1
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Bock MJ, Denmark SE. Rapid, Homogenous, B-Alkyl Suzuki-Miyaura Cross-Coupling of Boronic Esters. J Org Chem 2024. [PMID: 38483187 DOI: 10.1021/acs.joc.4c00089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2024]
Abstract
A rapid, anhydrous Suzuki-Miyaura cross-coupling of alkylboronic esters with aryl halides is described. Parallel experimentation revealed that the combination of AntPhos, an oxaphosphole ligand, neopentyldiol alkylboronic esters, and potassium trimethylsilanolate (TMSOK) enables successful cross-coupling. In general, reactions proceed in under 1 h with good yields and high linear/branched (l/b) selectivities. Crucially, two literature examples which previously took >20 h to reach completion were accomplished in a fraction of the time with the method described herein. Mechanistic studies revealed that the reaction proceeds through a stereoretentive pathway and identified the boronic ester skeleton as a predominant pathway for deleterious protodehalogenation.
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Affiliation(s)
- Matthew J Bock
- Department of Chemistry, University of Illinois at Urbana-Champaign, 600 S. Matthews Ave, Urbana, Illinois 61801, United States
| | - Scott E Denmark
- Department of Chemistry, University of Illinois at Urbana-Champaign, 600 S. Matthews Ave, Urbana, Illinois 61801, United States
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2
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Roh B, Farah AO, Kim B, Feoktistova T, Moeller F, Kim KD, Cheong PHY, Lee HG. Stereospecific Acylative Suzuki–Miyaura Cross-Coupling: General Access to Optically Active α-Aryl Carbonyl Compounds. J Am Chem Soc 2023; 145:7075-7083. [PMID: 37016901 DOI: 10.1021/jacs.3c00637] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
Abstract
A novel strategy for the stereospecific Pd-catalyzed acylative cross-coupling of enantiomerically enriched alkylboron compounds has been developed. The protocol features an extremely high level of enantiospecificity to allow facile access to synthetically challenging and valuable chiral ketones and carboxylic acid derivatives. The use of a sterically encumbered and electron-rich phosphine ligand proved to be crucial for the success of the reaction. Furthermore, on the basis of experimental and computational studies, a unique mechanism for the transmetalation, assisted by the noncovalent interactions of the C(sp3)-based organoboron reagent, has been identified.
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Affiliation(s)
- Byeongdo Roh
- Department of Chemistry, Seoul National University, Seoul 08826, Korea
| | - Abdikani Omar Farah
- Department of Chemistry, Oregon State University, 153 Gilbert Hall, Corvallis, Oregon 97331-2145, United States
| | - Beomsu Kim
- Department of Chemistry, Seoul National University, Seoul 08826, Korea
| | - Taisiia Feoktistova
- Department of Chemistry, Oregon State University, 153 Gilbert Hall, Corvallis, Oregon 97331-2145, United States
| | - Finn Moeller
- Department of Chemistry, Johannes Gutenberg University Mainz, 55128 Mainz, Germany
| | - Kyeong Do Kim
- Department of Chemistry, Seoul National University, Seoul 08826, Korea
| | - Paul Ha-Yeon Cheong
- Department of Chemistry, Oregon State University, 153 Gilbert Hall, Corvallis, Oregon 97331-2145, United States
| | - Hong Geun Lee
- Department of Chemistry, Seoul National University, Seoul 08826, Korea
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3
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Zuccarello G, Batiste SM, Cho H, Fu GC. Enantioselective Synthesis of α-Aminoboronic Acid Derivatives via Copper-Catalyzed N-Alkylation. J Am Chem Soc 2023; 145:3330-3334. [PMID: 36745524 PMCID: PMC10079214 DOI: 10.1021/jacs.3c00038] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Due to burgeoning interest in the pharmaceutical industry in exploiting optically active α-aminoboronic derivatives as bioisosteres of α-amino acid derivatives, the discovery of methods for their catalytic asymmetric synthesis is an important challenge. Herein, we establish that a chiral copper catalyst (generated in situ from commercially available components) can achieve the enantioselective synthesis of α-aminoboronic derivatives via the coupling of two readily available partners, a carbamate and a racemic α-chloroboronate ester. Furthermore, we describe mechanistic studies that played a key role in the development of this new method and that provide insight into the optimized process.
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Affiliation(s)
- Giuseppe Zuccarello
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Suzanne M Batiste
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Hyungdo Cho
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Gregory C Fu
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
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4
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Li M, Peng GR, Yang X, Ma ZN, Xie JB. Enantio- and diastereoselective boron conjugate addition to α-alkyl α,β-unsaturated esters. Org Biomol Chem 2022; 21:53-58. [PMID: 36468637 DOI: 10.1039/d2ob01928k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
We developed a copper-catalyzed enantio- and diastereoselective boron conjugate addition to α-alkyl α,β-unsaturated esters under base-free conditions. The approach showed excellent enantioselectivities (87-99% ee) and moderate to good conversions (51-99%), albeit with moderate diastereoselectivities (1 : 1-17 : 1 dr). The synthetic utility of this protocol was demonstrated.
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Affiliation(s)
- Meng Li
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling 712100, China.
| | - Guang-Rui Peng
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling 712100, China.
| | - Xuan Yang
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling 712100, China.
| | - Zhen-Ning Ma
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling 712100, China.
| | - Jian-Bo Xie
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling 712100, China.
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5
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Pavlíčková T, Stöckl Y, Marek I. Synthesis and Functionalization of Tertiary Propargylic Boronic Esters by Alkynyllithium-Mediated 1,2-Metalate Rearrangement of Borylated Cyclopropanes. Org Lett 2022; 24:8901-8906. [PMID: 36446049 PMCID: PMC9791689 DOI: 10.1021/acs.orglett.2c03756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Implementing the use of alkynyllithium reagents in a stereospecific 1,2-metalate rearrangement-mediated ring opening of polysubstituted cyclopropyl boronic esters provides a variety of tertiary pinacol boranes bearing adjacent tertiary or quaternary carbon stereocenters with high levels of diastereomeric purity. The potential of this strategy was demonstrated through a selection of α- and γ-functionalization of the propargyl boronic esters.
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6
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Ohmura T. Development of Catalytic Reactions that Enable Efficient Conversions of sp<sup>3</sup> Carbon-Hydrogen and Carbon-Boron Bonds. J SYN ORG CHEM JPN 2022. [DOI: 10.5059/yukigoseikyokaishi.80.1113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Toshimichi Ohmura
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology
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7
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N-Iodosuccinimide as a Precatalyst for C–N Bond-Forming Reactions from Alcohols under Mild Reaction Conditions. Catalysts 2022. [DOI: 10.3390/catal12111368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
We report an efficient and selective methodology for the direct cross-coupling of alcohols with N-nucleophiles mediated by N-iodosuccinimide (NIS) as the non-metal, commercially available, low-cost, and most effective precatalyst among the N-halosuccinimides (NXSs) under mild reaction conditions enhancing the green chemical profiles of these reactions. The scale-up procedure was accomplished with almost quantitative yield, verifying the presented method’s synthetic applicability and potential for industrial application.
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8
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Enantioselective synthesis of α-aminoboronates by NiH-catalysed asymmetric hydroamidation of alkenyl boronates. Nat Commun 2022; 13:5630. [PMID: 36163363 PMCID: PMC9512809 DOI: 10.1038/s41467-022-33411-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Accepted: 09/14/2022] [Indexed: 11/28/2022] Open
Abstract
Chiral α-aminoboronic acids and their derivatives are generally useful as bioactive compounds and some have been approved as therapeutic agents. Here we report a NiH-catalysed asymmetric hydroamidation process that with a simple amino alcohol ligand can easily produce a wide range of highly enantioenriched α-aminoboronates from alkenyl boronates and dioxazolones under mild conditions. The reaction is proposed to proceed by an enantioselective hydrometallation followed by an inner-sphere nitrenoid transfer and C–N bond forming sequence. The synthetic utility of this transformation was demonstrated by the efficient synthesis of a current pharmaceutical agent, Vaborbactam. Enantioenriched α-aminoboronic acid, a structural unit in many bioactive molecules, is also a valuable synthon in organic synthesis. Here, the authors disclose a NiH-catalysed asymmetric hydroamidation process for their direct synthesis.
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9
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LaPorte AJ, Shi Y, Hein JE, Burke MD. Stereospecific Csp 3 Suzuki–Miyaura Cross-Coupling That Evades β-Oxygen Elimination. ACS Catal 2022. [DOI: 10.1021/acscatal.2c03245] [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)
- Antonio J. LaPorte
- Department of Chemistry, University of Illinois, Urbana, Illinois 61801, United States
| | - Yao Shi
- Department of Chemistry, University of British Columbia, Vancouver, British Columbia V6T 1Z3, Canada
| | - Jason E. Hein
- Department of Chemistry, University of British Columbia, Vancouver, British Columbia V6T 1Z3, Canada
| | - Martin D. Burke
- Department of Chemistry, University of Illinois, Urbana, Illinois 61801, United States
- Carle Illinois College of Medicine, University of Illinois, Urbana, Illinois 61801, United States
- Department of Biochemistry, University of Illinois, Urbana, Illinois 61801, United States
- Arnold and Mabel Beckman Institute, University of Illinois, Urbana, Illinois 61801, United States
- Carl R. Woese Institute for Genomic Biology, University of Illinois, Urbana, Illinois 61801, United States
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10
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Akagawa H, Tsuchiya N, Morinaga A, Katayama Y, Sumimoto M, Nishikata T. Carboxamide-Directed Stereospecific Couplings of Chiral Tertiary Alkyl Halides with Terminal Alkynes. ACS Catal 2022. [DOI: 10.1021/acscatal.2c02433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hiroki Akagawa
- Graiduate School of Science and Engineering, Yamaguchi University, 2-16-1 Tokiwadai, Ube, Yamaguchi 755-8611, Japan
| | - Naoki Tsuchiya
- Graiduate School of Science and Engineering, Yamaguchi University, 2-16-1 Tokiwadai, Ube, Yamaguchi 755-8611, Japan
| | - Asuka Morinaga
- Graiduate School of Science and Engineering, Yamaguchi University, 2-16-1 Tokiwadai, Ube, Yamaguchi 755-8611, Japan
| | - Yu Katayama
- Graiduate School of Science and Engineering, Yamaguchi University, 2-16-1 Tokiwadai, Ube, Yamaguchi 755-8611, Japan
| | - Michinori Sumimoto
- Graiduate School of Science and Engineering, Yamaguchi University, 2-16-1 Tokiwadai, Ube, Yamaguchi 755-8611, Japan
| | - Takashi Nishikata
- Graiduate School of Science and Engineering, Yamaguchi University, 2-16-1 Tokiwadai, Ube, Yamaguchi 755-8611, Japan
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11
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Corpas J, Mauleón P, Gómez Arrayás R, Carretero JC. E/Z
Photoisomerization of Olefins as an Emergent Strategy for the Control of Stereodivergence in Catalysis. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200199] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Javier Corpas
- Department of Organic Chemistry Institute for Advanced Research in Chemical Sciences (IAdChem) Center for Innovation in Advanced Chemistry (ORFEO-CINQA). Universidad Autónoma de Madrid Cantoblanco 28049 Madrid Spain
| | - Pablo Mauleón
- Department of Organic Chemistry Institute for Advanced Research in Chemical Sciences (IAdChem) Center for Innovation in Advanced Chemistry (ORFEO-CINQA). Universidad Autónoma de Madrid Cantoblanco 28049 Madrid Spain
| | - Ramón Gómez Arrayás
- Department of Organic Chemistry Institute for Advanced Research in Chemical Sciences (IAdChem) Center for Innovation in Advanced Chemistry (ORFEO-CINQA). Universidad Autónoma de Madrid Cantoblanco 28049 Madrid Spain
| | - Juan C. Carretero
- Department of Organic Chemistry Institute for Advanced Research in Chemical Sciences (IAdChem) Center for Innovation in Advanced Chemistry (ORFEO-CINQA). Universidad Autónoma de Madrid Cantoblanco 28049 Madrid Spain
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12
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Li Z, Xu R, Guo H, Yang H, Xu G, Shi E, Xiao J, Tang W. Enantioselective Rhodium-Catalyzed Hydrogenation of ( Z)- N-Sulfonyl-α-dehydroamido Boronic Esters. Org Lett 2022; 24:714-719. [PMID: 34978454 DOI: 10.1021/acs.orglett.1c04157] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Highly enantioselective rhodium-catalyzed hydrogenation of (Z)-N-sulfonyl-α-dehydroamido boronic esters is realized for the first time using a JosiPhos-type ligand. This method has enabled convenient synthesis of a series of enantio-enriched N-sulfonyl-α-amido boronic esters in good yields and excellent enantioselectivities (up to 99% ee).
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Affiliation(s)
- Zhenya Li
- State Key Laboratory of NBC Protection for Civilian, Beijing 102205, China
| | - Ronghua Xu
- State Key Laboratory of Bio-Organic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, 345 Ling Ling Rd, Shanghai 200032, China
| | - Huichuang Guo
- State Key Laboratory of NBC Protection for Civilian, Beijing 102205, China
| | - He Yang
- State Key Laboratory of Bio-Organic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, 345 Ling Ling Rd, Shanghai 200032, China
| | - Guangqing Xu
- State Key Laboratory of Bio-Organic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, 345 Ling Ling Rd, Shanghai 200032, China
| | - Enxue Shi
- State Key Laboratory of NBC Protection for Civilian, Beijing 102205, China
| | - Junhua Xiao
- State Key Laboratory of NBC Protection for Civilian, Beijing 102205, China
| | - Wenjun Tang
- State Key Laboratory of Bio-Organic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, 345 Ling Ling Rd, Shanghai 200032, China.,School of Chemistry and Material Sciences, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, 1 Sub-lane Xiangshan, Hangzhou 310024, China
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13
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Ming W, Soor HS, Liu X, Trofimova A, Yudin AK, Marder TB. α-Aminoboronates: recent advances in their preparation and synthetic applications. Chem Soc Rev 2021; 50:12151-12188. [PMID: 34585200 DOI: 10.1039/d1cs00423a] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
α-Aminoboronic acids and their derivatives are useful as bioactive agents. Thus far, three compounds containing an α-aminoboronate motif have been approved by the Food and Drug Administration (FDA) as protease inhibitors, and more are currently undergoing clinical trials. In addition, α-aminoboronic acids and their derivatives have found applications in organic synthesis, e.g. as α-aminomethylation reagents for the synthesis of chiral nitrogen-containing molecules, as nucleophiles for preparing valuable vicinal amino alcohols, and as bis-nucleophiles in the construction of valuable small molecule scaffolds. This review summarizes new methodology for the preparation of α-aminoboronates, including highlights of asymmetric synthetic methods and mechanistic explanations of reactivity. Applications of α-aminoboronates as versatile synthetic building blocks are also discussed.
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Affiliation(s)
- Wenbo Ming
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany.
| | - Harjeet S Soor
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, 80 Saint George Street, Toronto, Ontario M5S 3H6, Canada.
| | - Xiaocui Liu
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany.
| | - Alina Trofimova
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, 80 Saint George Street, Toronto, Ontario M5S 3H6, Canada.
| | - Andrei K Yudin
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, 80 Saint George Street, Toronto, Ontario M5S 3H6, Canada.
| | - Todd B Marder
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany.
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14
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Šterman A, Košmrlj J, Žigart N, Gobec S, Sosič I, Časar Z. Catalytic Approach to Diverse α‐Aminoboronic Acid Derivatives by Iridium‐Catalyzed Hydrogenation of Trifluoroborate‐Iminiums. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202001350] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Andrej Šterman
- University of Ljubljana Faculty of Pharmacy Aškerčeva cesta 7 SI-1000 Ljubljana Slovenia
| | - Janez Košmrlj
- University of Ljubljana Faculty of Chemistry and Chemical Technology Večna pot 113 1000 Ljubljana Slovenia
| | - Nina Žigart
- Lek Pharmaceuticals d.d. Sandoz Development Center Slovenia Verovškova ulica 57 1526 Ljubljana Slovenia
| | - Stanislav Gobec
- University of Ljubljana Faculty of Pharmacy Aškerčeva cesta 7 SI-1000 Ljubljana Slovenia
| | - Izidor Sosič
- University of Ljubljana Faculty of Pharmacy Aškerčeva cesta 7 SI-1000 Ljubljana Slovenia
| | - Zdenko Časar
- University of Ljubljana Faculty of Pharmacy Aškerčeva cesta 7 SI-1000 Ljubljana Slovenia
- Lek Pharmaceuticals d.d. Sandoz Development Center Slovenia Verovškova ulica 57 1526 Ljubljana Slovenia
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15
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Murray B, Zhao S, Aramini JM, Wang H, Biscoe MR. The Stereochemical Course of Pd-Catalyzed Suzuki Reactions Using Primary Alkyltrifluoroborate Nucleophiles. ACS Catal 2021; 11:2504-2510. [PMID: 34667656 DOI: 10.1021/acscatal.0c04325] [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] [Indexed: 11/29/2022]
Abstract
Using deuterium-labeled stereochemical probes, we show that primary alkyltrifluoroborate nucleophiles undergo transmetalation to palladium exclusively via a stereoretentive pathway and that the resulting stereospecificity is broadly independent of electronic and steric effects. This stands in stark contrast to the stereochemical course of transmetalation for secondary alkyltrifluoroborates, which varies between net stereoretention and net stereoinversion depending upon the electronic properties of the supporting phosphine ligand, the electronic properties of the aryl electrophile, and the steric properties of the alkylboron nucleophile. In this study, we additionally show that the stereochemical course of transmetalation for secondary alkylboron reagents can be under reagent steric control, while no such steric control exists for analogous primary alkylboron nucleophiles. The combined study reveals fundamental mechanistic differences between transmetalations of primary and secondary alkylboron reagents in Pd-catalyzed Suzuki reactions.
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Affiliation(s)
- Benjamin Murray
- Department of Chemistry & Biochemistry, The City College of New York (CCNY), 160 Convent Avenue, New York, New York 10031, United States
- Ph.D. Program in Chemistry, The Graduate Center of the City University of New York (CUNY), 365 Fifth Avenue, New York, New York 10016, United States
| | - Shibin Zhao
- Department of Chemistry & Biochemistry, The City College of New York (CCNY), 160 Convent Avenue, New York, New York 10031, United States
- Ph.D. Program in Chemistry, The Graduate Center of the City University of New York (CUNY), 365 Fifth Avenue, New York, New York 10016, United States
| | - James M. Aramini
- CUNY Advanced Science Research Center, 85 Saint Nicholas Terrace, New York, New York 10031, United States
| | - Hsin Wang
- Department of Chemistry & Biochemistry, The City College of New York (CCNY), 160 Convent Avenue, New York, New York 10031, United States
| | - Mark R. Biscoe
- Department of Chemistry & Biochemistry, The City College of New York (CCNY), 160 Convent Avenue, New York, New York 10031, United States
- Ph.D. Program in Chemistry, The Graduate Center of the City University of New York (CUNY), 365 Fifth Avenue, New York, New York 10016, United States
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16
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Nguyen K, Clement HA, Bernier L, Coe JW, Farrell W, Helal CJ, Reese MR, Sach NW, Lee JC, Hall DG. Catalytic Enantioselective Synthesis of a cis-β-Boronyl Cyclobutylcarboxyester Scaffold and Its Highly Diastereoselective Nickel/Photoredox Dual-Catalyzed Csp3–Csp2 Cross-Coupling to Access Elusive trans-β-Aryl/Heteroaryl Cyclobutylcarboxyesters. ACS Catal 2020. [DOI: 10.1021/acscatal.0c04520] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Kevin Nguyen
- Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
| | - Helen A. Clement
- Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
| | - Louise Bernier
- Pfizer Worldwide Research and Development, La Jolla Laboratories, 10770 Science Center Drive, San Diego, California 92121, United States
| | - Jotham W. Coe
- Pfizer Worldwide Research and Development, Eastern Point Road, Groton, Connecticut 06340, United States
| | - William Farrell
- Pfizer Worldwide Research and Development, La Jolla Laboratories, 10770 Science Center Drive, San Diego, California 92121, United States
| | - Christopher J. Helal
- Pfizer Worldwide Research and Development, Eastern Point Road, Groton, Connecticut 06340, United States
| | - Matthew R. Reese
- Pfizer Worldwide Research and Development, Eastern Point Road, Groton, Connecticut 06340, United States
| | - Neal W. Sach
- Pfizer Worldwide Research and Development, La Jolla Laboratories, 10770 Science Center Drive, San Diego, California 92121, United States
| | - Jack C. Lee
- Pfizer Worldwide Research and Development, Eastern Point Road, Groton, Connecticut 06340, United States
| | - Dennis G. Hall
- Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
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17
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Yoshinaga Y, Yamamoto T, Suginome M. Enantioconvergent Cu-Catalyzed Intramolecular C-C Coupling at Boron-Bound C(sp 3) Atoms of α-Aminoalkylboronates Using a C1-Symmetrical 2,2'-Bipyridyl Ligand Attached to a Helically Chiral Macromolecular Scaffold. J Am Chem Soc 2020; 142:18317-18323. [PMID: 33063989 DOI: 10.1021/jacs.0c09080] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Enantioconvergent intramolecular coupling of α-(2-bromobenzoylamino)benzylboronic esters was achieved using a copper catalyst having helically chiral macromolecular bipyridyl ligand, PQXbpy. Racemic α-(2-bromobenzoylamino)benzylboronic esters were converted into (R)-configured 3-arylisoindolinones with high enantiopurity using right-handed helical PQXbpy as a chiral ligand in a toluene/CHCl3 mixed solvent. When enantiopure (R)- and (S)-configured boronates were separately reacted under the same reaction conditions, both afforded (R)-configured products through formal stereoinvertive and stereoretentive processes, respectively. From these results, a mechanism involving deracemization of organocopper intermediates in the presence of PQXbpy is assumed. PQXbpy switched its helical sense to left-handed when a toluene/1,1,2-trichloroethane mixed solvent was used, resulting in the formation of the corresponding (S)-products from the racemic starting material.
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Affiliation(s)
- Yukako Yoshinaga
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Takeshi Yamamoto
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Michinori Suginome
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
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18
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Stereoselectivity in Pd-catalysed cross-coupling reactions of enantioenriched nucleophiles. Nat Rev Chem 2020; 4:584-599. [PMID: 33869786 DOI: 10.1038/s41570-020-00222-9] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Advances in Pd-catalysed cross-coupling reactions have facilitated the development of stereospecific variants enabling the use of configurationally stable, enantioenriched, main-group organometallic nucleophiles to form C(sp 3)-C(sp 2) bonds. Such stereospecific cross-coupling reactions constitute a powerful synthetic approach to attaining precise 3D control of molecular structure, allowing new stereogenic centres to be readily introduced into molecular architectures. Examples of stereospecific, Pd-catalysed cross-coupling reactions have been reported for isolable enantioenriched alkylboron, alkyltin, alkylgermanium and alkylsilicon nucleophiles. In these reactions, a single, dominant stereospecific pathway of transmetallation to palladium is required to effect efficient chirality transfer to the cross-coupled product. However, the potential for competing stereoretentive and stereoinvertive pathways of transmetallation complicates the stereochemical transfer in these processes and impedes the rational development of new stereospecific cross-coupling variants. In this Review, we describe the use of enantioenriched organometallic nucleophiles in stereospecific, Pd-catalysed cross-coupling reactions. We focus on systems involving well-defined, isolable, enantioenriched nucleophiles in which a clear stereochemical course of transmetallation is followed. Specific modes of electronic activation that influence the reactivity of alkylmetal nucleophiles are described and presented in the context of their impact on the stereochemical course of cross-coupling reactions. We expect that this Review will serve as a valuable resource to assist in deconvoluting the many considerations that potentially impact the stereochemical outcome of Pd-catalysed cross-coupling reactions.
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19
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Baumgartner Y, Baudoin O. One-Pot Alkene Hydroboration/Palladium-Catalyzed Migratory Suzuki–Miyaura Cross-Coupling. ACS Catal 2020. [DOI: 10.1021/acscatal.0c02755] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yann Baumgartner
- Department of Chemistry, University of Basel, St. Johanns-Ring 19, CH-4056 Basel, Switzerland
| | - Olivier Baudoin
- Department of Chemistry, University of Basel, St. Johanns-Ring 19, CH-4056 Basel, Switzerland
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20
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Yoshinaga Y, Yamamoto T, Suginome M. Stereoinvertive C–C Bond Formation at the Boron‐Bound Stereogenic Centers through Copper‐Bipyridine‐Catalyzed Intramolecular Coupling of α‐Aminobenzylboronic Esters. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201914864] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Yukako Yoshinaga
- Department of Synthetic Chemistry and Biological Chemistry Graduate School of Engineering Kyoto University, Katsura, Nishikyo-ku Kyoto 615-8510 Japan
| | - Takeshi Yamamoto
- Department of Synthetic Chemistry and Biological Chemistry Graduate School of Engineering Kyoto University, Katsura, Nishikyo-ku Kyoto 615-8510 Japan
| | - Michinori Suginome
- Department of Synthetic Chemistry and Biological Chemistry Graduate School of Engineering Kyoto University, Katsura, Nishikyo-ku Kyoto 615-8510 Japan
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21
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Yoshinaga Y, Yamamoto T, Suginome M. Stereoinvertive C–C Bond Formation at the Boron‐Bound Stereogenic Centers through Copper‐Bipyridine‐Catalyzed Intramolecular Coupling of α‐Aminobenzylboronic Esters. Angew Chem Int Ed Engl 2020; 59:7251-7255. [DOI: 10.1002/anie.201914864] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Revised: 01/24/2020] [Indexed: 11/09/2022]
Affiliation(s)
- Yukako Yoshinaga
- Department of Synthetic Chemistry and Biological Chemistry Graduate School of Engineering Kyoto University, Katsura, Nishikyo-ku Kyoto 615-8510 Japan
| | - Takeshi Yamamoto
- Department of Synthetic Chemistry and Biological Chemistry Graduate School of Engineering Kyoto University, Katsura, Nishikyo-ku Kyoto 615-8510 Japan
| | - Michinori Suginome
- Department of Synthetic Chemistry and Biological Chemistry Graduate School of Engineering Kyoto University, Katsura, Nishikyo-ku Kyoto 615-8510 Japan
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22
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Ma X, Zhao H, Binayeva M, Ralph G, Diane M, Zhao S, Wang CY, Biscoe MR. A General Approach to Stereospecific Cross-Coupling Reactions of Nitrogen-Containing Stereocenters. Chem 2020; 6:781-791. [PMID: 32440572 DOI: 10.1016/j.chempr.2020.02.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A novel strategy employing cyclohexyl spectator ligands in Stille cross-coupling reactions has been developed as a general solution to the long-standing challenge of conducting stereospecific cross-coupling reactions at nitrogen-containing stereocenters. This method enables direct access to enantioenriched products that are difficult (or impossible) to obtain via alternative preparative methods. Selective and predictable transfer of a single secondary alkyl unit can be achieved under reaction conditions that exploit subtle electronic differences between activated and unactivated alkyl units. Through this approach, enantioenriched α-stannylated nitrogen-containing stereocenters undergo Pd-catalyzed arylation and acylation reactions with exceptionally high stereofidelity in all instances investigated. We demonstrate this process by using α-stannylated pyrrolidine, azetidine, and open-chain (benzylic and non-benzylic) nucleophiles in stereospecific reactions. This process will facilitate rapid and reliable access to enantioenriched compounds possessing nitrogen-substituted stereocenters, which constitute ubiquitous structural motifs in biologically active compounds emerging from the drug-discovery process.
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Affiliation(s)
- Xinghua Ma
- Department of Chemistry & Biochemistry, The City College of New York, 160 Convent Ave., New York, NY 10031, USA.,PhD Program in Chemistry, Graduate Center of the City University of New York, 365 Fifth Ave., New York, NY 10016, USA
| | - Haoran Zhao
- Department of Chemistry & Biochemistry, The City College of New York, 160 Convent Ave., New York, NY 10031, USA.,PhD Program in Chemistry, Graduate Center of the City University of New York, 365 Fifth Ave., New York, NY 10016, USA
| | - Meruyert Binayeva
- Department of Chemistry & Biochemistry, The City College of New York, 160 Convent Ave., New York, NY 10031, USA.,PhD Program in Chemistry, Graduate Center of the City University of New York, 365 Fifth Ave., New York, NY 10016, USA
| | - Glenn Ralph
- Department of Chemistry & Biochemistry, The City College of New York, 160 Convent Ave., New York, NY 10031, USA.,PhD Program in Chemistry, Graduate Center of the City University of New York, 365 Fifth Ave., New York, NY 10016, USA
| | - Mohamed Diane
- Department of Chemistry & Biochemistry, The City College of New York, 160 Convent Ave., New York, NY 10031, USA.,PhD Program in Chemistry, Graduate Center of the City University of New York, 365 Fifth Ave., New York, NY 10016, USA
| | - Shibin Zhao
- Department of Chemistry & Biochemistry, The City College of New York, 160 Convent Ave., New York, NY 10031, USA.,PhD Program in Chemistry, Graduate Center of the City University of New York, 365 Fifth Ave., New York, NY 10016, USA
| | - Chao-Yuan Wang
- Department of Chemistry & Biochemistry, The City College of New York, 160 Convent Ave., New York, NY 10031, USA.,PhD Program in Chemistry, Graduate Center of the City University of New York, 365 Fifth Ave., New York, NY 10016, USA
| | - Mark R Biscoe
- Department of Chemistry & Biochemistry, The City College of New York, 160 Convent Ave., New York, NY 10031, USA.,PhD Program in Chemistry, Graduate Center of the City University of New York, 365 Fifth Ave., New York, NY 10016, USA.,Lead Contact
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23
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Lee H, Lee S, Yun J. Pd-Catalyzed Stereospecific Cross-Coupling of Chiral α-Borylalkylcopper Species with Aryl Bromides. ACS Catal 2020. [DOI: 10.1021/acscatal.9b05213] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Hyesu Lee
- Department of Chemistry, Sungkyunkwan University, Suwon 16419, Korea
| | - Soyeon Lee
- Department of Chemistry, Sungkyunkwan University, Suwon 16419, Korea
| | - Jaesook Yun
- Department of Chemistry, Sungkyunkwan University, Suwon 16419, Korea
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24
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Ming W, Liu X, Friedrich A, Krebs J, Marder TB. The Borono–Strecker Reaction: Synthesis of α-Aminoboronates via a Multicomponent Reaction of Carbonyl Compounds, Amines, and B2pin2. Org Lett 2019; 22:365-370. [DOI: 10.1021/acs.orglett.9b03773] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Wenbo Ming
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Xiaocui Liu
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Alexandra Friedrich
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Johannes Krebs
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Todd B. Marder
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
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25
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Lou Y, Wang J, Gong G, Guan F, Lu J, Wen J, Zhang X. Catalytic asymmetric hydrogenation of ( Z)-α-dehydroamido boronate esters: direct route to alkyl-substituted α-amidoboronic esters. Chem Sci 2019; 11:851-855. [PMID: 34123062 PMCID: PMC8146211 DOI: 10.1039/c9sc04534a] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2019] [Accepted: 11/21/2019] [Indexed: 12/16/2022] Open
Abstract
The direct catalytic asymmetric hydrogenation of (Z)-α-dehydroamino boronate esters was realized. Using this approach, a class of therapeutically relevant alkyl-substituted α-amidoboronic esters was easily synthesized in high yields with generally excellent enantioselectivities (up to 99% yield and 99% ee). The utility of the products has been demonstrated by transformation to their corresponding boronic acid derivatives by a Pd-catalyzed borylation reaction and an efficient synthesis of a potential intermediate of bortezomib. The clean, atom-economic and environment friendly nature of this catalytic asymmetric hydrogenation process would make this approach a new alternative for the production of alkyl-substituted α-amidoboronic esters of great potential in the area of organic synthesis and medicinal chemistry.
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Affiliation(s)
- Yazhou Lou
- Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology Shenzhen Guangdong 518055 People's Republic of China
| | - Jun Wang
- Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology Shenzhen Guangdong 518055 People's Republic of China
| | - Gelin Gong
- Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology Shenzhen Guangdong 518055 People's Republic of China
| | - Fanfu Guan
- Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology Shenzhen Guangdong 518055 People's Republic of China
| | - Jiaxiang Lu
- Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology Shenzhen Guangdong 518055 People's Republic of China
| | - Jialin Wen
- Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology Shenzhen Guangdong 518055 People's Republic of China
- Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology Shenzhen 518000 People's Republic of China
| | - Xumu Zhang
- Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology Shenzhen Guangdong 518055 People's Republic of China
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26
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Zheng P, Han X, Hu J, Zhao X, XU T. Enantioselective Copper-Catalyzed Desymmetrization of 1,3-Diketones Involving Borylation of Styrenes. Org Lett 2019; 21:6040-6044. [DOI: 10.1021/acs.orglett.9b02199] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Purui Zheng
- Shanghai Key Laboratory of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, 1239 Siping Road, Shanghai, 200092, People’s Republic of China
| | - Xiaoyu Han
- Shanghai Key Laboratory of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, 1239 Siping Road, Shanghai, 200092, People’s Republic of China
| | - Jiao Hu
- Shanghai Key Laboratory of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, 1239 Siping Road, Shanghai, 200092, People’s Republic of China
| | - Xiaoming Zhao
- Shanghai Key Laboratory of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, 1239 Siping Road, Shanghai, 200092, People’s Republic of China
| | - Tao XU
- Shanghai Key Laboratory of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, 1239 Siping Road, Shanghai, 200092, People’s Republic of China
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27
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Chakrabarty S, Palencia H, Morton MD, Carr RO, Takacs JM. Facile access to functionalized chiral secondary benzylic boronic esters via catalytic asymmetric hydroboration. Chem Sci 2019; 10:4854-4861. [PMID: 31183035 PMCID: PMC6520923 DOI: 10.1039/c8sc05613g] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Accepted: 03/25/2019] [Indexed: 12/29/2022] Open
Abstract
Allylic and homoallylic phosphonates bearing an aryl or heteroaryl substituent at the γ- or δ-position undergo rhodium-catalyzed asymmetric hydroboration by pinacolborane to give functionalized chiral secondary benzylic boronic esters in yields up to 86% and enantiomer ratios up to 99 : 1. Compared to minimally-functionalized terminal and 1,1-disubstituted vinyl arenes, there are relatively few reports of efficient catalytic asymmetric hydroboration (CAHB) of more highly functionalized internal alkenes. Phosphonate substrates bearing a variety of common heterocyclic ring systems, including furan, indole, pyrrole and thiophene derivatives, as well as those bearing basic nitrogen substituents (e.g., morpholine and pyrazine) are tolerated, although donor substituents positioned in close proximity of the alkene can influence the course of the reaction. Stereoisomeric (E)- and (Z)-substrates afford the same major enantiomer of the borated product. Deuterium-labelling studies reveal that rapid (Z)- to (E)-alkene isomerization accounts for the observed (E/Z)-stereoconvergence during CAHB. The synthetic utility of the chiral boronic ester products is illustrated by stereospecific C-B bond transformations including stereoretentive electrophile promoted 1,2-B-to-C migrations, stereoinvertive SE2 reactions of boron-ate complexes with electrophiles, and stereoretentive palladium- and rhodium-catalyzed cross-coupling protocols.
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Affiliation(s)
- Suman Chakrabarty
- Department of Chemistry , University of Nebraska-Lincoln , Lincoln , Nebraska 68588-0304 , USA .
| | - Hector Palencia
- Department of Chemistry , University of Nebraska-Kearney , Kearney , Nebraska 68849 , USA
| | - Martha D Morton
- Department of Chemistry , University of Nebraska-Lincoln , Lincoln , Nebraska 68588-0304 , USA . .,Nebraska Center for Integrated Biomolecular Communication (NCIBC) , University of Nebraska-Lincoln , Lincoln , Nebraska 68588-0304 , USA
| | - Ryan O Carr
- Department of Chemistry , University of Nebraska-Lincoln , Lincoln , Nebraska 68588-0304 , USA .
| | - James M Takacs
- Department of Chemistry , University of Nebraska-Lincoln , Lincoln , Nebraska 68588-0304 , USA . .,Nebraska Center for Integrated Biomolecular Communication (NCIBC) , University of Nebraska-Lincoln , Lincoln , Nebraska 68588-0304 , USA
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28
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Han S, Shen X, Kong D, Zi G, Hou G, Zhang J. Cu-Catalyzed Asymmetric Hydroboration of Naphthylallylic Compounds for Enantioselective Synthesis of Chiral Boronates. J Org Chem 2019; 84:4318-4329. [PMID: 30888177 DOI: 10.1021/acs.joc.9b00289] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
A Cu-catalyzed regio- and enantioselective hydroboration of various naphthylallylic compounds affording chiral boronates with high yields and excellent enantioselectivities (up to 96% ee) was presented. The utility of the boronated products is further illustrated by other stereospecific C-B bond transformations to produce amino alcohols and other useful compounds.
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Affiliation(s)
- Suna Han
- Key Laboratory of Radiopharmaceuticals, College of Chemistry , Beijing Normal University , Beijing 100875 , China
| | - Xin Shen
- Key Laboratory of Radiopharmaceuticals, College of Chemistry , Beijing Normal University , Beijing 100875 , China
| | - Duanyang Kong
- Key Laboratory of Radiopharmaceuticals, College of Chemistry , Beijing Normal University , Beijing 100875 , China
| | - Guofu Zi
- Key Laboratory of Radiopharmaceuticals, College of Chemistry , Beijing Normal University , Beijing 100875 , China
| | - Guohua Hou
- Key Laboratory of Radiopharmaceuticals, College of Chemistry , Beijing Normal University , Beijing 100875 , China
| | - Jiaxin Zhang
- Key Laboratory of Radiopharmaceuticals, College of Chemistry , Beijing Normal University , Beijing 100875 , China
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29
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30
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Axial shielding of Pd(II) complexes enables perfect stereoretention in Suzuki-Miyaura cross-coupling of Csp 3 boronic acids. Nat Commun 2019; 10:1263. [PMID: 30894535 PMCID: PMC6427018 DOI: 10.1038/s41467-019-09249-z] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Accepted: 02/20/2019] [Indexed: 11/21/2022] Open
Abstract
Stereocontrolled Csp3 cross-coupling can fundamentally change the types of chemical structures that can be mined for molecular functions. Although considerable progress in achieving the targeted chemical reactivity has been made, controlling stereochemistry in Csp3 cross-coupling remains challenging. Here we report that ligand-based axial shielding of Pd(II) complexes enables Suzuki-Miyaura cross-coupling of unactivated Csp3 boronic acids with perfect stereoretention. This approach leverages key differences in spatial orientation between competing pathways for stereoretentive and stereoinvertive transmetalation of Csp3 boronic acids to Pd(II). We show that axial shielding enables perfectly stereoretentive cross-coupling with a range of unactivated secondary Csp3 boronic acids, as well as the stereocontrolled synthesis of xylarinic acid B and all of its Csp3 stereoisomers. We expect these ligand design principles will broadly enable the continued search for practical and effective methods for stereospecific Csp3 cross-coupling. Despite the progress in C(sp3) cross-coupling reactions, full control over the stereochemistry remains a challenge. Here, the authors show that phosphine-containing axially shielded Pd(II) complexes enable Suzuki-Miyaura cross-couplings of unactivated C(sp3) boronic acids with perfect stereoretention.
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31
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Rubial B, Collins BSL, Bigler R, Aichhorn S, Noble A, Aggarwal VK. Enantiospecific Synthesis of ortho-Substituted 1,1-Diarylalkanes by a 1,2-Metalate Rearrangement/anti-S N 2' Elimination/Rearomatizing Allylic Suzuki-Miyaura Reaction Sequence. Angew Chem Int Ed Engl 2019; 58:1366-1370. [PMID: 30520228 PMCID: PMC6391954 DOI: 10.1002/anie.201811343] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Indexed: 12/12/2022]
Abstract
The one-pot sequential coupling of benzylamines, boronic esters, and aryl iodides has been investigated. In the presence of an N-activator, the boronate complex formed from an ortho-lithiated benzylamine and a boronic ester undergoes stereospecific 1,2-metalate rearrangement/anti-SN 2' elimination to form a dearomatized tertiary boronic ester. Treatment with an aryl iodide under palladium catalysis leads to rearomatizing γ-selective allylic Suzuki-Miyaura cross-coupling to generate 1,1-diarylalkanes. When enantioenriched α-substituted benzylamines are employed, the corresponding 1,1-diarylalkanes are formed with high stereospecificity.
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Affiliation(s)
- Belén Rubial
- School of ChemistryUniversity of BristolCantock's CloseBristolBS8 1TSUK
| | | | - Raphael Bigler
- School of ChemistryUniversity of BristolCantock's CloseBristolBS8 1TSUK
| | - Stefan Aichhorn
- School of ChemistryUniversity of BristolCantock's CloseBristolBS8 1TSUK
| | - Adam Noble
- School of ChemistryUniversity of BristolCantock's CloseBristolBS8 1TSUK
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32
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Hussein AA, Almalki FA, Alqahtani AM, Shityakov S. Computational assessments of diastereoselective [4+2] cycloaddition and 1,3-borotopic shift of a dearomatized tertiary boronic ester intermediate: reactivities explained through transition-state distortion energies. RSC Adv 2019; 9:23148-23155. [PMID: 35514518 PMCID: PMC9067249 DOI: 10.1039/c9ra03820e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Accepted: 07/15/2019] [Indexed: 11/21/2022] Open
Abstract
Interception of a dearomatized tertiary boronic ester, formed through a kinetically and thermodynamically favorable 1,2-metalate rearrangement/anti-SN2′ elimination of an activated ortho-lithiated benzyl amine, in a [4+2] cycloaddition or 1,3-borotopic shift has been investigated by density functional theory (DFT). Although superacitvated “naked” Li+ was found to greatly promote 1,3-borotopic shift, the diastereoselective [4+2] cycloaddition was favored. It was revealed that the factor that controls the diastereoselectivity was the steric bulk provided by the diene, which is in agreement with experimental diastereoselectivity. A comparison of unreactive dienophiles such as maleic anhydride, diethyl maleate, and others with 4-phenyl-3H-1,2,4-triazole-3,5(4H)-dione (PTAD) was found to be in an excellent agreement with the experiments; where their lack of reactivity is attributed to the high deformation energies of the interacting components to achieve the transition state structure which was pronounced with the high energy of LUMO orbitals. Interception of dearomatized tertiary boronic ester in a diastereoselective [4+2] cycloaddition or 1,3-borotopic shift in the presence or absence of “naked” Li+, understanding reactivities by activation/strain model, were evaluated by DFT calculations.![]()
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Affiliation(s)
- Aqeel A. Hussein
- Faculty of Dentistry
- University of Al-Ameed
- Iraq
- Department of Chemistry
- University of Southampton
| | - Faisal A. Almalki
- Department of Pharmaceutical Chemistry
- Faculty of Pharmacy
- Umm Al-Qura University
- Makkah 21955
- Saudi Arabia
| | - Alaa M. Alqahtani
- Department of Pharmaceutical Chemistry
- Faculty of Pharmacy
- Umm Al-Qura University
- Makkah 21955
- Saudi Arabia
| | - Sergey Shityakov
- Department of Anesthesia and Critical Care
- University of Würzburg
- 97080 Würzburg
- Germany
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33
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Šterman A, Sosič I, Gobec S, Časar Z. Synthesis of aminoboronic acid derivatives: an update on recent advances. Org Chem Front 2019. [DOI: 10.1039/c9qo00626e] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Aminoboronic acids and their derivatives are particularly useful as drugs, probes and synthons. Recent developments in their synthesis are highlighted.
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Affiliation(s)
- Andrej Šterman
- University of Ljubljana
- Faculty of Pharmacy
- Chair of Medicinal Chemistry
- SI-1000 Ljubljana
- Slovenia
| | - Izidor Sosič
- University of Ljubljana
- Faculty of Pharmacy
- Chair of Medicinal Chemistry
- SI-1000 Ljubljana
- Slovenia
| | - Stanislav Gobec
- University of Ljubljana
- Faculty of Pharmacy
- Chair of Medicinal Chemistry
- SI-1000 Ljubljana
- Slovenia
| | - Zdenko Časar
- University of Ljubljana
- Faculty of Pharmacy
- Chair of Medicinal Chemistry
- SI-1000 Ljubljana
- Slovenia
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34
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Rubial B, Collins BSL, Bigler R, Aichhorn S, Noble A, Aggarwal VK. Enantiospecific Synthesis of ortho
-Substituted 1,1-Diarylalkanes by a 1,2-Metalate Rearrangement/anti
-S
N
2′ Elimination/Rearomatizing Allylic Suzuki-Miyaura Reaction Sequence. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201811343] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Belén Rubial
- School of Chemistry; University of Bristol; Cantock's Close Bristol BS8 1TS UK
| | | | - Raphael Bigler
- School of Chemistry; University of Bristol; Cantock's Close Bristol BS8 1TS UK
| | - Stefan Aichhorn
- School of Chemistry; University of Bristol; Cantock's Close Bristol BS8 1TS UK
| | - Adam Noble
- School of Chemistry; University of Bristol; Cantock's Close Bristol BS8 1TS UK
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35
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Zhao S, Gensch T, Murray B, Niemeyer ZL, Sigman MS, Biscoe MR. Enantiodivergent Pd-catalyzed C-C bond formation enabled through ligand parameterization. Science 2018; 362:670-674. [PMID: 30237245 PMCID: PMC6613548 DOI: 10.1126/science.aat2299] [Citation(s) in RCA: 107] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Accepted: 09/06/2018] [Indexed: 01/01/2023]
Abstract
Despite the enormous potential for the use of stereospecific cross-coupling reactions to rationally manipulate the three-dimensional structure of organic molecules, the factors that control the transfer of stereochemistry in these reactions remain poorly understood. Here we report a mechanistic and synthetic investigation into the use of enantioenriched alkylboron nucleophiles in stereospecific Pd-catalyzed Suzuki cross-coupling reactions. By developing a suite of molecular descriptors of phosphine ligands, we could apply predictive statistical models to select or design distinct ligands that respectively promoted stereoinvertive and stereoretentive cross-coupling reactions. Stereodefined branched structures were thereby accessed through the predictable manipulation of absolute stereochemistry, and a general model for the mechanism of alkylboron transmetallation was proposed.
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Affiliation(s)
- Shibin Zhao
- Department of Chemistry, The City College of New York, 160 Convent Avenue, New York, NY 10031, USA
- Ph.D. Program in Chemistry, The Graduate Center of the City University of New York, 365 Fifth Avenue, New York, NY 10016, USA
| | - Tobias Gensch
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, UT 84112, USA
| | - Benjamin Murray
- Department of Chemistry, The City College of New York, 160 Convent Avenue, New York, NY 10031, USA
- Ph.D. Program in Chemistry, The Graduate Center of the City University of New York, 365 Fifth Avenue, New York, NY 10016, USA
| | - Zachary L Niemeyer
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, UT 84112, USA
| | - Matthew S Sigman
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, UT 84112, USA.
| | - Mark R Biscoe
- Department of Chemistry, The City College of New York, 160 Convent Avenue, New York, NY 10031, USA.
- Ph.D. Program in Chemistry, The Graduate Center of the City University of New York, 365 Fifth Avenue, New York, NY 10016, USA
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36
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Pound SM, Watson MP. Asymmetric synthesis via stereospecific C-N and C-O bond activation of alkyl amine and alcohol derivatives. Chem Commun (Camb) 2018; 54:12286-12301. [PMID: 30283929 PMCID: PMC6261259 DOI: 10.1039/c8cc07093h] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
This perspective showcases our development of benzylic and allylic amine and alcohol derivatives as electrophiles for stereospecific, nickel-catalyzed cross-coupling reactions, as well as the prior art that inspired our efforts. The success of our effort has relied on the use of benzyl ammonium triflates as electrophiles for cross-couplings via C-N bond activation and benzylic and allylic carboxylates for cross-couplings via C-O bond activation. Our work, along with others' exciting discoveries, has demonstrated the potential of stereospecific, nickel-catalyzed cross-couplings of alkyl electrophiles in asymmetric synthesis, and enables efficient generation of both tertiary and quaternary stereocenters.
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Affiliation(s)
- Sarah M Pound
- Department of Chemistry & Biochemistry, University of Delaware, Newark, Delaware 19716, USA.
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37
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Ganesh V, Noble A, Aggarwal VK. Chiral Aniline Synthesis via Stereospecific C(sp 3)-C(sp 2) Coupling of Boronic Esters with Aryl Hydrazines. Org Lett 2018; 20:6144-6147. [PMID: 30221524 PMCID: PMC6178205 DOI: 10.1021/acs.orglett.8b02615] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
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An enantiospecific
coupling between alkylboronic esters and lithiated
aryl hydrazines is described. The reaction proceeds under transition-metal-free
conditions and is promoted by acylation of a hydrazinyl arylboronate
complex, which triggers a N–N bond cleavage with concomitant
1,2-metalate rearrangement. Judicious choice of the acylating agent
enabled the synthesis of ortho- and para-substituted anilines with essentially complete enantiospecificity
from a wide range of boronic ester substrates.
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Affiliation(s)
- Venkataraman Ganesh
- School of Chemistry , University of Bristol , Cantock's Close , Bristol BS8 1TS , U.K
| | - Adam Noble
- School of Chemistry , University of Bristol , Cantock's Close , Bristol BS8 1TS , U.K
| | - Varinder K Aggarwal
- School of Chemistry , University of Bristol , Cantock's Close , Bristol BS8 1TS , U.K
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38
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Comparing quantitative prediction methods for the discovery of small-molecule chiral catalysts. Nat Rev Chem 2018. [DOI: 10.1038/s41570-018-0040-8] [Citation(s) in RCA: 82] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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39
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Critical view on the recent enantioselective synthesis of alcohols, amines and related molecules having tertiary benzylic stereocenter. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.07.011] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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40
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Chen L, Shen JJ, Gao Q, Xu S. Synthesis of cyclic chiral α-amino boronates by copper-catalyzed asymmetric dearomative borylation of indoles. Chem Sci 2018; 9:5855-5859. [PMID: 30079199 PMCID: PMC6050576 DOI: 10.1039/c8sc01815d] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Accepted: 06/08/2018] [Indexed: 01/19/2023] Open
Abstract
A copper(i)-catalyzed dearomative borylation of N-alkoxycarbonyl protected indole-3-carboxylates has been developed. The boron addition in this reaction occurred regioselectively at the 2-position of indoles followed by diastereoselective protonation, affording the corresponding stable cyclic chiral α-amino boronates (2-borylindolines) in moderate to good yields with excellent diastereo- and enantioselectivities. The product 2c could be used as a versatile precursor to undergo subsequent stereoselective transformations, delivering highly functionalized 2,3,3-trisubstituted chiral indolines.
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Affiliation(s)
- Lili Chen
- State Key Laboratory for Oxo Synthesis and Selective Oxidation , Centre for Excellence in Molecular Synthesis , Suzhou Research Institute , Lanzhou Institute of Chemical Physics , University of Chinese Academy of Sciences , Chinese Academy of Sciences , Lanzhou 730000 , China .
| | - Jun-Jian Shen
- State Key Laboratory for Oxo Synthesis and Selective Oxidation , Centre for Excellence in Molecular Synthesis , Suzhou Research Institute , Lanzhou Institute of Chemical Physics , University of Chinese Academy of Sciences , Chinese Academy of Sciences , Lanzhou 730000 , China .
| | - Qian Gao
- State Key Laboratory for Oxo Synthesis and Selective Oxidation , Centre for Excellence in Molecular Synthesis , Suzhou Research Institute , Lanzhou Institute of Chemical Physics , University of Chinese Academy of Sciences , Chinese Academy of Sciences , Lanzhou 730000 , China .
| | - Senmiao Xu
- State Key Laboratory for Oxo Synthesis and Selective Oxidation , Centre for Excellence in Molecular Synthesis , Suzhou Research Institute , Lanzhou Institute of Chemical Physics , University of Chinese Academy of Sciences , Chinese Academy of Sciences , Lanzhou 730000 , China .
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education , Hangzhou Normal University , Hangzhou 311121 , China
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41
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Jackl MK, Schuhmacher A, Shiro T, Bode JW. Synthesis of N,N-Alkylated α-Tertiary Amines by Coupling of α-Aminoalkyltrifluoroborates and Grignard Reagents. Org Lett 2018; 20:4044-4047. [DOI: 10.1021/acs.orglett.8b01613] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Moritz K. Jackl
- Laboratory of Organic Chemistry, Department of Chemistry and Applied Biosciences, ETH Zurich, 8093 Zurich, Switzerland
| | - Anne Schuhmacher
- Laboratory of Organic Chemistry, Department of Chemistry and Applied Biosciences, ETH Zurich, 8093 Zurich, Switzerland
| | - Tomoya Shiro
- Laboratory of Organic Chemistry, Department of Chemistry and Applied Biosciences, ETH Zurich, 8093 Zurich, Switzerland
| | - Jeffrey W. Bode
- Laboratory of Organic Chemistry, Department of Chemistry and Applied Biosciences, ETH Zurich, 8093 Zurich, Switzerland
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42
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Shiro T, Schuhmacher A, Jackl MK, Bode JW. Facile synthesis of α-aminoboronic acids from amines and potassium acyltrifluoroborates (KATs) via trifluoroborate-iminiums (TIMs). Chem Sci 2018; 9:5191-5196. [PMID: 29997873 PMCID: PMC6000978 DOI: 10.1039/c8sc01486h] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2018] [Accepted: 05/12/2018] [Indexed: 12/26/2022] Open
Abstract
We report the facile formation of trifluoroborate-iminiums (TIMs) from potassium acyltrifluoroborates (KATs) and the transformation of TIMs to α-aminotrifluoroborates by reduction or Grignard additions. Conditions for the hydrolysis of α-aminotrifluoroborates to α-aminoboronic acids, which are important biologically active compounds, were established. This new methodology allows access to sterically demanding α-aminoboronic acids that are not easily prepared with currently available methods. This work also introduces TIMs, that can be easily prepared and handled, as a new category of functional groups that serve as precursors to valuable organic compounds.
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Affiliation(s)
- Tomoya Shiro
- Laboratorium fur Organische Chemie , Department of Chemistry and Applied Biosciences , ETH Zurich , Zürich , Switzerland 8093 . ; http://www.bode.ethz.ch
| | - Anne Schuhmacher
- Laboratorium fur Organische Chemie , Department of Chemistry and Applied Biosciences , ETH Zurich , Zürich , Switzerland 8093 . ; http://www.bode.ethz.ch
| | - Moritz K Jackl
- Laboratorium fur Organische Chemie , Department of Chemistry and Applied Biosciences , ETH Zurich , Zürich , Switzerland 8093 . ; http://www.bode.ethz.ch
| | - Jeffrey W Bode
- Laboratorium fur Organische Chemie , Department of Chemistry and Applied Biosciences , ETH Zurich , Zürich , Switzerland 8093 . ; http://www.bode.ethz.ch
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43
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Ohmura T, Miwa K, Awano T, Suginome M. Enantiospecific Suzuki-Miyaura Coupling of Nonbenzylic α-(Acylamino)alkylboronic Acid Derivatives. Chem Asian J 2018; 13:2414-2417. [PMID: 29733101 DOI: 10.1002/asia.201800536] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Revised: 05/02/2018] [Indexed: 11/10/2022]
Abstract
Suzuki-Miyaura coupling of nonbenzylic α-(acylamino)alkylboron compounds with aryl halides is established. A Pd/PCy2 Ph catalyst promotes the reaction efficiently at 145 °C. The reaction of enantioenriched α-(acylamino)alkylboron compounds affords chiral 1-arylalkylamides in high enantiospecificity and inversion of configuration.
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Affiliation(s)
- Toshimichi Ohmura
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Kyoko Miwa
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Tomotsugu Awano
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Michinori Suginome
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
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44
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Jayaraman A, Misal Castro LC, Desrosiers V, Fontaine FG. Metal-free borylative dearomatization of indoles: exploring the divergent reactivity of aminoborane C-H borylation catalysts. Chem Sci 2018; 9:5057-5063. [PMID: 29938036 PMCID: PMC5994747 DOI: 10.1039/c8sc01093e] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Accepted: 05/05/2018] [Indexed: 11/25/2022] Open
Abstract
We report the first example of catalytic dearomatization of indoles to generate 3-borylindolines using metal-free borane catalysts.
While the dearomatization of indoles by carbon–boron bond forming reactions is new and quite promising, they are so far mainly metal-catalyzed. Here, we establish the use of metal-free catalysts in promoting such reactions in an atom-efficient way. The in situ generated ambiphilic aminoborane catalyst (1-Pip-2-BH2-C6H4)2 (Pip = piperidyl) promotes borylative dearomatization of various 1-arylsulfonyl indoles with pinacolborane in a syn addition fashion, with H and Bpin groups added respectively to the 2 and 3 positions of indoles. Catalysis proceeds with good to excellent conversion and essentially with complete regio- and diastereoselectivity. From mechanistic insights and DFT computations, we realized and established that prototypical boranes can also catalyze this borylative dearomatization.
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Affiliation(s)
- Arumugam Jayaraman
- Département de Chimie , Centre de Catalyse et de Chimie Verte (C3V) , Université Laval , Québec City , Québec , Canada G1V 0A6 .
| | - Luis C Misal Castro
- Département de Chimie , Centre de Catalyse et de Chimie Verte (C3V) , Université Laval , Québec City , Québec , Canada G1V 0A6 .
| | - Vincent Desrosiers
- Département de Chimie , Centre de Catalyse et de Chimie Verte (C3V) , Université Laval , Québec City , Québec , Canada G1V 0A6 .
| | - Frédéric-Georges Fontaine
- Département de Chimie , Centre de Catalyse et de Chimie Verte (C3V) , Université Laval , Québec City , Québec , Canada G1V 0A6 .
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45
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Abstract
Small molecules have extensive untapped potential to benefit society, but access to this potential is too often restricted by limitations inherent to the customized approach currently used to synthesize this class of chemical matter. In contrast, the "building block approach", i.e., generalized iterative assembly of interchangeable parts, has now proven to be a highly efficient and flexible way to construct things ranging all the way from skyscrapers to macromolecules to artificial intelligence algorithms. The structural redundancy found in many small molecules suggests that they possess a similar capacity for generalized building block-based construction. It is also encouraging that many customized iterative synthesis methods have been developed that improve access to specific classes of small molecules. There has also been substantial recent progress toward the iterative assembly of many different types of small molecules, including complex natural products, pharmaceuticals, biological probes, and materials, using common building blocks and coupling chemistry. Collectively, these advances suggest that a generalized building block approach for small molecule synthesis may be within reach.
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Affiliation(s)
- Jonathan W Lehmann
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Daniel J Blair
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Martin D Burke
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- Department of Biochemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA and Carle-Illinois College of Medicine, University of Illinois at Urbana-Champaign, Champaign, IL 61820, USA
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46
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Bigler R, Aggarwal VK. ortho
-Directing Chromium Arene Complexes as Efficient Mediators for Enantiospecific C(sp 2
)-C(sp 3
) Cross-Coupling Reactions. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201711816] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Raphael Bigler
- School of Chemistry; University of Bristol; Cantock's Close Bristol BS8 1TS UK
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47
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Li K, Shao X, Tseng L, Malcolmson SJ. 2-Azadienes as Reagents for Preparing Chiral Amines: Synthesis of 1,2-Amino Tertiary Alcohols by Cu-Catalyzed Enantioselective Reductive Couplings with Ketones. J Am Chem Soc 2018; 140:598-601. [PMID: 29272124 PMCID: PMC5936605 DOI: 10.1021/jacs.7b12213] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
We introduce a new strategy for synthesis of chiral amines: couplings of α-aminoalkyl nucleophiles generated by enantioselective migratory insertion of 2-azadienes to a Cu-H. In this report, we demonstrate its application in catalytic reductive coupling of 2-azadienes and ketones to furnish 1,2-amino tertiary alcohols with vicinal stereogenic centers.
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Affiliation(s)
| | | | - Luke Tseng
- Department of Chemistry, Duke University, Durham, North Carolina 27708, United States
| | - Steven J. Malcolmson
- Department of Chemistry, Duke University, Durham, North Carolina 27708, United States
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48
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Liu F, Zhong J, Zhou Y, Gao Z, Walsh PJ, Wang X, Ma S, Hou S, Liu S, Wang M, Wang M, Bian Q. Cobalt‐Catalyzed Enantioselective Negishi Cross‐Coupling of Racemic α‐Bromo Esters with Arylzincs. Chemistry 2018; 24:2059-2064. [PMID: 29194860 DOI: 10.1002/chem.201705463] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2017] [Indexed: 12/12/2022]
Affiliation(s)
- Feipeng Liu
- Department of Applied Chemistry China Agricultural University 2 West Yuanmingyuan Road Beijing 100193 P. R. China
| | - Jiangchun Zhong
- Department of Applied Chemistry China Agricultural University 2 West Yuanmingyuan Road Beijing 100193 P. R. China
| | - Yun Zhou
- Department of Applied Chemistry China Agricultural University 2 West Yuanmingyuan Road Beijing 100193 P. R. China
| | - Zidong Gao
- Department of Applied Chemistry China Agricultural University 2 West Yuanmingyuan Road Beijing 100193 P. R. China
| | - Patrick J. Walsh
- Department of Chemistry University of Pennsylvania 231 South 34th Street Philadelphia Pennsylvania 19104-6323 USA
| | - Xueyang Wang
- Department of Applied Chemistry China Agricultural University 2 West Yuanmingyuan Road Beijing 100193 P. R. China
| | - Sijie Ma
- Department of Applied Chemistry China Agricultural University 2 West Yuanmingyuan Road Beijing 100193 P. R. China
| | - Shicong Hou
- Department of Applied Chemistry China Agricultural University 2 West Yuanmingyuan Road Beijing 100193 P. R. China
| | - Shangzhong Liu
- Department of Applied Chemistry China Agricultural University 2 West Yuanmingyuan Road Beijing 100193 P. R. China
| | - Minan Wang
- Department of Applied Chemistry China Agricultural University 2 West Yuanmingyuan Road Beijing 100193 P. R. China
| | - Min Wang
- Department of Applied Chemistry China Agricultural University 2 West Yuanmingyuan Road Beijing 100193 P. R. China
| | - Qinghua Bian
- Department of Applied Chemistry China Agricultural University 2 West Yuanmingyuan Road Beijing 100193 P. R. China
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49
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Bigler R, Aggarwal VK. ortho
-Directing Chromium Arene Complexes as Efficient Mediators for Enantiospecific C(sp2
)-C(sp3
) Cross-Coupling Reactions. Angew Chem Int Ed Engl 2018; 57:1082-1086. [DOI: 10.1002/anie.201711816] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2017] [Indexed: 11/08/2022]
Affiliation(s)
- Raphael Bigler
- School of Chemistry; University of Bristol; Cantock's Close Bristol BS8 1TS UK
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50
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Rygus JPG, Crudden CM. Enantiospecific and Iterative Suzuki–Miyaura Cross-Couplings. J Am Chem Soc 2017; 139:18124-18137. [DOI: 10.1021/jacs.7b08326] [Citation(s) in RCA: 125] [Impact Index Per Article: 17.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Jason P. G. Rygus
- Department
of Chemistry, Queen’s University, Chernoff Hall, Kingston, Ontario K7L
3N6, Canada
| | - Cathleen M. Crudden
- Department
of Chemistry, Queen’s University, Chernoff Hall, Kingston, Ontario K7L
3N6, Canada
- Institute
of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Chikusa, Nagoya 464-8601, Japan
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