51
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Zhu Z, Lin L, Xiao J, Shi Z. Nickel-Catalyzed Stereo- and Enantioselective Cross-Coupling of gem-Difluoroalkenes with Carbon Electrophiles by C-F Bond Activation. Angew Chem Int Ed Engl 2021; 61:e202113209. [PMID: 34889493 DOI: 10.1002/anie.202113209] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Indexed: 11/07/2022]
Abstract
Stereo- and enantioselective cross-electrophile coupling involving C-F bond activation is reported. Treatment of gem-difluoroalkenes with racemic benzyl electrophiles in the presence of a chiral nickel complex using B2 pin2 as a stoichiometric reductant allows the construction of a C(sp2 )-C(sp3 ) bond under mild conditions, affording a broad range of monofluoroalkenes bearing stereogenic allylic centers. Initial mechanistic studies indicate that a radical chain pathway may be operating, wherein the ester group in the gem-difluoroalkene promotes C-F bond activation through oxidative addition to a Ni species.
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Affiliation(s)
- Ziqi Zhu
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China
| | - Lin Lin
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China
| | - Jieshuai Xiao
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China
| | - Zhuangzhi Shi
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China.,School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China.,College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225002, China
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52
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Morand S, Jubault P, Bouillon JP, Couve-Bonnaire S. gem-Heteroatom-Substituted Fluoroalkenes as Mimics of Amide Derivatives or Phosphates: A Comprehensive Review. Chemistry 2021; 27:17273-17292. [PMID: 34533868 DOI: 10.1002/chem.202102548] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Indexed: 01/18/2023]
Abstract
gem-Heteroatom-substituted fluoroalkenes have received little attention despite their great potential in medicinal chemistry or in fine chemistry. Indeed, due to the electronic and steric similarity between the fluoroalkene moiety and the amide bond as well as the high strength of the carbon-fluorine bond, these gem-heteroatom-substituted fluoroalkenes could be envisioned as stable mimics of various important organic functions, such as phosphates, carbamates, S-thiocarbamates and ureas. We present herein an overview describing the syntheses over the last decade of heteroatom-substituted fluoroalkenes in geminal position. This review will be divided into several sections covering each the common following heteroatom: oxygen-, nitrogen-, sulfur-, phosphorus-, boron- and silicon-substituted fluoroalkenes.
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Affiliation(s)
- Solène Morand
- Normandie Université INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014), 76000, Rouen, France
| | - Philippe Jubault
- Normandie Université INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014), 76000, Rouen, France
| | | | - Samuel Couve-Bonnaire
- Normandie Université INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014), 76000, Rouen, France
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53
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Lv L, Qian H, Ma Y, Huang S, Yan X, Li Z. Ligand-controlled regioselective and chemodivergent defluorinative functionalization of gem-difluorocyclopropanes with simple ketones. Chem Sci 2021; 12:15511-15518. [PMID: 35003579 PMCID: PMC8654029 DOI: 10.1039/d1sc05451a] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Accepted: 11/07/2021] [Indexed: 12/14/2022] Open
Abstract
Modulating the reaction selectivity is highly attractive and pivotal to the rational design of synthetic regimes. The defluorinative functionalization of gem-difluorocyclopropanes constitutes a promising route to construct β-vinyl fluorine scaffolds, whereas chemo- and regioselective access to α-substitution patterns remains a formidable challenge. Presented herein is a robust Pd/NHC ligand synergistic strategy that could enable the C-F bond functionalization with exclusive α-regioselectivity with simple ketones. The key design adopted enolates as π-conjugated ambident nucleophiles that undergo inner-sphere 3,3'-reductive elimination warranted by the sterically hindered-yet-flexible Pd-PEPPSI complex. The excellent branched mono-defluorinative alkylation was achieved with a sterically highly demanding IHept ligand, while subtly less bulky SIPr acted as a bifunctional ligand that not only facilitated α-selective C(sp3)-F cleavage, but also rendered the newly-formed C(sp2)-F bond as the linchpin for subsequent C-O bond formation. These examples represented an unprecedented ligand-controlled regioselective and chemodivergent approach to various mono-fluorinated terminal alkenes and/or furans from the same readily available starting materials.
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Affiliation(s)
- Leiyang Lv
- Department of Chemistry, Renmin University of China Beijing 100872 China
| | - Huijun Qian
- Department of Chemistry, Renmin University of China Beijing 100872 China
| | - Yangyang Ma
- Department of Chemistry, Renmin University of China Beijing 100872 China
| | - Shiqing Huang
- Department of Chemistry, Renmin University of China Beijing 100872 China
| | - Xiaoyu Yan
- Department of Chemistry, Renmin University of China Beijing 100872 China
| | - Zhiping Li
- Department of Chemistry, Renmin University of China Beijing 100872 China
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54
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Alam S, Karim R, Khan A, Pal AK, Maruani A. Copper‐Catalyzed Preparation of Alkenylboronates and Arylboronates. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100817] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Safiul Alam
- Department of Chemistry Aliah University IIA/27, New Town Kolkata 700160 India
| | - Rejaul Karim
- Department of Chemistry Aliah University IIA/27, New Town Kolkata 700160 India
| | - Aminur Khan
- Department of Chemistry Aliah University IIA/27, New Town Kolkata 700160 India
| | - Amarta Kumar Pal
- Centre for Advance Studies in Chemistry North-Eastern Hill University Mawlai Campus Shillong 793022 India
| | - Antoine Maruani
- Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques – UMR 8601 Université de Paris UFR Biomédicale 45 rue des Saints Pères Paris 75006 France
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55
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Novák Z, Kotschy A, Varga B, Csenki JT, Tóth BL, Béke F. Application of Industrially Relevant HydroFluoroOlefin (HFO) Gases in Organic Syntheses. SYNTHESIS-STUTTGART 2021. [DOI: 10.1055/a-1538-8344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
AbstractHydrofluoroolefin (HFO) gases are state-of-the-art cooling agents with widespread household and industrial applications. Considering their structural benefits these fluorous feedstocks have gained the attention of organic chemists in the last couple of years. In this short review we summarized the existing synthetic transformations of these gaseous starting material and present their applicability in the synthesis of fluorine-containing organic molecules, which have potential importance as building blocks and reagents for diverse syntheses.1 Introduction2 Addition Reactions3 Substitutions4 Organometallic Chemistry4.1 Organolithium Compounds4.2 Organometallic Complexes4.3 Silicon Organic Chemistry4.4 Boron Organic Chemistry4.5 Palladium-Catalyzed Transformations4.6 Metathesis4.7 Hydroesterification, Hydroformylation5 Conclusions
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Affiliation(s)
- Zoltán Novák
- ELTE ‘Lendület’ Catalysis and Organic Synthesis Research Group, Institute of Chemistry, Faculty of Science, Eötvös Loránd University
| | | | - Bálint Varga
- ELTE ‘Lendület’ Catalysis and Organic Synthesis Research Group, Institute of Chemistry, Faculty of Science, Eötvös Loránd University
| | - János T. Csenki
- ELTE ‘Lendület’ Catalysis and Organic Synthesis Research Group, Institute of Chemistry, Faculty of Science, Eötvös Loránd University
| | - Balázs L. Tóth
- ELTE ‘Lendület’ Catalysis and Organic Synthesis Research Group, Institute of Chemistry, Faculty of Science, Eötvös Loránd University
| | - Ferenc Béke
- ELTE ‘Lendület’ Catalysis and Organic Synthesis Research Group, Institute of Chemistry, Faculty of Science, Eötvös Loránd University
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56
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Zhang J, Geng S, Feng Z. Advances in silylation and borylation of fluoroarenes and gem-difluoroalkenes via C-F bond cleavage. Chem Commun (Camb) 2021; 57:11922-11934. [PMID: 34700335 DOI: 10.1039/d1cc04729a] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Organoboron and organosilane compounds are widely used in organic synthesis and pharmaceuticals. In addition, the C-F bond functionalization is a useful tool for the construction of carbon-carbon and carbon-heteroatom bonds. In particular, the late-stage functionalization of bioactive molecules through defluoroborylation and defluorosilylation reactions will provide good opportunities for the development and diversification of new medicinal compounds. Thus, this feature article summarized the methods for the defluorosilylation and defluoroborylation of unreactive monofluoroarenes and gem-difluoroalkenes from 2000 to 2021, which might create some new ideas and will be helpful for further research in this field. These defluoroborylation and defluorosilylation strategies can be applied to synthesize silylated arenes, borylated arenes, silylated fluoroalkenes, and borylated fluoroalkenes, thus providing impressive advantages over traditional methods for the synthesis of organoboron and organosilane compounds in terms of divergent structures.
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Affiliation(s)
- Juan Zhang
- College of Biomedical Engineering, Taiyuan University of Technology, Taiyuan 030024, P. R. China
| | - Shasha Geng
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, Chemical Biology Research Center, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, P. R. China.
| | - Zhang Feng
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, Chemical Biology Research Center, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, P. R. China.
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57
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Tóth BL, Sályi G, Domján A, Egyed O, Bényei A, Gonda Z, Novák Z. Z
‐Selective Fluoroalkenylation of (Hetero)Aromatic Systems by Iodonium Reagents in Palladium‐Catalyzed Directed C−H Activation. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202101108] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Balázs L. Tóth
- ELTE Catalysis and Organic Synthesis Research Group Institute of Chemistry Eötvös Loránd University Faculty of Science Pázmány Péter sétány. 1/A H-1117 Budapest Hungary
| | - Gergő Sályi
- ELTE Catalysis and Organic Synthesis Research Group Institute of Chemistry Eötvös Loránd University Faculty of Science Pázmány Péter sétány. 1/A H-1117 Budapest Hungary
| | - Attila Domján
- Research Centre for Natural Sciences Eötvös Loránd Research Network Magyar Tudósok körútja 2 H-1117 Budapest Hungary
| | - Orsolya Egyed
- Research Centre for Natural Sciences Eötvös Loránd Research Network Magyar Tudósok körútja 2 H-1117 Budapest Hungary
| | - Attila Bényei
- Department of Physical Chemistry University of Debrecen Egyetem tér 1 H-4032 Debrecen Hungary
| | - Zsombor Gonda
- ELTE Catalysis and Organic Synthesis Research Group Institute of Chemistry Eötvös Loránd University Faculty of Science Pázmány Péter sétány. 1/A H-1117 Budapest Hungary
| | - Zoltán Novák
- ELTE Catalysis and Organic Synthesis Research Group Institute of Chemistry Eötvös Loránd University Faculty of Science Pázmány Péter sétány. 1/A H-1117 Budapest Hungary
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58
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Liu J, Yu L, Zheng C, Zhao G. Asymmetric Synthesis of 2,2-Difluorotetrahydrofurans through Palladium-Catalyzed Formal [3+2] Cycloaddition. Angew Chem Int Ed Engl 2021; 60:23641-23645. [PMID: 34494347 DOI: 10.1002/anie.202111376] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2021] [Indexed: 12/21/2022]
Abstract
The asymmetric synthesis of 2,2-difluorinated tetrahydrofurans was accomplished via enantioselective formal [3+2] cycloaddition catalyzed by palladium. The asymmetric reaction between gem-difluoroalkenes and racemic vinyl epoxides or vinylethylene carbonates resulted in the formation of enantioenriched 2,2-difluorotetrahydrofurans with an enantioselectivity up to 98 %. Notably, the reaction used the readily available (R)-BINAP as the ligand at a low loading and yielded a wide variety of difluorinated products in moderate to high yields. Both chiral diastereomers could be obtained in a single sequence.
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Affiliation(s)
- Jun Liu
- Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, P.R. China
| | - Longhui Yu
- Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, P.R. China
| | - Changwu Zheng
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Shanghai, 201203, P.R. China
| | - Gang Zhao
- Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, P.R. China
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59
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Liu J, Yu L, Zheng C, Zhao G. Asymmetric Synthesis of 2,2‐Difluorotetrahydrofurans through Palladium‐Catalyzed Formal [3+2] Cycloaddition. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202111376] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jun Liu
- Key Laboratory of Synthetic Chemistry of Natural Substances Shanghai Institute of Organic Chemistry Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 P.R. China
| | - Longhui Yu
- Key Laboratory of Synthetic Chemistry of Natural Substances Shanghai Institute of Organic Chemistry Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 P.R. China
| | - Changwu Zheng
- School of Pharmacy Shanghai University of Traditional Chinese Medicine 1200 Cailun Road Shanghai 201203 P.R. China
| | - Gang Zhao
- Key Laboratory of Synthetic Chemistry of Natural Substances Shanghai Institute of Organic Chemistry Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 P.R. China
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60
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Jouffroy M, Pye P, Jerhaoui S, Chen W, Surkyn M. Development of a Concise and Robust Route to a Key Fragment of MCL-1 Inhibitors via Stereoselective Defluoroborylation. J Org Chem 2021; 87:2136-2141. [PMID: 34570981 DOI: 10.1021/acs.joc.1c01666] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
MCL-1 is an attractive target for cancer therapy. We recently discovered highly potent and selective MCL-1 inhibitors containing a fluoroalkene fragment for which an efficient route to the main chiral gem-fluoro-BPin fragment was needed. The key step of this synthesis is a highly stereoselective defluoroborylation of a gem-difluorovinyl intermediate. The latter is reached via a copper-catalyzed diastereoselective opening of dimethyloxirane. These two features allowed a 30-fold improvement in yield, a shorter synthesis, and a decrease in the cost of this crucial building block.
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Affiliation(s)
- Matthieu Jouffroy
- Chemical Process R&D, Discovery Process Research, Janssen Pharmaceutica N.V., Turnhoutseweg 30, 2340 Beerse, Belgium
| | - Philip Pye
- Chemical Process R&D, External Research and Development Capabilities, Janssen Research & Development LLC, 920 U.S. Route 202, P.O. Box 300, Raritan, New Jersey 08869, United States
| | - Soufyan Jerhaoui
- Discovery Science, Discovery Chemistry BE, Janssen Pharmaceutica N.V., Turnhoutseweg 30, 2340 Beerse, Belgium
| | - Wenyong Chen
- Chemical Process R&D, Discovery Process Research, Janssen Research & Development LLC, Spring House, Pennsylvania 19477, United States
| | - Michel Surkyn
- Discovery Science, Discovery Chemistry BE, Janssen Pharmaceutica N.V., Turnhoutseweg 30, 2340 Beerse, Belgium
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61
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Xu W, Zhang Q, Shao Q, Xia C, Wu M. Photocatalytic C−F Bond Activation of Fluoroarenes,
gem
‐Difluoroalkenes and Trifluoromethylarenes. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100426] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Wengang Xu
- College of New Energy China University of Petroleum China East 266580 Qingdao P. R. China
| | - Qiao Zhang
- College of Chemical Engineering State Key Laboratory of Heavy Oil Processing China University of Petroleum (China East) 266580 Qingdao P. R. China
| | - Qi Shao
- College of Chemical Engineering State Key Laboratory of Heavy Oil Processing China University of Petroleum (China East) 266580 Qingdao P. R. China
| | - Congjian Xia
- College of Chemical Engineering State Key Laboratory of Heavy Oil Processing China University of Petroleum (China East) 266580 Qingdao P. R. China
| | - Mingbo Wu
- College of New Energy China University of Petroleum China East 266580 Qingdao P. R. China
- College of Chemical Engineering State Key Laboratory of Heavy Oil Processing China University of Petroleum (China East) 266580 Qingdao P. R. China
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62
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O'Connor TJ, Mai BK, Nafie J, Liu P, Toste FD. Generation of Axially Chiral Fluoroallenes through a Copper-Catalyzed Enantioselective β-Fluoride Elimination. J Am Chem Soc 2021; 143:13759-13768. [PMID: 34465099 DOI: 10.1021/jacs.1c05769] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Herein we report the copper-catalyzed silylation of propargylic difluorides to generate axially chiral, tetrasubstituted monofluoroallenes in both good yields (27 examples >80%) and enantioselectivities (82-98% ee). Compared to previously reported synthetic routes to axially chiral allenes (ACAs) from prochiral substrates, a mechanistically distinct reaction has been developed: the enantiodiscrimination between enantiotopic fluorides to set an axial stereocenter. DFT calculations and vibrational circular dichroism (VCD) suggest that β-fluoride elimination from an alkenyl copper intermediate likely proceeds through a syn-β-fluoride elimination pathway rather than an anti-elimination pathway. The effects of the C1-symmetric Josiphos-derived ligand on reactivity and enantioselectivity were investigated. Not only does this report showcase that alkenyl copper species (like their alkyl counterparts) can undergo β-fluoride elimination, but this elimination can be achieved in an enantioselective fashion.
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Affiliation(s)
- Thomas J O'Connor
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Binh Khanh Mai
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Jordan Nafie
- BioTools, Inc., 17546 Bee Line Highway, Jupiter, Florida 33458, United States
| | - Peng Liu
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - F Dean Toste
- Department of Chemistry, University of California, Berkeley, California 94720, United States
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63
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Hao F, Shang X, Liu Z, Zhang H, Lin JH, Xiao JC. Rh-catalyzed tunable defluorinative borylation. Chem Commun (Camb) 2021; 57:7124-7127. [PMID: 34179910 DOI: 10.1039/d1cc02079j] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Described herein is a Rh-catalyzed tunable defluorinative borylation of allylic gem-difluorides to provide allylborylated monofluoroalkenes or homoallylborylated monofluoroalkenes with excellent Z/E selectivities. Completely different reaction paths were observed by slightly changing the reaction conditions. Allylborylated monofluoroalkenes were further converted into dihydroxyl-containing monofluoroalkenes.
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Affiliation(s)
- Fei Hao
- Shandong Provincial Key Laboratory of Molecular Engineering, Qilu University of Technology-Shandong Academy of Science, Ji'nan 250353, China and 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.
| | - Xueyun Shang
- Shandong Provincial Key Laboratory of Molecular Engineering, Qilu University of Technology-Shandong Academy of Science, Ji'nan 250353, China
| | - Zhenwei Liu
- Shandong Provincial Key Laboratory of Molecular Engineering, Qilu University of Technology-Shandong Academy of Science, Ji'nan 250353, China
| | - He Zhang
- 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.
| | - Jin-Hong Lin
- 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. and Department of Chemistry, Innovative Drug Research Center, Shanghai University, Shanghai 200444, P. R. China.
| | - Ji-Chang Xiao
- 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.
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64
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Soor HS, Diaz DB, Burton KI, Yudin AK. Synthesis of Fluorinated Aminoalkylboronic Acids from Amphoteric α‐Boryl Aldehydes. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202104133] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Harjeet S. Soor
- Department of Chemistry University of Toronto 80 St. George St. Toronto ON M5S 3H6 Canada
| | - Diego B. Diaz
- Department of Chemistry University of Toronto 80 St. George St. Toronto ON M5S 3H6 Canada
| | - Katherine I. Burton
- Department of Chemistry University of Toronto 80 St. George St. Toronto ON M5S 3H6 Canada
| | - Andrei K. Yudin
- Department of Chemistry University of Toronto 80 St. George St. Toronto ON M5S 3H6 Canada
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65
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Soor HS, Diaz DB, Burton KI, Yudin AK. Synthesis of Fluorinated Aminoalkylboronic Acids from Amphoteric α-Boryl Aldehydes. Angew Chem Int Ed Engl 2021; 60:16366-16371. [PMID: 33977627 DOI: 10.1002/anie.202104133] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Indexed: 02/06/2023]
Abstract
Our ongoing search for underdeveloped functional group combinations has brought to light α-fluorinated aminoalkylboronic acids, a new class of molecules featuring the B-CF linkage. These compounds can now be generated from secondary amines and α-boryl aldehydes through electrophilic fluorination of boryl enamines or enamides. Fluorinated β-aminoalkylboronic acids show no signs of degradation under ambient conditions. We present evidence for the involvement of chair-like motifs, favored over the acyclic forms by up to 1.7±0.1 kcal mol-1 in water and held together by an amine-boronate hydrogen bond. Fluorinated β-aminoalkylboronic acids are stable over a wide pH range and are characterized by a pKa of 3.4, which is the lowest of any alkylboronic acid.
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Affiliation(s)
- Harjeet S Soor
- Department of Chemistry, University of Toronto, 80 St. George St., Toronto, ON, M5S 3H6, Canada
| | - Diego B Diaz
- Department of Chemistry, University of Toronto, 80 St. George St., Toronto, ON, M5S 3H6, Canada
| | - Katherine I Burton
- Department of Chemistry, University of Toronto, 80 St. George St., Toronto, ON, M5S 3H6, Canada
| | - Andrei K Yudin
- Department of Chemistry, University of Toronto, 80 St. George St., Toronto, ON, M5S 3H6, Canada
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66
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Zhou S, Pu Y, Liu Z, Zhang X, Zhu J, Feng Z. Iron-Catalyzed Diborylation of Unactivated Aliphatic gem-Dihalogenoalkenes: Synthesis of 1,2-Bis(boryl)alkanes. Org Lett 2021; 23:5565-5570. [PMID: 34231357 DOI: 10.1021/acs.orglett.1c01967] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Herein, we report the first example of iron-catalyzed defluoroborylation of unactivated gem-difluoroalkenes, gem-dichloroalkenes, and gem-dibromoalkenes, providing the 1,2-bis(boryl)alkanes in moderate to good yield. This transformation has high regioselectivity, wide substrate scope, and excellent functional group compatibility. Preliminary mechanistic studies indicate that double β-F elimination is involved in the catalytic cycle, and the 1,1-diborylated alkenes might be intermediates in this iron-catalyzed 1,2-diborylation reaction.
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Affiliation(s)
- Shangsheng Zhou
- Sichuan Key Laboratory of Medical Imaging, North Sichuan Medical College, Nanchong, Sichuan 637000, P.R. China
| | - Yu Pu
- Sichuan Key Laboratory of Medical Imaging, North Sichuan Medical College, Nanchong, Sichuan 637000, P.R. China
| | - Zhengli Liu
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, P.R. China
| | - Xiaoming Zhang
- Sichuan Key Laboratory of Medical Imaging, North Sichuan Medical College, Nanchong, Sichuan 637000, P.R. China
| | - Jiang Zhu
- Sichuan Key Laboratory of Medical Imaging, North Sichuan Medical College, Nanchong, Sichuan 637000, P.R. China
| | - Zhang Feng
- Sichuan Key Laboratory of Medical Imaging, North Sichuan Medical College, Nanchong, Sichuan 637000, P.R. China.,Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, P.R. China
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67
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Wang Y, Ma Q, Tsui GC. Stereoselective Synthesis of Difluorinated 1,3-Dienes via Palladium-Catalyzed C-F Bond Activation of Tetrasubstituted gem-Difluoroalkenes. Org Lett 2021; 23:5241-5245. [PMID: 34114459 DOI: 10.1021/acs.orglett.1c01768] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
A highly diastereoselective Pd(0)-catalyzed synthesis of difluorinated 1,3-dienes is described. Symmetrical 1,3-dienes containing a vicinal difluoro moiety can be obtained as single diastereomers from tetrasubstituted gem-difluoroalkenes. The reaction presumably proceeds through a stereoselective twofold Pd-catalyzed Miyaura borylation/Suzuki-Miyaura cross-coupling of the C-F bond. Moreover, modular synthesis of unsymmetrical difluorinated 1,3-dienes is also achievable by the coupling between gem-difluoroalkenes and borylated monofluoroalkenes.
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Affiliation(s)
- Yanhui Wang
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
| | - Qiao Ma
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
| | - Gavin Chit Tsui
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
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68
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Cross-coupling reactions of sterically hindered 2,2-difluoro-1-(aryl or silyl)ethenyl tosylates with (E)-arylethenylboronic acids. J Fluor Chem 2021. [DOI: 10.1016/j.jfluchem.2021.109784] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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69
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Li Y, Li X, Li X, Shi D. Highly E-Selective Synthesis of α-Fluoro-β-arylalkenyl Sulfones from gem-Difluoroalkenes with Sodium Sulfinates. J Org Chem 2021; 86:6983-6993. [PMID: 33852316 DOI: 10.1021/acs.joc.1c00490] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The straightforward synthesis of α-fluoro-β-arylalkenyl sulfones under transition-metal- and base-free conditions has been described, which displays broad functional group compatibility and high stereoselectivity. In particular, the strategy is also applied to the late-stage modification of complex natural products and drugs.
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Affiliation(s)
- Yuxiu Li
- State Key Laboratory of Microbial Technology and Marine Biotechnology Research Center, Shandong University, 72 Binhai Road, Qingdao 266237, Shandong, P. R. China
| | - Xiangqian Li
- State Key Laboratory of Microbial Technology and Marine Biotechnology Research Center, Shandong University, 72 Binhai Road, Qingdao 266237, Shandong, P. R. China
| | - Xiaowei Li
- State Key Laboratory of Microbial Technology and Marine Biotechnology Research Center, Shandong University, 72 Binhai Road, Qingdao 266237, Shandong, P. R. China
| | - Dayong Shi
- State Key Laboratory of Microbial Technology and Marine Biotechnology Research Center, Shandong University, 72 Binhai Road, Qingdao 266237, Shandong, P. R. China.,Laboratory for Marine Biology and Biotechnology, Pilot National Laboratory for Marine Science and Technology, 168 Wenhai Road, Qingdao 266237, Shandong, P. R. China
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70
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Yang L, Zhang Y, Deng J, Ma A, Zhang X, Zhang S, Peng J. Oxidative [3+2] Annulation of Pyridinium Salts with
gem
‐Difluoroalkenes: Synthesis of 2‐Fluoroindolizines. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100253] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Li–Miao Yang
- School of Biotechnology and Health Sciences Wuyi University Jiangmen, Guangdong 529020 P. R. China
| | - You‐Ya Zhang
- School of Biotechnology and Health Sciences Wuyi University Jiangmen, Guangdong 529020 P. R. China
| | - Jing‐Tong Deng
- School of Biotechnology and Health Sciences Wuyi University Jiangmen, Guangdong 529020 P. R. China
| | - Ai‐Jun Ma
- School of Biotechnology and Health Sciences Wuyi University Jiangmen, Guangdong 529020 P. R. China
| | - Xiang‐Zhi Zhang
- School of Biotechnology and Health Sciences Wuyi University Jiangmen, Guangdong 529020 P. R. China
| | - Shu‐Yu Zhang
- School of Biotechnology and Health Sciences Wuyi University Jiangmen, Guangdong 529020 P. R. China
- Shanghai Key Laboratory for Molecular Engineer of Chiral Drugs & School of Chemistry and Chemical Engineering Shanghai Jiao Tong University Shanghai 200240 P. R. China
| | - Jin‐Bao Peng
- School of Biotechnology and Health Sciences Wuyi University Jiangmen, Guangdong 529020 P. R. China
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71
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Zhang H, Wang E, Geng S, Liu Z, He Y, Peng Q, Feng Z. Experimental and Computational Studies of the Iron‐Catalyzed Selective and Controllable Defluorosilylation of Unactivated Aliphatic
gem
‐Difluoroalkenes. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202100049] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Huan Zhang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research School of Pharmaceutical Sciences Chongqing University Chongqing 401331 P.R. China
| | - Enhui Wang
- State Key Laboratory of Elemento-Organic Chemistry College of Chemistry Nankai University Tianjin 300071 China
| | - Shasha Geng
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research School of Pharmaceutical Sciences Chongqing University Chongqing 401331 P.R. China
| | - Zhengli Liu
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research School of Pharmaceutical Sciences Chongqing University Chongqing 401331 P.R. China
| | - Yun He
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research School of Pharmaceutical Sciences Chongqing University Chongqing 401331 P.R. China
| | - Qian Peng
- State Key Laboratory of Elemento-Organic Chemistry College of Chemistry Nankai University Tianjin 300071 China
| | - Zhang Feng
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research School of Pharmaceutical Sciences Chongqing University Chongqing 401331 P.R. China
- Sichuan Key Laboratory of Medical Imaging North Sichuan Medical College Nanchong P. R. China
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72
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Sunagawa DE, Ishida N, Iwamoto H, Ohashi M, Fruit C, Ogoshi S. Synthesis of Fluoroalkyl Sulfides via Additive-Free Hydrothiolation and Sequential Functionalization Reactions. J Org Chem 2021; 86:6015-6024. [PMID: 33781063 DOI: 10.1021/acs.joc.1c00361] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A modular synthetic method, involving a hydrothiolation, silylation, and fluoroalkylation, for the construction of highly functionalized fluoroalkyl sulfides has been developed. The use of aprotic polar solvents enables the additive-free chemoselective hydrothiolation of tetrafluoroethylene, trifluorochloroethylene, and hexafluoropropene with various thiols. The stepwise functionalization reactions convert the hydrothiolated intermediates into the tetrafluoroethyl sulfides in high efficiency. The method avoids the use of the environmental pollutant Halon-2402, which was employed as a building block in a reported synthetic route.
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Affiliation(s)
- Denise E Sunagawa
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Naoyoshi Ishida
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Hiroaki Iwamoto
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Masato Ohashi
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Corinne Fruit
- Normandie University, UNIROUEN, INSA Rouen, CNRS, COBRA, F-76000 Rouen, France
| | - Sensuke Ogoshi
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
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73
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Wu FP, Yuan Y, Liu J, Wu XF. Pd/Cu-Catalyzed Defluorinative Carbonylative Coupling of Aryl Iodides and gem-Difluoroalkenes: Efficient Synthesis of α-Fluorochalcones. Angew Chem Int Ed Engl 2021; 60:8818-8822. [PMID: 33538042 DOI: 10.1002/anie.202017365] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Indexed: 01/12/2023]
Abstract
An unprecedented and challenging defluorinative carbonylation was achieved. Enabled by a Pd/Cu cooperative catalyst system, the first example of defluorinative carbonylative coupling has been established. With gem-difluoroalkenes and aryl iodides as the substrates, this methodology offers flexible and facile access to privileged α-fluorochalcones under mild reaction conditions in moderate-to-excellent yields. Mechanistic studies indicated transmetalation between palladium and copper intermediates as a crucial step of the catalytic cycle.
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Affiliation(s)
- Fu-Peng Wu
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Straße 29a, 18059, Rostock, Germany
| | - Yang Yuan
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Straße 29a, 18059, Rostock, Germany
| | - Jiawang Liu
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Straße 29a, 18059, Rostock, Germany
| | - Xiao-Feng Wu
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Straße 29a, 18059, Rostock, Germany.,Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 116023, Dalian, Liaoning, China
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74
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Zhang H, Wang E, Geng S, Liu Z, He Y, Peng Q, Feng Z. Experimental and Computational Studies of the Iron-Catalyzed Selective and Controllable Defluorosilylation of Unactivated Aliphatic gem-Difluoroalkenes. Angew Chem Int Ed Engl 2021; 60:10211-10218. [PMID: 33555634 DOI: 10.1002/anie.202100049] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2021] [Revised: 02/05/2021] [Indexed: 12/21/2022]
Abstract
The first iron-catalyzed defluorosilylation of unactivated gem-difluoroalkenes was developed, delivering gem-disilylated alkenes and (E)-silylated alkenes with excellent efficiency. This protocol features good functional group compatibility and excellent regio- and stereoselectivity, enabling the late-stage silylation of biologically relevant compounds, thus providing good opportunities for applications in medicinal chemistry. Preliminary mechanistic studies and DFT calculations reveal that a nucleophilic addition and elimination of the second C-F bond might be involved in the disilylation catalytic system, demonstrating unusual reactivity characteristics of iron catalysis.
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Affiliation(s)
- Huan Zhang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing, 401331, P.R. China
| | - Enhui Wang
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, China
| | - Shasha Geng
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing, 401331, P.R. China
| | - Zhengli Liu
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing, 401331, P.R. China
| | - Yun He
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing, 401331, P.R. China
| | - Qian Peng
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, China
| | - Zhang Feng
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing, 401331, P.R. China.,Sichuan Key Laboratory of Medical Imaging, North Sichuan Medical College, Nanchong, P. R. China
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75
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Wu F, Yuan Y, Liu J, Wu X. Pd/Cu‐Catalyzed Defluorinative Carbonylative Coupling of Aryl Iodides and
gem
‐Difluoroalkenes: Efficient Synthesis of α‐Fluorochalcones. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202017365] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Fu‐Peng Wu
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock Albert-Einstein-Straße 29a 18059 Rostock Germany
| | - Yang Yuan
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock Albert-Einstein-Straße 29a 18059 Rostock Germany
| | - Jiawang Liu
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock Albert-Einstein-Straße 29a 18059 Rostock Germany
| | - Xiao‐Feng Wu
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock Albert-Einstein-Straße 29a 18059 Rostock Germany
- Dalian National Laboratory for Clean Energy Dalian Institute of Chemical Physics Chinese Academy of Sciences 116023 Dalian Liaoning China
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76
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Sorrentino JP, Orsi DL, Altman RA. Acid-Catalyzed Hydrothiolation of gem-Difluorostyrenes to Access α,α-Difluoroalkylthioethers. J Org Chem 2021; 86:2297-2311. [PMID: 33471529 PMCID: PMC7869866 DOI: 10.1021/acs.joc.0c02440] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
The substitution of hydrogen atoms with fluorine in bioactive molecules can greatly impact physicochemical, pharmacokinetic, and pharmacodynamic properties. However, current synthetic methods cannot readily access many fluorinated motifs, which impedes utilization of these groups. Thus, the development of new methods to introduce fluorinated functional groups is critical for developing the next generation of biological probes and therapeutic agents. The synthesis of one such substructure, the α,α-difluoroalkylthioether, typically requires specialized conditions that necessitate early-stage installation. A late-stage and convergent approach to access α,α-difluoroalkylthioethers could involve nucleophilic addition of thiols across gem-difluorostyrenes. Unfortunately, under basic conditions, nucleophilic addition to gem-difluorostyrenes generates an anionic intermediate that can undergo facile elimination of fluoride to generate α-fluorovinylthioethers. To overcome this decomposition, we herein exploit an acid-based catalyst system to facilitate simultaneous nucleophilic addition and protonation of the unstable intermediate. Ultimately, the optimized mild conditions afford the desired α,α-difluoroalkylthioethers in high selectivity and moderate to excellent yields. These α,α-difluoroalkylthioethers are less nucleophilic and more oxidatively stable relative to nonfluorinated thioethers, suggesting the potential application of this unexplored functional group in biological probes and therapeutic agents.
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Affiliation(s)
- Jacob P. Sorrentino
- Department of Medicinal Chemistry, The University of Kansas, Lawrence, Kansas 66045, United States
| | - Douglas L. Orsi
- Broad Institute of Harvard and MIT, Cambridge, Massachusetts 02142, United States
| | - Ryan A. Altman
- Department of Medicinal Chemistry and Molecular Pharmacology and Department of Chemistry, Purdue University, West Lafayette, Indiana 47906, United States
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77
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2,2-difluorovinyl benzoates for diverse synthesis of gem-difluoroenol ethers by Ni-catalyzed cross-coupling reactions. Nat Commun 2021; 12:412. [PMID: 33462244 PMCID: PMC7814061 DOI: 10.1038/s41467-020-20725-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Accepted: 12/10/2020] [Indexed: 11/08/2022] Open
Abstract
gem-Difluoroalkene is a bioisostere of carbonyl group for improving bioavailability of drug candidates. Herein we develop structurally diverse 2,2-difluorovinyl benzoates (BzO-DFs) as versatile building blocks for modular synthesis of gem-difluoroenol ethers (44 examples) and gem-difluoroalkenes (2 examples) by Ni-catalyzed cross coupling reactions. Diverse BzO-DFs derivatives bearing sensitive functional groups (e.g., C = C, TMS, strained carbocycles) are readily prepared from their bromodifluoroacetates and bromodifluoroketones precursors using metallic zinc as reductant. With Ni(COD)2 and dppf [1,1'-bis(diphenylphosphino)ferrocene] as catalyst, reactions of BzO-DFs with arylboronic acids and arylmagnesium/alkylzinc reagents afforded the desired gem-difluoroenol ethers and gem-difluoroalkenes in good yields. The Ni-catalyzed coupling reactions features highly regioselective C(vinyl)-O(benzoate) bond activation of the BzO-DFs. Results from control experiments and DFT calculations are consistent with a mechanism involving initial oxidative addition of the BzO-DFs by the Ni(0) complex. By virtue of diversity of the BzO-DFs and excellent functional group tolerance, this method is amenable to late-stage functionalization of multifunctionalized bioactive molecules.
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78
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Isoda M, Uetake Y, Takimoto T, Tsuda J, Hosoya T, Niwa T. Convergent Synthesis of Fluoroalkenes Using a Dual-Reactive Unit. J Org Chem 2021; 86:1622-1632. [PMID: 33400531 DOI: 10.1021/acs.joc.0c02474] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Fluoroalkenes have shown importance as a metabolically stable isostere of amide compounds. To expedite the synthesis of diverse fluoroalkenes, we have developed a dual-reactive C2-unit, (Z)-1-boryl-1-fluoro-2-tosyloxyethene, containing nucleophilic and electrophilic moieties. Consecutive palladium-catalyzed cross-coupling reactions of this unit with aryl bromides and aryl boronic acids allow for the convergent synthesis of diverse trans-1,2-diaryl-substituted fluoroethenes in a chemoselective and stereoretentive manner.
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Affiliation(s)
- Motoyuki Isoda
- Laboratory for Chemical Biology, RIKEN Center for Biosystems Dynamics Research (BDR), 6-7-3 Minatojima-minamimachi, Chuo-ku, Kobe 650-0047, Japan.,Chemical Biology Team, Division of Bio-Function Imaging, RIKEN Center for Life Science Technologies (CLST), 6-7-3 Minatojima-minamimachi, Chuo-ku, Kobe 650-0047, Japan
| | - Yuta Uetake
- Chemical Biology Team, Division of Bio-Function Imaging, RIKEN Center for Life Science Technologies (CLST), 6-7-3 Minatojima-minamimachi, Chuo-ku, Kobe 650-0047, Japan
| | - Tadashi Takimoto
- Laboratory for Chemical Biology, RIKEN Center for Biosystems Dynamics Research (BDR), 6-7-3 Minatojima-minamimachi, Chuo-ku, Kobe 650-0047, Japan
| | - Junpei Tsuda
- Laboratory for Chemical Biology, RIKEN Center for Biosystems Dynamics Research (BDR), 6-7-3 Minatojima-minamimachi, Chuo-ku, Kobe 650-0047, Japan.,Chemical Biology Team, Division of Bio-Function Imaging, RIKEN Center for Life Science Technologies (CLST), 6-7-3 Minatojima-minamimachi, Chuo-ku, Kobe 650-0047, Japan
| | - Takamitsu Hosoya
- Laboratory for Chemical Biology, RIKEN Center for Biosystems Dynamics Research (BDR), 6-7-3 Minatojima-minamimachi, Chuo-ku, Kobe 650-0047, Japan.,Chemical Biology Team, Division of Bio-Function Imaging, RIKEN Center for Life Science Technologies (CLST), 6-7-3 Minatojima-minamimachi, Chuo-ku, Kobe 650-0047, Japan.,Laboratory of Chemical Bioscience, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University (TMDU), 2-3-10 Kanda-Surugadai, Chiyoda-ku, Tokyo 101-0062, Japan
| | - Takashi Niwa
- Laboratory for Chemical Biology, RIKEN Center for Biosystems Dynamics Research (BDR), 6-7-3 Minatojima-minamimachi, Chuo-ku, Kobe 650-0047, Japan.,Chemical Biology Team, Division of Bio-Function Imaging, RIKEN Center for Life Science Technologies (CLST), 6-7-3 Minatojima-minamimachi, Chuo-ku, Kobe 650-0047, Japan
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79
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Li Z, Qiu X, Lou J, Wang Q. Progress in Visible-Light Catalyzed C—F Bond Functionalization of gem-Difluoroalkenes. CHINESE J ORG CHEM 2021. [DOI: 10.6023/cjoc202106013] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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80
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Cai Y, Tan D, Zhang Q, Lv W, Li Q, Wang H. Synthesis of difluoromethylated benzylborons via rhodium(I)-catalyzed fluorine-retainable hydroboration of gem-difluoroalkenes. CHINESE CHEM LETT 2021. [DOI: 10.1016/j.cclet.2020.03.031] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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81
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Tong X, Luo SS, Shen H, Zhang S, Cao T, Luo YP, Huang LL, Ma XT, Liu XW. Nickel-catalyzed defluorinative alkylation of C(sp 2)–F bonds. Org Chem Front 2021. [DOI: 10.1039/d1qo00549a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A nickel-catalyzed defluorinative alkylation of unactivated C(sp2)–F electrophiles using commercially available trialkylaluminum reagents, thus forming the C(sp2)–C(sp3) bonds is reported.
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Affiliation(s)
- Xue Tong
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs
- School of Life Science and Engineering
- Southwest Jiaotong University
- Chengdu 610031
- China
| | - Si-Si Luo
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs
- School of Life Science and Engineering
- Southwest Jiaotong University
- Chengdu 610031
- China
| | - Hua Shen
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs
- School of Life Science and Engineering
- Southwest Jiaotong University
- Chengdu 610031
- China
| | - Shu Zhang
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs
- School of Life Science and Engineering
- Southwest Jiaotong University
- Chengdu 610031
- China
| | - Tian Cao
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs
- School of Life Science and Engineering
- Southwest Jiaotong University
- Chengdu 610031
- China
| | - Yi-Peng Luo
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs
- School of Life Science and Engineering
- Southwest Jiaotong University
- Chengdu 610031
- China
| | - Long-Ling Huang
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs
- School of Life Science and Engineering
- Southwest Jiaotong University
- Chengdu 610031
- China
| | - Xi-Tao Ma
- Hospital of Chengdu University of Traditional Chinese Medicine
- Chengdu 610072
- China
| | - Xiang-Wei Liu
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs
- School of Life Science and Engineering
- Southwest Jiaotong University
- Chengdu 610031
- China
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82
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Liu X, Lin J, Zhuang C, Zhong J, Song D, Zhao J, Cao H. Switchable hydroxysulfonyloxylation and defluorination–decarboxylation sulfonylation of gem-difluoroalkenes with sodium sulfinate via aerobic oxidation. Org Chem Front 2021. [DOI: 10.1039/d1qo01005k] [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
A novel and attractive aerobic oxidative hydroxysulfonyloxylation of gem-difluoroalkenes with sodium sulfinate via free radical addition has been developed.
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Affiliation(s)
- Xiang Liu
- School of Chemistry and Chemical Engineering and Guangdong Cosmetics Engineering & Technology Research Center, Guangdong Pharmaceutical University, Zhongshan 528458, China
| | - Jiatong Lin
- School of Chemistry and Chemical Engineering and Guangdong Cosmetics Engineering & Technology Research Center, Guangdong Pharmaceutical University, Zhongshan 528458, China
| | - Canzhan Zhuang
- School of Chemistry and Chemical Engineering and Guangdong Cosmetics Engineering & Technology Research Center, Guangdong Pharmaceutical University, Zhongshan 528458, China
| | - Jinling Zhong
- School of Chemistry and Chemical Engineering and Guangdong Cosmetics Engineering & Technology Research Center, Guangdong Pharmaceutical University, Zhongshan 528458, China
| | - Dan Song
- School of Chemistry and Chemical Engineering and Guangdong Cosmetics Engineering & Technology Research Center, Guangdong Pharmaceutical University, Zhongshan 528458, China
| | - Jiaji Zhao
- School of Chemistry and Chemical Engineering and Guangdong Cosmetics Engineering & Technology Research Center, Guangdong Pharmaceutical University, Zhongshan 528458, China
| | - Hua Cao
- School of Chemistry and Chemical Engineering and Guangdong Cosmetics Engineering & Technology Research Center, Guangdong Pharmaceutical University, Zhongshan 528458, China
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83
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Jiang X, Wang G, Zheng Z, Yu X, Hong Y, Xia H, Yu C. Autocatalytic Synthesis of Thioesters via Thiocarbonylation of gem-Difluoroalkenes. Org Lett 2020; 22:9762-9766. [PMID: 33285069 DOI: 10.1021/acs.orglett.0c03860] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Herein, we report a new method for the synthesis of acyethanethioates via thiocarbonylation of gem-difluoroalkenes with thiols. This reaction provides a new pathway to prepare thioesters under mild conditions without the use of any additives. Mechanistic studies revealed that in situ generated HF facilitated the C-F bond cleavage in an autocatalytic manner.
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Affiliation(s)
- Xinpeng Jiang
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, P.R. China
| | - Guan Wang
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, P.R. China
| | - Zicong Zheng
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou 310014, P.R. China
| | - Xiaohui Yu
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, P.R. China
| | - Ye Hong
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou 310014, P.R. China
| | - Haoqi Xia
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, P.R. China
| | - Chuanming Yu
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, P.R. China
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84
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Zhang Y, Tian Q, Zhang G, Zhang D. Silver-catalyzed synthesis of β-fluorovinylphosphonates by phosphonofluorination of aromatic alkynes. Beilstein J Org Chem 2020; 16:3086-3092. [PMID: 33414856 PMCID: PMC7753110 DOI: 10.3762/bjoc.16.258] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Accepted: 12/07/2020] [Indexed: 01/18/2023] Open
Abstract
A silver-catalyzed three-component reaction involving alkynes, Selectfluor®, and diethyl phosphite was employed for the one-pot formation of C(sp2)-F and C(sp2)-P bonds to provide an efficient access to β-fluorovinylphosphonates in a highly regio- and stereoselective manner under mild reaction conditions. This reaction is operationally simple and offers an excellent functional group tolerance as well as a broad substrate scope that includes both terminal and internal alkynes. The reaction proceeded through the oxidative generation of a P-centered radical and subsequent fluorine atom transfer.
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Affiliation(s)
- Yajing Zhang
- School of Science, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210000, P. R. China
| | - Qingshan Tian
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, P. R. China
| | - Guozhu Zhang
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, P. R. China
| | - Dayong Zhang
- School of Science, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210000, P. R. China
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85
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Zhou J, Jiang B, Guo M, Sumii Y, Shibata N. Aryl gem-Difluorovinyl Pinacolboronates: Synthesis and Utility for Suzuki-Miyaura Coupling Reaction. CHEM LETT 2020. [DOI: 10.1246/cl.200621] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Jun Zhou
- Department of Nanopharmaceutical Sciences, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya, Aichi 466-8555, Japan
| | - Bingyao Jiang
- Department of Nanopharmaceutical Sciences, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya, Aichi 466-8555, Japan
| | - Ming Guo
- Department of Nanopharmaceutical Sciences, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya, Aichi 466-8555, Japan
| | - Yuji Sumii
- Department of Nanopharmaceutical Sciences, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya, Aichi 466-8555, Japan
| | - Norio Shibata
- Department of Nanopharmaceutical Sciences, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya, Aichi 466-8555, Japan
- Institute of Advanced Fluorine-Containing Materials, Zhejiang Normal University, 688 Yingbin Avenue, Jinhua 321004, P. R. China
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86
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Liu J, Nie W, Yu H, Shi J. A mechanistic study on Cu(i) catalyzed carboxylation of the C-F bond with CO 2: a DFT study. Org Biomol Chem 2020; 18:9065-9071. [PMID: 33124636 DOI: 10.1039/d0ob01414a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The Cu(i) catalyzed carboxylation of the C-F bond recently reported by Yu and co-workers is an excellent method for the construction of complex fluoroacrylate compounds with high regioselectivity. In the present study, theoretical calculations were carried out to investigate the detailed mechanism of the catalytic cycle and the origin of regioselectivity. The calculation results reveal that the overall catalytic cycle proceeds via the migratory insertion of difluoroalkene on the boryl-Cu(i) species, synβ-F elimination, transmetalation, and carboxylation steps. The rate determining step is the carboxylation step, and the migration insertion is the regioselectivity determining step. The regioselectivity for 2,1-insertion is consistent with Yu's experiment, and is determined by both steric and electronic effects.
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Affiliation(s)
- Jiao Liu
- Hefei National Laboratory for Physical Sciences at the Microscale, iChEM, CAS Key Laboratory of Urban Pollutant Conversion, Anhui Province Key Laboratory of Biomass Clean Energy, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China.
| | - Wan Nie
- Hefei National Laboratory for Physical Sciences at the Microscale, iChEM, CAS Key Laboratory of Urban Pollutant Conversion, Anhui Province Key Laboratory of Biomass Clean Energy, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China.
| | - Haizhu Yu
- Department of Chemistry, Center for Atomic Engineering of Advanced Materials, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Anhui University, Hefei, Anhui 230026, China.
| | - Jing Shi
- Hefei National Laboratory for Physical Sciences at the Microscale, iChEM, CAS Key Laboratory of Urban Pollutant Conversion, Anhui Province Key Laboratory of Biomass Clean Energy, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China.
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87
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Iwamoto H, Imiya H, Ohashi M, Ogoshi S. Cleavage of C(sp3)–F Bonds in Trifluoromethylarenes Using a Bis(NHC)nickel(0) Complex. J Am Chem Soc 2020; 142:19360-19367. [DOI: 10.1021/jacs.0c09639] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hiroaki Iwamoto
- Department of Applied Chemistry, Osaka University, Suita, Osaka 565-0871, Japan
| | - Hiroto Imiya
- Department of Applied Chemistry, Osaka University, Suita, Osaka 565-0871, Japan
| | - Masato Ohashi
- Department of Chemistry, Graduate School of Science, Osaka Prefecture University, Sakai, Osaka 599-8531, Japan
| | - Sensuke Ogoshi
- Department of Applied Chemistry, Osaka University, Suita, Osaka 565-0871, Japan
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88
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Kikushima K, Etou Y, Kamura R, Takeda I, Ito H, Ohashi M, Ogoshi S. Direct Transformation of Tetrafluoroethylene to Trifluorovinylzinc via sp 2 C-F Bond Activation. Org Lett 2020; 22:8167-8172. [PMID: 32991191 DOI: 10.1021/acs.orglett.0c03189] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Trifluorovinylzinc is a common synthetic intermediate for trifluorovinyl derivatives, including α,β,β-trifluorostyrenes and hexafluorobutadiene. Here, we report a novel synthetic approach for the formation of trifluorovinylzinc chloride via a C-F bond activation of tetrafluoroethylene (TFE), which is an industrially cost-effective bulk feedstock with a negligible GWP. The present system provides a practical synthetic route to various trifluorovinyl derivatives with very low energy consumption.
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Affiliation(s)
- Kotaro Kikushima
- College of Pharmaceutical Sciences, Ritsumeikan University, Kusatsu, Shiga 525-8577, Japan
| | - Yuusuke Etou
- Product R&D Department Chemicals Division, Daikin Industries, Ltd., Settu, Osaka 566-8585, Japan
| | - Ryohei Kamura
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Ippei Takeda
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Hideki Ito
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Masato Ohashi
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Sensuke Ogoshi
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
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89
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Lim S, Cho H, Jeong J, Jang M, Kim H, Cho SH, Lee E. Cobalt-Catalyzed Defluorosilylation of Aryl Fluorides via Grignard Reagent Formation. Org Lett 2020; 22:7387-7392. [PMID: 32903016 DOI: 10.1021/acs.orglett.0c02752] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Transition-metal-catalyzed transformations of the carbon-fluorine bond not only tackle an interesting problem of challenging bond activation but also offer new synthetic strategies where the relatively inert C-F bond is converted to versatile functional groups. Herein we report a practical cobalt-catalyzed silylation of aryl fluorides that uses a cheap electrophilic silicon source with magnesium. This method is compatible with various silicon sources and can be operated under aerobic conditions. Mechanistic studies support the in situ formation of a Grignard reagent, which is captured by the electrophilic silicon source.
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Affiliation(s)
- Soobin Lim
- Department of Chemistry, Pohang University of Science and Technology, Pohang 37673, Republic of Korea
| | - Hyungdo Cho
- Department of Chemistry, Pohang University of Science and Technology, Pohang 37673, Republic of Korea
| | - Jongheon Jeong
- Department of Chemistry, Pohang University of Science and Technology, Pohang 37673, Republic of Korea
| | - Minjae Jang
- Department of Chemistry, Pohang University of Science and Technology, Pohang 37673, Republic of Korea
| | - Hyunseok Kim
- Department of Chemistry, Pohang University of Science and Technology, Pohang 37673, Republic of Korea
| | - Seung Hwan Cho
- Department of Chemistry, Pohang University of Science and Technology, Pohang 37673, Republic of Korea
| | - Eunsung Lee
- Department of Chemistry, Pohang University of Science and Technology, Pohang 37673, Republic of Korea
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90
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Butcher TW, Yang JL, Hartwig JF. Copper-Catalyzed Defluorinative Borylation and Silylation of gem-Difluoroallyl Groups. Org Lett 2020; 22:6805-6809. [PMID: 32841569 DOI: 10.1021/acs.orglett.0c02321] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Stereodefined (Z)-fluoroalkenes are bioisosteres of amides and synthetic precursors to value-added fluorinated compounds, but their stereoselective synthesis remains challenging. Herein, we report a copper-catalyzed formal SN2' defluorinative borylation of 3-substituted 3,3-difluoropropenes to form 3-fluoroallylboronic esters in high yields with excellent Z/E ratios. The primary 3-fluoroallylboronic esters undergo several synthetic sequences involving SE2' substitutions, SN2' substitutions, and sigmatropic rearrangements to provide tertiary allylic fluorides.
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Affiliation(s)
- Trevor W Butcher
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Jonathan L Yang
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - John F Hartwig
- Department of Chemistry, University of California, Berkeley, California 94720, United States
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91
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Whyte A, Torelli A, Mirabi B, Zhang A, Lautens M. Copper-Catalyzed Borylative Difunctionalization of π-Systems. ACS Catal 2020. [DOI: 10.1021/acscatal.0c02758] [Citation(s) in RCA: 89] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Andrew Whyte
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
| | - Alexa Torelli
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
| | - Bijan Mirabi
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
| | - Anji Zhang
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
| | - Mark Lautens
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
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92
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Orsi DL, Douglas JT, Sorrentino JP, Altman RA. Cobalt-Catalyzed Selective Unsymmetrical Dioxidation of gem-Difluoroalkenes. J Org Chem 2020; 85:10451-10465. [PMID: 32697905 DOI: 10.1021/acs.joc.0c00415] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
gem-Difluoroalkenes represent valuable synthetic handles for organofluorine chemistry; however, most reactions of this substructure proceed through reactive intermediates prone to eliminate a fluorine atom and generate monofluorinated products. Taking advantage of the distinct reactivity of gem-difluoroalkenes, we present a cobalt-catalyzed regioselective unsymmetrical dioxygenation of gem-difluoroalkenes using phenols and molecular oxygen, which retains both fluorine atoms and provides β-phenoxy-β,β-difluorobenzyl alcohols. Mechanistic studies suggest that the reaction operates through a radical chain process initiated by Co(II)/O2/phenol and quenched by the Co-based catalyst. This mechanism enables the retention of both fluorine atoms, which contrasts most transition-metal-catalyzed reactions of gem-difluoroalkenes that typically involve defluorination.
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Affiliation(s)
- Douglas L Orsi
- Vanderbilt Center for Neuroscience Drug Discovery, Vanderbilt University, Nashville, Tennessee 37232, United States
| | - Justin T Douglas
- Molecular Structures Group, Nuclear Magnetic Resonance Laboratory, The University of Kansas, Lawrence, Kansas 66045, United States
| | - Jacob P Sorrentino
- Department of Medicinal Chemistry, The University of Kansas, Lawrence, Kansas 66045, United States
| | - Ryan A Altman
- Department of Medicinal Chemistry and Molecular Pharmacology, Purdue University, West Lafayette, Indiana 47907, United States.,Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
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93
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Wang M, Shi Z. Methodologies and Strategies for Selective Borylation of C-Het and C-C Bonds. Chem Rev 2020; 120:7348-7398. [PMID: 32597639 DOI: 10.1021/acs.chemrev.9b00384] [Citation(s) in RCA: 185] [Impact Index Per Article: 46.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Organoborons have emerged as versatile building blocks in organic synthesis to achieve molecular diversity and as carboxylic acid bioisosteres with broad applicability in drug discovery. Traditionally, these compounds are prepared by the substitution of Grignard/lithium reagents with electrophilic boron species and Brown hydroboration. Recent developments have provided new routes for the efficient preparation of organoborons by applying reactions using chemical feedstocks with leaving groups. As compared to the previous methods that used organic halides (I, Br, and Cl), the direct borylation of less reactive C-Het and C-C bonds has become highly important to get efficiency and functional-group compatibility. This Review aims to provide a comprehensive overview of this topic, including (1) C-F bond borylation, (2) C-O bond borylation, (3) C-S bond borylation, (4) C-N bond borylation, and (5) C-C bond borylation. Considerable attention is given to the strategies and mechanisms involved. We expect that this Review will inspire chemists to discover more efficient transformations to expand this field.
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Affiliation(s)
- Minyan Wang
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Zhuangzhi Shi
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
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94
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Poutrel P, Pannecoucke X, Jubault P, Poisson T. Stereoselective Synthesis of Terminal Monofluoroalkenes from Trifluoromethylated Alkenes. Org Lett 2020; 22:4858-4863. [PMID: 32484354 DOI: 10.1021/acs.orglett.0c01701] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Herein we report the hydrodefluorination reaction of trifluoromethylated alkenes to access terminal monofluoroalkenes. The use of LiAlH4 allowed the stereoselective synthesis of the terminal monofluoroalkenes in good to excellent yields with good to excellent diastereoselectivities. Mechanistic studies suggested a hydroalumination reaction followed by a stereoselective fluoride elimination.
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Affiliation(s)
- Pauline Poutrel
- Normandie Université, INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014), 76000 Rouen, France
| | - Xavier Pannecoucke
- Normandie Université, INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014), 76000 Rouen, France
| | - Philippe Jubault
- Normandie Université, INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014), 76000 Rouen, France
| | - Thomas Poisson
- Normandie Université, INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014), 76000 Rouen, France.,Institut Universitaire de France, 1 rue Descartes, 75231 Paris, France
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95
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Kojima Y, Takata T, Hirano K, Miura M. Synthesis of gem-Difluoroalkenes by Copper-catalyzed Regioselective Hydrodefluorination of 1-Trifluoromethylalkenes. CHEM LETT 2020. [DOI: 10.1246/cl.200163] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Yuki Kojima
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Tatsuaki Takata
- 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
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
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96
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Chen G, Wang L, Liu X, Liu P. Visible‐Light‐Induced Radical Defluoroborylation of Trifluoromethyl Alkenes: An Access to
gem
‐Difluoroallylboranes. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000257] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Guojun Chen
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, Generic Drug Research Center of Guizhou Province, School of PharmacyZunyi Medical University Zunyi 563000 People's Republic of China
| | - Liling Wang
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, Generic Drug Research Center of Guizhou Province, School of PharmacyZunyi Medical University Zunyi 563000 People's Republic of China
| | - Xiaozu Liu
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, Generic Drug Research Center of Guizhou Province, School of PharmacyZunyi Medical University Zunyi 563000 People's Republic of China
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of EducationZunyi Medical University Zunyi 563000 People's Republic of China
| | - Peijun Liu
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, Generic Drug Research Center of Guizhou Province, School of PharmacyZunyi Medical University Zunyi 563000 People's Republic of China
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of EducationZunyi Medical University Zunyi 563000 People's Republic of China
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97
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Mandal D, Chandra S, Neuman NI, Mahata A, Sarkar A, Kundu A, Anga S, Rawat H, Schulzke C, Mote KR, Sarkar B, Chandrasekhar V, Jana A. Activation of Aromatic C-F Bonds by a N-Heterocyclic Olefin (NHO). Chemistry 2020; 26:5951-5955. [PMID: 32027063 PMCID: PMC7317942 DOI: 10.1002/chem.202000276] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Indexed: 11/09/2022]
Abstract
A N-heterocyclic olefin (NHO), a terminal alkene selectively activates aromatic C-F bonds without the need of any additional catalyst. As a result, a straightforward methodology was developed for the formation of different fluoroaryl-substituted alkenes in which the central carbon-carbon double bond is in a twisted geometry.
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Affiliation(s)
- Debdeep Mandal
- Tata Institute of Fundamental Research HyderabadGopanpally, Hyderabad500107India
| | - Shubhadeep Chandra
- Institut für Chemie und BiochemieAnorganische ChemieFreie Universität BerlinFabeckstrasse 34–3614195BerlinGermany
- Institut für Anorganische ChemieLehrstuhl für Anorganische KoordinationschemieUniversität StuttgartPfaffenwaldring 5570569StuttgartGermany
| | - Nicolás I. Neuman
- Institut für Chemie und BiochemieAnorganische ChemieFreie Universität BerlinFabeckstrasse 34–3614195BerlinGermany
- Instituto de Desarrollo Tecnológico para la Industria QuímicaCCT Santa Fe CONICET-UNLColectora Ruta Nacional 168, Km 472, Paraje El Pozo3000Santa FeArgentina
| | - Alok Mahata
- Tata Institute of Fundamental Research HyderabadGopanpally, Hyderabad500107India
| | - Arighna Sarkar
- Tata Institute of Fundamental Research HyderabadGopanpally, Hyderabad500107India
| | - Abhinanda Kundu
- Tata Institute of Fundamental Research HyderabadGopanpally, Hyderabad500107India
| | - Srinivas Anga
- Tata Institute of Fundamental Research HyderabadGopanpally, Hyderabad500107India
| | - Hemant Rawat
- Tata Institute of Fundamental Research HyderabadGopanpally, Hyderabad500107India
| | - Carola Schulzke
- Institut für BiochemieUniversität GreifswaldFelix-Hausdorff-Strasse 417487GreifswaldGermany
| | - Kaustubh R. Mote
- Tata Institute of Fundamental Research HyderabadGopanpally, Hyderabad500107India
| | - Biprajit Sarkar
- Institut für Chemie und BiochemieAnorganische ChemieFreie Universität BerlinFabeckstrasse 34–3614195BerlinGermany
- Institut für Anorganische ChemieLehrstuhl für Anorganische KoordinationschemieUniversität StuttgartPfaffenwaldring 5570569StuttgartGermany
| | - Vadapalli Chandrasekhar
- Tata Institute of Fundamental Research HyderabadGopanpally, Hyderabad500107India
- Department of ChemistryIndian Institute of Technology KanpurKanpur208016India
| | - Anukul Jana
- Tata Institute of Fundamental Research HyderabadGopanpally, Hyderabad500107India
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98
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Ma Q, Wang Y, Tsui GC. Stereoselective Palladium‐Catalyzed C−F Bond Alkynylation of Tetrasubstituted
gem
‐Difluoroalkenes. Angew Chem Int Ed Engl 2020; 59:11293-11297. [DOI: 10.1002/anie.202002219] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Revised: 03/29/2020] [Indexed: 01/02/2023]
Affiliation(s)
- Qiao Ma
- Department of Chemistry The Chinese University of Hong Kong Shatin, New Territories Hong Kong SAR Hong Kong
| | - Yanhui Wang
- Department of Chemistry The Chinese University of Hong Kong Shatin, New Territories Hong Kong SAR Hong Kong
| | - Gavin Chit Tsui
- Department of Chemistry The Chinese University of Hong Kong Shatin, New Territories Hong Kong SAR Hong Kong
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99
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Ma Q, Wang Y, Tsui GC. Stereoselective Palladium‐Catalyzed C−F Bond Alkynylation of Tetrasubstituted
gem
‐Difluoroalkenes. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202002219] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Qiao Ma
- Department of Chemistry The Chinese University of Hong Kong Shatin, New Territories Hong Kong SAR Hong Kong
| | - Yanhui Wang
- Department of Chemistry The Chinese University of Hong Kong Shatin, New Territories Hong Kong SAR Hong Kong
| | - Gavin Chit Tsui
- Department of Chemistry The Chinese University of Hong Kong Shatin, New Territories Hong Kong SAR Hong Kong
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100
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Matavos-Aramyan S, Soukhakian S, Jazebizadeh MH. Mononuclear Cu Complexes Based on Nitrogen Heterocyclic Carbene: A Comprehensive Review. Top Curr Chem (Cham) 2020; 378:39. [PMID: 32367181 DOI: 10.1007/s41061-020-00304-8] [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: 02/06/2020] [Accepted: 04/16/2020] [Indexed: 11/28/2022]
Abstract
During the last decade, organometallic, coordination, and catalytic chemistry of the three-dimensional metals such as copper (Cu) has been greatly affected by the emergence of nitrogen heterocyclic carbene (NHC) complexes. The NHCs, and in particular the mononuclear CuI-based ones, have been proven vastly useful in several applications such as in biosynthesis, catalysis, photochemistry, etc. This review tries to thoroughly describe a series of mononuclear CuI NHC complexes and their subcategories such as heteroleptics, and bidentate and tridentate heteroatom complexes, and give some detailed insights on their development, emergence, and applications. A brief outlook is also disclosed to enable other researchers to further develop a platform for future advances and studies in the field of CuI-based NHCs.
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Affiliation(s)
- Sina Matavos-Aramyan
- Research and Development Department, Division of Chemistry, Raazi Environmental Protection Foundation, Shiraz, Iran.
| | - Sadaf Soukhakian
- Research and Development Department, Division of Chemistry, Raazi Environmental Protection Foundation, Shiraz, Iran
| | - Mohammad Hossein Jazebizadeh
- Research and Development Department, Division of Chemistry, Raazi Environmental Protection Foundation, Shiraz, Iran
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