1
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Hu S, Radosevich AT. Electrophilic C(sp 2)-H Cyanation with Inorganic Cyanate (OCN -) by P III/P V=O-Catalyzed Phase Transfer Activation. Angew Chem Int Ed Engl 2024:e202409854. [PMID: 38950149 DOI: 10.1002/anie.202409854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2024] [Revised: 06/29/2024] [Accepted: 06/30/2024] [Indexed: 07/03/2024]
Abstract
An organophosphorus -catalyzed method for the direct electrophilic cyanation of C(sp2)-H nucleophiles with sodium cyanate (NaOCN) is reported. The catalytic deoxyfunctionalization of the OCN- anion is enabled by the use of a small-ring phosphacyclic (phosphetane) catalyst in combination with a terminal hydrosilane O-atom acceptor and a malonate-derived bromenium donor. In situ spectroscopy under single-turnover conditions demonstrate that insoluble inorganic cyanate anion is activated by bromide displacement on a bromophosphonium catalytic intermediate to give a reactive N-bound isocyanatophosphonium ion, which delivers electrophilic "CN+" equivalents to nucleophilic (hetero)arenes and alkenes with loss of a phosphine oxide. These results demonstrate the feasibility of deoxyfunctionalization of insoluble inorganic salts by PIII/PV=O catalyzed phase transfer activation.
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Affiliation(s)
- Shicheng Hu
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Alexander T Radosevich
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
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2
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Gour NK, Baruah MJ, Das B, Sharma M. Unprecedented iron-assisted room temperature synthesis of AgCN using acetonitrile. RSC Adv 2024; 14:10416-10421. [PMID: 38567347 PMCID: PMC10985703 DOI: 10.1039/d4ra01790k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2024] [Accepted: 03/25/2024] [Indexed: 04/04/2024] Open
Abstract
A straightforward and convenient approach for producing AgCN at room temperature using acetonitrile as a source has been developed, employing various iron salts. To date, there have been no prior studies documenting the synthesis of AgCN by cleaving the C-CN bond in acetonitrile with the use of iron salts. The resulting highly crystalline material was subjected to characterization through XRD and FT-IR analysis. Additionally, the same process was used for C-CN bond breaking using Ag2S or via the formation of an AgSxOy composite. Consequently, this report is primarily dedicated to exploring the efficacy of different iron salts in breaking the C-CN bond in CH3CN. A theoretical investigation of the proposed experimental scheme has also been performed to confer the feasibility of the reaction.
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Affiliation(s)
- Nand Kishor Gour
- Department of Chemical Sciences, Tezpur University Napaam Tezpur - 784028 Assam India
| | - Manash J Baruah
- Department of Chemistry, D. C. B. Girls College Jorhat Assam 785001 India
| | - Biraj Das
- Department of Chemistry, D. D. R. College Chabua Dibrugarh Assam 786184 India
| | - Mukesh Sharma
- Department of Chemistry, Suren Das College Hajo Kamrup Assam 781102 India
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3
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Chen K, Zeng Q, Xie L, Xue Z, Wang J, Xu Y. Functional-group translocation of cyano groups by reversible C-H sampling. Nature 2023; 620:1007-1012. [PMID: 37364765 DOI: 10.1038/s41586-023-06347-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Accepted: 06/20/2023] [Indexed: 06/28/2023]
Abstract
Chemical transformations that introduce, remove or manipulate functional groups are ubiquitous in synthetic chemistry1. Unlike conventional functional-group interconversion reactions that swap one functionality for another, transformations that alter solely the location of functional groups are far less explored. Here, by photocatalytic, reversible C-H sampling, we report a functional-group translocation reaction of cyano (CN) groups in common nitriles, allowing for the direct positional exchange between a CN group and an unactivated C-H bond. The reaction shows high fidelity for 1,4-CN translocation, frequently contrary to inherent site selectivity in conventional C-H functionalizations. We also report the direct transannular CN translocation of cyclic systems, providing access to valuable structures that are non-trivial to obtain by other methods. Making use of the synthetic versatility of CN and a key CN translocation step, we showcase concise syntheses of building blocks of bioactive molecules. Furthermore, the combination of C-H cyanation and CN translocation allows access to unconventional C-H derivatives. Overall, the reported reaction represents a way to achieve site-selective C-H transformation reactions without requiring a site-selective C-H cleavage step.
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Affiliation(s)
- Ken Chen
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing, China
| | - Qingrui Zeng
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing, China
| | - Longhuan Xie
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing, China
| | - Zisheng Xue
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing, China
| | - Jianbo Wang
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing, China
| | - Yan Xu
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing, China.
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4
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de Munnik M, Lang PA, De Dios Anton F, Cacho M, Bates RH, Brem J, Rodríguez Miquel B, Schofield CJ. High-throughput screen with the l,d-transpeptidase Ldt Mt2 of Mycobacterium tuberculosis reveals novel classes of covalently reacting inhibitors. Chem Sci 2023; 14:7262-7278. [PMID: 37416715 PMCID: PMC10321483 DOI: 10.1039/d2sc06858c] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Accepted: 05/29/2023] [Indexed: 07/08/2023] Open
Abstract
Disruption of bacterial cell wall biosynthesis in Mycobacterium tuberculosis is a promising target for treating tuberculosis. The l,d-transpeptidase LdtMt2, which is responsible for the formation of 3 → 3 cross-links in the cell wall peptidoglycan, has been identified as essential for M. tuberculosis virulence. We optimised a high-throughput assay for LdtMt2, and screened a targeted library of ∼10 000 electrophilic compounds. Potent inhibitor classes were identified, including established (e.g., β-lactams) and unexplored covalently reacting electrophilic groups (e.g., cyanamides). Protein-observed mass spectrometric studies reveal most classes to react covalently and irreversibly with the LdtMt2 catalytic cysteine (Cys354). Crystallographic analyses of seven representative inhibitors reveal induced fit involving a loop enclosing the LdtMt2 active site. Several of the identified compounds have a bactericidal effect on M. tuberculosis within macrophages, one with an MIC50 value of ∼1 μM. The results provide leads for the development of new covalently reaction inhibitors of LdtMt2 and other nucleophilic cysteine enzymes.
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Affiliation(s)
- Mariska de Munnik
- Chemistry Research Laboratory, Department of Chemistry, the Ineos Oxford Institute of Antimicrobial Research, University of Oxford 12 Mansfield Road Oxford OX1 3TA UK
| | - Pauline A Lang
- Chemistry Research Laboratory, Department of Chemistry, the Ineos Oxford Institute of Antimicrobial Research, University of Oxford 12 Mansfield Road Oxford OX1 3TA UK
| | - Francisco De Dios Anton
- Tres Cantos Medicines Development Campus, GlaxoSmithKline Calle Severo Ochoa 2, Tres Cantos Madrid Spain
| | - Mónica Cacho
- Tres Cantos Medicines Development Campus, GlaxoSmithKline Calle Severo Ochoa 2, Tres Cantos Madrid Spain
| | - Robert H Bates
- Tres Cantos Medicines Development Campus, GlaxoSmithKline Calle Severo Ochoa 2, Tres Cantos Madrid Spain
| | - Jürgen Brem
- Chemistry Research Laboratory, Department of Chemistry, the Ineos Oxford Institute of Antimicrobial Research, University of Oxford 12 Mansfield Road Oxford OX1 3TA UK
| | - Beatriz Rodríguez Miquel
- Tres Cantos Medicines Development Campus, GlaxoSmithKline Calle Severo Ochoa 2, Tres Cantos Madrid Spain
| | - Christopher J Schofield
- Chemistry Research Laboratory, Department of Chemistry, the Ineos Oxford Institute of Antimicrobial Research, University of Oxford 12 Mansfield Road Oxford OX1 3TA UK
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5
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Bi C, Chadwick J, Davies ML, DelMonte AJ, Geng P, Glace AW, Green RA, Gurak JA, Haley MW, He BL, Inankur B, Jamison CR, Joe CL, Kolotuchin S, Lin D, Lou S, Nye J, Ortiz A, Purdum GE, Rosso VW, Shah M, Simmons EM, Stevens JM, Strotman NA, Tan Y, Zhang L. Coupling-Condensation Strategy for the Convergent Synthesis of an Imidazole-Fused 2-Aminoquinoline NLRP3 Agonist. J Org Chem 2023; 88:384-394. [PMID: 36516991 DOI: 10.1021/acs.joc.2c02395] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The development of a convergent route to the NLRP3 (nucleotide-binding domain and leucine-rich repeat-containing protein 3) agonist BMS-986299 is reported. The synthesis relies on a key Miyaura borylation and a tandem Suzuki-Miyaura coupling between an iodoimidazole and an o-aminochloroarene, followed by acid-mediated cyclization to afford the aminoquinoline core. The subsequent Boc cleavage and regioselective acylation afford the target compound. Two routes to the iodoimidazole intermediate are presented, along with the synthesis of the o-aminochloroarene via Negishi coupling. The convergent six-step route leads to an 80% reduction in process mass intensity compared to the linear enabling synthesis.
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Affiliation(s)
- Cong Bi
- Chemical Process Development, Bristol Myers Squibb, 1 Squibb Drive, New Brunswick, New Jersey 08903, United States
| | - James Chadwick
- Chemical Process Development, Bristol Myers Squibb, Reeds Lane, Moreton, Wirral CH46 1QW, U.K
| | - Merrill L Davies
- Chemical Process Development, Bristol Myers Squibb, 1 Squibb Drive, New Brunswick, New Jersey 08903, United States
| | - Albert J DelMonte
- Chemical Process Development, Bristol Myers Squibb, 1 Squibb Drive, New Brunswick, New Jersey 08903, United States
| | - Peng Geng
- Chemical Process Development, Bristol Myers Squibb, 1 Squibb Drive, New Brunswick, New Jersey 08903, United States
| | - Andrew W Glace
- Chemical Process Development, Bristol Myers Squibb, 1 Squibb Drive, New Brunswick, New Jersey 08903, United States
| | - Rebecca A Green
- Chemical Process Development, Bristol Myers Squibb, 1 Squibb Drive, New Brunswick, New Jersey 08903, United States
| | - John A Gurak
- Chemical Process Development, Bristol Myers Squibb, 1 Squibb Drive, New Brunswick, New Jersey 08903, United States
| | - Matthew W Haley
- Chemical Process Development, Bristol Myers Squibb, 1 Squibb Drive, New Brunswick, New Jersey 08903, United States
| | - Brian L He
- Chemical Process Development, Bristol Myers Squibb, 1 Squibb Drive, New Brunswick, New Jersey 08903, United States
| | - Bahar Inankur
- Chemical Process Development, Bristol Myers Squibb, 1 Squibb Drive, New Brunswick, New Jersey 08903, United States
| | - Christopher R Jamison
- Chemical Process Development, Bristol Myers Squibb, 1 Squibb Drive, New Brunswick, New Jersey 08903, United States
| | - Candice L Joe
- Chemical Process Development, Bristol Myers Squibb, 1 Squibb Drive, New Brunswick, New Jersey 08903, United States
| | - Sergei Kolotuchin
- Chemical Process Development, Bristol Myers Squibb, 1 Squibb Drive, New Brunswick, New Jersey 08903, United States
| | - Dong Lin
- Chemical Process Development, Bristol Myers Squibb, 1 Squibb Drive, New Brunswick, New Jersey 08903, United States
| | - Sha Lou
- Chemical Process Development, Bristol Myers Squibb, 1 Squibb Drive, New Brunswick, New Jersey 08903, United States
| | - Jeffrey Nye
- Chemical Process Development, Bristol Myers Squibb, 1 Squibb Drive, New Brunswick, New Jersey 08903, United States
| | - Adrian Ortiz
- Chemical Process Development, Bristol Myers Squibb, 1 Squibb Drive, New Brunswick, New Jersey 08903, United States
| | - Geoffrey E Purdum
- Chemical Process Development, Bristol Myers Squibb, 1 Squibb Drive, New Brunswick, New Jersey 08903, United States
| | - Victor W Rosso
- Chemical Process Development, Bristol Myers Squibb, 1 Squibb Drive, New Brunswick, New Jersey 08903, United States
| | - Mansi Shah
- Chemical Process Development, Bristol Myers Squibb, 1 Squibb Drive, New Brunswick, New Jersey 08903, United States
| | - Eric M Simmons
- Chemical Process Development, Bristol Myers Squibb, 1 Squibb Drive, New Brunswick, New Jersey 08903, United States
| | - Jason M Stevens
- Chemical Process Development, Bristol Myers Squibb, 1 Squibb Drive, New Brunswick, New Jersey 08903, United States
| | - Neil A Strotman
- Chemical Process Development, Bristol Myers Squibb, 1 Squibb Drive, New Brunswick, New Jersey 08903, United States
| | - Yichen Tan
- Chemical Process Development, Bristol Myers Squibb, 1 Squibb Drive, New Brunswick, New Jersey 08903, United States
| | - Ling Zhang
- Chemical Process Development, Bristol Myers Squibb, 1 Squibb Drive, New Brunswick, New Jersey 08903, United States
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6
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Wang Z, Hao J, Lv Y, Qu C, Yue H, Wei W. Additive‐Free Visible‐Light‐Initiated Three‐Component Cyanation and Azidation. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Zhiwei Wang
- Qufu Normal University School of Chemistry and Chemical Engineering CHINA
| | - Jindong Hao
- Qufu Normal University School of Chemistry and Chemical Engineering CHINA
| | - Yufen Lv
- Qufu Normal University School of Chemistry and Chemical Engineering CHINA
| | - Chengming Qu
- Qufu Normal University School of Chemistry and Chemical Engineering CHINA
| | - Huilan Yue
- Qufu Normal University School of Chemistry and Chemical Engineering CHINA
| | - Wei Wei
- Qufu Normal University Chemistry Jingxuan west road 57 number 273165 Qufu CHINA
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7
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Wang K, Li Y, Shuai X, Chen R, Sun A, Wang Z. Highly efficient and diastereoselective construction of substituted pyrrolidines bearing a quaternary carbon center via 1,3‐dipolar cycloaddition. J Heterocycl Chem 2022. [DOI: 10.1002/jhet.4494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Kai‐Kai Wang
- School of Pharmacy, Key Laboratory of Nano‐carbon Modified Film Technology Engineering of Henan Province Xinxiang University Xinxiang China
| | - Yan‐Li Li
- Medical College Xinxiang University Xinxiang China
| | | | - Rongxiang Chen
- School of Pharmacy, Key Laboratory of Nano‐carbon Modified Film Technology Engineering of Henan Province Xinxiang University Xinxiang China
| | - Aili Sun
- School of Pharmacy, Key Laboratory of Nano‐carbon Modified Film Technology Engineering of Henan Province Xinxiang University Xinxiang China
| | - Zhan‐Yong Wang
- School of Pharmacy, Key Laboratory of Nano‐carbon Modified Film Technology Engineering of Henan Province Xinxiang University Xinxiang China
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8
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Mills LR, Patel P, Rousseaux SAL. Decyanation-(hetero)arylation of malononitriles to access α-(hetero)arylnitriles. Org Biomol Chem 2022; 20:5933-5937. [PMID: 35315852 DOI: 10.1039/d2ob00236a] [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
Quaternary α-(hetero)arylnitriles are desirable biologically relevant products, however the existing methods for their synthesis can be unselective or require the use of undesirable reagents, such as cyanide salts. Herein we report a one-pot method for transnitrilation-mediated decyanation-metalation of disubstituted malononitriles, followed by treatment with (hetero)aryl electrophiles to access quaternary α-(hetero)arylnitrile products. A number of products were prepared using this method (34 examples, 27-99% yield). This method highlights the usefulness of malononitriles as precursors for alkylnitrile-containing compounds.
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Affiliation(s)
- L Reginald Mills
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, ON M5S 3H6, Canada.
| | - Purvish Patel
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, ON M5S 3H6, Canada.
| | - Sophie A L Rousseaux
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, ON M5S 3H6, Canada.
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9
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Ren X, Wang G, Ji X, Dong K. Synthesis of Two Types of Nitriles Both Bearing Quaternary Carbon Centers in One-Pot Manner. CHINESE J ORG CHEM 2022. [DOI: 10.6023/cjoc202107017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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10
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Kim DP, Sharma BM, Nikam AV, Lahore S, Ahn GN. Cyanide-Free Cyanation of sp2 and sp-Carbons by Oxazole based Masked CN Source Using Flow Microreactors. Chemistry 2021; 28:e202103777. [PMID: 34963029 DOI: 10.1002/chem.202103777] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Indexed: 11/10/2022]
Abstract
We herein report a cyanide-free continuous-flow process for cyanation of sp 2 and sp carbons to synthesize aryl, vinyl and acetylenic nitriles from (5-methyl-2-phenyloxazol-4-yl) boronic acid [OxBA] reagent as a sole source of carbon-bound masked -CN source. Non-toxic and stable OxBA reagent is generated by lithiation-borylation of bromo-oxazole, and the consecutive Suzuki-Miyaura cross-coupling with aryl, vinyl, or acetylenic halides and demasking [4 + 2]/retro-[4 + 2] sequence were successfully accomplished to give the desired cyano compounds with reasonably good yields in a four-step flow manner. A unique feature of this cyanation protocol in flow enables to cyanate a variety of sp 2 and sp carbons to produce a broad spectrum of aryl acetonitrile. It is envisaged that the OxBA based cyanation would replace existing unstable and toxic approaches as well as non-toxic cyanation using two different sources of "C" and "N" to incorporate the -CN group.
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Affiliation(s)
- Dong-Pyo Kim
- Pohang University of Science and Technology, chemical engineering, san 31, Hyoja-dong, Nam-gu, 790-784, Pohang, KOREA, REPUBLIC OF
| | - Brijesh M Sharma
- Pohang Gonggwa Daehakgyo Sinsojae Gonghakgwa: Pohang University of Science and Technology Department of Materials Science and Engineering, Department of Chemical Engineering, KOREA, REPUBLIC OF
| | - Arun V Nikam
- Pohang Gonggwa Daehakgyo Sinsojae Gonghakgwa: Pohang University of Science and Technology Department of Materials Science and Engineering, Department of Chemical Engineering, KOREA, REPUBLIC OF
| | - Santosh Lahore
- Pohang Gonggwa Daehakgyo Sinsojae Gonghakgwa: Pohang University of Science and Technology Department of Materials Science and Engineering, Department of Chemical Engineering, KOREA, REPUBLIC OF
| | - Gwang-Noh Ahn
- Pohang Gonggwa Daehakgyo Sinsojae Gonghakgwa: Pohang University of Science and Technology Department of Materials Science and Engineering, Department of Chemical Engineering, KOREA, REPUBLIC OF
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11
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Weigel WK, Dang HT, Feceu A, Martin DBC. Direct radical functionalization methods to access substituted adamantanes and diamondoids. Org Biomol Chem 2021; 20:10-36. [PMID: 34651636 DOI: 10.1039/d1ob01916c] [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
Adamantane derivatives have diverse applications in the fields of medicinal chemistry, catalyst development and nanomaterials, owing to their unique structural, biological and stimulus-responsive properties, among others. The synthesis of substituted adamantanes and substituted higher diamondoids is frequently achieved via carbocation or radical intermediates that have unique stability and reactivity when compared to simple hydrocarbon derivatives. In this review, we discuss the wide range of radical-based functionalization reactions that directly convert diamondoid C-H bonds to C-C bonds, providing a variety of products incorporating diverse functional groups (alkenes, alkynes, arenes, carbonyl groups, etc.). Recent advances in the area of selective C-H functionalization are highlighted with an emphasis on the H-atom abstracting species and their ability to activate the particularly strong C-H bonds that are characteristic of these caged hydrocarbons, providing insights that can be applied to the C-H functionalization of other substrate classes.
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Affiliation(s)
- William K Weigel
- Chemistry, University of Iowa, Iow City, Iowa, USA.,University of California Riverside, Riverside, California, USA.
| | - Hoang T Dang
- Chemistry, University of Iowa, Iow City, Iowa, USA
| | - Abigail Feceu
- University of California Riverside, Riverside, California, USA.
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12
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Klein-Heßling C, Blockhaus T, Sünkel K. Serendipitous formation of the first η5-tricyanocyclopentadienyl complex. Crystal and molecular structures of [{C5H4-X(CN) }Mn(CO)2PPh3] (X = Br, CN; n = 1, 2). Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2021.120619] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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13
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De Jesus Silva J, Bartalucci N, Jelier B, Grosslight S, Gensch T, Schünemann C, Müller B, Kamer PCJ, Copéret C, Sigman MS, Togni A. Development and Molecular Understanding of a Pd‐Catalyzed Cyanation of Aryl Boronic Acids Enabled by High‐Throughput Experimentation and Data Analysis. Helv Chim Acta 2021. [DOI: 10.1002/hlca.202100200] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Jordan De Jesus Silva
- Department of Chemistry and Applied Biosciences ETH Zürich Vladimir-Prelog-Weg 1–5 CH-8093 Zürich Switzerland
| | - Niccolò Bartalucci
- Department of Chemistry and Applied Biosciences ETH Zürich Vladimir-Prelog-Weg 1–5 CH-8093 Zürich Switzerland
| | - Benson Jelier
- Department of Chemistry and Applied Biosciences ETH Zürich Vladimir-Prelog-Weg 1–5 CH-8093 Zürich Switzerland
| | - Samantha Grosslight
- Department of Chemistry University of Utah 315 South 1400 East Salt Lake City Utah 84112 United States
| | - Tobias Gensch
- Department of Chemistry University of Utah 315 South 1400 East Salt Lake City Utah 84112 United States
- Department of Chemistry TU Berlin Straße des 17. Juni 135 DE-10623 Berlin Germany
| | - Claas Schünemann
- Leibniz-Institute for Catalysis e. V. Albert-Einstein-Straße 29a DE-18059 Rostock Germany
| | - Bernd Müller
- Leibniz-Institute for Catalysis e. V. Albert-Einstein-Straße 29a DE-18059 Rostock Germany
| | - Paul C. J. Kamer
- Leibniz-Institute for Catalysis e. V. Albert-Einstein-Straße 29a DE-18059 Rostock Germany
| | - Christophe Copéret
- Department of Chemistry and Applied Biosciences ETH Zürich Vladimir-Prelog-Weg 1–5 CH-8093 Zürich Switzerland
| | - Matthew S. Sigman
- Department of Chemistry University of Utah 315 South 1400 East Salt Lake City Utah 84112 United States
| | - Antonio Togni
- Department of Chemistry and Applied Biosciences ETH Zürich Vladimir-Prelog-Weg 1–5 CH-8093 Zürich Switzerland
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14
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Kajiwara R, Hirano K, Miura M. Copper-mediated Regioselective C–H Cyanation of Phenols with Assistance of Bipyridine-type Bidentate Auxiliary. CHEM LETT 2021. [DOI: 10.1246/cl.210439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Rikuo Kajiwara
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Koji Hirano
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Masahiro Miura
- Innovative Catalysis Science Division, Institute for Open and Transdisciplinary Research Initiatives (ICS-OTRI), Osaka University, Suita, Osaka 565-0871, Japan
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15
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Affiliation(s)
- Youwen Xu
- Independent Consultant/Contractor 3900 Ford Road, Unit 18O Philadelphia PA USA
| | - Wenchao Qu
- Departments of Psychiatry and Chemistry Stony Brook University New York NY USA
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16
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Sarvi I, Zahedi E. Zinc Oxide/Graphene Oxide as a Robust Active Catalyst for Direct Oxidative Synthesis of Nitriles from Alcohols in Water. Catal Letters 2021. [DOI: 10.1007/s10562-021-03779-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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17
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Oliveira VP, Marcial BL, Machado FBC, Kraka E. Relating Bond Strength and Nature to the Thermodynamic Stability of Hypervalent Togni-Type Iodine Compounds. Chempluschem 2021; 86:1199-1210. [PMID: 34437775 DOI: 10.1002/cplu.202100285] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2021] [Revised: 08/09/2021] [Indexed: 11/08/2022]
Abstract
The bond strength and nature of a set of 32 Togni-like reagents have been investigated at the M062X/def2-TZVP(D) level of theory in acetonitrile described with the SMD continuum solvent model, to rationalize the main factors responsible for their thermodynamic stability in different conformations, and trifluoromethylation capabilities. For the assessment of bond strength, we utilized local stretching force constants and associated bond strength orders, complemented with local features of the electron density to access the nature of the bonds. Bond dissociation energies varied from 31.6 to 79.9 kcal/mol depending on the polarizing power of the ligand trans to CF3 . Based on the analysis of the Laplacian of the density, we propose that the charge-shift bond character plays an important role in the stability of the molecules studied, especially for those containing I-O bonds. New insights on the trans influence and on possible ways to fine-tune the stability of these reagents are provided.
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Affiliation(s)
- Vytor Pinheiro Oliveira
- Instituto Tecnológico de Aeronáutica (ITA), Departamento de Química, São José dos Campos, 12228-900, São Paulo, Brazil
| | - Bruna Luana Marcial
- Instituto Federal Goiano (IF Goiano), Núcleo de Química, Campus Morrinhos, Goiás, Brazil
| | - Francisco B C Machado
- Instituto Tecnológico de Aeronáutica (ITA), Departamento de Química, São José dos Campos, 12228-900, São Paulo, Brazil
| | - Elfi Kraka
- Computational and Theoretical Chemistry Group (CATCO), Department of Chemistry, Southern Methodist University, 3215 Daniel Ave, Dallas, Texas, 75275-0314, USA
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18
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Kim K, Lee S, Hong SH. Direct C(sp 3)-H Cyanation Enabled by a Highly Active Decatungstate Photocatalyst. Org Lett 2021; 23:5501-5505. [PMID: 34228456 DOI: 10.1021/acs.orglett.1c01846] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A highly efficient, direct C(sp3)-H cyanation was developed under mild photocatalytic conditions. The method enabled the direct cyanation of various C(sp3)-H substrates with excellent functional group tolerance. Notably, complex natural products and bioactive compounds were efficiently cyanated.
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Affiliation(s)
- Kunsoon Kim
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea.,Department of Chemistry, College of Natural Sciences, Seoul National University, Seoul 08826, Republic of Korea
| | - Seulchan Lee
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Soon Hyeok Hong
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
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19
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Mills LR, Edjoc RK, Rousseaux SAL. Design of an Electron-Withdrawing Benzonitrile Ligand for Ni-Catalyzed Cross-Coupling Involving Tertiary Nucleophiles. J Am Chem Soc 2021; 143:10422-10428. [PMID: 34197103 DOI: 10.1021/jacs.1c05281] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The design of new ligands for cross-coupling is essential for developing new catalytic reactions that access valuable products such as pharmaceuticals. In this report, we exploit the reactivity of nitrile-containing additives in Ni catalysis to design a benzonitrile-containing ligand for cross-coupling involving tertiary nucleophiles. Kinetic and Hammett studies are used to elucidate the role of the optimized ligand, which demonstrate that the benzonitrile moiety acts as an electron-acceptor to promote reductive elimination over β-hydride elimination and stabilize low-valent Ni. With these conditions, a protocol for decyanation-metalation and Ni-catalyzed arylation is conducted, enabling access to quaternary α-arylnitriles from disubstituted malononitriles.
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Affiliation(s)
- L Reginald Mills
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, ON M5S 3H6, Canada
| | - Racquel K Edjoc
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, ON M5S 3H6, Canada
| | - Sophie A L Rousseaux
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, ON M5S 3H6, Canada
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20
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Dasgupta A, Thiehoff C, Newman PD, Wirth T, Melen RL. Reactions promoted by hypervalent iodine reagents and boron Lewis acids. Org Biomol Chem 2021; 19:4852-4865. [PMID: 34019066 DOI: 10.1039/d1ob00740h] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Understanding the role of boranes in hypervalent iodine chemistry will open up new reactivities which can be utilised in organic synthesis. Due to similar reactivities, λ3-iodanes have presented themselves as viable alternatives for many transformations dominated by transition metals whilst mitigating some of the associated drawbacks of metal systems. As showcased by recent reports, boranes can adopt a dual role in hypervalent iodine chemistry that surpasses mere activation of the hypervalent iodine reagent. Increased efforts to harness this potential with diverse boranes will uncover exciting reactivity with high applicability across various disciplines including adoption in the pharmaceutical sciences. This review will be relevant to the wider synthetic community including organic, inorganic, materials, and medicinal chemists due to the versatility of hypervalent iodine chemistry especially in combination with borane activation or participation. We aim to highlight the development of hypervalent iodine compounds including their structure, bonding, synthesis and utility in metal-free organic synthesis in combination with Lewis acidic boranes.
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Affiliation(s)
- Ayan Dasgupta
- Cardiff University, School of Chemistry, Park Place, Main Building, Cardiff CF10 3AT, Cymru/Wales, UK.
| | - Christian Thiehoff
- Cardiff University, School of Chemistry, Park Place, Main Building, Cardiff CF10 3AT, Cymru/Wales, UK.
| | - Paul D Newman
- Cardiff University, School of Chemistry, Park Place, Main Building, Cardiff CF10 3AT, Cymru/Wales, UK.
| | - Thomas Wirth
- Cardiff University, School of Chemistry, Park Place, Main Building, Cardiff CF10 3AT, Cymru/Wales, UK.
| | - Rebecca L Melen
- Cardiff University, School of Chemistry, Park Place, Main Building, Cardiff CF10 3AT, Cymru/Wales, UK.
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21
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Wu D, Li C, Duan Y, Yin H, Chen FX. One-pot synthesis of 2-chloro-2-thio/selenocyanato ketones from β-keto acids. Org Chem Front 2021. [DOI: 10.1039/d1qo00405k] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The chlorothiocyanato difunctionalization reaction has been achieved, and a variety of α-chlorothio/selenocyanato difunctional ketones are synthesized through one-pot strategy from β-keto acids.
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Affiliation(s)
- Di Wu
- School of Chemistry & Chemical Engineering
- Beijing Institute of Technology (Liangxiang Campus)
- Beijing 102488
- China
| | - Chengcheng Li
- School of Chemistry & Chemical Engineering
- Beijing Institute of Technology (Liangxiang Campus)
- Beijing 102488
- China
| | - Yongjie Duan
- School of Chemistry & Chemical Engineering
- Beijing Institute of Technology (Liangxiang Campus)
- Beijing 102488
- China
| | - Hongquan Yin
- School of Chemistry & Chemical Engineering
- Beijing Institute of Technology (Liangxiang Campus)
- Beijing 102488
- China
| | - Fu-Xue Chen
- School of Chemistry & Chemical Engineering
- Beijing Institute of Technology (Liangxiang Campus)
- Beijing 102488
- China
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22
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Cheng HC, Guo PH, Ma JL, Hu XQ. Directing group strategies in catalytic sp2 C–H cyanations: scope, mechanism and limitations. Catal Sci Technol 2021. [DOI: 10.1039/d1cy00241d] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Directing group strategy in transition metal catalyzed sp2 C–H bond cyanation has contributed to the direct conversion of hydrocarbons to cyano-containing compounds. Recent developments in transition metal-mediated sp2 C–H bond cyanation using this strategy are reviewed.
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Affiliation(s)
- Hui-cheng Cheng
- College of Chemistry
- Guangdong University of Petrochemical Technology
- Maoming 525000
- PR China
| | - Peng-hu Guo
- College of Chemistry
- Guangdong University of Petrochemical Technology
- Maoming 525000
- PR China
| | - Jiao-li Ma
- College of Chemistry
- Guangdong University of Petrochemical Technology
- Maoming 525000
- PR China
| | - Xiao-Qiang Hu
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science
- School of Chemistry and Materials Science
- South-Central University for Nationalities
- Wuhan 430074
- China
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23
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Konarev DV, Kuzmin AV, Shestakov AF, Rompanen IA, Lyubovskaya RN. Reaction of Ga IIIClPc, Sn IVCl 2TPP and B IIIClSubPc with cyanide anions: reduction of macrocycles vs. formation of cyano-containing macrocyclic anions. Dalton Trans 2020; 49:16801-16812. [PMID: 33179677 DOI: 10.1039/d0dt03404e] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reaction of GaIIIClPc, SnIVCl2TPP and BIIIClSubPc containing phthalocyanine (Pc), tetraphenylporphyrin (TPP) and subphthalocyanine (SubPc) macrocycles with cyanide in the presence of cryptand[2.2.2] under anaerobic conditions yields crystalline salts in which cyano anions substitute chloride anions at GaIII, SnIV or BIII, as well as reducing the macrocycles or adding one or two CN- to them. The reaction of GaIIICl(Pc2-) with CN- yields {crypt(K+)}{GaIIICN(Pc˙3-)}˙-·0.5C6H4Cl2 (1) in which the Pc2- macrocycle is reduced to Pc˙3-. Such reduction could probably occur through the addition of CN- to Pc2- forming {GaIII(CN)[Pc(CN)]3-}- which can decompose further interacting with an excess of CN-. As a result, Pc˙3- and cyanogene anions are formed. The interaction of SnIVCl2(TPP2-) with CN- is accompanied by the addition of CN- to the meso-carbon atom of porphyrin forming diamagnetic TPP(CN)3- macrocycles in {crypt(K+)}{SnIV(CN)2[TPP(CN)]3-}- (2). Salt 2 shows a strong NIR absorption band with the maximum at 854 nm whose intensity is comparable with that of the Soret band. The interaction of BIIICl(SubPc2-) with three equivalents of CN- is accompanied by the addition of two CN- to carbon atoms of SubPc2- closest to meso-nitrogen atoms forming {BIII(CN)[SubPc(CN)2]4-}2-. Most probably these dianions transfer electrons to C6H4Cl2 producing the {BIII(CN)[SubPc(CN)2]˙3-}˙- radical anions which form σ-bonded diamagnetic dianions in {crypt(K+)}2{BIII(CN)[SubPc(CN)2]}22-·3C6H4Cl2 (3). The remaining carbon atom closest to the meso-nitrogen atom is involved in this dimerization. According to the calculations, the energy of the C-CN bond is minimal for {GaIII(CN)[Pc(CN)]3-}- enabling further transformation of these anions to {GaIIICN(Pc˙3-)}˙- in 1, whereas cyano-containing anions in 2 and 3 with higher energy of this bond are stable towards the elimination of CN. Optical and magnetic properties of 1-3 together with their crystal and molecular structures are presented. The possible ways of the formation of 1-3 are discussed based on DFT calculations.
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Affiliation(s)
- Dmitri V Konarev
- Institute of Problems of Chemical Physics RAS, Chernogolovka, Moscow region, 142432 Russia.
| | - Alexey V Kuzmin
- Institute of Solid State Physics RAS, Chernogolovka, Moscow region, 142432 Russia
| | - Alexander F Shestakov
- Institute of Problems of Chemical Physics RAS, Chernogolovka, Moscow region, 142432 Russia.
| | - Ivan A Rompanen
- Institute of Solid State Physics RAS, Chernogolovka, Moscow region, 142432 Russia and National Research University Higher School of Economics, Faculty of Physics, Moscow, Russia
| | - Rimma N Lyubovskaya
- Institute of Problems of Chemical Physics RAS, Chernogolovka, Moscow region, 142432 Russia.
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24
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El Anwar S, Růžičková Z, Bavol D, Fojt L, Grüner B. Tetrazole Ring Substitution at Carbon and Boron Sites of the Cobalt Bis(dicarbollide) Ion Available via Dipolar Cycloadditions. Inorg Chem 2020; 59:17430-17442. [DOI: 10.1021/acs.inorgchem.0c02719] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Suzan El Anwar
- The Institute of Inorganic Chemistry of the Czech Academy of Sciences, Řež 25068, Czech Republic
| | - Zdeňka Růžičková
- The Department of General and Inorganic Chemistry, Faculty of Chemical Technology, Studentská 573, University of Pardubice, Pardubice 53210, Czech Republic
| | - Dmytro Bavol
- The Institute of Inorganic Chemistry of the Czech Academy of Sciences, Řež 25068, Czech Republic
| | - Lukáš Fojt
- The Institute of Biophysics of the Academy of Sciences of the Czech Republic, v.v.i., Královopolská 135, Brno 61265, Czech Republic
| | - Bohumír Grüner
- The Institute of Inorganic Chemistry of the Czech Academy of Sciences, Řež 25068, Czech Republic
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25
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Abstract
This minireview aims to cover the developments over the past two decades in the chemistry of sulfonium salts. Specifically, insight is provided into the synthetic strategies available for the preparation of these compounds, the different reactivity patterns that are expected depending on their structural features or the reaction conditions applied, and the diversity of organic scaffolds that can thereby be synthesized. Additionally, the pros and cons derived from the use of sulfonium salts are presented and critically compared, when possible, in relation to reagents not based on sulfur but depicting similar reactivity.
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Affiliation(s)
- Sergei I. Kozhushkov
- Institut für Organische und Biomolekulare ChemieGeorg‐August‐Universität GöttingenTammannstr. 237077GöttingenGermany
| | - Manuel Alcarazo
- Institut für Organische und Biomolekulare ChemieGeorg‐August‐Universität GöttingenTammannstr. 237077GöttingenGermany
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26
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Zhang W, Yang W, Zhao W. Lewis Acid Mediated Electrophilic Cyanation of 2,2'-Biphenols. J Org Chem 2020; 85:8702-8713. [PMID: 32512992 DOI: 10.1021/acs.joc.0c00458] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
A Lewis acid mediated electrophilic cyanation of 2,2'-biphenols with a trifluoromethanesulfonyl (Tf) protecting group is reported. The cyanation reactions with less toxic, commercially available MeSCN as a cyanating reagent afforded a range of 3-cyan-2,2'-biphenols in moderate to high yields. The use of trifluoromethanesulfonyl (Tf) as a protecting group is crucial to the success of this transformation. Moreover, the cyanated products were readily transformed into various synthetically useful molecules. This protocol features high efficiency, excellent regioselectivity, and good functional group compatibility and may provide a practical tool for the synthesis and modification of biologically active compounds, catalysts, and ligands.
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Affiliation(s)
- Wu Zhang
- College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, People's Republic of China
| | - Wen Yang
- College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, People's Republic of China
| | - Wanxiang Zhao
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, People's Republic of China
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27
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Niknam E, Panahi F, Khalafi-Nezhad A. Palladium-Catalyzed Cyanation of Aryl Halides Using Formamide and Cyanuric Chloride as a New “CN” Source. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000117] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Esmaeil Niknam
- Department of Chemistry; College of Sciences; Shiraz University; 71454 Shiraz Iran
| | - Farhad Panahi
- Department of Chemistry; College of Sciences; Shiraz University; 71454 Shiraz Iran
| | - Ali Khalafi-Nezhad
- Department of Chemistry; College of Sciences; Shiraz University; 71454 Shiraz Iran
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28
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Zhang W, Lin JH, Zhang P, Xiao JC. A convenient reagent for the conversion of aldoximes into nitriles and isonitriles. Chem Commun (Camb) 2020; 56:6221-6224. [DOI: 10.1039/d0cc00188k] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Described herein is the convenient transformation of aldoximes into nitriles or isonitriles by slightly modifying reaction conditions.
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Affiliation(s)
- Wei Zhang
- Key Laboratory of Organofluorine Chemistry
- Shanghai Institute of Organic Chemistry
- University of Chinese Academy of Sciences
- Chinese Academy of Sciences
- Shanghai
| | - Jin-Hong Lin
- Key Laboratory of Organofluorine Chemistry
- Shanghai Institute of Organic Chemistry
- University of Chinese Academy of Sciences
- Chinese Academy of Sciences
- Shanghai
| | - Pengfei Zhang
- NHC Key Laboratory of Cancer Proteomics
- Department of Oncology
- Xiangya Hospital
- Central South University
- Changsha
| | - Ji-Chang Xiao
- Key Laboratory of Organofluorine Chemistry
- Shanghai Institute of Organic Chemistry
- University of Chinese Academy of Sciences
- Chinese Academy of Sciences
- Shanghai
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29
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Yu C, Ma X, Song Q. Palladium-catalyzed cyanation of aryl halides with in situ generated CN− from ClCF2H and NaNH2. Org Chem Front 2020. [DOI: 10.1039/d0qo00775g] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient Pd-catalyzed cyanation of aryl halides with in situ generated CN− anions is described.
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Affiliation(s)
- Changjiang Yu
- Institute of Next Generation Matter Transformation
- College of Chemical Engineering at Huaqiao University
- Xiamen
- P. R. China
| | - Xingxing Ma
- Institute of Next Generation Matter Transformation
- College of Chemical Engineering at Huaqiao University
- Xiamen
- P. R. China
| | - Qiuling Song
- Institute of Next Generation Matter Transformation
- College of Chemical Engineering at Huaqiao University
- Xiamen
- P. R. China
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30
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Xu T, Cao T, Feng Q, Huang S, Liao S. Metal-free dehydrosulfurization of thioamides to nitriles under visible light. Chem Commun (Camb) 2020; 56:5151-5153. [DOI: 10.1039/d0cc01380c] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A visible light-mediated dehydrosulfurization of thioamides to nitriles is demonstrated, using an organic dye as a photocatalyst and air as an oxidant.
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Affiliation(s)
- Tianxiao Xu
- Key Laboratory of Molecule Synthesis and Function Discovery
- College of Chemistry
- Fuzhou University
- Fuzhou 350116
- P. R. China
| | - Tianpeng Cao
- Key Laboratory of Molecule Synthesis and Function Discovery
- College of Chemistry
- Fuzhou University
- Fuzhou 350116
- P. R. China
| | - Qingyuan Feng
- Jiangsu Provincial Key Lab for the Chemistry and Utilization of Agro-Forest Biomass
- College of Chemical Engineering
- Nanjing Forestry University
- Nanjing
- P. R. China
| | - Shenlin Huang
- Jiangsu Provincial Key Lab for the Chemistry and Utilization of Agro-Forest Biomass
- College of Chemical Engineering
- Nanjing Forestry University
- Nanjing
- P. R. China
| | - Saihu Liao
- Key Laboratory of Molecule Synthesis and Function Discovery
- College of Chemistry
- Fuzhou University
- Fuzhou 350116
- P. R. China
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31
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Mills LR, Graham JM, Patel P, Rousseaux SAL. Ni-Catalyzed Reductive Cyanation of Aryl Halides and Phenol Derivatives via Transnitrilation. J Am Chem Soc 2019; 141:19257-19262. [DOI: 10.1021/jacs.9b11208] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- L. Reginald Mills
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, ON M5S 3H6, Canada
| | - Joshua M. Graham
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, ON M5S 3H6, Canada
| | - Purvish Patel
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, ON M5S 3H6, Canada
| | - Sophie A. L. Rousseaux
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, ON M5S 3H6, Canada
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32
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Mills LR, Rousseaux SA. A one-pot electrophilic cyanation–functionalization strategy for the synthesis of disubstituted malononitriles. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.05.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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33
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Alazet S, West MS, Patel P, Rousseaux SAL. Synthesis of Nitrile‐Bearing Quaternary Centers by an Equilibrium‐Driven Transnitrilation and Anion‐Relay Strategy. Angew Chem Int Ed Engl 2019; 58:10300-10304. [DOI: 10.1002/anie.201903215] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Revised: 05/07/2019] [Indexed: 11/12/2022]
Affiliation(s)
- Sébastien Alazet
- Davenport Research LaboratoriesDepartment of ChemistryUniversity of Toronto 80 St George Street Toronto Ontario M5S 3H6 Canada
| | - Michael S. West
- Davenport Research LaboratoriesDepartment of ChemistryUniversity of Toronto 80 St George Street Toronto Ontario M5S 3H6 Canada
| | - Purvish Patel
- Davenport Research LaboratoriesDepartment of ChemistryUniversity of Toronto 80 St George Street Toronto Ontario M5S 3H6 Canada
| | - Sophie A. L. Rousseaux
- Davenport Research LaboratoriesDepartment of ChemistryUniversity of Toronto 80 St George Street Toronto Ontario M5S 3H6 Canada
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34
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Alazet S, West MS, Patel P, Rousseaux SAL. Synthesis of Nitrile‐Bearing Quaternary Centers by an Equilibrium‐Driven Transnitrilation and Anion‐Relay Strategy. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201903215] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Sébastien Alazet
- Davenport Research LaboratoriesDepartment of ChemistryUniversity of Toronto 80 St George Street Toronto Ontario M5S 3H6 Canada
| | - Michael S. West
- Davenport Research LaboratoriesDepartment of ChemistryUniversity of Toronto 80 St George Street Toronto Ontario M5S 3H6 Canada
| | - Purvish Patel
- Davenport Research LaboratoriesDepartment of ChemistryUniversity of Toronto 80 St George Street Toronto Ontario M5S 3H6 Canada
| | - Sophie A. L. Rousseaux
- Davenport Research LaboratoriesDepartment of ChemistryUniversity of Toronto 80 St George Street Toronto Ontario M5S 3H6 Canada
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35
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Li X, Golz C, Alcarazo M. 5-(Cyano)dibenzothiophenium Triflate: A Sulfur-Based Reagent for Electrophilic Cyanation and Cyanocyclizations. Angew Chem Int Ed Engl 2019; 58:9496-9500. [PMID: 31091342 PMCID: PMC6618300 DOI: 10.1002/anie.201904557] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Indexed: 11/06/2022]
Abstract
The synthesis of 5-(cyano)dibenzothiophenium triflate 9, prepared by activation of dibenzo[b,d]thiophene-5-oxide with Tf2 O and subsequent reaction with TMSCN is reported, and its reactivity as electrophilic cyanation reagent evaluated. The scalable preparation, easy handling and broad substrate scope of the electrophilic cyanation promoted by 9, which includes amines, thiols, silyl enol ethers, alkenes, electron rich (hetero)arenes and polyaromatic hydrocarbons, illustrate the synthetic potential of this reagent. Importantly, Lewis acid activation of the reagent is not required for the transfer process. We additionally report herein biomimetic cyanocyclization cascade reactions, which are not promoted by typical electrophilic cyanation reagents, demonstrating the superior ability of 9 to trigger challenging transformations.
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Affiliation(s)
- Xiangdong Li
- Institut für Organische und Biomolekulare ChemieGeorg-August- Universität GöttingenTammannstr 237077-GöttingenGermany
| | - Christopher Golz
- Institut für Organische und Biomolekulare ChemieGeorg-August- Universität GöttingenTammannstr 237077-GöttingenGermany
| | - Manuel Alcarazo
- Institut für Organische und Biomolekulare ChemieGeorg-August- Universität GöttingenTammannstr 237077-GöttingenGermany
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36
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Li X, Golz C, Alcarazo M. 5‐(Cyano)dibenzothiophenium Triflate: A Sulfur‐Based Reagent for Electrophilic Cyanation and Cyanocyclizations. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201904557] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Xiangdong Li
- Institut für Organische und Biomolekulare ChemieGeorg-August- Universität Göttingen Tammannstr 2 37077- Göttingen Germany
| | - Christopher Golz
- Institut für Organische und Biomolekulare ChemieGeorg-August- Universität Göttingen Tammannstr 2 37077- Göttingen Germany
| | - Manuel Alcarazo
- Institut für Organische und Biomolekulare ChemieGeorg-August- Universität Göttingen Tammannstr 2 37077- Göttingen Germany
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37
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Mattalia JM, Nava P. C-C Bond Breaking in Addition-Elimination Reactions on Nitriles. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900119] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
| | - Paola Nava
- CNRS, Centrale Marseille, iSm2, Marseille; Aix-Marseille Univ; France
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38
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Hashemi AN, Eshghi H, Lamei K. Uniform silver nanoparticles on tunable porous N-doped carbon nanospheres for aerobic oxidative synthesis of aryl nitriles from benzylic alcohols. Appl Organomet Chem 2019. [DOI: 10.1002/aoc.4835] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Alireza Nemati Hashemi
- Department of Chemistry, Faculty of Science; Ferdowsi University of Mashhad; Mashhad 91775-1436 Iran
| | - Hossein Eshghi
- Department of Chemistry, Faculty of Science; Ferdowsi University of Mashhad; Mashhad 91775-1436 Iran
| | - Kamran Lamei
- Department of Chemistry, Faculty of Science; Ferdowsi University of Mashhad; Mashhad 91775-1436 Iran
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Abstract
The present review gives an overview over non-toxic cyanation agents and cyanide sources used in the synthesis of structurally diverse products containing the nitrile function. Nucleophilic as well as electrophilic agents/systems that transfer the entire CN-group were taken in consideration. Reactions in which a preexisting carbon functionality is transformed into a nitrile function by addition of nitrogen are however not covered here.
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Affiliation(s)
- Alexander M Nauth
- Institute of Organic Chemistry, Johannes Gutenberg University of Mainz, Duesbergweg 10-14, 55128 Mainz, Germany.
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40
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Li H, Zhang S, Yu X, Feng X, Yamamoto Y, Bao M. Rhodium(iii)-catalyzed aromatic C–H cyanation with dimethylmalononitrile as a cyanating agent. Chem Commun (Camb) 2019; 55:1209-1212. [DOI: 10.1039/c8cc08930b] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Safe, bench-stable, and commercially available DMMN was used as a cyanating reagent in Rh(iii)-catalyzed aromatic C–H bond direct cyanation in the presence of copper oxide as a promotor.
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Affiliation(s)
- He Li
- State Key Laboratory of Fine Chemicals, Dalian University of Technology
- Dalian 116023
- China
| | - Sheng Zhang
- State Key Laboratory of Fine Chemicals, Dalian University of Technology
- Dalian 116023
- China
| | - Xiaoqiang Yu
- State Key Laboratory of Fine Chemicals, Dalian University of Technology
- Dalian 116023
- China
| | - Xiujuan Feng
- State Key Laboratory of Fine Chemicals, Dalian University of Technology
- Dalian 116023
- China
| | - Yoshinori Yamamoto
- State Key Laboratory of Fine Chemicals, Dalian University of Technology
- Dalian 116023
- China
- WPI-Advanced Institute for Materials Research, Tohoku University
- Sendai 980-8577
| | - Ming Bao
- State Key Laboratory of Fine Chemicals, Dalian University of Technology
- Dalian 116023
- China
- School of Petroleum and Chemical Engineering, Dalian University of Technology
- Panjin 124221
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42
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Kiyokawa K, Hata S, Kainuma S, Minakata S. Electrophilic cyanation of allylic boranes: synthesis of β,γ-unsaturated nitriles containing allylic quaternary carbon centers. Chem Commun (Camb) 2019; 55:458-461. [DOI: 10.1039/c8cc09229j] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The electrophilic cyanation of allylic boranes, a process that enables the construction of allylic quaternary carbon centers, is reported.
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Affiliation(s)
- Kensuke Kiyokawa
- Department of Applied Chemistry
- Graduate School of Engineering
- Osaka University
- Yamadaoka 2-1, Suita
- Osaka 565-0871
| | - Shotaro Hata
- Department of Applied Chemistry
- Graduate School of Engineering
- Osaka University
- Yamadaoka 2-1, Suita
- Osaka 565-0871
| | - Shunpei Kainuma
- Department of Applied Chemistry
- Graduate School of Engineering
- Osaka University
- Yamadaoka 2-1, Suita
- Osaka 565-0871
| | - Satoshi Minakata
- Department of Applied Chemistry
- Graduate School of Engineering
- Osaka University
- Yamadaoka 2-1, Suita
- Osaka 565-0871
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43
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Havel S, Khirsariya P, Akavaram N, Paruch K, Carbain B. Preparation of 3,4-Substituted-5-Aminopyrazoles and 4-Substituted-2-Aminothiazoles. J Org Chem 2018; 83:15380-15405. [DOI: 10.1021/acs.joc.8b02655] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Stepan Havel
- Department of Chemistry, CZ Openscreen, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
- International Clinical Research Center, St. Anne’s University Hospital Brno, Pekařská 53, 656 91 Brno, Czech Republic
| | - Prashant Khirsariya
- Department of Chemistry, CZ Openscreen, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
- International Clinical Research Center, St. Anne’s University Hospital Brno, Pekařská 53, 656 91 Brno, Czech Republic
| | - Naresh Akavaram
- Department of Chemistry, CZ Openscreen, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
- International Clinical Research Center, St. Anne’s University Hospital Brno, Pekařská 53, 656 91 Brno, Czech Republic
| | - Kamil Paruch
- Department of Chemistry, CZ Openscreen, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
- International Clinical Research Center, St. Anne’s University Hospital Brno, Pekařská 53, 656 91 Brno, Czech Republic
| | - Benoit Carbain
- Department of Chemistry, CZ Openscreen, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
- International Clinical Research Center, St. Anne’s University Hospital Brno, Pekařská 53, 656 91 Brno, Czech Republic
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Vilím J, Knaus T, Mutti FG. Catalytic Promiscuity of Galactose Oxidase: A Mild Synthesis of Nitriles from Alcohols, Air, and Ammonia. Angew Chem Int Ed Engl 2018; 57:14240-14244. [PMID: 30176101 PMCID: PMC6220830 DOI: 10.1002/anie.201809411] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Indexed: 11/26/2022]
Abstract
We report an unprecedented catalytically promiscuous activity of the copper-dependent enzyme galactose oxidase. The enzyme catalyses the one-pot conversion of alcohols into the related nitriles under mild reaction conditions in ammonium buffer, consuming ammonia as the source of nitrogen and dioxygen (from air at atmospheric pressure) as the only oxidant. Thus, this green method does not require either cyanide salts, toxic metals, or undesired oxidants in stoichiometric amounts. The substrate scope of the reaction includes benzyl and cinnamyl alcohols as well as 4- and 3-pyridylmethanol, giving access to valuable chemical compounds. The oxidation proceeds through oxidation from alcohol to aldehyde, in situ imine formation, and final direct oxidation to nitrile.
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Affiliation(s)
- Jan Vilím
- Van't Hoff Institute for Molecular Sciences, HIMS-BiocatUniversity of AmsterdamScience Park 9041098 XHAmsterdamThe Netherlands
| | - Tanja Knaus
- Van't Hoff Institute for Molecular Sciences, HIMS-BiocatUniversity of AmsterdamScience Park 9041098 XHAmsterdamThe Netherlands
| | - Francesco G. Mutti
- Van't Hoff Institute for Molecular Sciences, HIMS-BiocatUniversity of AmsterdamScience Park 9041098 XHAmsterdamThe Netherlands
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45
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Vilím J, Knaus T, Mutti FG. Catalytic Promiscuity of Galactose Oxidase: A Mild Synthesis of Nitriles from Alcohols, Air, and Ammonia. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201809411] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Jan Vilím
- Van't Hoff Institute for Molecular Sciences, HIMS-Biocat; University of Amsterdam; Science Park 904 1098 XH Amsterdam The Netherlands
| | - Tanja Knaus
- Van't Hoff Institute for Molecular Sciences, HIMS-Biocat; University of Amsterdam; Science Park 904 1098 XH Amsterdam The Netherlands
| | - Francesco G. Mutti
- Van't Hoff Institute for Molecular Sciences, HIMS-Biocat; University of Amsterdam; Science Park 904 1098 XH Amsterdam The Netherlands
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46
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Karmaker PG, Qiu J, Wu D, Zhang S, Yin H, Chen FX. Improved organocatalytic electrophilic α-cyanation of β-keto amides with 1-cyanato-4-nitrobenzene. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.04.032] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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47
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Sun MX, Wang YF, Xu BH, Ma XQ, Zhang SJ. A metal-free direct C (sp3)–H cyanation reaction with cyanobenziodoxolones. Org Biomol Chem 2018; 16:1971-1975. [DOI: 10.1039/c8ob00173a] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Metal-free direct C(sp3)–H cyanation reaction: cyanobenziodoxolones as cyanating reagents and oxidants.
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Affiliation(s)
- Ming-Xue Sun
- College of Chemistry and Chemical Engineering
- Henan University
- Henan Engineering Research Center of Resource & Energy Recovery from Waste
- Kaifeng 475004
- P.R. China
| | - Yao-Feng Wang
- CAS Key Laboratory of Green Process and Engineering
- Beijing Key Laboratory of Ionic Liquids Clean Process
- State Key Laboratory of Multiphase Complex Systems
- Institute of Process Engineering
- Chinese Academy of Sciences
| | - Bao-Hua Xu
- CAS Key Laboratory of Green Process and Engineering
- Beijing Key Laboratory of Ionic Liquids Clean Process
- State Key Laboratory of Multiphase Complex Systems
- Institute of Process Engineering
- Chinese Academy of Sciences
| | - Xin-Qi Ma
- College of Chemistry and Chemical Engineering
- Henan University
- Henan Engineering Research Center of Resource & Energy Recovery from Waste
- Kaifeng 475004
- P.R. China
| | - Suo-Jiang Zhang
- CAS Key Laboratory of Green Process and Engineering
- Beijing Key Laboratory of Ionic Liquids Clean Process
- State Key Laboratory of Multiphase Complex Systems
- Institute of Process Engineering
- Chinese Academy of Sciences
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48
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Chaitanya M, Anbarasan P. Recent developments and applications of cyanamides in electrophilic cyanation. Org Biomol Chem 2018; 16:7084-7103. [DOI: 10.1039/c8ob01770k] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
This review summarizes the recent developments and applications of readily accessible cyanamides in the electrophilic cyanation of various nucleophiles.
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Affiliation(s)
- Manthena Chaitanya
- Department of Chemistry
- Indian Institute of Technology Madras
- Chennai-600036
- India
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49
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Affiliation(s)
- Guobing Yan
- Department of Chemistry; Lishui University; Lishui Zhejiang 323000 People's Republic of China
| | - Yan Zhang
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education; College of Chemistry; Peking University; Beijing 100871 People's Republic of China
| | - Jianbo Wang
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education; College of Chemistry; Peking University; Beijing 100871 People's Republic of China
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50
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Ayres JN, Ashford MW, Stöckl Y, Prudhomme V, Ling KB, Platts JA, Morrill LC. Deoxycyanamidation of Alcohols with N-Cyano-N-phenyl-p-methylbenzenesulfonamide (NCTS). Org Lett 2017; 19:3835-3838. [DOI: 10.1021/acs.orglett.7b01710] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- James N. Ayres
- School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff, CF10 3AT, U.K
| | - Matthew W. Ashford
- School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff, CF10 3AT, U.K
| | - Yannick Stöckl
- School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff, CF10 3AT, U.K
| | - Vassili Prudhomme
- School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff, CF10 3AT, U.K
| | - Kenneth B. Ling
- Syngenta,
Jealott’s
Hill International Research Centre, Bracknell, Berkshire RG42 6EY, U.K
| | - James A. Platts
- School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff, CF10 3AT, U.K
| | - Louis C. Morrill
- School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff, CF10 3AT, U.K
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