1
|
Liu W, Liu C, Wang M, Kong W. Modular Synthesis of Multifunctionalized CF 3-Allenes through Selective Activation of Saturated Hydrocarbons. ACS Catal 2022. [DOI: 10.1021/acscatal.2c01521] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Wenfeng Liu
- The Institute for Advanced Studies, Wuhan University, Wuhan 430072, P. R. China
| | - Chuhan Liu
- The Institute for Advanced Studies, Wuhan University, Wuhan 430072, P. R. China
| | - Minyan Wang
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China
| | - Wangqing Kong
- The Institute for Advanced Studies, Wuhan University, Wuhan 430072, P. R. China
| |
Collapse
|
2
|
Li Z, Li C, Ding Y, Huo H. Photoinduced nickel-catalyzed enantioselective coupling reactions. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2022.214479] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
|
3
|
Tay NES, Lehnherr D, Rovis T. Photons or Electrons? A Critical Comparison of Electrochemistry and Photoredox Catalysis for Organic Synthesis. Chem Rev 2022; 122:2487-2649. [PMID: 34751568 PMCID: PMC10021920 DOI: 10.1021/acs.chemrev.1c00384] [Citation(s) in RCA: 143] [Impact Index Per Article: 71.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Redox processes are at the heart of synthetic methods that rely on either electrochemistry or photoredox catalysis, but how do electrochemistry and photoredox catalysis compare? Both approaches provide access to high energy intermediates (e.g., radicals) that enable bond formations not constrained by the rules of ionic or 2 electron (e) mechanisms. Instead, they enable 1e mechanisms capable of bypassing electronic or steric limitations and protecting group requirements, thus enabling synthetic chemists to disconnect molecules in new and different ways. However, while providing access to similar intermediates, electrochemistry and photoredox catalysis differ in several physical chemistry principles. Understanding those differences can be key to designing new transformations and forging new bond disconnections. This review aims to highlight these differences and similarities between electrochemistry and photoredox catalysis by comparing their underlying physical chemistry principles and describing their impact on electrochemical and photochemical methods.
Collapse
Affiliation(s)
- Nicholas E. S. Tay
- Department of Chemistry, Columbia University, New York, New York, 10027, United States
| | - Dan Lehnherr
- Process Research and Development, Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | - Tomislav Rovis
- Department of Chemistry, Columbia University, New York, New York, 10027, United States
| |
Collapse
|
4
|
Zhang W, Shu X, Huan L, Cheng B, Huo H. Enantioselective β-C(sp 3)-H arylation of amides via synergistic nickel and photoredox catalysis. Org Biomol Chem 2021; 19:9407-9409. [PMID: 34708852 DOI: 10.1039/d1ob01774h] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An enantioselective benzylic β-C(sp3)-H arylation of amides via synergistic nickel and photoredox catalysis is reported. The C-H bond is activated by a bromine-radical-mediated C-H cleavage. This mild yet straightforward protocol provides arylation products in up to 96% yield and with up to 95% ee.
Collapse
Affiliation(s)
- Wu Zhang
- Key Laboratory of Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, P. R. China.
| | - Xiaomin Shu
- Key Laboratory of Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, P. R. China.
| | - Leitao Huan
- Key Laboratory of Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, P. R. China.
| | - Buqing Cheng
- Key Laboratory of Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, P. R. China.
| | - Haohua Huo
- Key Laboratory of Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, P. R. China.
| |
Collapse
|
5
|
Ju L, Lin Q, LiBretto NJ, Wagner CL, Hu CT, Miller JT, Diao T. Reactivity of (bi-Oxazoline)organonickel Complexes and Revision of a Catalytic Mechanism. J Am Chem Soc 2021; 143:14458-14463. [PMID: 34463481 DOI: 10.1021/jacs.1c07139] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Bi-Oxazoline (biOx) has emerged as an effective ligand framework for promoting nickel-catalyzed cross-coupling, cross-electrophile coupling, and photoredox-nickel dual catalytic reactions. This report fills the knowledge gap of the organometallic reactivity of (biOx)Ni complexes, including catalyst reduction, oxidative electrophile activation, radical capture, and reductive elimination. The biOx ligand displays no redox activity in (biOx)Ni(I) complexes, in contrast to other chelating imine and oxazoline ligands. The lack of ligand redox activity results in more negative reduction potentials of (biOx)Ni(II) complexes and accounts for the inability of zinc and manganese to reduce (biOx)Ni(II) species. On the basis of these results, we revise the formerly proposed "sequential reduction" mechanism of a (biOx)Ni-catalyzed cross-electrophile coupling reaction by excluding catalyst reduction steps.
Collapse
Affiliation(s)
- Luchuan Ju
- Department of Chemistry, New York University, 100 Washington Square East, New York, New York 10003, United States
| | - Qiao Lin
- Department of Chemistry, New York University, 100 Washington Square East, New York, New York 10003, United States
| | - Nicole J LiBretto
- Department of Chemical Engineering, Purdue University, 480 Stadium Mall Drive, West Lafayette, Indiana 47906, United States
| | - Clifton L Wagner
- Department of Chemistry, New York University, 100 Washington Square East, New York, New York 10003, United States
| | - Chunhua Tony Hu
- Department of Chemistry, New York University, 100 Washington Square East, New York, New York 10003, United States
| | - Jeffrey T Miller
- Department of Chemical Engineering, Purdue University, 480 Stadium Mall Drive, West Lafayette, Indiana 47906, United States
| | - Tianning Diao
- Department of Chemistry, New York University, 100 Washington Square East, New York, New York 10003, United States
| |
Collapse
|
6
|
Abstract
Despite recent advancements in the selective generation and coupling of organic radical species, the alkoxycarbonyl radical remains underexplored relative to other carbon-containing radical species. Drawing inspiration from new strategies for generating acyl radical equivalents utilizing dual N-heterocyclic carbene catalysis and photocatalysis, we have prepared dimethylimidazolium esters that can function as an alkoxycarbonyl radical surrogate under photocatalytic conditions. We demonstrate the synthetic utility of these azolium-based partners through the preparation of esters arising from the coupling of this radical surrogate with an oxidatively generated alkyl radical.
Collapse
Affiliation(s)
- Joshua L Zhu
- Department of Chemistry, Northwestern University, Evanston, IL 60208, United States
| | - Karl A Scheidt
- Department of Chemistry, Northwestern University, Evanston, IL 60208, United States
| |
Collapse
|
7
|
Yamamoto Y, Takase T, Kuroyanagi E, Yasui T. Synthesis of difluoromethylated diarylmethanes via Fe(OTf) 3-catalyzed Friedel-Crafts reaction of 2,2-difluoro-1-arylethyl phosphates. Chem Commun (Camb) 2021; 57:3877-3880. [PMID: 33871534 DOI: 10.1039/d1cc00765c] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The Fe(OTf)3-catalyzed Friedel-Crafts reaction of 2,2-difluoro-1-arylethyl phosphates with electron-rich (hetero)arenes afforded difluoromethylated diarylmethanes. Control experiments showed that Fe(OTf)3 behaves as the Lewis acid, and that the phosphate leaving group and o- or p-alkoxy substituents on the substrates are necessary for the Fe(OTf)3-catalyzed reaction to proceed under mild conditions.
Collapse
Affiliation(s)
- Yoshihiko Yamamoto
- Department of Basic Medicinal Sciences, Graduate School of Pharmaceutical Sciences, Nagoya University, Chikusa, Nagoya 464-8601, Japan.
| | - Tomoya Takase
- Department of Basic Medicinal Sciences, Graduate School of Pharmaceutical Sciences, Nagoya University, Chikusa, Nagoya 464-8601, Japan.
| | - Eisuke Kuroyanagi
- Department of Basic Medicinal Sciences, Graduate School of Pharmaceutical Sciences, Nagoya University, Chikusa, Nagoya 464-8601, Japan.
| | - Takeshi Yasui
- Department of Basic Medicinal Sciences, Graduate School of Pharmaceutical Sciences, Nagoya University, Chikusa, Nagoya 464-8601, Japan.
| |
Collapse
|
8
|
Varenikov A, Shapiro E, Gandelman M. Synthesis of Chiral α-CF 3-Substituted Benzhydryls via Cross-Coupling Reaction of Aryltitanates. Org Lett 2020; 22:9386-9391. [PMID: 33210926 DOI: 10.1021/acs.orglett.0c03673] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
We describe a highly efficient approach toward α-CF3-substituted benzhydryls thanks to the employment of organotitanium(IV) based nucleophiles. The use of commercially available anesthetic halothane as a cheap fluorinated building block in a sequential one-pot nickel-catalyzed enantioselective cross-coupling reaction of aryl titanates allowed for the synthesis of chiral α-CF3-substituted benzhydryls in good yields and excellent enantioselectivities. Alternatively, α-CF3-benzyl bromides could be employed under similar conditions to obtain the same family of compounds in higher yields and excellent selectivities. A benzhydryl moiety is a common motif in many biologically active compounds, and their enantioenriched fluorinated analogs should be of great interest in the search for novel drugs and agrochemicals.
Collapse
Affiliation(s)
- Andrii Varenikov
- Schulich Faculty of Chemistry, Technion - Israel Institute of Technology, Technion City, Haifa 3200008, Israel
| | - Evgeny Shapiro
- Schulich Faculty of Chemistry, Technion - Israel Institute of Technology, Technion City, Haifa 3200008, Israel
| | - Mark Gandelman
- Schulich Faculty of Chemistry, Technion - Israel Institute of Technology, Technion City, Haifa 3200008, Israel
| |
Collapse
|
9
|
Liu H, Li Y, Wang DX, Sun MM, Feng C. Visible-Light-Promoted Regioselective 1,3-Fluoroallylation of gem-Difluorocyclopropanes. Org Lett 2020; 22:8681-8686. [PMID: 33112624 DOI: 10.1021/acs.orglett.0c03268] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
A strategically novel protocol for ring-opening functionalization of aryl gem-difluorocyclopropanes (F2CPs), which allows an expedient construction of CF3-containing architectures via visible-light-promoted F-nucleophilic attack manifold, was disclosed. Single electron oxidation of F2CPs was ascribed as the critical step for the success of this transformation by prompting F-nucleophilic attack, as well as the ensuing C-C bond scission. The observed intriguing regioselectivity for fluoroincorporation in this reaction was rationalized by invoking the cation-stabilization property of gem-difluorine substituents and also the thermodynamic gains acquired from forming CF3 functionality. By using cost-effective fluorination reagent and readily available substrates, a broad collection of structurally diversified α-allyl-β-trifluoromethyl ethylbenzene derivatives could be obtained in generally good yields. Further mechanistic investigations proved the engagement of a benzylic radical intermediate in this transformation.
Collapse
Affiliation(s)
- Haidong Liu
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis (IAS), School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, People's Republic of China
| | - Yi Li
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis (IAS), School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, People's Republic of China
| | - Ding-Xing Wang
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis (IAS), School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, People's Republic of China
| | - Meng-Meng Sun
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis (IAS), School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, People's Republic of China
| | - Chao Feng
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis (IAS), School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, People's Republic of China
| |
Collapse
|
10
|
Kuang C, Zhou X, Xie Q, Ni C, Gu Y, Hu J. Generation of Carbocations under Photoredox Catalysis: Electrophilic Aromatic Substitution with 1-Fluoroalkylbenzyl Bromides. Org Lett 2020; 22:8670-8675. [PMID: 33095022 DOI: 10.1021/acs.orglett.0c03258] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A novel Friedel-Crafts-type alkylation of arenes to access valuable 1-fluoroalkyl-1,1-biaryl compounds is established under mild conditions. The key to success is the efficient generation of a destabilized benzylic carbocation intermediate via two consecutive single-electron transfer processes by virtue of visible-light photoredox catalysis. This unique activation pattern avoids using strong Lewis acids and high temperatures that are required for generation of destabilized carbocations in traditional Friedel-Crafts reactions. This protocol demonstrates the first example of photoredox-catalyzed heterolysis of electronically deactivated benzylic C-Br bonds for the formation of destabilized carbocation intermediates.
Collapse
Affiliation(s)
- Cuiwen Kuang
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Ling-Ling Road, Shanghai 200032, China
| | - Xin Zhou
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Ling-Ling Road, Shanghai 200032, China
| | - Qiqiang Xie
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Ling-Ling Road, Shanghai 200032, China
| | - Chuanfa Ni
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Ling-Ling Road, Shanghai 200032, China
| | - Yucheng Gu
- Syngenta, Jealott's Hill International Research Centre, Bracknell, Berkshire RG42 6EY, U.K
| | - Jinbo Hu
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Ling-Ling Road, Shanghai 200032, China
| |
Collapse
|
11
|
Lin T, Pan Z, Tu Y, Zhu S, Wu H, Liu Y, Li Z, Zhang J. Design and Synthesis of TY‐Phos and Application in Palladium‐Catalyzed Enantioselective Fluoroarylation of
gem
‐Difluoroalkenes. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202008262] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Tao‐Yan Lin
- Department of Chemistry Fudan University 2005 Songhu Road Shanghai 200438 China
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes School of Chemistry and Molecular Engineering East China Normal University Shanghai 200062 China
| | - Zhangjin Pan
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes School of Chemistry and Molecular Engineering East China Normal University Shanghai 200062 China
| | - Youshao Tu
- College of Chemistry and Life Science Advanced Institute of Materials Science Changchun University of Technology Changchun 130012 China
| | - Shuai Zhu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes School of Chemistry and Molecular Engineering East China Normal University Shanghai 200062 China
| | - Hai‐Hong Wu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes School of Chemistry and Molecular Engineering East China Normal University Shanghai 200062 China
| | - Yu Liu
- College of Chemistry and Life Science Advanced Institute of Materials Science Changchun University of Technology Changchun 130012 China
| | - Zhiming Li
- Department of Chemistry Fudan University 2005 Songhu Road Shanghai 200438 China
| | - Junliang Zhang
- Department of Chemistry Fudan University 2005 Songhu Road Shanghai 200438 China
| |
Collapse
|
12
|
Lin TY, Pan Z, Tu Y, Zhu S, Wu HH, Liu Y, Li Z, Zhang J. Design and Synthesis of TY-Phos and Application in Palladium-Catalyzed Enantioselective Fluoroarylation of gem-Difluoroalkenes. Angew Chem Int Ed Engl 2020; 59:22957-22962. [PMID: 32893388 DOI: 10.1002/anie.202008262] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Revised: 08/07/2020] [Indexed: 01/10/2023]
Abstract
The first example of highly enantioselective fluoroarylation of gem-difluoroalkenes with aryl halides is presented by using a new chiral sulfinamide phosphine (Sadphos) type ligand TY-Phos. N-Me-TY-Phos can be easily synthesized on a gram scale from readily available starting materials in three steps. Salient features of this work including readily available starting materials, good yields, high enantioselectivities as well as broad substrate scope make this approach very practical and attractive. Notably, the asymmetric synthesis of an analogue of a biologically active molecule is also reported.
Collapse
Affiliation(s)
- Tao-Yan Lin
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai, 200438, China.,Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200062, China
| | - Zhangjin Pan
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200062, China
| | - Youshao Tu
- College of Chemistry and Life Science, Advanced Institute of Materials Science, Changchun University of Technology, Changchun, 130012, China
| | - Shuai Zhu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200062, China
| | - Hai-Hong Wu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200062, China
| | - Yu Liu
- College of Chemistry and Life Science, Advanced Institute of Materials Science, Changchun University of Technology, Changchun, 130012, China
| | - Zhiming Li
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai, 200438, China
| | - Junliang Zhang
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai, 200438, China
| |
Collapse
|
13
|
Lipp A, Badir SO, Molander GA. Stereoinduktion in der Metallaphotoredoxkatalyse. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202007668] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Alexander Lipp
- Department of Chemistry Roy and Diana Vagelos Laboratories University of Pennsylvania 231 S. 34th Street Philadelphia PA 19104-6323 USA
| | - Shorouk O. Badir
- Department of Chemistry Roy and Diana Vagelos Laboratories University of Pennsylvania 231 S. 34th Street Philadelphia PA 19104-6323 USA
| | - Gary A. Molander
- Department of Chemistry Roy and Diana Vagelos Laboratories University of Pennsylvania 231 S. 34th Street Philadelphia PA 19104-6323 USA
| |
Collapse
|
14
|
Lipp A, Badir SO, Molander GA. Stereoinduction in Metallaphotoredox Catalysis. Angew Chem Int Ed Engl 2020; 60:1714-1726. [PMID: 32677341 DOI: 10.1002/anie.202007668] [Citation(s) in RCA: 143] [Impact Index Per Article: 35.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Indexed: 11/07/2022]
Abstract
Metallaphotoredox catalysis has evolved into an enabling platform to construct C(sp3 )-hybridized centers under remarkably mild reaction conditions. The cultivation of abundant radical precursor feedstocks has significantly increased the scope of transition-metal-catalyzed cross-couplings, especially with respect to C(sp2 )-C(sp3 ) linkages. In recent years, considerable effort has been devoted to understanding the origin of stereoinduction in dual catalytic processes. In this context, Ni- and Cu-catalyzed transformations have played a predominant role exploiting this mode of catalysis. Herein, we provide a critical overview on recent progress in enantioselective bond formations enabled by Ni- and Cu-catalyzed manifolds. Furthermore, selected stereochemical control elements within the realm of diastereoselective transformations are discussed.
Collapse
Affiliation(s)
- Alexander Lipp
- Department of Chemistry, Roy and Diana Vagelos Laboratories, University of Pennsylvania, 231 S. 34th Street, Philadelphia, PA, 19104-6323, USA
| | - Shorouk O Badir
- Department of Chemistry, Roy and Diana Vagelos Laboratories, University of Pennsylvania, 231 S. 34th Street, Philadelphia, PA, 19104-6323, USA
| | - Gary A Molander
- Department of Chemistry, Roy and Diana Vagelos Laboratories, University of Pennsylvania, 231 S. 34th Street, Philadelphia, PA, 19104-6323, USA
| |
Collapse
|
15
|
André‐Joyaux E, Kuzovlev A, Tappin NDC, Renaud P. A General Approach to Deboronative Radical Chain Reactions with Pinacol Alkylboronic Esters. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202004012] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Emy André‐Joyaux
- University of Bern Department of Chemistry and Biochemistry Freiestrasse 3 3012 Bern Switzerland
| | - Andrey Kuzovlev
- University of Bern Department of Chemistry and Biochemistry Freiestrasse 3 3012 Bern Switzerland
| | - Nicholas D. C. Tappin
- University of Bern Department of Chemistry and Biochemistry Freiestrasse 3 3012 Bern Switzerland
| | - Philippe Renaud
- University of Bern Department of Chemistry and Biochemistry Freiestrasse 3 3012 Bern Switzerland
| |
Collapse
|
16
|
André‐Joyaux E, Kuzovlev A, Tappin NDC, Renaud P. A General Approach to Deboronative Radical Chain Reactions with Pinacol Alkylboronic Esters. Angew Chem Int Ed Engl 2020; 59:13859-13864. [DOI: 10.1002/anie.202004012] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 04/23/2020] [Indexed: 11/11/2022]
Affiliation(s)
- Emy André‐Joyaux
- University of Bern Department of Chemistry and Biochemistry Freiestrasse 3 3012 Bern Switzerland
| | - Andrey Kuzovlev
- University of Bern Department of Chemistry and Biochemistry Freiestrasse 3 3012 Bern Switzerland
| | - Nicholas D. C. Tappin
- University of Bern Department of Chemistry and Biochemistry Freiestrasse 3 3012 Bern Switzerland
| | - Philippe Renaud
- University of Bern Department of Chemistry and Biochemistry Freiestrasse 3 3012 Bern Switzerland
| |
Collapse
|
17
|
Zhu C, Yue H, Chu L, Rueping M. Recent advances in photoredox and nickel dual-catalyzed cascade reactions: pushing the boundaries of complexity. Chem Sci 2020; 11:4051-4064. [PMID: 32864080 PMCID: PMC7424772 DOI: 10.1039/d0sc00712a] [Citation(s) in RCA: 195] [Impact Index Per Article: 48.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Accepted: 03/23/2020] [Indexed: 12/22/2022] Open
Abstract
Cascade reactions that produce multiple chemical bonds in one synthetic operation are important in the efficient construction of complex molecules. In addition, photoredox and nickel dual catalysis opens a new and powerful avenue for transition-metal-catalyzed cross-coupling reactions. By combining these two concepts, photoredox and nickel dual-catalyzed cascade reactions have been recently established, and they provide an efficient and mild method for accessing a series of valuable organic compounds.
Collapse
Affiliation(s)
- Chen Zhu
- KAUST Catalysis Center , KCC , King Abdullah University of Science and Technology , KAUST , Thuwal 23955-6900 , Saudi Arabia .
| | - Huifeng Yue
- KAUST Catalysis Center , KCC , King Abdullah University of Science and Technology , KAUST , Thuwal 23955-6900 , Saudi Arabia .
| | - Lingling Chu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials , Center for Advanced Low-Dimension Materials , College of Chemistry , Chemical Engineering and Biotechnology , Donghua University , Shanghai 201620 , China .
| | - Magnus Rueping
- KAUST Catalysis Center , KCC , King Abdullah University of Science and Technology , KAUST , Thuwal 23955-6900 , Saudi Arabia .
| |
Collapse
|
18
|
VanHeyst MD, Qi J, Roecker AJ, Hughes JME, Cheng L, Zhao Z, Yin J. Continuous Flow-Enabled Synthesis of Bench-Stable Bicyclo[1.1.1]pentane Trifluoroborate Salts and Their Utilization in Metallaphotoredox Cross-Couplings. Org Lett 2020; 22:1648-1654. [PMID: 31990565 DOI: 10.1021/acs.orglett.0c00242] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Bicyclo[1.1.1]pentane motifs have gained increasing popularity in medicinal chemistry as bioisosteres because of their ability to impact key physicochemical properties. However, reports of direct C(sp2)-C(sp3) cross-coupling of these fragments to afford biaryl isosteres have been scarce. Herein we describe the development of continuous flow-enabled synthesis of bench-stable bicyclo[1.1.1]pentane trifluoroborate salts. Furthermore, we demonstrate the use of metallaphotoredox conditions to enable cross-coupling of these building blocks with complex aryl halide substrates.
Collapse
Affiliation(s)
- Michael D VanHeyst
- Discovery Chemistry , Merck & Co., Inc. , West Point , Pennsylvania 19486 , United States
| | - Ji Qi
- Department of Process Research and Development , Merck & Co., Inc. , Rahway , New Jersey 07065 , United States.,Process Research and Development , MSD R&D (China) Co., Ltd. , Building 21 Rongda Road , Wangjing R&D Base, Zhongguancun Electronic Zone West Zone, Beijing 100012 , China
| | - Anthony J Roecker
- Discovery Chemistry , Merck & Co., Inc. , West Point , Pennsylvania 19486 , United States
| | - Jonathan M E Hughes
- Department of Process Research and Development , Merck & Co., Inc. , Rahway , New Jersey 07065 , United States
| | - Lili Cheng
- Chemistry Service Unit , WuXi AppTec (Tianjin) , 168 Nanhai Road , Tianjin Economic-Technological Development Area (TEDA), Tianjin 300457 , China
| | - Zheyu Zhao
- Chemistry Service Unit , WuXi AppTec (Tianjin) , 168 Nanhai Road , Tianjin Economic-Technological Development Area (TEDA), Tianjin 300457 , China
| | - Jingjun Yin
- Department of Process Research and Development , Merck & Co., Inc. , Rahway , New Jersey 07065 , United States
| |
Collapse
|
19
|
De Abreu M, Belmont P, Brachet E. Synergistic Photoredox/Transition-Metal Catalysis for Carbon-Carbon Bond Formation Reactions. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901146] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Maxime De Abreu
- Faculté de Pharmacie de Paris; Université de Paris; Team P.N.A.S, UMR-CNRS 8038 CiTCoM; 4 avenue de l'Observatoire 75006 Paris France
| | - Philippe Belmont
- Faculté de Pharmacie de Paris; Université de Paris; Team P.N.A.S, UMR-CNRS 8038 CiTCoM; 4 avenue de l'Observatoire 75006 Paris France
| | - Etienne Brachet
- Faculté de Pharmacie de Paris; Université de Paris; Team P.N.A.S, UMR-CNRS 8038 CiTCoM; 4 avenue de l'Observatoire 75006 Paris France
| |
Collapse
|
20
|
Busch J, Knoll DM, Zippel C, Bräse S, Bizzarri C. Metal-supported and -assisted stereoselective cooperative photoredox catalysis. Dalton Trans 2019; 48:15338-15357. [PMID: 31573576 DOI: 10.1039/c9dt02094b] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
In this perspective, we review those stereoselective photocatalytic reactions that use synergy between photoredox catalysts and transition metal catalysts. In particular, we highlight the orchestrated interaction between two and more metals which not only enhance the turnover numbers, but also lead to increased selectivities. Aspects of green chemistry and sustainable developments are included. In this review, C-C, C-O, C-N and C-S forming reactions are discussed and a perspective on future developments is given.
Collapse
Affiliation(s)
- Jasmin Busch
- Institute of Organic Chemistry, Fritz-Haber-Weg 6, 76131 Karlsruhe, Germany.
| | - Daniel M Knoll
- Institute of Organic Chemistry, Fritz-Haber-Weg 6, 76131 Karlsruhe, Germany.
| | - Christoph Zippel
- Institute of Organic Chemistry, Fritz-Haber-Weg 6, 76131 Karlsruhe, Germany.
| | - Stefan Bräse
- Institute of Organic Chemistry, Fritz-Haber-Weg 6, 76131 Karlsruhe, Germany. and Institute of Toxicology and Genetics, Hermann-von-Helmholtz-Platz 1, D-76344 Eggenstein-Leopoldshafen, Germany
| | - Claudia Bizzarri
- Institute of Organic Chemistry, Fritz-Haber-Weg 6, 76131 Karlsruhe, Germany.
| |
Collapse
|
21
|
Milligan JA, Phelan JP, Badir SO, Molander GA. Alkyl Carbon-Carbon Bond Formation by Nickel/Photoredox Cross-Coupling. Angew Chem Int Ed Engl 2019; 58:6152-6163. [PMID: 30291664 PMCID: PMC6551614 DOI: 10.1002/anie.201809431] [Citation(s) in RCA: 402] [Impact Index Per Article: 80.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Indexed: 11/10/2022]
Abstract
The union of photoredox and nickel catalysis has resulted in a renaissance in radical chemistry as well as in the use of nickel-catalyzed transformations, specifically for carbon-carbon bond formation. Collectively, these advances address the longstanding challenge of late-stage cross-coupling of functionalized alkyl fragments. Empowered by the notion that photocatalytically generated alkyl radicals readily undergo capture by Ni complexes, wholly new feedstocks for cross-coupling have been realized. Herein, we highlight recent developments in several types of alkyl cross-couplings that are accessible exclusively through this approach.
Collapse
Affiliation(s)
- John A Milligan
- Department of Chemistry, University of Pennsylvania, Roy and Diana Vagelos Laboratories, 231 S. 34th Street, Philadelphia, PA, 19104-6323, USA
| | - James P Phelan
- Department of Chemistry, University of Pennsylvania, Roy and Diana Vagelos Laboratories, 231 S. 34th Street, Philadelphia, PA, 19104-6323, USA
| | - Shorouk O Badir
- Department of Chemistry, University of Pennsylvania, Roy and Diana Vagelos Laboratories, 231 S. 34th Street, Philadelphia, PA, 19104-6323, USA
| | - Gary A Molander
- Department of Chemistry, University of Pennsylvania, Roy and Diana Vagelos Laboratories, 231 S. 34th Street, Philadelphia, PA, 19104-6323, USA
| |
Collapse
|
22
|
Liu H, Ge L, Wang D, Chen N, Feng C. Photoredox‐Coupled F‐Nucleophilic Addition: Allylation of
gem
‐Difluoroalkenes. Angew Chem Int Ed Engl 2019; 58:3918-3922. [DOI: 10.1002/anie.201814308] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 01/18/2019] [Indexed: 11/12/2022]
Affiliation(s)
- Haidong Liu
- Institute of Advanced SynthesisSchool of Chemistry and Molecular EngineeringNanjing Tech University Nanjing Jiangsu 210009 P. R. China
| | - Liang Ge
- Institute of Advanced SynthesisSchool of Chemistry and Molecular EngineeringNanjing Tech University Nanjing Jiangsu 210009 P. R. China
| | - Ding‐Xing Wang
- Institute of Advanced SynthesisSchool of Chemistry and Molecular EngineeringNanjing Tech University Nanjing Jiangsu 210009 P. R. China
| | - Nan Chen
- Institute of Advanced SynthesisSchool of Chemistry and Molecular EngineeringNanjing Tech University Nanjing Jiangsu 210009 P. R. China
| | - Chao Feng
- Institute of Advanced SynthesisSchool of Chemistry and Molecular EngineeringNanjing Tech University Nanjing Jiangsu 210009 P. R. China
| |
Collapse
|
23
|
Huang X, Garcia-Borràs M, Miao K, Kan SBJ, Zutshi A, Houk KN, Arnold FH. A Biocatalytic Platform for Synthesis of Chiral α-Trifluoromethylated Organoborons. ACS CENTRAL SCIENCE 2019; 5:270-276. [PMID: 30834315 PMCID: PMC6396380 DOI: 10.1021/acscentsci.8b00679] [Citation(s) in RCA: 64] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Indexed: 05/04/2023]
Abstract
There are few biocatalytic transformations that produce fluorine-containing molecules prevalent in modern pharmaceuticals. To expand the scope of biocatalysis for organofluorine synthesis, we have developed an enzymatic platform for highly enantioselective carbene B-H bond insertion to yield versatile α-trifluoromethylated (α-CF3) organoborons, an important class of organofluorine molecules that contain stereogenic centers bearing both CF3 and boron groups. In contrast to current "carbene transferase" enzymes that use a limited set of simple diazo compounds as carbene precursors, this system based on Rhodothermus marinus cytochrome c (Rma cyt c) can accept a broad range of trifluorodiazo alkanes and deliver versatile chiral α-CF3 organoborons with total turnovers up to 2870 and enantiomeric ratios up to 98.5:1.5. Computational modeling reveals that this broad diazo scope is enabled by an active-site environment that directs the alkyl substituent on the heme CF3-carbene intermediate toward the solvent-exposed face, thereby allowing the protein to accommodate diazo compounds with diverse structural features.
Collapse
Affiliation(s)
- Xiongyi Huang
- Division
of Chemistry and Chemical Engineering, California
Institute of Technology, Pasadena, California 91125, United States
| | - Marc Garcia-Borràs
- Department
of Chemistry and Biochemistry, University
of California, Los Angeles, California 90095, United States
| | - Kun Miao
- Division
of Chemistry and Chemical Engineering, California
Institute of Technology, Pasadena, California 91125, United States
| | - S. B. Jennifer Kan
- Division
of Chemistry and Chemical Engineering, California
Institute of Technology, Pasadena, California 91125, United States
| | - Arjun Zutshi
- Division
of Chemistry and Chemical Engineering, California
Institute of Technology, Pasadena, California 91125, United States
| | - K. N. Houk
- Department
of Chemistry and Biochemistry, University
of California, Los Angeles, California 90095, United States
| | - Frances H. Arnold
- Division
of Chemistry and Chemical Engineering, California
Institute of Technology, Pasadena, California 91125, United States
| |
Collapse
|
24
|
Milligan JA, Phelan JP, Badir SO, Molander GA. Alkyl‐C‐C‐Bindungsbildung durch Nickel/Photoredox‐Kreuzkupplung. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201809431] [Citation(s) in RCA: 82] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- John A. Milligan
- Department of ChemistryUniversity of PennsylvaniaRoy and Diana Vagelos Laboratories 231 S. 34th Street Philadelphia PA 19104-6323 USA
| | - James P. Phelan
- Department of ChemistryUniversity of PennsylvaniaRoy and Diana Vagelos Laboratories 231 S. 34th Street Philadelphia PA 19104-6323 USA
| | - Shorouk O. Badir
- Department of ChemistryUniversity of PennsylvaniaRoy and Diana Vagelos Laboratories 231 S. 34th Street Philadelphia PA 19104-6323 USA
| | - Gary A. Molander
- Department of ChemistryUniversity of PennsylvaniaRoy and Diana Vagelos Laboratories 231 S. 34th Street Philadelphia PA 19104-6323 USA
| |
Collapse
|
25
|
Liu H, Ge L, Wang D, Chen N, Feng C. Photoredox‐Coupled F‐Nucleophilic Addition: Allylation of
gem
‐Difluoroalkenes. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201814308] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Haidong Liu
- Institute of Advanced SynthesisSchool of Chemistry and Molecular EngineeringNanjing Tech University Nanjing Jiangsu 210009 P. R. China
| | - Liang Ge
- Institute of Advanced SynthesisSchool of Chemistry and Molecular EngineeringNanjing Tech University Nanjing Jiangsu 210009 P. R. China
| | - Ding‐Xing Wang
- Institute of Advanced SynthesisSchool of Chemistry and Molecular EngineeringNanjing Tech University Nanjing Jiangsu 210009 P. R. China
| | - Nan Chen
- Institute of Advanced SynthesisSchool of Chemistry and Molecular EngineeringNanjing Tech University Nanjing Jiangsu 210009 P. R. China
| | - Chao Feng
- Institute of Advanced SynthesisSchool of Chemistry and Molecular EngineeringNanjing Tech University Nanjing Jiangsu 210009 P. R. China
| |
Collapse
|
26
|
Zhu D, Zheng W, Zheng Y, Chang H, Xie H. A theoretical study on one-electron redox potentials of organotrifluoroborate anions. NEW J CHEM 2019. [DOI: 10.1039/c9nj01061k] [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
The E° values of different kinds of organotrifluoroborate anions were investigated by using the M05-2X method with a PCM–UAHF model.
Collapse
Affiliation(s)
- Danfeng Zhu
- College of Chemistry and Chemical Engineering
- Shanghai University of Engineering Science
- Shanghai 201620
- China
| | - Wenrui Zheng
- College of Chemistry and Chemical Engineering
- Shanghai University of Engineering Science
- Shanghai 201620
- China
| | - Yuanyuan Zheng
- College of Chemistry and Chemical Engineering
- Shanghai University of Engineering Science
- Shanghai 201620
- China
| | - Huifang Chang
- College of Chemistry and Chemical Engineering
- Shanghai University of Engineering Science
- Shanghai 201620
- China
| | - Hongyun Xie
- College of Chemistry and Chemical Engineering
- Shanghai University of Engineering Science
- Shanghai 201620
- China
| |
Collapse
|
27
|
Lv WX, Li Q, Li JL, Li Z, Lin E, Tan DH, Cai YH, Fan WX, Wang H. gem
-Difluorination of Alkenyl N
-methyliminodiacetyl Boronates: Synthesis of α- and β-Difluorinated Alkylborons. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201810204] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Wen-Xin Lv
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 China
| | - Qingjiang Li
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 China
| | - Ji-Lin Li
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 China
| | - Zhan Li
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 China
| | - E Lin
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 China
| | - Dong-Hang Tan
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 China
| | - Yuan-Hong Cai
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 China
| | - Wen-Xin Fan
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 China
| | - Honggen Wang
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 China
| |
Collapse
|
28
|
Lv WX, Li Q, Li JL, Li Z, Lin E, Tan DH, Cai YH, Fan WX, Wang H. gem
-Difluorination of Alkenyl N
-methyliminodiacetyl Boronates: Synthesis of α- and β-Difluorinated Alkylborons. Angew Chem Int Ed Engl 2018; 57:16544-16548. [DOI: 10.1002/anie.201810204] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Indexed: 11/08/2022]
Affiliation(s)
- Wen-Xin Lv
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 China
| | - Qingjiang Li
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 China
| | - Ji-Lin Li
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 China
| | - Zhan Li
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 China
| | - E Lin
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 China
| | - Dong-Hang Tan
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 China
| | - Yuan-Hong Cai
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 China
| | - Wen-Xin Fan
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 China
| | - Honggen Wang
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 China
| |
Collapse
|
29
|
Liu T, Li Y, Lai L, Cheng J, Sun J, Wu J. Photocatalytic Reaction of Potassium Alkyltrifluoroborates and Sulfur Dioxide with Alkenes. Org Lett 2018; 20:3605-3608. [DOI: 10.1021/acs.orglett.8b01385] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Tong Liu
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200438, China
| | - Yuewen Li
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200438, China
| | - Lifang Lai
- School of Petrochemical Engineering, and Jiangsu Province Key Laboratory of Fine Petrochemical Engineering, Changzhou University, Changzhou 213164, China
| | - Jiang Cheng
- School of Petrochemical Engineering, and Jiangsu Province Key Laboratory of Fine Petrochemical Engineering, Changzhou University, Changzhou 213164, China
| | - Jiangtao Sun
- School of Petrochemical Engineering, and Jiangsu Province Key Laboratory of Fine Petrochemical Engineering, Changzhou University, Changzhou 213164, China
| | - Jie Wu
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200438, China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| |
Collapse
|
30
|
Duan K, Yan X, Liu Y, Li Z. Recent Progress in the Radical Chemistry of Alkylborates and Alkylboronates. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201701626] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Ke Duan
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education; Ocean University of China; Qingdao 266100 People's Republic of China
- College of Environmental Science and Engineering; Ocean University of China; Qingdao 266100 People's Republic of China
| | - Xuefeng Yan
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education; Ocean University of China; Qingdao 266100 People's Republic of China
| | - Yongjun Liu
- State Key Laboratory Base of Eco-chemical Engineering; College of Chemistry and Molecular Engineering; Qingdao University of Science and Technology; Qingdao 266042 People's Republic of China
| | - Zhaodong Li
- College of Materials and Energy; South China Agricultural University; Guangzhou 510640 People's Republic of China
| |
Collapse
|
31
|
Yue H, Zhu C, Rueping M. Cross-Coupling of Sodium Sulfinates with Aryl, Heteroaryl, and Vinyl Halides by Nickel/Photoredox Dual Catalysis. Angew Chem Int Ed Engl 2018; 57:1371-1375. [PMID: 29211330 PMCID: PMC6001575 DOI: 10.1002/anie.201711104] [Citation(s) in RCA: 143] [Impact Index Per Article: 23.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2017] [Indexed: 12/17/2022]
Abstract
An efficient photoredox/nickel catalyzed sulfonylation reaction of aryl, heteroaryl, and vinyl halides has been achieved for the first time. This newly developed sulfonylation protocol provides a versatile method for the synthesis of diverse aromatic sulfones at room temperature and shows excellent functional group tolerance. The electrophilic coupling partners are not limited to aryl, heteroaryl, and vinyl bromides and iodides, but also includes less reactive aryl chlorides as suitable substrates for this transformation.
Collapse
Affiliation(s)
- Huifeng Yue
- Institute of Organic ChemistryRWTH Aachen UniversityLandoltweg 152074AachenGermany
| | - Chen Zhu
- Institute of Organic ChemistryRWTH Aachen UniversityLandoltweg 152074AachenGermany
| | - Magnus Rueping
- Institute of Organic ChemistryRWTH Aachen UniversityLandoltweg 152074AachenGermany
- King Abdullah University of Science and Technology (KAUST)KAUST Catalysis Center (KCC)Thuwal23955-6900Saudi Arabia
| |
Collapse
|
32
|
Yu XY, Zhou QQ, Wang PZ, Liao CM, Chen JR, Xiao WJ. Dual Photoredox/Nickel-Catalyzed Regioselective Cross-Coupling of 2-Arylaziridines and Potassium Benzyltrifluoroborates: Synthesis of β-Substitued Amines. Org Lett 2018; 20:421-424. [PMID: 29314848 DOI: 10.1021/acs.orglett.7b03747] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A dual visible light photoredox and nickel-catalyzed cross-coupling reaction of 2-arylaziridines and potassium benzyltrifluoroborates is described for the first time. This strategy features high functional group tolerance, exclusive regioselectivity for reaction at the more hindered C-N bond, easily accessible substrates, and mild redox-neutral reaction conditions. A variety of diversely substituted β-substituted amines are obtained in generally good yields.
Collapse
Affiliation(s)
- Xiao-Ye Yu
- CCNU-uOttawa Joint Research Centre, Hubei International Scientific and Technological Cooperation Base of Pesticide and Green Synthesis, Key Laboratory of Pesticides & Chemical Biology Ministry of Education, College of Chemistry, Central China Normal University , 152 Luoyu Road, Wuhan, Hubei 430079, China
| | - Quan-Quan Zhou
- CCNU-uOttawa Joint Research Centre, Hubei International Scientific and Technological Cooperation Base of Pesticide and Green Synthesis, Key Laboratory of Pesticides & Chemical Biology Ministry of Education, College of Chemistry, Central China Normal University , 152 Luoyu Road, Wuhan, Hubei 430079, China
| | - Peng-Zi Wang
- CCNU-uOttawa Joint Research Centre, Hubei International Scientific and Technological Cooperation Base of Pesticide and Green Synthesis, Key Laboratory of Pesticides & Chemical Biology Ministry of Education, College of Chemistry, Central China Normal University , 152 Luoyu Road, Wuhan, Hubei 430079, China
| | - Chun-Miao Liao
- CCNU-uOttawa Joint Research Centre, Hubei International Scientific and Technological Cooperation Base of Pesticide and Green Synthesis, Key Laboratory of Pesticides & Chemical Biology Ministry of Education, College of Chemistry, Central China Normal University , 152 Luoyu Road, Wuhan, Hubei 430079, China
| | - Jia-Rong Chen
- CCNU-uOttawa Joint Research Centre, Hubei International Scientific and Technological Cooperation Base of Pesticide and Green Synthesis, Key Laboratory of Pesticides & Chemical Biology Ministry of Education, College of Chemistry, Central China Normal University , 152 Luoyu Road, Wuhan, Hubei 430079, China
| | - Wen-Jing Xiao
- CCNU-uOttawa Joint Research Centre, Hubei International Scientific and Technological Cooperation Base of Pesticide and Green Synthesis, Key Laboratory of Pesticides & Chemical Biology Ministry of Education, College of Chemistry, Central China Normal University , 152 Luoyu Road, Wuhan, Hubei 430079, China.,Hubei Key Laboratory of Processing and Application of Catalytic Materials, Huanggang Normal University , Huanggang, Hubei 438000, China
| |
Collapse
|
33
|
Yue H, Zhu C, Rueping M. Cross-Coupling of Sodium Sulfinates with Aryl, Heteroaryl, and Vinyl Halides by Nickel/Photoredox Dual Catalysis. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201711104] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Huifeng Yue
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Chen Zhu
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Magnus Rueping
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
- King Abdullah University of Science and Technology (KAUST); KAUST Catalysis Center (KCC); Thuwal 23955-6900 Saudi Arabia
| |
Collapse
|
34
|
Qiu G, Lai L, Cheng J, Wu J. Recent advances in the sulfonylation of alkenes with the insertion of sulfur dioxide via radical reactions. Chem Commun (Camb) 2018; 54:10405-10414. [DOI: 10.1039/c8cc05847d] [Citation(s) in RCA: 151] [Impact Index Per Article: 25.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Recent advances in the sulfonylation of alkenes via the insertion of sulfur dioxide are summarized. Two strategies for the sulfonylation of alkenes with the insertion of sulfur dioxide have been developed.
Collapse
Affiliation(s)
- Guanyinsheng Qiu
- College of Biological, Chemical Science and Engineering
- Jiaxing University
- Jiaxing 314001
- China
| | - Lifang Lai
- School of Petrochemical Engineering
- and Jiangsu Province Key Laboratory of Fine Petrochemical Engineering
- Changzhou University
- Changzhou 213164
- China
| | - Jiang Cheng
- School of Petrochemical Engineering
- and Jiangsu Province Key Laboratory of Fine Petrochemical Engineering
- Changzhou University
- Changzhou 213164
- China
| | - Jie Wu
- Department of Chemistry
- Fudan University (Jiangwan Campus)
- Shanghai 200438
- China
| |
Collapse
|
35
|
Lang SB, Wiles RJ, Kelly CB, Molander GA. Photoredox Generation of Carbon-Centered Radicals Enables the Construction of 1,1-Difluoroalkene Carbonyl Mimics. Angew Chem Int Ed Engl 2017; 56:15073-15077. [PMID: 28960656 PMCID: PMC5688010 DOI: 10.1002/anie.201709487] [Citation(s) in RCA: 242] [Impact Index Per Article: 34.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2017] [Indexed: 11/08/2022]
Abstract
Described is a facile, scalable route to access functional-group-rich gem-difluoroalkenes. Using visible-light-activated catalysts in conjunction with an arsenal of carbon-radical precursors, an array of trifluoromethyl-substituted alkenes undergoes radical defluorinative alkylation. Nonstabilized primary, secondary, and tertiary radicals can be used to install functional groups in a convergent manner, which would otherwise be challenging by two-electron pathways. The process readily extends to other perfluoroalkyl-substituted alkenes. In addition, we report the development of an organotrifluoroborate reagent to expedite the synthesis of the requisite trifluoromethyl-substituted alkene starting materials.
Collapse
Affiliation(s)
- Simon B Lang
- Department of Chemistry, University of Pennsylvania, Roy and Diana Vagelos Laboratories, 231 S. 34th Street, Philadelphia, PA, 19104-6323, USA
| | - Rebecca J Wiles
- Department of Chemistry, University of Pennsylvania, Roy and Diana Vagelos Laboratories, 231 S. 34th Street, Philadelphia, PA, 19104-6323, USA
| | - Christopher B Kelly
- Department of Chemistry, University of Pennsylvania, Roy and Diana Vagelos Laboratories, 231 S. 34th Street, Philadelphia, PA, 19104-6323, USA
| | - Gary A Molander
- Department of Chemistry, University of Pennsylvania, Roy and Diana Vagelos Laboratories, 231 S. 34th Street, Philadelphia, PA, 19104-6323, USA
| |
Collapse
|
36
|
Lang SB, Wiles RJ, Kelly CB, Molander GA. Photoredox Generation of Carbon-Centered Radicals Enables the Construction of 1,1-Difluoroalkene Carbonyl Mimics. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201709487] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Simon B. Lang
- Department of Chemistry; University of Pennsylvania; Roy and Diana Vagelos Laboratories; 231 S. 34th Street Philadelphia PA 19104-6323 USA
| | - Rebecca J. Wiles
- Department of Chemistry; University of Pennsylvania; Roy and Diana Vagelos Laboratories; 231 S. 34th Street Philadelphia PA 19104-6323 USA
| | - Christopher B. Kelly
- Department of Chemistry; University of Pennsylvania; Roy and Diana Vagelos Laboratories; 231 S. 34th Street Philadelphia PA 19104-6323 USA
| | - Gary A. Molander
- Department of Chemistry; University of Pennsylvania; Roy and Diana Vagelos Laboratories; 231 S. 34th Street Philadelphia PA 19104-6323 USA
| |
Collapse
|
37
|
Huang W, Wan X, Shen Q. Enantioselective Construction of Trifluoromethoxylated Stereogenic Centers by a Nickel-Catalyzed Asymmetric Suzuki-Miyaura Coupling of Secondary Benzyl Bromides. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201706868] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Weichen Huang
- Key Laboratory of Organofluorine Chemistry; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
| | - Xiaolong Wan
- Key Laboratory of Organofluorine Chemistry; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
| | - Qilong Shen
- Key Laboratory of Organofluorine Chemistry; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
| |
Collapse
|
38
|
Huang W, Wan X, Shen Q. Enantioselective Construction of Trifluoromethoxylated Stereogenic Centers by a Nickel-Catalyzed Asymmetric Suzuki-Miyaura Coupling of Secondary Benzyl Bromides. Angew Chem Int Ed Engl 2017; 56:11986-11989. [DOI: 10.1002/anie.201706868] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Indexed: 11/08/2022]
Affiliation(s)
- Weichen Huang
- Key Laboratory of Organofluorine Chemistry; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
| | - Xiaolong Wan
- Key Laboratory of Organofluorine Chemistry; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
| | - Qilong Shen
- Key Laboratory of Organofluorine Chemistry; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
| |
Collapse
|
39
|
Brambilla M, Tredwell M. Palladium-Catalyzed Suzuki-Miyaura Cross-Coupling of Secondary α-(Trifluoromethyl)benzyl Tosylates. Angew Chem Int Ed Engl 2017; 56:11981-11985. [PMID: 28708334 DOI: 10.1002/anie.201706631] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Indexed: 12/26/2022]
Abstract
A palladium-catalyzed C(sp3 )-C(sp2 ) Suzuki-Miyaura cross-coupling of aryl boronic acids and α-(trifluoromethyl)benzyl tosylates is reported. A readily available, air-stable palladium catalyst was employed to access a wide range of functionalized 1,1-diaryl-2,2,2-trifluoroethanes. Enantioenriched α-(trifluoromethyl)benzyl tosylates were found to undergo cross-coupling to give the corresponding enantioenriched cross-coupled products with an overall inversion in configuration. The crucial role of the CF3 group in promoting this transformation is demonstrated by comparison with non-fluorinated derivatives.
Collapse
Affiliation(s)
- Marta Brambilla
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470, Mülheim an der Ruhr, Germany
| | - Matthew Tredwell
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470, Mülheim an der Ruhr, Germany
| |
Collapse
|
40
|
Brambilla M, Tredwell M. Palladium-Catalyzed Suzuki-Miyaura Cross-Coupling of Secondary α-(Trifluoromethyl)benzyl Tosylates. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201706631] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Marta Brambilla
- Max-Planck-Institut für Kohlenforschung; Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Germany
| | - Matthew Tredwell
- Max-Planck-Institut für Kohlenforschung; Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Germany
| |
Collapse
|
41
|
Tang H, Lin L, Feng C, Loh T. Palladium‐Catalyzed Fluoroarylation of
gem
‐Difluoroalkenes. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/anie.201705321] [Citation(s) in RCA: 70] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Hai‐Jun Tang
- Institute of Advanced SynthesisSchool of Chemistry and Molecular EngineeringJiangsu National Synergetic Innovation Center for Advanced MaterialsNanjing Tech University 30 South Puzhu Road Nanjing 211816 P.R. China
| | - Ling‐Zhi Lin
- Institute of Advanced SynthesisSchool of Chemistry and Molecular EngineeringJiangsu National Synergetic Innovation Center for Advanced MaterialsNanjing Tech University 30 South Puzhu Road Nanjing 211816 P.R. China
| | - Chao Feng
- Institute of Advanced SynthesisSchool of Chemistry and Molecular EngineeringJiangsu National Synergetic Innovation Center for Advanced MaterialsNanjing Tech University 30 South Puzhu Road Nanjing 211816 P.R. China
| | - Teck‐Peng Loh
- Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University 21 Nanyang Link Singapore 637371 Singapore
| |
Collapse
|
42
|
Tang H, Lin L, Feng C, Loh T. Palladium‐Catalyzed Fluoroarylation of
gem
‐Difluoroalkenes. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201705321] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Hai‐Jun Tang
- Institute of Advanced SynthesisSchool of Chemistry and Molecular EngineeringJiangsu National Synergetic Innovation Center for Advanced MaterialsNanjing Tech University 30 South Puzhu Road Nanjing 211816 P.R. China
| | - Ling‐Zhi Lin
- Institute of Advanced SynthesisSchool of Chemistry and Molecular EngineeringJiangsu National Synergetic Innovation Center for Advanced MaterialsNanjing Tech University 30 South Puzhu Road Nanjing 211816 P.R. China
| | - Chao Feng
- Institute of Advanced SynthesisSchool of Chemistry and Molecular EngineeringJiangsu National Synergetic Innovation Center for Advanced MaterialsNanjing Tech University 30 South Puzhu Road Nanjing 211816 P.R. China
| | - Teck‐Peng Loh
- Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University 21 Nanyang Link Singapore 637371 Singapore
| |
Collapse
|
43
|
Affiliation(s)
- Zhongdong Sun
- Institute of Microbial Chemistry (BIKAKEN), 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo 141-0021, Japan
| | - Naoya Kumagai
- Institute of Microbial Chemistry (BIKAKEN), 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo 141-0021, Japan
| | - Masakatsu Shibasaki
- Institute of Microbial Chemistry (BIKAKEN), 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo 141-0021, Japan
| |
Collapse
|
44
|
Matsui JK, Primer DN, Molander GA. Metal-free C-H alkylation of heteroarenes with alkyltrifluoroborates: a general protocol for 1°, 2° and 3° alkylation. Chem Sci 2017; 8:3512-3522. [PMID: 28507725 PMCID: PMC5418733 DOI: 10.1039/c7sc00283a] [Citation(s) in RCA: 208] [Impact Index Per Article: 29.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Accepted: 02/24/2017] [Indexed: 12/23/2022] Open
Abstract
A photoredox-catalyzed C-H functionalization of heteroarenes using a variety of primary, secondary, and tertiary alkyltrifluoroborates is reported. Using Fukuzumi's organophotocatalyst and a mild oxidant, conditions amenable for functionalizing complex heteroaromatics are described, providing a valuable tool for late-stage derivatization. The reported method addresses the three major limitations of previously reported photoredox-mediated Minisci reactions: (1) use of superstoichiometric amounts of a radical precursor, (2) capricious regioselectivity, and (3) incorporation of expensive photocatalysts. Additionally, a number of unprecedented, complex alkyl radicals are used, thereby increasing the chemical space accessible to Minisci chemistry. To showcase the application in late-stage functionalization, quinine and camptothecin analogues were synthesized. Finally, NMR studies were conducted to provide a rationalization for the heteroaryl activation that permits the use of a single equivalent of radical precursor and also leads to enhanced regioselectivity. Thus, by 1H and 13C NMR a distinct heteroaryl species was observed in the presence of acid catalyst and BF3.
Collapse
Affiliation(s)
- Jennifer K Matsui
- Roy and Diana Vagelos Laboratories , Department of Chemistry , University of Pennsylvania , 231 S. 34th Street , Philadelphia , Pennsylvania 19104-6323 , USA .
| | - David N Primer
- Roy and Diana Vagelos Laboratories , Department of Chemistry , University of Pennsylvania , 231 S. 34th Street , Philadelphia , Pennsylvania 19104-6323 , USA .
| | - Gary A Molander
- Roy and Diana Vagelos Laboratories , Department of Chemistry , University of Pennsylvania , 231 S. 34th Street , Philadelphia , Pennsylvania 19104-6323 , USA .
| |
Collapse
|
45
|
Matsui JK, Lang SB, Heitz DR, Molander GA. Photoredox-Mediated Routes to Radicals: The Value of Catalytic Radical Generation in Synthetic Methods Development. ACS Catal 2017; 7:2563-2575. [PMID: 28413692 PMCID: PMC5388068 DOI: 10.1021/acscatal.7b00094] [Citation(s) in RCA: 435] [Impact Index Per Article: 62.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2017] [Revised: 02/17/2017] [Indexed: 01/19/2023]
Abstract
Photoredox catalysis has experienced a revitalized interest from the synthesis community during the past decade. For example, photoredox/Ni dual catalysis protocols have been developed to overcome several inherent limitations of palladium-catalyzed cross-couplings by invoking a single-electron transmetalation pathway. This Perspective highlights advances made by our laboratory since the inception of the photoredox/Ni cross-coupling of benzyltrifluoroborates with aryl bromides. In addition to broadening the scope of trifluoroborate coupling partners, research using readily oxidized hypervalent silicates as radical precursors that demonstrate functional group compatibility is highlighted. The pursuit of electrophilic coupling partners beyond (hetero)aryl bromides has also led to the incorporation of several new classes of C(sp2)-hybridized substrates into light-mediated cross-coupling. Advances to expand the radical toolbox by utilizing feedstock chemicals (e.g., aldehydes) to access radicals that were previously inaccessible from trifluoroborates and silicates are also emphasized. Additionally, several organic photocatalysts have been investigated as replacements for their expensive iridium- and ruthenium-based counterparts. Lastly, the net C-H functionalization of the radical partner in an effort to improve atom economy is presented. An underlying theme in all of these studies is the value of generating radicals in a catalytic manner, rather than stoichiometrically.
Collapse
Affiliation(s)
- Jennifer K. Matsui
- Roy and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, United States
| | - Simon B. Lang
- Roy and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, United States
| | - Drew R. Heitz
- Roy and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, United States
| | - Gary A. Molander
- Roy and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, United States
| |
Collapse
|
46
|
McTiernan CD, Leblanc X, Scaiano JC. Heterogeneous Titania-Photoredox/Nickel Dual Catalysis: Decarboxylative Cross-Coupling of Carboxylic Acids with Aryl Iodides. ACS Catal 2017. [DOI: 10.1021/acscatal.6b03687] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Christopher D. McTiernan
- Department of Chemistry and Biomolecular Sciences and Centre for Catalysis Research and Innovation, University of Ottawa, 10 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
| | - Xavier Leblanc
- Department of Chemistry and Biomolecular Sciences and Centre for Catalysis Research and Innovation, University of Ottawa, 10 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
| | - Juan C. Scaiano
- Department of Chemistry and Biomolecular Sciences and Centre for Catalysis Research and Innovation, University of Ottawa, 10 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
| |
Collapse
|
47
|
Jiang Q, Guo T, Yu Z. Copper-Catalyzed Asymmetric Borylation: Construction of a Stereogenic Carbon Center Bearing Both CF 3 and Organoboron Functional Groups. J Org Chem 2017; 82:1951-1960. [PMID: 28116903 DOI: 10.1021/acs.joc.6b02772] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Copper-catalyzed borylation of β-trifluoromethyl-α,β-unsaturated ketones was efficiently achieved by means of bis(pinacolato)diboron (B2pin2), affording the enantioenriched products in good yields with high enantioselectivities. CuI and (R,S)-Josiphos consist of the most efficient catalyst system under mild conditions. In the absence of the chiral ligand, the reactions could be performed more efficiently to form β-ketone derivatives which were directly borylated and indirectly trifluoromethylated at the β-carbon atom of the α,β-unsaturated ketone substrates. The present protocol provides a promising method to access a stereogenic carbon center bearing both CF3 and organoboron functional groups.
Collapse
Affiliation(s)
- Quanbin Jiang
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences , 457 Zhongshan Road, Dalian 116023, People's Republic of China
| | - Tenglong Guo
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences , 457 Zhongshan Road, Dalian 116023, People's Republic of China
| | - Zhengkun Yu
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences , 457 Zhongshan Road, Dalian 116023, People's Republic of China.,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences , 354 Fenglin Road, Shanghai 200032, People's Republic of China
| |
Collapse
|
48
|
Zhang WM, Dai JJ, Xu J, Xu HJ. Visible-Light-Induced C2 Alkylation of Pyridine N-Oxides. J Org Chem 2017; 82:2059-2066. [DOI: 10.1021/acs.joc.6b02891] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Wen-Man Zhang
- School of Biological and
Medical Engineering, Hefei University of Technology, Hefei 230009, China
| | - Jian-Jun Dai
- School of Biological and
Medical Engineering, Hefei University of Technology, Hefei 230009, China
| | - Jun Xu
- School of Biological and
Medical Engineering, Hefei University of Technology, Hefei 230009, China
| | - Hua-Jian Xu
- School of Biological and
Medical Engineering, Hefei University of Technology, Hefei 230009, China
| |
Collapse
|
49
|
Vara BA, Jouffroy M, Molander GA. C(sp 3)-C(sp 2) cross-coupling of alkylsilicates with borylated aryl bromides - an iterative platform to alkylated aryl- and heteroaryl boronates. Chem Sci 2017; 8:530-535. [PMID: 28451200 PMCID: PMC5351799 DOI: 10.1039/c6sc03236b] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2016] [Accepted: 09/03/2016] [Indexed: 12/26/2022] Open
Abstract
The attractive field of iterative cross-coupling has seen numerous advances, although almost exclusively in the union of sp2-hybridized partners. Conspicuously absent from this useful synthetic manifold is the inclusion of sp3-hybridized pronucleophiles that can undergo transmetalation under mild conditions. Described here is the use of primary and secondary ammonium alkylsilicates, which undergo facile C(sp3)-C(sp2) cross-coupling with borylated aryl bromide partners under photoredox/nickel dual catalysis conditions. This operationally simple procedure allows the production of alkylated small molecules possessing boronate ester (BPin, Bneopentyl, BMIDA) functional handles. Because of the extremely mild reaction conditions and the innocuous byproduct generated upon fragmentative oxidation of silicates, the corresponding borylated compounds were isolated in good to excellent yields. Aryl bromides bearing unprotected boronic acids are also generally tolerated for the first time and prove useful in multistep syntheses. Unlike many previously reported photoredox/Ni dual cross-couplings, the C(sp3)-C(sp2) bonds were forged using a transition metal-free photocatalyst, allowing a substantial increase in sustainability as well as a cost reduction. Because the developed Ni-catalyzed cross-coupling does not require discrete boron speciation control, as in many popular orthogonal Pd-based methods, this protocol represents a significant advance in atom- and step-economy.
Collapse
Affiliation(s)
- Brandon A Vara
- Roy and Diana Vagelos Laboratories , Department of Chemistry , University of Pennsylvania , 231 South 34th Street , Philadelphia , Pennsylvania 19104-6323 , USA .
| | - Matthieu Jouffroy
- Roy and Diana Vagelos Laboratories , Department of Chemistry , University of Pennsylvania , 231 South 34th Street , Philadelphia , Pennsylvania 19104-6323 , USA .
| | - Gary A Molander
- Roy and Diana Vagelos Laboratories , Department of Chemistry , University of Pennsylvania , 231 South 34th Street , Philadelphia , Pennsylvania 19104-6323 , USA .
| |
Collapse
|
50
|
Gutiérrez-Bonet Á, Tellis JC, Matsui JK, Vara BA, Molander GA. 1,4-Dihydropyridines as Alkyl Radical Precursors: Introducing the Aldehyde Feedstock to Nickel/Photoredox Dual Catalysis. ACS Catal 2016; 6:8004-8008. [PMID: 27990318 PMCID: PMC5152669 DOI: 10.1021/acscatal.6b02786] [Citation(s) in RCA: 187] [Impact Index Per Article: 23.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2016] [Revised: 10/20/2016] [Indexed: 01/05/2023]
Abstract
![]()
A Ni/photoredox dual catalytic cross-coupling
is disclosed in which
a diverse range of (hetero)aryl bromides are used as electrophiles,
with 1,4-dihydropyridines serving as precursors to Csp3-centered alkyl radical coupling partners. The reported method
is characterized by its extremely mild reaction conditions, enabling
access to underexplored cores.
Collapse
Affiliation(s)
- Álvaro Gutiérrez-Bonet
- Roy and Diana Vagelos Laboratories,
Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104-6323, United States
| | - John C. Tellis
- Roy and Diana Vagelos Laboratories,
Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104-6323, United States
| | - Jennifer K. Matsui
- Roy and Diana Vagelos Laboratories,
Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104-6323, United States
| | - Brandon A. Vara
- Roy and Diana Vagelos Laboratories,
Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104-6323, United States
| | - Gary A. Molander
- Roy and Diana Vagelos Laboratories,
Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104-6323, United States
| |
Collapse
|