151
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Huang Q, Michalland J, Zard SZ. Alternating Radical Stabilities: A Convergent Route to Terminal and Internal Boronates. Angew Chem Int Ed Engl 2019; 58:16936-16942. [DOI: 10.1002/anie.201906497] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Indexed: 12/15/2022]
Affiliation(s)
- Qi Huang
- Laboratoire de Synthèse Organique, CNRS UMR 7652Ecole polytechnique Route de Saclay 91128 Palaiseau Cedex France
| | - Jean Michalland
- Laboratoire de Synthèse Organique, CNRS UMR 7652Ecole polytechnique Route de Saclay 91128 Palaiseau Cedex France
| | - Samir Z. Zard
- Laboratoire de Synthèse Organique, CNRS UMR 7652Ecole polytechnique Route de Saclay 91128 Palaiseau Cedex France
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152
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Huang Q, Michalland J, Zard SZ. Alternating Radical Stabilities: A Convergent Route to Terminal and Internal Boronates. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201906497] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Qi Huang
- Laboratoire de Synthèse Organique, CNRS UMR 7652Ecole polytechnique Route de Saclay 91128 Palaiseau Cedex France
| | - Jean Michalland
- Laboratoire de Synthèse Organique, CNRS UMR 7652Ecole polytechnique Route de Saclay 91128 Palaiseau Cedex France
| | - Samir Z. Zard
- Laboratoire de Synthèse Organique, CNRS UMR 7652Ecole polytechnique Route de Saclay 91128 Palaiseau Cedex France
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153
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Wu J, Bär RM, Guo L, Noble A, Aggarwal VK. Photoinduced Deoxygenative Borylations of Aliphatic Alcohols. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201910051] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Jingjing Wu
- School of ChemistryUniversity of Bristol, Cantock's Close Bristol BS8 1TS UK
| | - Robin M. Bär
- School of ChemistryUniversity of Bristol, Cantock's Close Bristol BS8 1TS UK
| | - Lin Guo
- School of ChemistryUniversity of Bristol, Cantock's Close Bristol BS8 1TS UK
| | - Adam Noble
- School of ChemistryUniversity of Bristol, Cantock's Close Bristol BS8 1TS UK
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154
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Malapit CA, Bour JR, Laursen SR, Sanford MS. Mechanism and Scope of Nickel-Catalyzed Decarbonylative Borylation of Carboxylic Acid Fluorides. J Am Chem Soc 2019; 141:17322-17330. [PMID: 31617708 PMCID: PMC11103277 DOI: 10.1021/jacs.9b08961] [Citation(s) in RCA: 80] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
This Article describes the development of a base-free, nickel-catalyzed decarbonylative coupling of carboxylic acid fluorides with diboron reagents to selectively afford aryl boronate ester products. Detailed studies were conducted to assess the relative rates of direct transmetalation between aryl boronate esters and diboron reagents and a bisphosphine nickel(aryl)(fluoride) intermediate. These investigations revealed that diboron reagents undergo transmetalation with this Ni(aryl)(fluoride) intermediate at rates significantly faster than their aryl boronate ester congeners. Furthermore, the reactivity of both boron reagents toward transmetalation is enhanced with increasing electrophilicity of the boron center. These mechanistic insights were leveraged to develop a catalytic decarbonylative borylation of acid fluorides that proved applicable to a variety of (hetero)aryl carboxylic acid fluorides as well as diverse diboron reagents. The acid fluorides can be generated in situ directly from carboxylic acids. Furthermore, the mechanistic studies directed the identification of various air-stable Ni pre-catalysts for this transformation.
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Affiliation(s)
- Christian A. Malapit
- University of Michigan, Department of Chemistry, 930 North University Avenue, Ann Arbor, MI 48109 US
| | - James R. Bour
- University of Michigan, Department of Chemistry, 930 North University Avenue, Ann Arbor, MI 48109 US
| | - Simon R. Laursen
- University of Michigan, Department of Chemistry, 930 North University Avenue, Ann Arbor, MI 48109 US
| | - Melanie S. Sanford
- University of Michigan, Department of Chemistry, 930 North University Avenue, Ann Arbor, MI 48109 US
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155
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Fordham JM, Grayson MN, Aggarwal VK. Vinylidene Homologation of Boronic Esters and its Application to the Synthesis of the Proposed Structure of Machillene. Angew Chem Int Ed Engl 2019; 58:15268-15272. [PMID: 31365776 DOI: 10.1002/anie.201907617] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Revised: 07/30/2019] [Indexed: 01/20/2023]
Abstract
Alkenyl boronic esters are important reagents in organic synthesis. Herein, we report that these valuable products can be accessed by the homologation of boronic esters with lithiated epoxysilanes. Aliphatic and electron-rich aromatic boronic esters provided vinylidene boronic esters in moderate to high yields, while electron-deficient aromatic and vinyl boronic esters were found to give the corresponding vinyl silane products. Through DFT calculations, this divergence in mechanistic pathway has been rationalized by considering the stabilization of negative charge in the C-Si and C-B bond breaking transition states. This vinylidene homologation was used in a short six-step stereoselective synthesis of the proposed structure of machillene, however, synthetic and reported data were found to be inconsistent.
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Affiliation(s)
- James M Fordham
- School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, UK
| | - Matthew N Grayson
- Department of Chemistry, University of Bath, Claverton Down, Bath, BA2 7AY, UK
| | - Varinder K Aggarwal
- School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, UK
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156
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Friese FW, Studer A. New avenues for C-B bond formation via radical intermediates. Chem Sci 2019; 10:8503-8518. [PMID: 32015798 PMCID: PMC6977546 DOI: 10.1039/c9sc03765a] [Citation(s) in RCA: 92] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Accepted: 09/03/2019] [Indexed: 12/26/2022] Open
Abstract
This perspective gives an overview on recent findings in the emerging area of C-radical borylation using diborons as radical trapping reagents. Aryl, vinyl and alkyl boronic esters can be accessed via such an approach under mild conditions. These processes are complementary to established transition metal catalysed cross coupling reactions. Radical borylations can be conducted in the absence of a transition metal but some processes require transition metals as catalysts. It will be shown that various readily available C-radical precursors can be used to run these borylations. For a better understanding of the chemistry, mechanistic discussions are also presented and an outlook on this topic will be provided at the end of the article.
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Affiliation(s)
- Florian W Friese
- Organisch-Chemisches Institut , Westfälische Wilhelms-Universität , Corrensstrasse 40 , 48149 Münster , Germany .
| | - Armido Studer
- Organisch-Chemisches Institut , Westfälische Wilhelms-Universität , Corrensstrasse 40 , 48149 Münster , Germany .
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157
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158
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Neochoritis CG, Zarganes-Tzitzikas T, Novotná M, Mitríková T, Wang Z, Kurpiewska K, Kalinowska-Tłuścik J, Dömling A. Isocyanide-Based Multicomponent Reactions of Free Phenylboronic Acids. EUROPEAN JOURNAL OF CHEMISTRY (PRINT) 2019; 2019:6132-6137. [PMID: 33981465 PMCID: PMC8112803 DOI: 10.1002/ejoc.201901187] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Indexed: 12/14/2022]
Abstract
Boronic acids are amongst the most useful synthetic intermediates, frequently used by modern drug design. However, their access and fast synthesis of libraries are often problematic. We present a methodology on the synthesis of drug-like scaffolds via IMCRs with unprotected phenylboronic acids. To demonstrate an application of our approach, we also performed one-pot Suzuki couplings on the primary MCR scaffolds. Moreover, we performed a thorough data-mining of the Cambridge Structural Database, revealing interesting geometrical features.
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Affiliation(s)
- Constantinos G Neochoritis
- Department of Pharmacy, Drug Design Group, University of Groningen, A. Deusinglaan 1, 9713 AV, The Netherlands
- Department of Chemistry, University of Crete, Panepistimioupoli Vouton, T.K 70013 Iraklio, Crete, Greece
| | - Tryfon Zarganes-Tzitzikas
- Department of Pharmacy, Drug Design Group, University of Groningen, A. Deusinglaan 1, 9713 AV, The Netherlands
| | - Michaela Novotná
- Department of Pharmacy, Drug Design Group, University of Groningen, A. Deusinglaan 1, 9713 AV, The Netherlands
| | - Tatiana Mitríková
- Department of Pharmacy, Drug Design Group, University of Groningen, A. Deusinglaan 1, 9713 AV, The Netherlands
| | - Zefeng Wang
- Department of Pharmacy, Drug Design Group, University of Groningen, A. Deusinglaan 1, 9713 AV, The Netherlands
| | - Katarzyna Kurpiewska
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland
| | | | - Alexander Dömling
- Department of Pharmacy, Drug Design Group, University of Groningen, A. Deusinglaan 1, 9713 AV, The Netherlands
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159
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Hoerrner ME, Baker KM, Basch CH, Bampo EM, Watson MP. Deaminative Arylation of Amino Acid-derived Pyridinium Salts. Org Lett 2019; 21:7356-7360. [PMID: 31464131 PMCID: PMC6894616 DOI: 10.1021/acs.orglett.9b02643] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A Suzuki-Miyaura cross-coupling of α-pyridinium esters and arylboroxines has been developed. Combined with formation of the pyridinium salts from amino acid derivatives, this method enables amino acid derivatives to be efficiently transformed into α-aryl esters and amides. Under the mild conditions, broad functional group tolerance on both the amino acid derivatives and the arylboroxine are observed, including protic functional groups. Mechanistic studies support an alkyl radical intermediate, similar to other cross-couplings of alkylpyridinium salts.
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Affiliation(s)
- Megan E. Hoerrner
- Department of Chemistry & Biochemistry, University of Delaware, Newark, Delaware, 19716, United States
| | | | | | - Earl M. Bampo
- Department of Chemistry & Biochemistry, University of Delaware, Newark, Delaware, 19716, United States
| | - Mary P. Watson
- Department of Chemistry & Biochemistry, University of Delaware, Newark, Delaware, 19716, United States
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160
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Fordham JM, Grayson MN, Aggarwal VK. Vinylidene Homologation of Boronic Esters and its Application to the Synthesis of the Proposed Structure of Machillene. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201907617] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- James M. Fordham
- School of Chemistry University of Bristol Cantock's Close Bristol BS8 1TS UK
| | - Matthew N. Grayson
- Department of Chemistry University of Bath Claverton Down Bath BA2 7AY UK
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161
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Jin Y, Yang H, Wang C. Nickel-Catalyzed Reductive Arylalkylation via a Migratory Insertion/Decarboxylative Cross-Coupling Cascade. Org Lett 2019; 21:7602-7608. [PMID: 31479278 DOI: 10.1021/acs.orglett.9b02870] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Reported is a nickel-catalyzed reductive arylalkylation of unactivated alkenes tethered to aryl iodides with redox active N-hydroxyphthalimide esters as the alkyl source through successful merging of migratory insertion and decarboxylative cross-coupling in a cascade. This new method avoids the use of pregenerated organometallic reagents and thus enables the synthesis of diverse benzene-fused carbo- and heterocyclic compounds with high tolerance of a wide range of functional groups.
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Affiliation(s)
- Youxiang Jin
- Hefei National Laboratory for Physical Science at the Microscale, Department of Chemistry, Center for Excellence in Molecular Synthesis , University of Science and Technology of China , 96 Jinzhai Road , Hefei , Anhui 230026 , P.R. China
| | - Haobo Yang
- School of Chemistry and Chemical Engineering , Shanghai Jiao Tong University , 800 Dongchuan Road , Shanghai 200240 , P.R. China
| | - Chuan Wang
- Hefei National Laboratory for Physical Science at the Microscale, Department of Chemistry, Center for Excellence in Molecular Synthesis , University of Science and Technology of China , 96 Jinzhai Road , Hefei , Anhui 230026 , P.R. China
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162
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Shih BH, Basha RS, Lee CF. Nickel-Catalyzed Cross-Coupling of Aryl Redoxactive Esters with Aryl Zinc Reagents. ACS Catal 2019. [DOI: 10.1021/acscatal.9b02913] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Bo-Hao Shih
- Department of Chemistry, National Chung Hsing University, Taichung 402, Taiwan, R.O.C
| | - R. Sidick Basha
- Department of Chemistry, National Chung Hsing University, Taichung 402, Taiwan, R.O.C
| | - Chin Fa Lee
- Department of Chemistry, National Chung Hsing University, Taichung 402, Taiwan, R.O.C
- Research Center for Sustainable Energy and Nanotechnology (RCSEN), Taichung 402, Taiwan, R.O.C
- Innovation and Development Center of Sustainable Agriculture (IDCSA), Taichung 402, Taiwan, R.O.C
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163
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Echavarren J, Gall MAY, Haertsch A, Leigh DA, Marcos V, Tetlow DJ. Active template rotaxane synthesis through the Ni-catalyzed cross-coupling of alkylzinc reagents with redox-active esters. Chem Sci 2019; 10:7269-7273. [PMID: 31588296 PMCID: PMC6686731 DOI: 10.1039/c9sc02457c] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2019] [Accepted: 06/15/2019] [Indexed: 12/24/2022] Open
Abstract
The synthesis of unsymmetrical axle [2]rotaxanes through a recently developed Ni-catalyzed C(sp3)-C(sp3) cross-coupling of redox-active esters (formed directly from carboxylic acids) and organozinc reagents (derived from alkyl bromides) is reported. The method also furnishes, as a minor product, the symmetrical axle [2]rotaxanes resulting from the homo-coupling of the organozinc half-thread. The rotaxanes are formed in up to 56% yield with the ratio of unsymmetrical rotaxane increasing with the cavity size of the macrocycle. In the absence of the redox-active ester neither rotaxane is formed, even though the homo-coupling rotaxane product does not incorporate the redox-active ester building block. A Ni(iii) intermediate is consistent with these observations, providing support for the previously postulated mechanism of the Ni-catalyzed cross-coupling reaction.
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Affiliation(s)
- Javier Echavarren
- School of Chemistry , University of Manchester , Oxford Road , Manchester , M13 9PL , UK .
| | - Malcolm A Y Gall
- School of Chemistry , University of Manchester , Oxford Road , Manchester , M13 9PL , UK .
| | - Adrian Haertsch
- School of Chemistry , University of Manchester , Oxford Road , Manchester , M13 9PL , UK .
| | - David A Leigh
- School of Chemistry , University of Manchester , Oxford Road , Manchester , M13 9PL , UK .
| | - Vanesa Marcos
- School of Chemistry , University of Manchester , Oxford Road , Manchester , M13 9PL , UK .
| | - Daniel J Tetlow
- School of Chemistry , University of Manchester , Oxford Road , Manchester , M13 9PL , UK .
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164
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Neochoritis CG, Shaabani S, Ahmadianmoghaddam M, Zarganes-Tzitzikas T, Gao L, Novotná M, Mitríková T, Romero AR, Irianti MI, Xu R, Olechno J, Ellson R, Helan V, Kossenjans M, Groves MR, Dömling A. Rapid approach to complex boronic acids. SCIENCE ADVANCES 2019; 5:eaaw4607. [PMID: 31281893 PMCID: PMC6611686 DOI: 10.1126/sciadv.aaw4607] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Accepted: 05/30/2019] [Indexed: 05/28/2023]
Abstract
The compatibility of free boronic acid building blocks in multicomponent reactions to readily create large libraries of diverse and complex small molecules was investigated. Traditionally, boronic acid synthesis is sequential, synthetically demanding, and time-consuming, which leads to high target synthesis times and low coverage of the boronic acid chemical space. We have performed the synthesis of large libraries of boronic acid derivatives based on multiple chemistries and building blocks using acoustic dispensing technology. The synthesis was performed on a nanomole scale with high synthesis success rates. The discovery of a protease inhibitor underscores the usefulness of the approach. Our acoustic dispensing-enabled chemistry paves the way to highly accelerated synthesis and miniaturized reaction scouting, allowing access to unprecedented boronic acid libraries.
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Affiliation(s)
- Constantinos G. Neochoritis
- Pharmacy Department, Drug Design group, University of Groningen, Deusinglaan 1, 9700 AV Groningen, Netherlands
| | - Shabnam Shaabani
- Pharmacy Department, Drug Design group, University of Groningen, Deusinglaan 1, 9700 AV Groningen, Netherlands
| | - Maryam Ahmadianmoghaddam
- Pharmacy Department, Drug Design group, University of Groningen, Deusinglaan 1, 9700 AV Groningen, Netherlands
| | - Tryfon Zarganes-Tzitzikas
- Pharmacy Department, Drug Design group, University of Groningen, Deusinglaan 1, 9700 AV Groningen, Netherlands
| | - Li Gao
- Pharmacy Department, Drug Design group, University of Groningen, Deusinglaan 1, 9700 AV Groningen, Netherlands
| | - Michaela Novotná
- Pharmacy Department, Drug Design group, University of Groningen, Deusinglaan 1, 9700 AV Groningen, Netherlands
| | - Tatiana Mitríková
- Pharmacy Department, Drug Design group, University of Groningen, Deusinglaan 1, 9700 AV Groningen, Netherlands
| | - Atilio Reyes Romero
- Pharmacy Department, Drug Design group, University of Groningen, Deusinglaan 1, 9700 AV Groningen, Netherlands
| | - Marina Ika Irianti
- Pharmacy Department, Drug Design group, University of Groningen, Deusinglaan 1, 9700 AV Groningen, Netherlands
| | - Ruixue Xu
- Pharmacy Department, Drug Design group, University of Groningen, Deusinglaan 1, 9700 AV Groningen, Netherlands
| | - Joe Olechno
- Labcyte Inc., 170 Rose Orchard Way, San Jose, CA 95134, USA
| | - Richard Ellson
- Labcyte Inc., 170 Rose Orchard Way, San Jose, CA 95134, USA
| | - Victoria Helan
- Hit Discovery, Discovery Sciences, IMED Biotech Unit, AstraZeneca, Mölndal, Gothenburg SE-43183, Sweden
| | - Michael Kossenjans
- Hit Discovery, Discovery Sciences, IMED Biotech Unit, AstraZeneca, Mölndal, Gothenburg SE-43183, Sweden
| | - Matthew R. Groves
- Pharmacy Department, Drug Design group, University of Groningen, Deusinglaan 1, 9700 AV Groningen, Netherlands
| | - Alexander Dömling
- Pharmacy Department, Drug Design group, University of Groningen, Deusinglaan 1, 9700 AV Groningen, Netherlands
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165
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Malcolmson SJ, Li K, Shao X. 2-Azadienes as Enamine Umpolung Synthons for the Preparation of Chiral Amines. Synlett 2019; 30:1253-1268. [PMID: 33731976 PMCID: PMC7963344 DOI: 10.1055/s-0037-1611770] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The development of new strategies for the preparation of chiral amines is an important objective in organic synthesis. In this Synpacts, we summarize our approach for catalytically accessing nucleophilic aminoalkyl metal species from 2-azadienes, and its application in generating a number of important but elusive chiral amine scaffolds. Reductive couplings with ketones and imines afford 1,2-amino tertiary alcohols and 1,2-diamines, respectively, whereas fluoroarylations of gem-difluoro-2-azadienes deliver α-trifluoromethylated benzylic amines.
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Affiliation(s)
| | - Kangnan Li
- Department of Chemistry, Duke University, NC 27708, USA
| | - Xinxin Shao
- Department of Chemistry, Duke University, NC 27708, USA
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166
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Clausen F, Kischkewitz M, Bergander K, Studer A. Catalytic protodeboronation of pinacol boronic esters: formal anti-Markovnikov hydromethylation of alkenes. Chem Sci 2019; 10:6210-6214. [PMID: 31360428 PMCID: PMC6585874 DOI: 10.1039/c9sc02067e] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Accepted: 05/15/2019] [Indexed: 01/02/2023] Open
Abstract
Pinacol boronic esters are highly valuable building blocks in organic synthesis. In contrast to the many protocols available on the functionalizing deboronation of alkyl boronic esters, protodeboronation is not well developed. Herein we report catalytic protodeboronation of 1°, 2° and 3° alkyl boronic esters utilizing a radical approach. Paired with a Matteson-CH2-homologation, our protocol allows for formal anti-Markovnikov alkene hydromethylation, a valuable but unknown transformation. The hydromethylation sequence was applied to methoxy protected (-)-Δ8-THC and cholesterol. The protodeboronation was further used in the formal total synthesis of δ-(R)-coniceine and indolizidine 209B.
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Affiliation(s)
- Florian Clausen
- Organisch-Chemisches Institut , Westfälische Wilhelms-Universität , Corrensstraβe 40 , 48149 Münster , Germany .
| | - Marvin Kischkewitz
- Organisch-Chemisches Institut , Westfälische Wilhelms-Universität , Corrensstraβe 40 , 48149 Münster , Germany .
| | - Klaus Bergander
- Organisch-Chemisches Institut , Westfälische Wilhelms-Universität , Corrensstraβe 40 , 48149 Münster , Germany .
| | - Armido Studer
- Organisch-Chemisches Institut , Westfälische Wilhelms-Universität , Corrensstraβe 40 , 48149 Münster , Germany .
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167
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Yu JS, Espinosa M, Noda H, Shibasaki M. Traceless Electrophilic Amination for the Synthesis of Unprotected Cyclic β-Amino Acids. J Am Chem Soc 2019; 141:10530-10537. [PMID: 31188574 DOI: 10.1021/jacs.9b05476] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Electrophilic aminations involve an umpolung of a nitrogen atom, providing an alternate, distinctive synthetic strategy. The recent advent of various designed O-substituted hydroxylamines has significantly advanced this research field. An underappreciated issue is atom economy of the transformations: The necessary activating group on the oxygen atom is left in coproduced waste. Herein, we describe Rh-catalyzed electrophilic amination of substituted isoxazolidin-5-ones for the synthesis of unprotected, cyclic β-amino acids featuring either benzo-fused or spirocyclic scaffolds. Using the cyclic hydroxylamines allows for retaining both nitrogen and oxygen functionalities in the product. The traceless, redox neutral process proceeds on a gram scale with as little as 0.1 mol % catalyst loading. In contrast to related electrophilic aminations in the literature, a series of mechanistic experiments suggests a unique pathway involving spirocyclization, followed by the skeletal rearrangement. The insights provided herein shed light on a nuanced reactivity of the active species, Rh-nitrenoid generated from the activated hydroxylamine, and extend the knowledge on electrophilic aromatic substitutions.
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Affiliation(s)
- Jin-Sheng Yu
- Institute of Microbial Chemistry (BIKAKEN), Tokyo , 3-14-23 Kamiosaki , Shinagawa-ku , Tokyo 141-0021 , Japan
| | - Miguel Espinosa
- Institute of Microbial Chemistry (BIKAKEN), Tokyo , 3-14-23 Kamiosaki , Shinagawa-ku , Tokyo 141-0021 , Japan
| | - Hidetoshi Noda
- Institute of Microbial Chemistry (BIKAKEN), Tokyo , 3-14-23 Kamiosaki , Shinagawa-ku , Tokyo 141-0021 , Japan
| | - Masakatsu Shibasaki
- Institute of Microbial Chemistry (BIKAKEN), Tokyo , 3-14-23 Kamiosaki , Shinagawa-ku , Tokyo 141-0021 , Japan
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168
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169
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Friese FW, Studer A. Deoxygenative Borylation of Secondary and Tertiary Alcohols. Angew Chem Int Ed Engl 2019; 58:9561-9564. [PMID: 31050141 PMCID: PMC6772128 DOI: 10.1002/anie.201904028] [Citation(s) in RCA: 104] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Indexed: 12/31/2022]
Abstract
Two different approaches for the deoxygenative radical borylation of secondary and tertiary alcohols are presented. These transformations either proceed through a metal‐free silyl‐radical‐mediated pathway or utilize visible‐light photoredox catalysis. Readily available xanthates or methyl oxalates are used as radical precursors. The reactions show broad substrate scope and high functional‐group tolerance, and are conducted under mild and practical conditions.
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Affiliation(s)
- Florian W Friese
- Westfälische Wilhelms-Universität, Organisch-Chemisches Institut, Corrensstrasse 40, 48149, Münster, Germany
| | - Armido Studer
- Westfälische Wilhelms-Universität, Organisch-Chemisches Institut, Corrensstrasse 40, 48149, Münster, Germany
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170
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Wang XX, Li L, Gong TJ, Xiao B, Lu X, Fu Y. Vicinal Diboration of Alkyl Bromides via Tandem Catalysis. Org Lett 2019; 21:4298-4302. [DOI: 10.1021/acs.orglett.9b01481] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xiao-Xu Wang
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Key Laboratory of Urban Pollutant Conversion, Anhui Province Key Laboratory of Biomass Clean Energy, iChEM, University of Science and Technology of China, Hefei 230026, China
| | - Lei Li
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Key Laboratory of Urban Pollutant Conversion, Anhui Province Key Laboratory of Biomass Clean Energy, iChEM, University of Science and Technology of China, Hefei 230026, China
| | - Tian-Jun Gong
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Key Laboratory of Urban Pollutant Conversion, Anhui Province Key Laboratory of Biomass Clean Energy, iChEM, University of Science and Technology of China, Hefei 230026, China
| | - Bin Xiao
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Key Laboratory of Urban Pollutant Conversion, Anhui Province Key Laboratory of Biomass Clean Energy, iChEM, University of Science and Technology of China, Hefei 230026, China
| | - Xi Lu
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Key Laboratory of Urban Pollutant Conversion, Anhui Province Key Laboratory of Biomass Clean Energy, iChEM, University of Science and Technology of China, Hefei 230026, China
| | - Yao Fu
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Key Laboratory of Urban Pollutant Conversion, Anhui Province Key Laboratory of Biomass Clean Energy, iChEM, University of Science and Technology of China, Hefei 230026, China
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171
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Wollenburg M, Moock D, Glorius F. Hydrogenation of Borylated Arenes. Angew Chem Int Ed Engl 2019; 58:6549-6553. [DOI: 10.1002/anie.201810714] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Revised: 11/01/2018] [Indexed: 02/04/2023]
Affiliation(s)
- Marco Wollenburg
- Organisch-Chemisches InstitutWestfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Germany
| | - Daniel Moock
- Organisch-Chemisches InstitutWestfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Germany
| | - Frank Glorius
- Organisch-Chemisches InstitutWestfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Germany
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172
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Shang M, Feu KS, Vantourout JC, Barton LM, Osswald HL, Kato N, Gagaring K, McNamara CW, Chen G, Hu L, Ni S, Fernández-Canelas P, Chen M, Merchant RR, Qin T, Schreiber SL, Melillo B, Yu JQ, Baran PS. Modular, stereocontrolled C β-H/C α-C activation of alkyl carboxylic acids. Proc Natl Acad Sci U S A 2019; 116:8721-8727. [PMID: 30996125 PMCID: PMC6500144 DOI: 10.1073/pnas.1903048116] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
The union of two powerful transformations, directed C-H activation and decarboxylative cross-coupling, for the enantioselective synthesis of vicinally functionalized alkyl, carbocyclic, and heterocyclic compounds is described. Starting from simple carboxylic acid building blocks, this modular sequence exploits the residual directing group to access more than 50 scaffolds that would be otherwise extremely difficult to prepare. The tactical use of these two transformations accomplishes a formal vicinal difunctionalization of carbon centers in a way that is modular and thus, amenable to rapid diversity incorporation. A simplification of routes to known preclinical drug candidates is presented along with the rapid diversification of an antimalarial compound series.
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Affiliation(s)
- Ming Shang
- Department of Chemistry, The Scripps Research Institute, La Jolla, CA 92037
| | - Karla S Feu
- Department of Chemistry, The Scripps Research Institute, La Jolla, CA 92037
| | | | - Lisa M Barton
- Department of Chemistry, The Scripps Research Institute, La Jolla, CA 92037
| | - Heather L Osswald
- Department of Chemistry, The Scripps Research Institute, La Jolla, CA 92037
| | - Nobutaka Kato
- Chemical Biology and Therapeutics Science Program, Broad Institute, Cambridge, MA 02142
| | - Kerstin Gagaring
- Biology Department, Calibr at The Scripps Research Institute, La Jolla, CA 92037
| | - Case W McNamara
- Biology Department, Calibr at The Scripps Research Institute, La Jolla, CA 92037
| | - Gang Chen
- Department of Chemistry, The Scripps Research Institute, La Jolla, CA 92037
| | - Liang Hu
- Department of Chemistry, The Scripps Research Institute, La Jolla, CA 92037
| | - Shengyang Ni
- Department of Chemistry, The Scripps Research Institute, La Jolla, CA 92037
| | | | - Miao Chen
- Department of Chemistry, The Scripps Research Institute, La Jolla, CA 92037
| | - Rohan R Merchant
- Department of Chemistry, The Scripps Research Institute, La Jolla, CA 92037
| | - Tian Qin
- Department of Chemistry, The Scripps Research Institute, La Jolla, CA 92037
| | - Stuart L Schreiber
- Chemical Biology and Therapeutics Science Program, Broad Institute, Cambridge, MA 02142
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138
| | - Bruno Melillo
- Department of Chemistry, The Scripps Research Institute, La Jolla, CA 92037;
- Chemical Biology and Therapeutics Science Program, Broad Institute, Cambridge, MA 02142
| | - Jin-Quan Yu
- Department of Chemistry, The Scripps Research Institute, La Jolla, CA 92037;
| | - Phil S Baran
- Department of Chemistry, The Scripps Research Institute, La Jolla, CA 92037;
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173
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Tian ZX, Qiao JB, Xu GL, Pang X, Qi L, Ma WY, Zhao ZZ, Duan J, Du YF, Su P, Liu XY, Shu XZ. Highly Enantioselective Cross-Electrophile Aryl-Alkenylation of Unactivated Alkenes. J Am Chem Soc 2019; 141:7637-7643. [PMID: 31002758 DOI: 10.1021/jacs.9b03863] [Citation(s) in RCA: 147] [Impact Index Per Article: 29.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Enantioselective cross-electrophile reactions remain a challenging subject in metal catalysis, and with respect to data, studies have mainly focused on stereoconvergent reactions of racemic alkyl electrophiles. Here, we report an enantioselective cross-electrophile aryl-alkenylation reaction of unactivated alkenes. This method provides access to a number of biologically important chiral molecules such as dihydrobenzofurans, indolines, and indanes. The incorporated alkenyl group is suitable for further reactions that can lead to an increase in molecular diversity and complexity. The reaction proceeds under mild conditions at room temperature, and an easily accessible chiral pyrox ligand is used to afford products with high enantioselectivity. The synthetic utility of this method is demonstrated by enabling the modification of complex molecules such as peptides, indometacin, and steroids.
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Affiliation(s)
- Zhi-Xiong Tian
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), College of Chemistry and Chemical Engineering , Lanzhou University , 222 South Tianshui Road , Lanzhou 730000 , China
| | - Jin-Bao Qiao
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), College of Chemistry and Chemical Engineering , Lanzhou University , 222 South Tianshui Road , Lanzhou 730000 , China
| | - Guang-Li Xu
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), College of Chemistry and Chemical Engineering , Lanzhou University , 222 South Tianshui Road , Lanzhou 730000 , China
| | - Xiaobo Pang
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), College of Chemistry and Chemical Engineering , Lanzhou University , 222 South Tianshui Road , Lanzhou 730000 , China
| | - Liangliang Qi
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), College of Chemistry and Chemical Engineering , Lanzhou University , 222 South Tianshui Road , Lanzhou 730000 , China
| | - Wei-Yuan Ma
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), College of Chemistry and Chemical Engineering , Lanzhou University , 222 South Tianshui Road , Lanzhou 730000 , China
| | - Zhen-Zhen Zhao
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), College of Chemistry and Chemical Engineering , Lanzhou University , 222 South Tianshui Road , Lanzhou 730000 , China
| | - Jicheng Duan
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), College of Chemistry and Chemical Engineering , Lanzhou University , 222 South Tianshui Road , Lanzhou 730000 , China
| | - Yun-Fei Du
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), College of Chemistry and Chemical Engineering , Lanzhou University , 222 South Tianshui Road , Lanzhou 730000 , China
| | - Peifeng Su
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), College of Chemistry and Chemical Engineering , Lanzhou University , 222 South Tianshui Road , Lanzhou 730000 , China
| | - Xue-Yuan Liu
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), College of Chemistry and Chemical Engineering , Lanzhou University , 222 South Tianshui Road , Lanzhou 730000 , China
| | - Xing-Zhong Shu
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), College of Chemistry and Chemical Engineering , Lanzhou University , 222 South Tianshui Road , Lanzhou 730000 , China
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174
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Fu Z, Jiang Y, Wang S, Song Y, Guo S, Cai H. Pd-Catalyzed Decarboxylative Ortho-Halogenation of Aryl Carboxylic Acids with Sodium Halide NaX Using Carboxyl as a Traceless Directing Group. Org Lett 2019; 21:3003-3007. [DOI: 10.1021/acs.orglett.9b00460] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Zhengjiang Fu
- College of Chemistry, Nanchang University, Nanchang, Jiangxi 330031, China
| | - Yongqing Jiang
- College of Chemistry, Nanchang University, Nanchang, Jiangxi 330031, China
| | - Shuiliang Wang
- College of Chemistry, Nanchang University, Nanchang, Jiangxi 330031, China
| | - Yuanyuan Song
- College of Chemistry, Nanchang University, Nanchang, Jiangxi 330031, China
| | - Shengmei Guo
- College of Chemistry, Nanchang University, Nanchang, Jiangxi 330031, China
| | - Hu Cai
- College of Chemistry, Nanchang University, Nanchang, Jiangxi 330031, China
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175
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Hinkes SPA, Klein CDP. Virtues of Volatility: A Facile Transesterification Approach to Boronic Acids. Org Lett 2019; 21:3048-3052. [PMID: 31012586 DOI: 10.1021/acs.orglett.9b00584] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Boronic acids are an increasingly important compound class for many applications, including C-C bond formation reactions, medicinal chemistry, and diagnostics. The deprotection of boronic ester intermediates is frequently a problematic and inefficient step in boronic acid syntheses. We describe an approach that highly facilitates this transformation by leveraging the volatility of methylboronic acid and its diol esters. The method is performed under mild conditions, provides high yields, and eliminates cumbersome and problematic purification steps.
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Affiliation(s)
- Stefan P A Hinkes
- Institute of Pharmacy and Molecular Biotechnology (IPMB), Medicinal Chemistry , University of Heidelberg , Im Neuenheimer Feld 364 , 69120 Heidelberg , Germany
| | - Christian D P Klein
- Institute of Pharmacy and Molecular Biotechnology (IPMB), Medicinal Chemistry , University of Heidelberg , Im Neuenheimer Feld 364 , 69120 Heidelberg , Germany
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176
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Montesinos‐Magraner M, Costantini M, Ramírez‐Contreras R, Muratore ME, Johansson MJ, Mendoza A. General Cyclopropane Assembly by Enantioselective Transfer of a Redox‐Active Carbene to Aliphatic Olefins. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201814123] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
| | - Matteo Costantini
- Dept. of Organic ChemistryStockholm University, Arrhenius Laboratory 10691 Stockholm Sweden
| | | | - Michael E. Muratore
- Cardiovascular, Renal and Metabolism IMED Biotech UnitAstraZeneca Gothenburg 43183 Mölndal Sweden
| | - Magnus J. Johansson
- Cardiovascular, Renal and Metabolism IMED Biotech UnitAstraZeneca Gothenburg 43183 Mölndal Sweden
| | - Abraham Mendoza
- Dept. of Organic ChemistryStockholm University, Arrhenius Laboratory 10691 Stockholm Sweden
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177
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Kinney RG, Arndtsen BA. Decarboxylation with Carbon Monoxide: The Direct Conversion of Carboxylic Acids into Potent Acid Triflate Electrophiles. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201814660] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- R. Garrison Kinney
- Department of ChemistryMcGill University 801 Sherbrooke Street West Montreal QC H3A 0B8 Canada
| | - Bruce A. Arndtsen
- Department of ChemistryMcGill University 801 Sherbrooke Street West Montreal QC H3A 0B8 Canada
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178
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Kinney RG, Arndtsen BA. Decarboxylation with Carbon Monoxide: The Direct Conversion of Carboxylic Acids into Potent Acid Triflate Electrophiles. Angew Chem Int Ed Engl 2019; 58:5085-5089. [PMID: 30776306 DOI: 10.1002/anie.201814660] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2018] [Revised: 02/13/2019] [Indexed: 01/07/2023]
Abstract
We report a new strategy for the conversion of carboxylic acids into potent acid triflate electrophiles. The reaction involves oxidative carbonylation of carboxylic acids with I2 in the presence of AgOTf, and is postulated to proceed via acyl hypoiodites that react with CO to form acid triflates. Coupling this chemistry with subsequent trapping with arenes offers a mild, room temperature approach to generate ketones directly from broadly available carboxylic acids without the use of corrosive and reactive Lewis or Bronsted acid additives, and instead from compounds that are readily available, stable, and functional group compatible.
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Affiliation(s)
- R Garrison Kinney
- Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montreal, QC, H3A 0B8, Canada
| | - Bruce A Arndtsen
- Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montreal, QC, H3A 0B8, Canada
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179
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Shi S, Szostak M. Decarbonylative Borylation of Amides by Palladium Catalysis. ACS OMEGA 2019; 4:4901-4907. [PMID: 31459674 PMCID: PMC6647946 DOI: 10.1021/acsomega.9b00081] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Accepted: 02/18/2019] [Indexed: 06/10/2023]
Abstract
The development of transition-metal-catalyzed borylation reactions is of significant importance for the fields of organic synthesis and medicinal chemistry because of the versatility of organoboron functional groups. Herein, we report the direct decarbonylative borylation of amides by highly selective carbon-nitrogen bond cleavage by palladium catalysis. The approach capitalizes on the ground-state destabilization of the amide bond in N-acyl glutarimides to achieve Pd-catalyzed insertion into the amide N-C bond and decarbonylation (deamidation). Mechanistic studies and the utility of this methodology in orthogonal sequential cross-couplings of robust, bench-stable amides are reported.
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180
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Seihara T, Sakurai S, Kato T, Sakamoto R, Maruoka K. Synthesis of Functionalized Organoboron/Silicon Compounds by Copper-Catalyzed Coupling of Alkylsilyl Peroxides and Diboron/Silylborane Reagents. Org Lett 2019; 21:2477-2481. [DOI: 10.1021/acs.orglett.9b00874] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Takumi Seihara
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo, Kyoto 606-8502, Japan
| | - Shunya Sakurai
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo, Kyoto 606-8502, Japan
| | - Terumasa Kato
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo, Kyoto 606-8502, Japan
| | - Ryu Sakamoto
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo, Kyoto 606-8502, Japan
| | - Keiji Maruoka
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo, Kyoto 606-8502, Japan
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China
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181
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Dai GL, Lai SZ, Luo Z, Tang ZY. Selective Syntheses of Z-Alkenes via Photocatalyzed Decarboxylative Coupling of N-Hydroxyphthalimide Esters with Terminal Arylalkynes. Org Lett 2019; 21:2269-2272. [DOI: 10.1021/acs.orglett.9b00558] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Guo-Li Dai
- Department of Pharmaceutical Engineering, College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China
| | - Shu-Zhen Lai
- Department of Pharmaceutical Engineering, College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China
| | - Zhuangzhu Luo
- School of Chemical Engineering and Technology, Sun Yat-Sen University, Zhuhai 519082, China
| | - Zhen-Yu Tang
- School of Chemical Engineering and Technology, Sun Yat-Sen University, Zhuhai 519082, China
- Department of Pharmaceutical Engineering, College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China
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182
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Wang Z, Guo CY, Yang C, Chen JP. Ag-Catalyzed Chemoselective Decarboxylative Mono- and gem-Difluorination of Malonic Acid Derivatives. J Am Chem Soc 2019; 141:5617-5622. [DOI: 10.1021/jacs.9b00681] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zhen Wang
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Cong-Ying Guo
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Cheng Yang
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Jian-Ping Chen
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
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183
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Chen TG, Zhang H, Mykhailiuk PK, Merchant RR, Smith CA, Qin T, Baran PS. Quaternary Centers by Nickel-Catalyzed Cross-Coupling of Tertiary Carboxylic Acids and (Hetero)Aryl Zinc Reagents. Angew Chem Int Ed Engl 2019; 58:2454-2458. [PMID: 30623547 PMCID: PMC6391118 DOI: 10.1002/anie.201814524] [Citation(s) in RCA: 68] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Indexed: 01/07/2023]
Abstract
This work bridges a gap in the cross-coupling of aliphatic redox-active esters with aryl zinc reagents. Previously limited to primary, secondary, and specialized tertiary centers, a new protocol has been devised to enable the coupling of general tertiary systems using nickel catalysis. The scope of this operationally simple method is broad, and it can be used to simplify the synthesis of medicinally relevant motifs bearing quaternary centers.
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Affiliation(s)
- Tie-Gen Chen
- Department of Chemistry, Scripps Research, North Torrey Pines Road, La Jolla, CA, 92037, USA
| | - Haolin Zhang
- Department of Chemistry, Scripps Research, North Torrey Pines Road, La Jolla, CA, 92037, USA
| | - Pavel K Mykhailiuk
- Department of Chemistry, Scripps Research, North Torrey Pines Road, La Jolla, CA, 92037, USA
- Enamine Ltd., Chervonotkatska 78, 02094, Kyiv, Ukraine
- Taras Shevchenko National University of Kyiv, Chemistry Department, Volodymyrska 64, 01601, Kyiv, Ukraine
| | - Rohan R Merchant
- Department of Chemistry, Scripps Research, North Torrey Pines Road, La Jolla, CA, 92037, USA
| | - Courtney A Smith
- Department of Chemistry, Scripps Research, North Torrey Pines Road, La Jolla, CA, 92037, USA
| | - Tian Qin
- Department of Chemistry, Scripps Research, North Torrey Pines Road, La Jolla, CA, 92037, USA
| | - Phil S Baran
- Department of Chemistry, Scripps Research, North Torrey Pines Road, La Jolla, CA, 92037, USA
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184
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Montesinos-Magraner M, Costantini M, Ramírez-Contreras R, Muratore ME, Johansson MJ, Mendoza A. General Cyclopropane Assembly by Enantioselective Transfer of a Redox-Active Carbene to Aliphatic Olefins. Angew Chem Int Ed Engl 2019; 58:5930-5935. [PMID: 30675970 DOI: 10.1002/anie.201814123] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Indexed: 12/30/2022]
Abstract
Asymmetric cyclopropane synthesis currently requires bespoke strategies, methods, substrates, and reagents, even when targeting similar compounds. This approach slows down discovery and limits available chemical space. Introduced herein is a practical and versatile diazocompound and its performance in the first unified asymmetric synthesis of functionalized cyclopropanes. The redox-active leaving group in this reagent enhances the reactivity and selectivity of geminal carbene transfer. This effect allowed the asymmetric cyclopropanation of various olefins, including unfunctionalized aliphatic alkenes, that enables the three-step total synthesis of (-)-dictyopterene A. This unified synthetic approach delivers high enantioselectivities that are independent of the stereoelectronic properties of the functional groups transferred. Our results demonstrate that orthogonally differentiated diazocompounds are viable and advantageous equivalents of single-carbon chirons.
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Affiliation(s)
- Marc Montesinos-Magraner
- Dept. of Organic Chemistry, Stockholm University, Arrhenius Laboratory, 10691, Stockholm, Sweden
| | - Matteo Costantini
- Dept. of Organic Chemistry, Stockholm University, Arrhenius Laboratory, 10691, Stockholm, Sweden
| | | | - Michael E Muratore
- Cardiovascular, Renal and Metabolism IMED Biotech Unit, AstraZeneca Gothenburg, 43183, Mölndal, Sweden
| | - Magnus J Johansson
- Cardiovascular, Renal and Metabolism IMED Biotech Unit, AstraZeneca Gothenburg, 43183, Mölndal, Sweden
| | - Abraham Mendoza
- Dept. of Organic Chemistry, Stockholm University, Arrhenius Laboratory, 10691, Stockholm, Sweden
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185
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Rahman M, Mukherjee A, Kovalev IS, Kopchuk DS, Zyryanov GV, Tsurkan MV, Majee A, Ranu BC, Charushin VN, Chupakhin ON, Santra S. Recent Advances on Diverse Decarboxylative Reactions of Amino Acids. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201801331] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Matiur Rahman
- Department of Organic & Biomolecular Chemistry, Chemical Engineering InstituteUral Federal University 19 Mira Str. 620002 Yekaterinburg Russian Federation
| | - Anindita Mukherjee
- Department of Organic & Biomolecular Chemistry, Chemical Engineering InstituteUral Federal University 19 Mira Str. 620002 Yekaterinburg Russian Federation
| | - Igor S. Kovalev
- Department of Organic & Biomolecular Chemistry, Chemical Engineering InstituteUral Federal University 19 Mira Str. 620002 Yekaterinburg Russian Federation
| | - Dmitry S. Kopchuk
- Department of Organic & Biomolecular Chemistry, Chemical Engineering InstituteUral Federal University 19 Mira Str. 620002 Yekaterinburg Russian Federation
- I. Ya. Postovskiy Institute of Organic SynthesisUral Division of the Russian Academy of Sciences 22 S. Kovalevskoy Str. Yekaterinburg 620219 Russian Federation
| | - Grigory V. Zyryanov
- Department of Organic & Biomolecular Chemistry, Chemical Engineering InstituteUral Federal University 19 Mira Str. 620002 Yekaterinburg Russian Federation
- I. Ya. Postovskiy Institute of Organic SynthesisUral Division of the Russian Academy of Sciences 22 S. Kovalevskoy Str. Yekaterinburg 620219 Russian Federation
| | - Mikhail V. Tsurkan
- Max Bergmann Center of BiomaterialsLeibniz Institute of Polymer Research Hohe Strasse 6 01069 Dresden Germany
| | - Adinath Majee
- Department of ChemistryVisva-Bharati (A Central University) Santiniketan 731235 India
| | - Brindaban C. Ranu
- Department of Organic ChemistryIndian Association for the Cultivation of Science, Jadavpur Kolkata 700032 India
| | - Valery N. Charushin
- Department of Organic & Biomolecular Chemistry, Chemical Engineering InstituteUral Federal University 19 Mira Str. 620002 Yekaterinburg Russian Federation
- I. Ya. Postovskiy Institute of Organic SynthesisUral Division of the Russian Academy of Sciences 22 S. Kovalevskoy Str. Yekaterinburg 620219 Russian Federation
| | - Oleg N. Chupakhin
- Department of Organic & Biomolecular Chemistry, Chemical Engineering InstituteUral Federal University 19 Mira Str. 620002 Yekaterinburg Russian Federation
- I. Ya. Postovskiy Institute of Organic SynthesisUral Division of the Russian Academy of Sciences 22 S. Kovalevskoy Str. Yekaterinburg 620219 Russian Federation
| | - Sougata Santra
- Department of Organic & Biomolecular Chemistry, Chemical Engineering InstituteUral Federal University 19 Mira Str. 620002 Yekaterinburg Russian Federation
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186
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Nguyen VD, Nguyen VT, Jin S, Dang HT, Larionov OV. Organoboron chemistry comes to light: recent advances in photoinduced synthetic approaches to organoboron compounds. Tetrahedron 2019; 75:584-602. [PMID: 31564756 PMCID: PMC6764765 DOI: 10.1016/j.tet.2018.12.040] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Photoinduced synthetic approaches to organoboron compounds have attracted significant attention in the recent years. Photochemical activation of organic molecules enables generation of reactive intermediates from a variety of precursors, resulting in borylation methods with improved and broader substrate scopes. The review summarizes recent developments in the area of photoinduced reactions of organoboron compounds with an emphasis on borylation of haloarenes, amine derivatives, and redox-active esters of carboxylic acids, as well as photoinduced rearrangements of organoboron compounds and photoinduced synthesis of organoboron compounds from alkenes and alkynes.
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Affiliation(s)
- Viet D Nguyen
- Department of Chemistry, The University of Texas at San Antonio, San Antonio, TX 78249, USA
| | - Vu T Nguyen
- Department of Chemistry, The University of Texas at San Antonio, San Antonio, TX 78249, USA
| | - Shengfei Jin
- Department of Chemistry, The University of Texas at San Antonio, San Antonio, TX 78249, USA
| | - Hang T Dang
- Department of Chemistry, The University of Texas at San Antonio, San Antonio, TX 78249, USA
| | - Oleg V Larionov
- Department of Chemistry, The University of Texas at San Antonio, San Antonio, TX 78249, USA
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187
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Chen TG, Zhang H, Mykhailiuk PK, Merchant RR, Smith CA, Qin T, Baran PS. Quaternary Centers by Nickel-Catalyzed Cross-Coupling of Tertiary Carboxylic Acids and (Hetero)Aryl Zinc Reagents. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201814524] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Tie-Gen Chen
- Department of Chemistry; Scripps Research; North Torrey Pines Road La Jolla CA 92037 USA
| | - Haolin Zhang
- Department of Chemistry; Scripps Research; North Torrey Pines Road La Jolla CA 92037 USA
| | - Pavel K. Mykhailiuk
- Department of Chemistry; Scripps Research; North Torrey Pines Road La Jolla CA 92037 USA
- Enamine Ltd.; Chervonotkatska 78 02094 Kyiv Ukraine
- Taras Shevchenko National University of Kyiv; Chemistry Department; Volodymyrska 64 01601 Kyiv Ukraine
| | - Rohan R. Merchant
- Department of Chemistry; Scripps Research; North Torrey Pines Road La Jolla CA 92037 USA
| | - Courtney A. Smith
- Department of Chemistry; Scripps Research; North Torrey Pines Road La Jolla CA 92037 USA
| | - Tian Qin
- Department of Chemistry; Scripps Research; North Torrey Pines Road La Jolla CA 92037 USA
| | - Phil S. Baran
- Department of Chemistry; Scripps Research; North Torrey Pines Road La Jolla CA 92037 USA
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188
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Lu X, Wang XX, Gong TJ, Pi JJ, He SJ, Fu Y. Nickel-catalyzed allylic defluorinative alkylation of trifluoromethyl alkenes with reductive decarboxylation of redox-active esters. Chem Sci 2019; 10:809-814. [PMID: 30774875 PMCID: PMC6345349 DOI: 10.1039/c8sc04335c] [Citation(s) in RCA: 137] [Impact Index Per Article: 27.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2018] [Accepted: 10/29/2018] [Indexed: 12/23/2022] Open
Abstract
Herein, we report a nickel-catalyzed allylic defluorinative alkylation of trifluoromethyl alkenes through reductive decarboxylation of redox-active esters. The present reaction enables the preparation of functionalized gem-difluoroalkenes with the formation of sterically hindered C(sp3)-C(sp3) bonds under very mild reaction conditions, while tolerating many sensitive functional groups and requiring minimal substrate protection. Therefore, this method provides an efficient and convenient approach for late-stage modification of biologically interesting molecules.
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Affiliation(s)
- Xi Lu
- Hefei National Laboratory for Physical Sciences at the Microscale , CAS Key Laboratory of Urban Pollutant Conversion , Anhui Province Key Laboratory of Biomass Clean Energy , iChEM , University of Science and Technology of China , Hefei 230026 , China . ;
| | - Xiao-Xu Wang
- Hefei National Laboratory for Physical Sciences at the Microscale , CAS Key Laboratory of Urban Pollutant Conversion , Anhui Province Key Laboratory of Biomass Clean Energy , iChEM , University of Science and Technology of China , Hefei 230026 , China . ;
| | - Tian-Jun Gong
- Hefei National Laboratory for Physical Sciences at the Microscale , CAS Key Laboratory of Urban Pollutant Conversion , Anhui Province Key Laboratory of Biomass Clean Energy , iChEM , University of Science and Technology of China , Hefei 230026 , China . ;
| | - Jing-Jing Pi
- Hefei National Laboratory for Physical Sciences at the Microscale , CAS Key Laboratory of Urban Pollutant Conversion , Anhui Province Key Laboratory of Biomass Clean Energy , iChEM , University of Science and Technology of China , Hefei 230026 , China . ;
| | - Shi-Jiang He
- Hefei National Laboratory for Physical Sciences at the Microscale , CAS Key Laboratory of Urban Pollutant Conversion , Anhui Province Key Laboratory of Biomass Clean Energy , iChEM , University of Science and Technology of China , Hefei 230026 , China . ;
| | - Yao Fu
- Hefei National Laboratory for Physical Sciences at the Microscale , CAS Key Laboratory of Urban Pollutant Conversion , Anhui Province Key Laboratory of Biomass Clean Energy , iChEM , University of Science and Technology of China , Hefei 230026 , China . ;
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189
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Locke GM, Bernhard SSR, Senge MO. Nonconjugated Hydrocarbons as Rigid-Linear Motifs: Isosteres for Material Sciences and Bioorganic and Medicinal Chemistry. Chemistry 2019; 25:4590-4647. [PMID: 30387906 DOI: 10.1002/chem.201804225] [Citation(s) in RCA: 122] [Impact Index Per Article: 24.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2018] [Revised: 10/20/2018] [Indexed: 01/02/2023]
Abstract
Nonconjugated hydrocarbons, like bicyclo[1.1.1]pentane, bicyclo[2.2.2]octane, triptycene, and cubane are a unique class of rigid linkers. Due to their similarity in size and shape they are useful mimics of classic benzene moieties in drugs, so-called bioisosteres. Moreover, they also fulfill an important role in material sciences as linear linkers, in order to arrange various functionalities in a defined spatial manner. In this Review article, recent developments and usages of these special, rectilinear systems are discussed. Furthermore, we focus on covalently linked, nonconjugated linear arrangements and discuss the physical and chemical properties and differences of individual linkers, as well as their application in material and medicinal sciences.
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Affiliation(s)
- Gemma M Locke
- School of Chemistry, SFI Tetrapyrrole Laboratory, Trinity Biomedical Sciences Institute, Trinity College Dublin, The University of Dublin, 152-160 Pearse Street, Dublin, 2, Ireland
| | - Stefan S R Bernhard
- School of Chemistry, SFI Tetrapyrrole Laboratory, Trinity Biomedical Sciences Institute, Trinity College Dublin, The University of Dublin, 152-160 Pearse Street, Dublin, 2, Ireland
| | - Mathias O Senge
- School of Chemistry, SFI Tetrapyrrole Laboratory, Trinity Biomedical Sciences Institute, Trinity College Dublin, The University of Dublin, 152-160 Pearse Street, Dublin, 2, Ireland
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190
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Lu XY, Li JS, Wang SQ, Zhu YJ, Li YM, Yan LY, Li JM, Wang JY, Zhou HP, Ge XT. Pd-Catalyzed decarboxylative cross-coupling reactions of epoxides with α,β-unsaturated carboxylic acids. Chem Commun (Camb) 2019; 55:11123-11126. [DOI: 10.1039/c9cc04795f] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
A Pd-catalyzed decarboxylative cross-coupling of α,β-unsaturated carboxylic acids with cyclic and acyclic epoxides has been developed.
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Affiliation(s)
- Xiao-Yu Lu
- School of Materials and Chemical Engineering
- ChuZhou University
- Chu Zhou
- China
- School of Chemistry and Chemical Engineering
| | - Jin-Song Li
- School of Materials and Chemical Engineering
- ChuZhou University
- Chu Zhou
- China
| | - Shi-Qun Wang
- School of Materials and Chemical Engineering
- ChuZhou University
- Chu Zhou
- China
| | - Yu-Jing Zhu
- School of Materials and Chemical Engineering
- ChuZhou University
- Chu Zhou
- China
| | - Yue-Ming Li
- School of Materials and Chemical Engineering
- ChuZhou University
- Chu Zhou
- China
| | - Lu-Yu Yan
- School of Materials and Chemical Engineering
- ChuZhou University
- Chu Zhou
- China
| | - Jia-Mei Li
- School of Materials and Chemical Engineering
- ChuZhou University
- Chu Zhou
- China
| | - Jin-Yu Wang
- School of Materials and Chemical Engineering
- ChuZhou University
- Chu Zhou
- China
| | - Hai-Pin Zhou
- School of Materials and Chemical Engineering
- ChuZhou University
- Chu Zhou
- China
| | - Xiu-Tao Ge
- School of Materials and Chemical Engineering
- ChuZhou University
- Chu Zhou
- China
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191
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He Z, Hu Y, Xia C, Liu C. Recent advances in the borylative transformation of carbonyl and carboxyl compounds. Org Biomol Chem 2019; 17:6099-6113. [DOI: 10.1039/c9ob01029g] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The recent advances in the borylative transformation of carbonyl and carboxyl compounds are summarized.
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Affiliation(s)
- Zeyu He
- State Key Laboratory for Oxo Synthesis and Selective Oxidation
- Suzhou Research Institute of LICP
- Lanzhou Institute of Chemical Physics (LICP)
- Chinese Academy of Sciences
- Lanzhou 730000
| | - Yue Hu
- State Key Laboratory for Oxo Synthesis and Selective Oxidation
- Suzhou Research Institute of LICP
- Lanzhou Institute of Chemical Physics (LICP)
- Chinese Academy of Sciences
- Lanzhou 730000
| | - Chungu Xia
- State Key Laboratory for Oxo Synthesis and Selective Oxidation
- Suzhou Research Institute of LICP
- Lanzhou Institute of Chemical Physics (LICP)
- Chinese Academy of Sciences
- Lanzhou 730000
| | - Chao Liu
- State Key Laboratory for Oxo Synthesis and Selective Oxidation
- Suzhou Research Institute of LICP
- Lanzhou Institute of Chemical Physics (LICP)
- Chinese Academy of Sciences
- Lanzhou 730000
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192
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Anand D, He Y, Li L, Zhou L. A photocatalytic sp3 C–S, C–Se and C–B bond formation through C–C bond cleavage of cycloketone oxime esters. Org Biomol Chem 2019; 17:533-540. [DOI: 10.1039/c8ob02987c] [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
The photocatalytic sulfuration, selenylation and borylation of cycloketone oxime esters through iminyl radical-triggered C–C bond cleavage were described. The reactions provide a unified approach to alkyl sulfur, selenium and boron compounds tethered to a synthetically useful nitrile group.
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Affiliation(s)
- Devireddy Anand
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- China
| | - Yuwei He
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- China
| | - Linyong Li
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- China
| | - Lei Zhou
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- China
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193
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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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194
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Yang JC, Chen L, Yang F, Li P, Guo LN. Copper-catalyzed borylation of cycloalkylsilyl peroxides via radical C–C bond cleavage. Org Chem Front 2019. [DOI: 10.1039/c9qo00472f] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A mild copper-catalyzed radical C–C bond cleavage/borylation of cycloalkylsilyl peroxides is described. A range of four to eight, and even twelve-membered substrates were compatible, offering rapid access to keto-functionalized alkyl boronic esters.
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Affiliation(s)
- Jun-Cheng Yang
- Department of Chemistry
- School of Science
- Xi'an Key Laboratory of Sustainable Energy Material Chemistry
- and MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter
- Xi'an Jiaotong University
| | - Lei Chen
- Department of Chemistry
- School of Science
- Xi'an Key Laboratory of Sustainable Energy Material Chemistry
- and MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter
- Xi'an Jiaotong University
| | - Fan Yang
- Department of Chemistry
- School of Science
- Xi'an Key Laboratory of Sustainable Energy Material Chemistry
- and MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter
- Xi'an Jiaotong University
| | - Pengfei Li
- Center for Organic Chemistry
- Frontier Institute of Science and Technology
- Xi'an Jiaotong University
- Xi'an 710054
- China
| | - Li-Na Guo
- Department of Chemistry
- School of Science
- Xi'an Key Laboratory of Sustainable Energy Material Chemistry
- and MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter
- Xi'an Jiaotong University
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195
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Zhu ZF, Zhang MM, Liu F. Radical alkylation of isocyanides with amino acid-/peptide-derived Katritzky salts via photoredox catalysis. Org Biomol Chem 2019; 17:1531-1534. [DOI: 10.1039/c8ob02786b] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
A mild and practical protocol is developed for the synthesis of functionalized phenanthridines via C(sp3)–N bond activation upon visible-light irradiation.
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Affiliation(s)
- Ze-Fan Zhu
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Department of Medicinal Chemistry
- College of Pharmaceutical Sciences
- Soochow University
- Suzhou
- People's Republic of China
| | - Miao-Miao Zhang
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Department of Medicinal Chemistry
- College of Pharmaceutical Sciences
- Soochow University
- Suzhou
- People's Republic of China
| | - Feng Liu
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Department of Medicinal Chemistry
- College of Pharmaceutical Sciences
- Soochow University
- Suzhou
- People's Republic of China
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196
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Cheng Z, Jin W, Liu C. B2pin2-catalyzed oxidative cleavage of a CC double bond with molecular oxygen. Org Chem Front 2019. [DOI: 10.1039/c8qo01412d] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
B2pin2-catalyzed oxidative cleavage of the CC double bond of an olefin with molecular oxygen as the oxidant and oxygen source has been developed.
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Affiliation(s)
- Zhen Cheng
- The Key Laboratory of Oil and Gas Fine Chemicals
- Ministry of Education & Xinjiang Uygur Autonomous Region
- Urumqi Key Laboratory of Green Catalysis and Synthesis Technology
- School of Chemistry and Chemical Engineering
- Xinjiang University
| | - Weiwei Jin
- The Key Laboratory of Oil and Gas Fine Chemicals
- Ministry of Education & Xinjiang Uygur Autonomous Region
- Urumqi Key Laboratory of Green Catalysis and Synthesis Technology
- School of Chemistry and Chemical Engineering
- Xinjiang University
| | - Chenjiang Liu
- The Key Laboratory of Oil and Gas Fine Chemicals
- Ministry of Education & Xinjiang Uygur Autonomous Region
- Urumqi Key Laboratory of Green Catalysis and Synthesis Technology
- School of Chemistry and Chemical Engineering
- Xinjiang University
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197
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He Z, Zhu Q, Hu X, Wang L, Xia C, Liu C. Cooperation between an alcoholic proton and boryl species in the catalytic gem-hydrodiborylation of carboxylic esters to access 1,1-diborylalkanes. Org Chem Front 2019. [DOI: 10.1039/c9qo00007k] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Cooperation between an alcoholic proton and boryl species in the selective gem-hydrodiborylation of carboxylic esters is described.
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Affiliation(s)
- Zeyu He
- State Key Laboratory for Oxo Synthesis and Selective Oxidation
- Suzhou Research Institute of LICP
- Lanzhou Institute of Chemical Physics (LICP)
- Chinese Academy of Sciences
- Lanzhou 730000
| | - Qing Zhu
- State Key Laboratory for Oxo Synthesis and Selective Oxidation
- Suzhou Research Institute of LICP
- Lanzhou Institute of Chemical Physics (LICP)
- Chinese Academy of Sciences
- Lanzhou 730000
| | - Xiyu Hu
- State Key Laboratory for Oxo Synthesis and Selective Oxidation
- Suzhou Research Institute of LICP
- Lanzhou Institute of Chemical Physics (LICP)
- Chinese Academy of Sciences
- Lanzhou 730000
| | - Lu Wang
- State Key Laboratory for Oxo Synthesis and Selective Oxidation
- Suzhou Research Institute of LICP
- Lanzhou Institute of Chemical Physics (LICP)
- Chinese Academy of Sciences
- Lanzhou 730000
| | - Chungu Xia
- State Key Laboratory for Oxo Synthesis and Selective Oxidation
- Suzhou Research Institute of LICP
- Lanzhou Institute of Chemical Physics (LICP)
- Chinese Academy of Sciences
- Lanzhou 730000
| | - Chao Liu
- State Key Laboratory for Oxo Synthesis and Selective Oxidation
- Suzhou Research Institute of LICP
- Lanzhou Institute of Chemical Physics (LICP)
- Chinese Academy of Sciences
- Lanzhou 730000
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198
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Affiliation(s)
- Marco Wollenburg
- Organisch-Chemisches InstitutWestfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Deutschland
| | - Daniel Moock
- Organisch-Chemisches InstitutWestfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Deutschland
| | - Frank Glorius
- Organisch-Chemisches InstitutWestfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Deutschland
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199
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Cheng Y, Mück‐Lichtenfeld C, Studer A. Metal-Free Radical Borylation of Alkyl and Aryl Iodides. Angew Chem Int Ed Engl 2018; 57:16832-16836. [PMID: 30332527 PMCID: PMC6470957 DOI: 10.1002/anie.201810782] [Citation(s) in RCA: 125] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Indexed: 11/06/2022]
Abstract
A metal-free radical borylation of alkyl and aryl iodides with bis(catecholato)diboron (B2 cat2 ) as the boron source under mild conditions is introduced. The borylation reaction is operationally easy to conduct and shows high functional group tolerance and broad substrate scope. Radical clock experiments and density functional theory calculations provide insights into the mechanism and rate constants for C-radical borylation with B2 cat2 are disclosed.
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Affiliation(s)
- Ying Cheng
- Westfälische Wilhelms-UniversitätOrganisch-Chemisches InstitutCorrensstrasse 4048149MünsterGermany
| | - Christian Mück‐Lichtenfeld
- Westfälische Wilhelms-UniversitätOrganisch-Chemisches InstitutCorrensstrasse 4048149MünsterGermany
- Westfälische Wilhelms-UniversitätCenter for Multiscale Theory and Computation (CMTC)Corrensstrasse 4048149MünsterGermany
| | - Armido Studer
- Westfälische Wilhelms-UniversitätOrganisch-Chemisches InstitutCorrensstrasse 4048149MünsterGermany
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200
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Wang D, Xue X, Houk KN, Shi Z. Mild Ring‐Opening 1,3‐Hydroborations of Non‐Activated Cyclopropanes. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201811036] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Di Wang
- State Key Laboratory of Coordination ChemistrySchool of Chemistry and Chemical EngineeringNanjing University Nanjing 210093 China
| | - Xiao‐Song Xue
- Department of Chemistry and BiochemistryUniversity of California Los Angeles CA 90095 USA
- State Key Laboratory of Elemento-organic ChemistryCollege of ChemistryNankai University Tianjin 300071 China
| | - Kendall N. Houk
- Department of Chemistry and BiochemistryUniversity of California Los Angeles CA 90095 USA
| | - Zhuangzhi Shi
- State Key Laboratory of Coordination ChemistrySchool of Chemistry and Chemical EngineeringNanjing University Nanjing 210093 China
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