulfur bond formation was achieved with moderate to good yields without the aid of Lewis acid and base. The reaction is compatible with a wide range of heterocycles such as benzothiazole, thiazole, and imidazole. Also, this typical protocol is found to be active in thio-selenation via S-H activation. Additionally, we proposed a plausible mechanistic pathway involving Cu(III) putative intermediate.
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Affiliation(s)
- Guniganti Balakishan
- Organic Synthesis &Process Chemistry Division, CSIR – Indian Institute of Chemical Technology , Hyderabad – , India
| | - Gullapalli Kumaraswamy
- Organic Synthesis &Process Chemistry Division, CSIR – Indian Institute of Chemical Technology , Hyderabad – , India ; Academy of Scientific and Innovative Research (AcSIR) , 2 Rafi Marg , New Delhi – , India
| | - Vykunthapu Narayanarao
- Organic Synthesis &Process Chemistry Division, CSIR – Indian Institute of Chemical Technology , Hyderabad – , India
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8
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Puleo TR, Bandar JS. Base-catalyzed aryl halide isomerization enables the 4-selective substitution of 3-bromopyridines. Chem Sci 2020; 11:10517-10522. [PMID: 34094310 PMCID: PMC8162412 DOI: 10.1039/d0sc02689a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The base-catalyzed isomerization of simple aryl halides is presented and utilized to achieve the 4-selective etherification, hydroxylation and amination of 3-bromopyridines. Mechanistic studies support isomerization of 3-bromopyridines to 4-bromopyridines proceeds via pyridyne intermediates and that 4-substitution selectivity is driven by a facile aromatic substitution reaction. Useful features of a tandem aryl halide isomerization/selective interception approach to aromatic functionalization are demonstrated. Example benefits include the use of readily available and stable 3-bromopyridines in place of less available and stable 4-halogenated congeners and the ability to converge mixtures of 3- and 5-bromopyridines to a single 4-substituted product.
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Affiliation(s)
- Thomas R Puleo
- Department of Chemistry, Colorado State University Fort Collins Colorado 80523 USA
| | - Jeffrey S Bandar
- Department of Chemistry, Colorado State University Fort Collins Colorado 80523 USA
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9
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Tsybizova A, Fritsche L, Gorbachev V, Miloglyadova L, Chen P. Cryogenic ion vibrational predissociation (CIVP) spectroscopy of a gas-phase molecular torsion balance to probe London dispersion forces in large molecules. J Chem Phys 2019; 151:234304. [DOI: 10.1063/1.5124227] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Affiliation(s)
| | - Lukas Fritsche
- Laboratorium für Organische Chemie, ETH Zürich, Zürich, Switzerland
| | | | | | - Peter Chen
- Laboratorium für Organische Chemie, ETH Zürich, Zürich, Switzerland
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10
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Xu WX, Dai XQ, Weng JQ. K 2S 2O 8-Mediated Hydroxyalkylation of Benzothiazoles with Alcohols in Aqueous Solution. ACS OMEGA 2019; 4:11285-11292. [PMID: 31460231 PMCID: PMC6648524 DOI: 10.1021/acsomega.9b01695] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/09/2019] [Accepted: 06/18/2019] [Indexed: 06/10/2023]
Abstract
The K2S2O8-mediated hydroxyalkylation of 2H-benzothiazoles with aliphatic alcohols in aqueous solution was described. The mild and convenient protocol generated a series of hydroxyalkylated benzothiazoles in moderate to good yields. Besides, benzimidazole and ethers were also compatible in this reaction, leading to corresponding C2 ether-substituted heteroarenes.
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Affiliation(s)
- Wen-Xiu Xu
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, People’s Republic of China
| | - Xiao-Qiang Dai
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, People’s Republic of China
| | - Jian-Quan Weng
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, People’s Republic of China
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11
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Rampon DS, Luz EQ, Lima DB, Balaguez RA, Schneider PH, Alves D. Transition metal catalysed direct selanylation of arenes and heteroarenes. Dalton Trans 2019; 48:9851-9905. [PMID: 31120472 DOI: 10.1039/c9dt00473d] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Transition metal catalysed C-H functionalization has reached an exciting level of sophistication, and, today, it represents a paradigm shift from the standard logic of synthetic chemistry. The direct conversion of C-H bonds into C-heteroatoms remains, however, a critical challenge. Nowadays, there is a great demand in general synthetic chemistry in, for example, the materials science for the development of straightforward C-Se bond formation, in order to fulfil the practical requirements. In this sense, this review summarizes recent outstanding advances in the C-Se bond formation through transition metal-catalysed direct selanylation, providing new insights into their mechanistic aspects and disclosing effective synthetic routes with high atom economy. In addition, this review intends to show the growing opportunities to construct complex chemical scaffolds containing selenium atoms.
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Affiliation(s)
- Daniel S Rampon
- Laboratório de Polímeros e Catálise - LAPOCA - Universidade Federal do Paraná, P.O. Box 19032, 81531-980, Curitiba-PR, Brazil.
| | - Eduardo Q Luz
- Laboratório de Polímeros e Catálise - LAPOCA - Universidade Federal do Paraná, P.O. Box 19032, 81531-980, Curitiba-PR, Brazil.
| | - David B Lima
- Laboratório de Polímeros e Catálise - LAPOCA - Universidade Federal do Paraná, P.O. Box 19032, 81531-980, Curitiba-PR, Brazil.
| | - Renata A Balaguez
- Laboratório de Síntese Orgânica Limpa, LASOL, CCQFA, Universidade Federal de Pelotas, UFPel, P.O. Box 354, 96010-900, Pelotas, RS, Brazil.
| | - Paulo Henrique Schneider
- Instituto de Química, Universidade Federal do Rio Grande do Sul (UFRGS), PO Box 15003, 91501-970 Porto Alegre, RS, Brazil
| | - Diego Alves
- Laboratório de Síntese Orgânica Limpa, LASOL, CCQFA, Universidade Federal de Pelotas, UFPel, P.O. Box 354, 96010-900, Pelotas, RS, Brazil.
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12
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Solomin VV, Radchenko DS, Slobodyanyuk EY, Geraschenko OV, Vashchenko BV, Grygorenko OO. Widely Exploited, Yet Unreported: Regiocontrolled Synthesis and the Suzuki-Miyaura Reactions of Bromooxazole Building Blocks. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900032] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Vitalii V. Solomin
- Enamine Ltd. (www.enamine.net), Chervonotkatska Street 78, Kyiv 02094, Ukraine, Chervonotkatska Street 78, Kyiv; 02094 Ukraine
| | - Dmytro S. Radchenko
- Enamine Ltd. (www.enamine.net), Chervonotkatska Street 78, Kyiv 02094, Ukraine, Chervonotkatska Street 78, Kyiv; 02094 Ukraine
- Taras Shevchenko National University of Kyiv; Ukraine
| | - Evgeniy Y. Slobodyanyuk
- Enamine Ltd. (www.enamine.net), Chervonotkatska Street 78, Kyiv 02094, Ukraine, Chervonotkatska Street 78, Kyiv; 02094 Ukraine
- Institute of Organic Chemistry; National Academy of Sciences of Ukraine, Murmanska Street 5, Kyiv 02660; Ukraine
| | - Oleksandr V. Geraschenko
- Enamine Ltd. (www.enamine.net), Chervonotkatska Street 78, Kyiv 02094, Ukraine, Chervonotkatska Street 78, Kyiv; 02094 Ukraine
| | - Bohdan V. Vashchenko
- Enamine Ltd. (www.enamine.net), Chervonotkatska Street 78, Kyiv 02094, Ukraine, Chervonotkatska Street 78, Kyiv; 02094 Ukraine
- Taras Shevchenko National University of Kyiv; Ukraine
| | - Oleksandr O. Grygorenko
- Enamine Ltd. (www.enamine.net), Chervonotkatska Street 78, Kyiv 02094, Ukraine, Chervonotkatska Street 78, Kyiv; 02094 Ukraine
- Taras Shevchenko National University of Kyiv; Ukraine
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13
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Xiao Y, Jing B, Liu X, Xue H, Liu Y. Metal-free C-H mercaptalization of benzothiazoles and benzoxazoles using 1,3-propanedithiol as thiol source. Beilstein J Org Chem 2019; 15:279-284. [PMID: 30800177 PMCID: PMC6369980 DOI: 10.3762/bjoc.15.24] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Accepted: 01/09/2019] [Indexed: 11/23/2022] Open
Abstract
A facile and effective C-H functionalization strategy for the synthesis of 2-mercaptobenzothiazoles and 2-mercaptobenzoxazoles is described. 1,3-Propanedithiol was employed to convert benzothiazoles and benzoxazoles to the corresponding heteroarylthiols in the presence of potassium hydroxide and DMSO. This novel protocol is featured by direct C-H mercaptalization of heteroarenes and a simple reaction system.
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Affiliation(s)
- Yan Xiao
- School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, 103# Wenhua Road, Shenyang, Liaoning 10016, China
| | - Bing Jing
- School of Life Science and Medicine, Dalian University of Technology, 2# Dagong Road, Panjin, Liaoning 124221, China
| | - Xiaoxia Liu
- School of Life Science and Medicine, Dalian University of Technology, 2# Dagong Road, Panjin, Liaoning 124221, China
| | - Hongyu Xue
- School of Life Science and Medicine, Dalian University of Technology, 2# Dagong Road, Panjin, Liaoning 124221, China
| | - Yajun Liu
- School of Life Science and Medicine, Dalian University of Technology, 2# Dagong Road, Panjin, Liaoning 124221, China
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14
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Rogers D, Brown RG, Brandeburg ZC, Ko EY, Hopkins MD, LeBlanc G, Lamar AA. Organic Dye-Catalyzed, Visible-Light Photoredox Bromination of Arenes and Heteroarenes Using N-Bromosuccinimide. ACS OMEGA 2018; 3:12868-12877. [PMID: 31458011 PMCID: PMC6644467 DOI: 10.1021/acsomega.8b02320] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2018] [Accepted: 09/25/2018] [Indexed: 05/25/2023]
Abstract
A variety of arenes and heteroarenes are brominated in good to excellent yields using N-bromosuccinimide (NBS) under mild and practical conditions. According to mechanistic investigations described within, the reaction is speculated to proceed via activation of NBS through a visible-light photoredox pathway utilizing erythrosine B as a photocatalyst. A photo-oxidative approach effectively amplifies the positive polarization on the bromine atom of the NBS reagent. This increase in the electrophilic nature of NBS results in drastically reduced reaction times and diversion from competing light-promoted reactive pathways.
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15
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Shigeno M, Fujii Y, Kajima A, Nozawa-Kumada K, Kondo Y. Catalytic Deprotonative α-Formylation of Heteroarenes by an Amide Base Generated in Situ from Tetramethylammonium Fluoride and Tris(trimethylsilyl)amine. Org Process Res Dev 2018. [DOI: 10.1021/acs.oprd.8b00247] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Masanori Shigeno
- Department of Biophysical Chemistry, Graduate School of Pharmaceutical Science, Tohoku University, Aoba, Sendai 980-8578, Japan
| | - Yuki Fujii
- Department of Biophysical Chemistry, Graduate School of Pharmaceutical Science, Tohoku University, Aoba, Sendai 980-8578, Japan
| | - Akihisa Kajima
- Department of Biophysical Chemistry, Graduate School of Pharmaceutical Science, Tohoku University, Aoba, Sendai 980-8578, Japan
| | - Kanako Nozawa-Kumada
- Department of Biophysical Chemistry, Graduate School of Pharmaceutical Science, Tohoku University, Aoba, Sendai 980-8578, Japan
| | - Yoshinori Kondo
- Department of Biophysical Chemistry, Graduate School of Pharmaceutical Science, Tohoku University, Aoba, Sendai 980-8578, Japan
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16
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Gandeepan P, Mo J, Ackermann L. Photo-induced copper-catalyzed C-H chalcogenation of azoles at room temperature. Chem Commun (Camb) 2018; 53:5906-5909. [PMID: 28513650 DOI: 10.1039/c7cc03107f] [Citation(s) in RCA: 68] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Inexpensive copper catalysts enabled direct C-H chalcogenations at ambient temperature by means of photo-induced catalysis. The expedient copper catalysis set the stage for C-S and C-Se bond formation from readily accessible non-volatile elemental chalcogens. The photo-assisted copper catalysis manifold proved suitable for a wide range of substrates with good functional group tolerance and exhibited high catalytic efficacy even at a reaction temperature of 25 °C.
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Affiliation(s)
- Parthasarathy Gandeepan
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität, Tammannstraße 2, 37077 Goettingen, Germany.
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17
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Liu X, Zhao X, Liang F, Ren B. t-BuONa-mediated direct C-H halogenation of electron-deficient (hetero)arenes. Org Biomol Chem 2018; 16:886-890. [PMID: 29340407 DOI: 10.1039/c7ob03081a] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
An efficient halogenation of electron-deficient (hetero)arenes is described. The reaction utilizes common t-BuONa as a catalyst (for iodination) or a promoter (for bromination and chlorination), and perfluorobutyl iodide, CBr4 or CCl4 as the readily-available halogenating agents, respectively. The protocol features broad scope, high efficiency, mild conditions and gram scalability. An ionic pathway involving halogen bond formation and halophilic attack is proposed. The utility of the resulting iodinated heteroarenes is demonstrated in visible light-mediated Caryl-Caryl cross-coupling reaction.
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Affiliation(s)
- Xia Liu
- College of Chemistry, Liaoning University, Shenyang 110036, China.
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18
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Rafique J, Saba S, Frizon TEA, Braga AL. Fe3
O4
Nanoparticles: A Robust and Magnetically Recoverable Catalyst for Direct C-H Bond Selenylation and Sulfenylation of Benzothiazoles. ChemistrySelect 2018. [DOI: 10.1002/slct.201702623] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Jamal Rafique
- Labselen, Departamento de Química; Universidade Federal de Santa Catarina; Florianópolis 88040-900 SC-Brazil
| | - Sumbal Saba
- Labselen, Departamento de Química; Universidade Federal de Santa Catarina; Florianópolis 88040-900 SC-Brazil
| | - Tiago E. A. Frizon
- Universidade Federal de Santa Catarina, Campus Araranguá; Araranguá 88906-072 SC-Brazil
| | - Antonio L. Braga
- Labselen, Departamento de Química; Universidade Federal de Santa Catarina; Florianópolis 88040-900 SC-Brazil
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19
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Iwasaki M, Nishihara Y. Direct Thiolation and Selenation of Aryl C-H Bonds Catalyzed by Palladium or Nickel. J SYN ORG CHEM JPN 2018. [DOI: 10.5059/yukigoseikyokaishi.76.11] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Masayuki Iwasaki
- Research Institute for Interdisciplinary Science, Okayama University
| | - Yasushi Nishihara
- Research Institute for Interdisciplinary Science, Okayama University
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20
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Abbasi M, Nowrouzi N, Borazjani SG. Conversion of organic halides to disulfanes using KCN and CS 2. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.09.072] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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21
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Yan H, Huang Z, Chen M, Li C, Chen Y, Gao M, Lei A. Elemental sulfur as a sulfuration agent in the copper-catalyzed C-H bond thiolation of electron-deficient arenes. Org Biomol Chem 2017; 15:8276-8279. [PMID: 28937700 DOI: 10.1039/c7ob02036h] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
By utilizing elemental sulfur as the thiolation agent and oxidant, a copper-catalyzed direct C-H bond thiolation of electron-deficient arenes was demonstrated. Various electron-deficient arenes were proved to be suitable for this transformation. Preliminary mechanistic studies indicated that this reaction underwent a radical pathway, in which the trisulfur radical anion (S3˙-) might play a vital role. Meanwhile, KIE experiments suggested that C-H bond cleavage was not involved in the rate-determining step.
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Affiliation(s)
- Haiming Yan
- National Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang 330022, People's Republic of China.
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22
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Nozawa-Kumada K, Osawa S, Sasaki M, Chataigner I, Shigeno M, Kondo Y. Deprotonative Silylation of Aromatic C-H Bonds Mediated by a Combination of Trifluoromethyltrialkylsilane and Fluoride. J Org Chem 2017; 82:9487-9496. [PMID: 28809110 DOI: 10.1021/acs.joc.7b01525] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A method for the deprotonative silylation of aromatic C-H bonds has been developed using trifluoromethyltrimethylsilane (CF3SiMe3, Ruppert-Prakash reagent) and a catalytic amount of fluoride. In this reaction, CF3SiMe3 is considered to act as a base and a silicon electrophile. This process is highly tolerant to various functional groups on heteroarenes and benzenes. Furthermore, this method can be applied to the synthesis of trimethylsilyl group-containing analogs of TAC-101, which is a bioactive synthetic retinoid with selective affinity for retinoic acid receptor α (RAR-α) binding. We also report further transformations of the silylated products into useful derivatives.
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Affiliation(s)
- Kanako Nozawa-Kumada
- Graduate School of Pharmaceutical Sciences, Tohoku University , 6-3, Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan
| | - Sayuri Osawa
- Graduate School of Pharmaceutical Sciences, Tohoku University , 6-3, Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan
| | - Midori Sasaki
- Graduate School of Pharmaceutical Sciences, Tohoku University , 6-3, Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan
| | - Isabelle Chataigner
- Normandie Univ , UNIROUEN, COBRA, INSA Rouen, CNRS, COBRA, 76000 Rouen, France
| | - Masanori Shigeno
- Graduate School of Pharmaceutical Sciences, Tohoku University , 6-3, Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan
| | - Yoshinori Kondo
- Graduate School of Pharmaceutical Sciences, Tohoku University , 6-3, Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan
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23
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Zhou M, Wang X, Huang K, Huang Y, Hu S, Zeng W. A fast, highly selective and sensitive dansyl-based fluorescent sensor for copper (II) ions and its imaging application in living cells. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.01.090] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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24
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Abbasi M, Sabet A. Europhtal (8020) efficiently catalyzes the aerobic oxidation of in situ generated thiols to symmetric disulfides (disulfanes). J Organomet Chem 2017. [DOI: 10.1016/j.jorganchem.2017.02.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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25
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D’Attoma J, Camara T, Brun PL, Robin Y, Bostyn S, Buron F, Routier S. Efficient Transposition of the Sandmeyer Reaction from Batch to Continuous Process. Org Process Res Dev 2016. [DOI: 10.1021/acs.oprd.6b00318] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Joseph D’Attoma
- Institut de Chimie
Organique et Analytique, Univ Orleans, UMR CNRS 7311, Rue de Chartres, BP 6759, 45067 CEDEX 2 Orléans, France
| | - Titi Camara
- ISOCHEM, 4 Rue Marc Sangnier, BP 16729, 45300 Pithiviers, France
| | | | - Yves Robin
- ISOCHEM, 4 Rue Marc Sangnier, BP 16729, 45300 Pithiviers, France
| | - Stéphane Bostyn
- Institut de Combustion,
Aérothermique, Réactivité, et Environnement (ICARE), 1c, Avenue de la Recherche Scientifique, 45071 CEDEX 2 Orléans, France
| | - Frédéric Buron
- Institut de Chimie
Organique et Analytique, Univ Orleans, UMR CNRS 7311, Rue de Chartres, BP 6759, 45067 CEDEX 2 Orléans, France
| | - Sylvain Routier
- Institut de Chimie
Organique et Analytique, Univ Orleans, UMR CNRS 7311, Rue de Chartres, BP 6759, 45067 CEDEX 2 Orléans, France
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26
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Shi Q, Zhang S, Zhang J, Oswald VF, Amassian A, Marder SR, Blakey SB. KO(t)Bu-Initiated Aryl C-H Iodination: A Powerful Tool for the Synthesis of High Electron Affinity Compounds. J Am Chem Soc 2016; 138:3946-9. [PMID: 26996823 DOI: 10.1021/jacs.5b12259] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An efficient iodination reaction of electron-deficient heterocycles is described. The reaction utilizes KO(t)Bu as an initiator and likely proceeds by a radical anion propagation mechanism. This new methodology is particularly effective for functionalization of building blocks for electron transport materials. Its utility is demonstrated with the synthesis of a new perylenediimide-thiazole non-fullerene acceptor capable of delivering a power conversion efficiency of 4.5% in a bulk-heterojunction organic solar cell.
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Affiliation(s)
- Qinqin Shi
- Department of Chemistry, Emory University , Atlanta, Georgia 30322, United States
| | - Siyuan Zhang
- School of Chemistry and Biochemistry and Center for Organic Photonics and Electronics, Georgia Institute of Technology , Atlanta, Georgia 30332, United States
| | - Junxiang Zhang
- School of Chemistry and Biochemistry and Center for Organic Photonics and Electronics, Georgia Institute of Technology , Atlanta, Georgia 30332, United States
| | - Victoria F Oswald
- Department of Chemistry, University of California-Irvine , Irvine, California 92697, United States
| | - Aram Amassian
- Physical Sciences and Engineering Division, King Abdullah University of Science and Technology (KAUST) , Thuwal 23955, Saudi Arabia
| | - Seth R Marder
- School of Chemistry and Biochemistry and Center for Organic Photonics and Electronics, Georgia Institute of Technology , Atlanta, Georgia 30332, United States
| | - Simon B Blakey
- Department of Chemistry, Emory University , Atlanta, Georgia 30322, United States
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27
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Muthukumar A, Mamillapalli NC, Sekar G. Potassium Phosphate-Catalyzed Chemoselective Reduction of α-Keto Amides: Route to Synthesize Passerini Adducts and 3-Phenyloxindoles. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201500815] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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28
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29
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Susanto S, Jung N, Bräse S. Solid phase syntheses of S,N-substituted 2-mercaptobenzoimidazoles. RSC Adv 2016. [DOI: 10.1039/c6ra05702k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
2-Mercaptobenzoimidazoles are an important class of heterocycles showing biological activity in diverse therapeutic applications.
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Affiliation(s)
- Steven Susanto
- Institute of Toxicology and Genetics
- Karlsruhe Institute of Technology (KIT)
- 76344 Eggenstein-Leopoldshafen
- Germany
| | - Nicole Jung
- Institute of Toxicology and Genetics
- Karlsruhe Institute of Technology (KIT)
- 76344 Eggenstein-Leopoldshafen
- Germany
- Institute of Organic Chemistry
| | - Stefan Bräse
- Institute of Toxicology and Genetics
- Karlsruhe Institute of Technology (KIT)
- 76344 Eggenstein-Leopoldshafen
- Germany
- Institute of Organic Chemistry
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30
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Iwasaki M, Nishihara Y. Palladium-catalysed direct thiolation and selenation of aryl C–H bonds assisted by directing groups. Dalton Trans 2016; 45:15278-15284. [DOI: 10.1039/c6dt02167k] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Recent advances on transition-metal-catalyzed direct chalcogenation of C–H bonds with disulfides and diselenides are summarized.
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Affiliation(s)
- Masayuki Iwasaki
- Research Institute for Interdisciplinary Science
- Okayama University
- Okayama 700-8530
- Japan
| | - Yasushi Nishihara
- Research Institute for Interdisciplinary Science
- Okayama University
- Okayama 700-8530
- Japan
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31
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Jia X, Wang J, Ding X, Yang J, Li N, Zhao N, Huang Z. Mg-Prompted Polyfluoroarene C–H Functionalization: Formal Synthesis of Transfluthrin, Fenfluthrin, and Tefluthrin. J Org Chem 2015; 80:10874-82. [DOI: 10.1021/acs.joc.5b02022] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Xuejiao Jia
- Key laboratory of Macromolecular
Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University (SNNU), Xi’an 710062, China
| | - Junya Wang
- Key laboratory of Macromolecular
Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University (SNNU), Xi’an 710062, China
| | - Xue Ding
- Key laboratory of Macromolecular
Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University (SNNU), Xi’an 710062, China
| | - Jun Yang
- Key laboratory of Macromolecular
Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University (SNNU), Xi’an 710062, China
| | - Nan Li
- Key laboratory of Macromolecular
Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University (SNNU), Xi’an 710062, China
| | - Na Zhao
- Key laboratory of Macromolecular
Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University (SNNU), Xi’an 710062, China
| | - Zhiyan Huang
- Key laboratory of Macromolecular
Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University (SNNU), Xi’an 710062, China
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32
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Sharma P, Rohilla S, Jain N. Copper Acetate–DMSO Promoted Methylthiolation of Arenes and Heteroarenes. J Org Chem 2015; 80:4116-22. [DOI: 10.1021/acs.joc.5b00443] [Citation(s) in RCA: 87] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Poonam Sharma
- Department
of Chemistry, Indian Institute of Technology, Delhi, India 110016
| | - Sandeep Rohilla
- Department
of Chemistry, Indian Institute of Technology, Delhi, India 110016
| | - Nidhi Jain
- Department
of Chemistry, Indian Institute of Technology, Delhi, India 110016
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33
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Wang X, Qiu R, Yan C, Reddy VP, Zhu L, Xu X, Yin SF. Nickel-Catalyzed Direct Thiolation of C(sp3)–H Bonds in Aliphatic Amides. Org Lett 2015; 17:1970-3. [DOI: 10.1021/acs.orglett.5b00706] [Citation(s) in RCA: 124] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Xie Wang
- State
Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry
and Chemical Engineering, Hunan University, Changsha, 410082, P. R. China
| | - Renhua Qiu
- State
Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry
and Chemical Engineering, Hunan University, Changsha, 410082, P. R. China
- Department
of Applied Chemistry, Graduate School of Engineering, Osaka University, Osaka, 565-0871, Japan
| | - Chunyang Yan
- State
Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry
and Chemical Engineering, Hunan University, Changsha, 410082, P. R. China
| | - Vutukuri Prakash Reddy
- Department
of Applied Chemistry, Graduate School of Engineering, Osaka University, Osaka, 565-0871, Japan
| | - Longzhi Zhu
- State
Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry
and Chemical Engineering, Hunan University, Changsha, 410082, P. R. China
| | - Xinhua Xu
- State
Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry
and Chemical Engineering, Hunan University, Changsha, 410082, P. R. China
| | - Shuang-Feng Yin
- State
Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry
and Chemical Engineering, Hunan University, Changsha, 410082, P. R. China
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34
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Sasaki M, Kondo Y. Deprotonative C-H silylation of functionalized arenes and heteroarenes using trifluoromethyltrialkylsilane with fluoride. Org Lett 2015; 17:848-51. [PMID: 25635510 DOI: 10.1021/ol503671b] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
A highly selective C-H silylation reaction of functionalized arenes and heteroarenes was developed using Ruppert-Prakash reagent (TMSCF3) activated by alkali metal fluoride. TMSCF3 is considered to play dual roles as a precursor of a mild base and also as a silicon electrophile. The silylation is compatible with sensitive functional groups such as halogen and nitro groups.
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Affiliation(s)
- Midori Sasaki
- Graduate School of Pharmaceutical Sciences, Tohoku University , Aramaki Aza Aoba 6-3, Sendai 980-8578 Japan
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35
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Zhao X, Ding F, Li J, Lu K, Lu X, Wang B, Yu P. Direct C–H iodination of 1,3-azoles catalysed by CuBr 2. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2014.12.029] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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36
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Arisawa M, Yamaguchi M, Nihei Y. Rhodium-Catalyzed 2-Methylthiolation Reaction of Thiazoles/Oxazoles Using 2-(Methylthio)thiazole. HETEROCYCLES 2015. [DOI: 10.3987/com-14-s(k)59] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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37
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Meng X, Yu C, Chen G, Zhao P. Heterogeneous biomimetic aerobic synthesis of 3-iodoimidazo[1,2-a]pyridines via CuOx/OMS-2-catalyzed tandem cyclization/iodination and their late-stage functionalization. Catal Sci Technol 2015. [DOI: 10.1039/c4cy00919c] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Heterogeneous catalysis performs well in biomimetic oxidation to generate a low-energy pathway for the synthesis of 3-iodoimidazo[1,2-a]pyridines.
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Affiliation(s)
- Xu Meng
- State Key Laboratory for Oxo Synthesis and Selective Oxidation
- Lanzhou Institute of Chemical Physics
- Chinese Academy of Sciences
- Lanzhou 730000
- PR China
| | - Chaoying Yu
- State Key Laboratory for Oxo Synthesis and Selective Oxidation
- Lanzhou Institute of Chemical Physics
- Chinese Academy of Sciences
- Lanzhou 730000
- PR China
| | - Gexin Chen
- State Key Laboratory for Oxo Synthesis and Selective Oxidation
- Lanzhou Institute of Chemical Physics
- Chinese Academy of Sciences
- Lanzhou 730000
- PR China
| | - Peiqing Zhao
- State Key Laboratory for Oxo Synthesis and Selective Oxidation
- Lanzhou Institute of Chemical Physics
- Chinese Academy of Sciences
- Lanzhou 730000
- PR China
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38
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Chen FJ, Liao G, Li X, Wu J, Shi BF. Cu(II)-Mediated C–S/N–S Bond Formation via C–H Activation: Access to Benzoisothiazolones Using Elemental Sulfur. Org Lett 2014; 16:5644-7. [DOI: 10.1021/ol5027156] [Citation(s) in RCA: 155] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Fa-Jie Chen
- Department
of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Gang Liao
- Department
of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Xin Li
- Department
of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Jun Wu
- Department
of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Bing-Feng Shi
- Department
of Chemistry, Zhejiang University, Hangzhou 310027, China
- State
Key Laboratory of Bioorganic and Natural Products Chemistry, Shanghai
Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
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39
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Iwasaki M, Iyanaga M, Tsuchiya Y, Nishimura Y, Li W, Li Z, Nishihara Y. Palladium-catalyzed direct thiolation of aryl C-H bonds with disulfides. Chemistry 2014; 20:2459-62. [PMID: 24488804 DOI: 10.1002/chem.201304717] [Citation(s) in RCA: 136] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2014] [Indexed: 01/14/2023]
Abstract
A catalytic variant of the direct thiolation of arenes, bearing directing groups, with disulfides or thiols has been developed under palladium and copper co-catalysis. Both sulfenyl moieties of the disulfide could be incorporated into the thiolated products, therefore, the reactions reached completion with only half an equivalent of disulfide, with respect to the starting arene. Experimental evidence suggested that the reaction proceeds through a Pd(II)/Pd(IV) mechanism.
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Affiliation(s)
- Masayuki Iwasaki
- Division of Earth, Life, and Molecular Sciences, Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530 (Japan), Fax: (+81) 86-251-7855
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40
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Substrate-promoted ligand-free CuI catalyzed S-arylation of 2-mercaptobenzothiazoles with aryl iodides in water. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.07.096] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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41
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N-heterocyclic carbene copper(I) complex-catalyzed direct C–H thiolation of benzothiazoles. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.06.104] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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42
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Lu L, Yan H, Sun P, Zhu Y, Yang H, Liu D, Rong G, Mao J. Synthesis of Internal Alkynes through the Pd-Catalyzed Coupling of Heteroaryl Halides with Terminal Alkynes. European J Org Chem 2013. [DOI: 10.1002/ejoc.201201689] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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43
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Alwarsh S, Ayinuola K, Dormi SS, McIntosh MC. Intercepting the Breslow intermediate via Claisen rearrangement: synthesis of complex tertiary alcohols without organometallic reagents. Org Lett 2013; 15:3-5. [PMID: 23214715 PMCID: PMC3572745 DOI: 10.1021/ol303053c] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
A novel Claisen rearrangement in which the Breslow intermediate is engaged as a hydroxy-substituted N,S-ketene acetal to provide complex 3° alcohols without the use of organometallic reagents is reported. The reaction constitutes an unprecedented reactivity mode for the Breslow intermediate.
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44
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Liu Y, Wang H, Wang C, Wan JP, Wen C. Bio-based green solvent mediated disulfide synthesis via thiol couplings free of catalyst and additive. RSC Adv 2013. [DOI: 10.1039/c3ra42915f] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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45
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Dai C, Xu Z, Huang F, Yu Z, Gao YF. Lewis Acid-Catalyzed, Copper(II)-Mediated Synthesis of Heteroaryl Thioethers under Base-Free Conditions. J Org Chem 2012; 77:4414-9. [DOI: 10.1021/jo202624s] [Citation(s) in RCA: 145] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Chao Dai
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian
116023, China
- Department
of Bioengineering, Zhengzhou University, Zhengzhou 450001, China
| | - Zhaoqing Xu
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian
116023, China
| | - Fei Huang
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian
116023, China
| | - Zhengkun Yu
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian
116023, China
| | - Yan-Feng Gao
- Department
of Bioengineering, Zhengzhou University, Zhengzhou 450001, China
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46
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47
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Radhakrishan R, Do DM, Jaenicke S, Sasson Y, Chuah GK. Potassium Phosphate as a Solid Base Catalyst for the Catalytic Transfer Hydrogenation of Aldehydes and Ketones. ACS Catal 2011. [DOI: 10.1021/cs200299v] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Rajitha Radhakrishan
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543
| | - Dong Minh Do
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543
| | - Stephan Jaenicke
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543
| | - Yoel Sasson
- Casali Institute of Applied Chemistry, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
| | - Gaik-Khuan Chuah
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543
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48
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Ranjit S, Lee R, Heryadi D, Shen C, Wu J, Zhang P, Huang KW, Liu X. Copper-Mediated C–H Activation/C–S Cross-Coupling of Heterocycles with Thiols. J Org Chem 2011; 76:8999-9007. [DOI: 10.1021/jo2017444] [Citation(s) in RCA: 211] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Sadananda Ranjit
- Department of Chemistry, National University of Singapore, Singapore
117543
| | - Richmond Lee
- KAUST
Catalysis Center and Division
of Chemical and Life Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal 23955-6900,
Kingdom of Saudi Arabia
| | - Dodi Heryadi
- KAUST
Catalysis Center and Division
of Chemical and Life Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal 23955-6900,
Kingdom of Saudi Arabia
| | - Chao Shen
- College of Material, Chemistry
and Chemical Engineering, Hangzhou Normal University, Hangzhou 310036, China
| | - Ji’En Wu
- Department of Chemistry, National University of Singapore, Singapore
117543
| | - Pengfei Zhang
- College of Material, Chemistry
and Chemical Engineering, Hangzhou Normal University, Hangzhou 310036, China
| | - Kuo-Wei Huang
- KAUST
Catalysis Center and Division
of Chemical and Life Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal 23955-6900,
Kingdom of Saudi Arabia
| | - Xiaogang Liu
- Department of Chemistry, National University of Singapore, Singapore
117543
- Institute of Materials
Research
and Engineering, A*STAR, 3 Research Link,
Singapore 117602
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49
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Abstract
A general method for a highly regioselective copper-catalyzed cross-coupling of two aromatic compounds using iodine as an oxidant has been developed. The reactions involve an initial iodination of one arene followed by arylation of the most acidic C-H bond of the other coupling component. Cross-coupling of electron-rich arenes, electron-poor arenes, and five- and six-membered heterocycles is possible in many combinations. Typically, a 1/1.5 to 1/3 ratio of coupling components is used, in contrast to existing methodology that often employs a large excess of one of the arenes. Common functionalities such as ester, ketone, aldehyde, ether, nitrile, nitro, and amine are well-tolerated.
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Affiliation(s)
- Hien-Quang Do
- Department of Chemistry, University of Houston, Houston, TX 77204-5003
| | - Olafs Daugulis
- Department of Chemistry, University of Houston, Houston, TX 77204-5003
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50
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Arisawa M, Toriyama F, Yamaguchi M. Rhodium-catalyzed phenylthiolation reaction of heteroaromatic compounds using α-(phenylthio)isobutyrophenone. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.02.077] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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