1
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Yu Q, Zhou D, Yu P, Song C, Ze Tan, Li J. Silver-Catalyzed Decarboxylative Nitrooxylation of Aliphatic Carboxylic Acids. Org Lett 2024; 26:5856-5861. [PMID: 38950381 DOI: 10.1021/acs.orglett.4c02180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/03/2024]
Abstract
Here, we present a silver-catalyzed decarboxylative nitrooxylation via a radical-based approach. The substrate scope of this reaction prototype extends to nonactivated primary and secondary carboxylic acids. This protocol provides a practical method for the synthesis of an unprecedented family of organic nitrates and exhibits wide functional group compatibility. Preliminary mechanistic studies reveal that a high-valent silver(II) nitrate complex is a versatile NO3 resource pool, allowing for facile C-O bond formation.
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Affiliation(s)
- Qian Yu
- College of Chemistry and Chemical Engineering, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha, Hunan 410082, China
| | - Donglin Zhou
- College of Chemistry and Chemical Engineering, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha, Hunan 410082, China
| | - Pingping Yu
- College of Chemistry and Chemical Engineering, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha, Hunan 410082, China
| | - Chunlan Song
- College of Chemistry and Chemical Engineering, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha, Hunan 410082, China
| | - Ze Tan
- College of Chemistry and Chemical Engineering, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha, Hunan 410082, China
| | - Jiakun Li
- College of Chemistry and Chemical Engineering, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha, Hunan 410082, China
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2
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Sakakibara Y, Itami K, Murakami K. Switchable Decarboxylation by Energy- or Electron-Transfer Photocatalysis. J Am Chem Soc 2024; 146:1554-1562. [PMID: 38103176 DOI: 10.1021/jacs.3c11588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2023]
Abstract
Kolbe dimerization and Hofer-Moest reactions are well-investigated carboxylic acid transformations, wherein new carbon-carbon and carbon-heteroatom bonds are constructed via electrochemical decarboxylation. These transformations can be switched by choosing an electrode that allows control of the reactive intermediate, such as carbon radical or carbocation. However, the requirement of a high current density diminishes the functional group compatibility with these electrochemical reactions. Here, we demonstrate the photocatalytic decarboxylative transformation of activated carboxylic acids in a switchable and functional group-compatible manner. We discovered that switching between Kolbe-type or Hofer-Moest-type reactions can be accomplished with suitable photocatalysts by controlling the reaction pathways: energy transfer (EnT) and single-electron transfer (SET). The EnT pathway promoted by an organo-photocatalyst yielded 1,2-diarylethane from arylacetic acids, whereas the ruthenium photoredox catalyst allows the construction of an ester scaffold with two arylmethyl moieties via the SET pathway. The resulting radical intermediates were coupled to olefins to realize multicomponent reactions. Consequently, four different products were selectively obtained from a simple carboxylic acid. This discovery offers new opportunities for selectively synthesizing multiple products via switchable reactions using identical substrates with minimal cost and effort.
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Affiliation(s)
- Yota Sakakibara
- Graduate School of Science, Nagoya University, Chikusa 464-8602, Nagoya, Japan
- Department of Chemistry, School of Science, Kwansei Gakuin University, Sanda 669-1330, Hyogo, Japan
- Japanese Science and Technology Agency (JST)-PRESTO, Chiyoda 102-0076, Tokyo, Japan
| | - Kenichiro Itami
- Graduate School of Science, Nagoya University, Chikusa 464-8602, Nagoya, Japan
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Chikusa 464-8602, Nagoya, Japan
| | - Kei Murakami
- Department of Chemistry, School of Science, Kwansei Gakuin University, Sanda 669-1330, Hyogo, Japan
- Japanese Science and Technology Agency (JST)-PRESTO, Chiyoda 102-0076, Tokyo, Japan
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3
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Wang A, Yin YY, Rukhsana, Wang LQ, Jin JH, Shen YM. Visible-Light-Mediated Three-Component Decarboxylative Coupling Reactions to Synthesize 1,4-Diol Monoethers. J Org Chem 2023; 88:13871-13882. [PMID: 37683099 DOI: 10.1021/acs.joc.3c01483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/10/2023]
Abstract
An efficient approach for 1,2-difunctionalization of aromatic olefins and the synthesis of functionalized 1,4-diols monoethers has been established via a photoinduced three-component reaction of an α-alkoxycarboxylic acid, an aromatic olefin, and an aldehyde. The reaction proceeds by photoinduced oxidative decarboxylation of the carboxylic acid followed by the addition of the α-alkoxyalkyl radical to the olefin, one-electron reduction of the addition radical, and the nucleophilic attack of the resulting carbanion to the aldehyde. Besides the convenient one-pot protocol of the three-component reaction, this method offers several other advantages, including good functional group tolerance for the three substrates, gentle reaction conditions, and ease of scaling up. The reaction mechanism has been investigated through free radical trapping experiment and isotope labeling experiments.
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Affiliation(s)
- Ai Wang
- School of Chemistry and Chemical Engineering, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, P.R. China
| | - Yu-Yun Yin
- School of Chemistry and Chemical Engineering, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, P.R. China
- Zhejiang Sci-Tech University Shengzhou Innovation Research Institute, Shengzhou 312400, P.R. China
| | - Rukhsana
- School of Chemistry and Chemical Engineering, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, P.R. China
| | - Le-Quan Wang
- School of Chemistry and Chemical Engineering, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, P.R. China
| | - Jia-Hui Jin
- School of Chemistry and Chemical Engineering, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, P.R. China
| | - Yong-Miao Shen
- School of Chemistry and Chemical Engineering, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, P.R. China
- Zhejiang Sci-Tech University Shengzhou Innovation Research Institute, Shengzhou 312400, P.R. China
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4
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Bhowmick A, Chatterjee A, Pathak SS, Bhat RG. A visible light-driven direct synthesis of industrially relevant glutaric acid diesters from aldehydes. Chem Commun (Camb) 2023; 59:11875-11878. [PMID: 37724011 DOI: 10.1039/d3cc02557h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/20/2023]
Abstract
A straightforward and practical method has been developed to access α-substituted glutaric diesters from acrylates and aldehydes using visible light, with Eosin Y facilitating hydrogen atom transfer (HAT) and subsequent Giese-type addition. Also, sunlight has been successfully used as an alternative sustainable light source. The method has also been explored to access substituted 4,5-dihydro-2H-pyridazinones, which have potential biological and industrial applications. Comprehensive mechanistic investigations have been carried out.
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Affiliation(s)
- Anindita Bhowmick
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Pune, Dr. Homi Bhabha Road, Pashan, 411008, Maharashtra, India.
| | - Abhijit Chatterjee
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Pune, Dr. Homi Bhabha Road, Pashan, 411008, Maharashtra, India.
| | - Sidharth S Pathak
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Pune, Dr. Homi Bhabha Road, Pashan, 411008, Maharashtra, India.
| | - Ramakrishna G Bhat
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Pune, Dr. Homi Bhabha Road, Pashan, 411008, Maharashtra, India.
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5
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Chandra A, Yadav N, Payra S, Parida KN. Oxidation of Thiols with IBX or DMP: One-Pot Access to Thiosulfonates or 2-Iodobenzoates and Applications in Functional Group Transformations. Org Lett 2023; 25:6256-6261. [PMID: 37602744 DOI: 10.1021/acs.orglett.3c02017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/22/2023]
Abstract
o-Iodoxybenzoic acid (IBX) and Dess-Martin periodinane (DMP) are employed for thiol to thiosulfonate conversion at rt. DMP is better than IBX in terms of reaction rate, conversion, and required equivalents. IBX-mediated oxidation of benzyl thiols produced thiosulfonates, whereas DMP afforded O-benzyl esters. The one-pot conversion of a thiol to an ester is unprecedented; this atom-economic transformation has potential for functional group transformations (FGTs), e.g., an alcohol and an aldehyde are accessed from benzyl thiol.
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Affiliation(s)
- Ajeet Chandra
- Department of Chemistry, Indian Institute of Technology (IIT) Bombay, Mumbai 400 076, India
| | - Navin Yadav
- Department of Chemistry, IIT Kanpur, Kanpur 208016, India
| | - Soumen Payra
- Department of Chemistry, IIT Kanpur, Kanpur 208016, India
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6
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Lutovsky GA, Gockel SN, Bundesmann MW, Bagley SW, Yoon TP. Iron-mediated modular decarboxylative cross-nucleophile coupling. Chem 2023; 9:1610-1621. [PMID: 37637494 PMCID: PMC10449378 DOI: 10.1016/j.chempr.2023.04.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/29/2023]
Abstract
Carboxylic acids are valuable building blocks for pharmaceutical discovery because of their chemical stability, commercial availability, and structural diversity. Decarboxylative coupling reactions enable versatile functionalization of these feedstock chemicals, but many of the most general methods require prefunctionalization of carboxylic acids with redox-active moieties. These internal oxidants can be costly, their installation impedes rapid library synthesis, and their use results in environmentally problematic organic byproducts. We report herein a method for the direct decarboxylative cross-coupling of native carboxylic acids with nucleophilic coupling partners mediated by inexpensive, terrestrially abundant, and nontoxic Fe(III) salts. This method involves an initial photochemical decarboxylation followed by radical-polar crossover, which enables the construction of diverse carbon-carbon, carbon-oxygen, and carbon-nitrogen bonds with remarkable generality.
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Affiliation(s)
- Grace A. Lutovsky
- Department of Chemistry, University of Wisconsin–Madison, 1101 University Avenue, Madison, WI 53706, USA
- These authors contributed equally
| | - Samuel N. Gockel
- Department of Chemistry, University of Wisconsin–Madison, 1101 University Avenue, Madison, WI 53706, USA
- Department of Chemistry, Colorado State University Pueblo, 2200 Bonforte Boulevard, Pueblo, CO 81001, USA
| | | | - Scott W. Bagley
- Medicine Design, Pfizer Inc., Eastern Point Road, Groton, CT 06340, USA
| | - Tehshik P. Yoon
- Department of Chemistry, University of Wisconsin–Madison, 1101 University Avenue, Madison, WI 53706, USA
- Lead contact
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7
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Abstract
The emergence of modern photocatalysis, characterized by mildness and selectivity, has significantly spurred innovative late-stage C-H functionalization approaches that make use of low energy photons as a controllable energy source. Compared to traditional late-stage functionalization strategies, photocatalysis paves the way toward complementary and/or previously unattainable regio- and chemoselectivities. Merging the compelling benefits of photocatalysis with the late-stage functionalization workflow offers a potentially unmatched arsenal to tackle drug development campaigns and beyond. This Review highlights the photocatalytic late-stage C-H functionalization strategies of small-molecule drugs, agrochemicals, and natural products, classified according to the targeted C-H bond and the newly formed one. Emphasis is devoted to identifying, describing, and comparing the main mechanistic scenarios. The Review draws a critical comparison between established ionic chemistry and photocatalyzed radical-based manifolds. The Review aims to establish the current state-of-the-art and illustrate the key unsolved challenges to be addressed in the future. The authors aim to introduce the general readership to the main approaches toward photocatalytic late-stage C-H functionalization, and specialist practitioners to the critical evaluation of the current methodologies, potential for improvement, and future uncharted directions.
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Affiliation(s)
- Peter Bellotti
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 36, 48149Münster, Germany
| | - Huan-Ming Huang
- School of Physical Science and Technology, ShanghaiTech University, 201210Shanghai, China
| | - Teresa Faber
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 36, 48149Münster, Germany
| | - Frank Glorius
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 36, 48149Münster, Germany
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8
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Yu Q, Zhou D, Liu Y, Huang X, Song C, Ma J, Li J. Synthesis of Benzylic Alcohols by Decarboxylative Hydroxylation. Org Lett 2023; 25:47-52. [PMID: 36563335 DOI: 10.1021/acs.orglett.2c03741] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Herein, we demonstrate an efficient method for the decarboxylative hydroxylation of carboxylic acids with silver(I) as the catalyst and cerium ammonium nitrate as the oxidant and its utility in chemoselective late-stage functionalization of natural products and drug molecules. The chemoselectivity of this protocol arises from a benzylic nitrate intermediate that retards further oxidation and is hydrolyzed to the final benzylic alcohol product. Mechanistic investigation reveals that the facile oxidation of silver carboxylate affords silver(II) species as an intermediate oxidant responsible for decarboxylation.
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Affiliation(s)
- Qian Yu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Donglin Zhou
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Yaoyue Liu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Xuejin Huang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Chunlan Song
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Junjun Ma
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Jiakun Li
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
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9
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Selective functionalization of benzylic C(sp3)–H bonds to synthesize complex molecules. Chem 2022. [DOI: 10.1016/j.chempr.2022.10.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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10
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Pan B, Sun HT, Zhang SS, Wang S, Yang YQ, Xu GZ, Su XB. Solvent-Controlled Regioselective Reaction of 2-Methyleneaziridines with Acrylic/Propargylic Acids: Synthesis of Carboxylate Aziridine/Acetone Esters. Org Lett 2022; 24:7492-7496. [PMID: 36215416 DOI: 10.1021/acs.orglett.2c02589] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Herein, we report a convenient solvent-controlled regioselective esterification to access two types of carboxylate esters without any additive or non-green activation strategy. In this transformation, 2-methyleneaziridines served as an ester reagent, providing two alternative electrophilic carbon centers. Notably, this protocol is suitable for some structure-complicated clinical molecules with a carboxylic acid group, presenting remarkable application potential.
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Affiliation(s)
- Bin Pan
- Shandong Peninsula Engineering Research Center of Comprehensive Brine Utilization, Weifang University of Science and Technology, Shouguang 262700, P. R. China
| | - Hao-Tian Sun
- Shandong Peninsula Engineering Research Center of Comprehensive Brine Utilization, Weifang University of Science and Technology, Shouguang 262700, P. R. China
| | - Shan-Shan Zhang
- Shandong Peninsula Engineering Research Center of Comprehensive Brine Utilization, Weifang University of Science and Technology, Shouguang 262700, P. R. China
| | - Shang Wang
- Shandong Peninsula Engineering Research Center of Comprehensive Brine Utilization, Weifang University of Science and Technology, Shouguang 262700, P. R. China
| | - Yong-Qi Yang
- Shandong Peninsula Engineering Research Center of Comprehensive Brine Utilization, Weifang University of Science and Technology, Shouguang 262700, P. R. China
| | - Guang-Zhao Xu
- School of Pharmacy, Weifang Medical University, Weifang 261053, P. R. China
| | - Xian-Bin Su
- College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, P. R. China
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11
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Zhang Y, Sahoo PK, Ren P, Qin Y, Cauwenbergh R, Nimmegeers P, SivaRaman G, Van Passel S, Guidetti A, Das S. Transition metal-free approach for late-stage benzylic C(sp 3)-H etherifications and esterifications. Chem Commun (Camb) 2022; 58:11454-11457. [PMID: 36148867 DOI: 10.1039/d2cc02661a] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report a transition metal-free approach for the regioselective functionalization of benzylic C(sp3)-H bonds using alcohols and carboxylic acids as the nucleophiles. This straightforward and general route has provided various benzylic ethers and esters, including twelve pharmaceutically relevant compounds.
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Affiliation(s)
- Yu Zhang
- ORSY Division, Department of Chemistry, Universiteit Antwerpen, Campus Groenenborger, Groenenborgerlaan 171, 2020 Antwerpen, Belgium.
| | - Prakash Kumar Sahoo
- ORSY Division, Department of Chemistry, Universiteit Antwerpen, Campus Groenenborger, Groenenborgerlaan 171, 2020 Antwerpen, Belgium.
| | - Peng Ren
- ORSY Division, Department of Chemistry, Universiteit Antwerpen, Campus Groenenborger, Groenenborgerlaan 171, 2020 Antwerpen, Belgium.
| | - Yuman Qin
- ORSY Division, Department of Chemistry, Universiteit Antwerpen, Campus Groenenborger, Groenenborgerlaan 171, 2020 Antwerpen, Belgium.
| | - Robin Cauwenbergh
- ORSY Division, Department of Chemistry, Universiteit Antwerpen, Campus Groenenborger, Groenenborgerlaan 171, 2020 Antwerpen, Belgium.
| | - Philippe Nimmegeers
- Department of Engineering Management, Universiteit Antwerpen, Prinsstraat 13, 2000, Antwerpen, Belgium.,Intelligence in Processes, Advanced Catalysts and Solvents (iPRACS), Faculty of Applied Engineering, Universiteit Antwerpen, Groenenborgerlaan 171, 2020 Antwerpen, Belgium
| | - Gandhi SivaRaman
- Department of Chemistry, Gandhigram Rural Institute, Gandhigram, 624032, Tamilnadu, India
| | - Steven Van Passel
- Department of Engineering Management, Universiteit Antwerpen, Prinsstraat 13, 2000, Antwerpen, Belgium.,Nanolab Centre of Excellence, Prinsstraat 13, 2000, Antwerpen, Belgium
| | - Andrea Guidetti
- Biophysics and Biomedical Physics (BIMEF), Department of Chemistry, University of Antwerp, B2610 Antwerp, Belgium
| | - Shoubhik Das
- ORSY Division, Department of Chemistry, Universiteit Antwerpen, Campus Groenenborger, Groenenborgerlaan 171, 2020 Antwerpen, Belgium.
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12
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Narobe R, Murugesan K, Haag C, Schirmer TE, König B. C(sp 3)-H Ritter amination by excitation of in situ generated iodine(III)-BF 3 complexes. Chem Commun (Camb) 2022; 58:8778-8781. [PMID: 35843213 DOI: 10.1039/d2cc03283j] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Visible light excitation of iodine(III)-BF3 complex enables the formation of carbocations from C(sp3)-H bonds. The complexes are generated catalytically from iodoarene, carboxylate ligand, the oxidizing agent Selectfluor, and the Lewis acid BF3. This modular catalytic system allows the formation of synthetically valuable amine derivatives without a metal- or photocatalyst.
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Affiliation(s)
- Rok Narobe
- Institute of Organic Chemistry, University of Regensburg, Universitätsstraße 31, 93053, Regensburg, Germany.
| | - Kathiravan Murugesan
- Institute of Organic Chemistry, University of Regensburg, Universitätsstraße 31, 93053, Regensburg, Germany.
| | - Christoph Haag
- Institute of Organic Chemistry, University of Regensburg, Universitätsstraße 31, 93053, Regensburg, Germany.
| | - Tobias Emanuel Schirmer
- Institute of Organic Chemistry, University of Regensburg, Universitätsstraße 31, 93053, Regensburg, Germany.
| | - Burkhard König
- Institute of Organic Chemistry, University of Regensburg, Universitätsstraße 31, 93053, Regensburg, Germany.
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13
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Golden DL, Suh SE, Stahl SS. Radical C(sp3)-H functionalization and cross-coupling reactions. Nat Rev Chem 2022; 6:405-427. [PMID: 35965690 PMCID: PMC9364982 DOI: 10.1038/s41570-022-00388-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/12/2022] [Indexed: 11/09/2022]
Abstract
C─H functionalization reactions are playing an increasing role in the preparation and modification of complex organic molecules, including pharmaceuticals, agrochemicals, and polymer precursors. Radical C─H functionalization reactions, initiated by hydrogen-atom transfer (HAT) and proceeding via open-shell radical intermediates, have been expanding rapidly in recent years. These methods introduce strategic opportunities to functionalize C(sp3)─H bonds. Examples include synthetically useful advances in radical-chain reactivity and biomimetic radical-rebound reactions. A growing number of reactions, however, proceed via "radical relay" whereby HAT generates a diffusible radical that is functionalized by a separate reagent or catalyst. The latter methods provide the basis for versatile C─H cross-coupling methods with diverse partners. In the present review, highlights of recent radical-chain and radical-rebound methods provide context for a survey of emerging radical-relay methods, which greatly expand the scope and utility of intermolecular C(sp3)─H functionalization and cross coupling.
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Affiliation(s)
- Dung L. Golden
- Department of Chemistry, University of Wisconsin–Madison, WI, USA
- These authors contributed equally: Dung L. Golden, Sung-Eun Suh
| | - Sung-Eun Suh
- Department of Chemistry, University of Wisconsin–Madison, WI, USA
- These authors contributed equally: Dung L. Golden, Sung-Eun Suh
- Department of Chemistry, Ajou University, Suwon, Republic of Korea
| | - Shannon S. Stahl
- Department of Chemistry, University of Wisconsin–Madison, WI, USA
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14
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Zhang Y, Jiang Y, Wang Y, Sun T, Meng Y, Huang Y, Lv X, Gao J, Zhang X, Zhang S, Liu S. Photoredox/Copper Dual-Catalyzed Benzylic C-H Esterification via Radical-Polar Crossover. Org Lett 2022; 24:2679-2683. [PMID: 35357841 DOI: 10.1021/acs.orglett.2c00763] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Herein, we report a distinctive photoredox/copper dual-catalyzed esterification of benzylic C-H bonds through the combination of photoredox-mediated hydrogen atom transfer and Cu(II)-mediated radical-polar crossover. This methodology demonstrates a high functional group tolerance (>40 examples) and moderate to good yields with structurally diverse benzylic C-H substrates. Notably, stoichiometric amounts of carboxylic acids are used as coupling partners, which allows the synthesis of structurally diverse benzylic esters and the late-stage functionalization of pharmaceuticals.
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Affiliation(s)
- Yifan Zhang
- College of Medicine, Jiaxing University, 118 Jiahang Road, Jiaxing 314001, P. R. China
| | - Yuxin Jiang
- College of Medicine, Jiaxing University, 118 Jiahang Road, Jiaxing 314001, P. R. China
| | - Yi Wang
- College of Medicine, Jiaxing University, 118 Jiahang Road, Jiaxing 314001, P. R. China
| | - Tianyi Sun
- College of Medicine, Jiaxing University, 118 Jiahang Road, Jiaxing 314001, P. R. China
| | - Yuanjie Meng
- College of Medicine, Jiaxing University, 118 Jiahang Road, Jiaxing 314001, P. R. China
| | - Yueyan Huang
- College of Medicine, Jiaxing University, 118 Jiahang Road, Jiaxing 314001, P. R. China
| | - Xiaoqing Lv
- College of Medicine, Jiaxing University, 118 Jiahang Road, Jiaxing 314001, P. R. China
| | - Jinlai Gao
- College of Medicine, Jiaxing University, 118 Jiahang Road, Jiaxing 314001, P. R. China
| | - Xiaoqin Zhang
- College of Medicine, Jiaxing University, 118 Jiahang Road, Jiaxing 314001, P. R. China
| | - Shilei Zhang
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, 199 Ren'ai Road, Suzhou, Jiangsu 215123, P. R. China
| | - Shihui Liu
- College of Medicine, Jiaxing University, 118 Jiahang Road, Jiaxing 314001, P. R. China
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15
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Lian P, Li R, Wan X, Xiang Z, Liu H, Cao Z, Wan X. Acetylation of alcohols and amines under visible light irradiation: diacetyl as an acylation reagent and photosensitizer. Org Chem Front 2022. [DOI: 10.1039/d1qo01613j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
An unprecedented strategy for the acetylation of alcohols and amines using diacetyl as both an acylation reagent and a photosensitizer was well developed.
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Affiliation(s)
- Pengcheng Lian
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Ruyi Li
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Xiao Wan
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Zixin Xiang
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Hang Liu
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Zhiyu Cao
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Xiaobing Wan
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
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16
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Narobe R, Murugesan K, Schmid S, König B. Decarboxylative Ritter-Type Amination by Cooperative Iodine (I/III)─Boron Lewis Acid Catalysis. ACS Catal 2021. [DOI: 10.1021/acscatal.1c05077] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Rok Narobe
- Institute of Organic Chemistry, Faculty of Chemistry and Pharmacy, University of Regensburg, 93053 Regensburg, Germany
| | - Kathiravan Murugesan
- Institute of Organic Chemistry, Faculty of Chemistry and Pharmacy, University of Regensburg, 93053 Regensburg, Germany
| | - Simon Schmid
- Institute of Organic Chemistry, Faculty of Chemistry and Pharmacy, University of Regensburg, 93053 Regensburg, Germany
| | - Burkhard König
- Institute of Organic Chemistry, Faculty of Chemistry and Pharmacy, University of Regensburg, 93053 Regensburg, Germany
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17
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Zhang X, Yang Y, Wang F, Zhou Z, Zhang H, Zhu Y. An Approach to the Synthesis of Electron-Rich and Hindered Esters and Its Application to the Synthesis of Acteoside. Org Lett 2021; 23:9210-9215. [PMID: 34779636 DOI: 10.1021/acs.orglett.1c03528] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Electron-rich esters are ubiquitously distributed in natural products and play a central role in bioactivities. Herein, we disclose an efficient, mild, and general esterification approach to the synthesis of these esters by employing gold(I)-catalyzed acylation reaction with alkyne-tethered mixed anhydrides and alcohols. This method can be applied to ester-bond formation in complex substrates and facilitates efficient synthesis of acteoside, which belongs to the family of phenylethanoid glycosides and possesses a broad range of bioactivities.
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Affiliation(s)
- Xiaojuan Zhang
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education; Yunnan Provincial Center for Re- search & Development of Natural Products; School of Chemical Science and Technology, Yunnan University, Kunming, Yunnan 650091, P.R. China
| | - Yutong Yang
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education; Yunnan Provincial Center for Re- search & Development of Natural Products; School of Chemical Science and Technology, Yunnan University, Kunming, Yunnan 650091, P.R. China
| | - Fuye Wang
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education; Yunnan Provincial Center for Re- search & Development of Natural Products; School of Chemical Science and Technology, Yunnan University, Kunming, Yunnan 650091, P.R. China
| | - Zhengbing Zhou
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education; Yunnan Provincial Center for Re- search & Development of Natural Products; School of Chemical Science and Technology, Yunnan University, Kunming, Yunnan 650091, P.R. China
| | - Hongbin Zhang
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education; Yunnan Provincial Center for Re- search & Development of Natural Products; School of Chemical Science and Technology, Yunnan University, Kunming, Yunnan 650091, P.R. China
| | - Yugen Zhu
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education; Yunnan Provincial Center for Re- search & Development of Natural Products; School of Chemical Science and Technology, Yunnan University, Kunming, Yunnan 650091, P.R. China
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18
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Li P, Zbieg JR, Terrett JA. A Platform for Decarboxylative Couplings via Photoredox Catalysis: Direct Access to Carbocations from Carboxylic Acids for Carbon–Oxygen Bond Formation. ACS Catal 2021. [DOI: 10.1021/acscatal.1c03251] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Peijun Li
- Discovery Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Jason R. Zbieg
- Discovery Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Jack A. Terrett
- Discovery Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
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