1
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Oshida K, Yuan K, Yamazaki Y, Tsukimura R, Nishio H, Nomoto K, Miura H, Shishido T, Jin X, Nozaki K. Hydrogen-Induced Formation of Surface Acid Sites on Pt/Al(PO 3) 3 Enables Remarkably Efficient Hydrogenolysis of C-O Bonds in Alcohols and Ethers. Angew Chem Int Ed Engl 2024; 63:e202403092. [PMID: 38415808 DOI: 10.1002/anie.202403092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Accepted: 02/28/2024] [Indexed: 02/29/2024]
Abstract
The hydrogenolysis of oxygenates such as alcohols and ethers is central to the biomass valorization and also a valuable transformation in organic synthesis. However, a mild and efficient catalyst system for the hydrogenolysis of a large variety of alcohols and ethers with various functional groups is still underdeveloped. Here, we report an aluminum metaphosphate-supported Pt nanoparticles (Pt/Al(PO3)3) for the hydrogenolysis of a wide variety of primary, secondary, and tertiary alkyl and benzylic alcohols, and dialkyl, aryl alkyl, and diaryl ethers, including biomass-derived furanic compounds, under mild conditions (0.1-1 atm of H2, as low as 70 °C). Mechanistic studies suggested that H2 induces formation of the surface Brønsted acid sites via its cleavage by supported Pt nanoparticles. Accordingly, the high efficiency and the wide applicability of the catalyst system are attributed to the activation and cleavage of C-O bonds by the hydrogen-induced Brønsted acid sites with the assistance of Lewis acidic Al sites on the catalyst surface. The high efficiency of the catalyst implies its potential application in energy-efficient biomass valorization or fine chemical synthesis.
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Affiliation(s)
- Kento Oshida
- Department of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Kang Yuan
- Department of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Yukari Yamazaki
- Department of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Rio Tsukimura
- Department of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Hidenori Nishio
- Department of Applied Chemistry for Environment, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University, 1-1 Minami-Osawa, Hachioji, Tokyo 192-0397, Japan
| | - Katsutoshi Nomoto
- Department of Applied Chemistry for Environment, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University, 1-1 Minami-Osawa, Hachioji, Tokyo 192-0397, Japan
| | - Hiroki Miura
- Department of Applied Chemistry for Environment, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University, 1-1 Minami-Osawa, Hachioji, Tokyo 192-0397, Japan
| | - Tetsuya Shishido
- Department of Applied Chemistry for Environment, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University, 1-1 Minami-Osawa, Hachioji, Tokyo 192-0397, Japan
| | - Xiongjie Jin
- Department of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Kyoko Nozaki
- Department of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
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2
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Xu W, Fan C, Hu X, Xu T. Deoxygenative Transformation of Alcohols via Phosphoranyl Radical from Exogenous Radical Addition. Angew Chem Int Ed Engl 2024; 63:e202401575. [PMID: 38357753 DOI: 10.1002/anie.202401575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Revised: 02/13/2024] [Accepted: 02/15/2024] [Indexed: 02/16/2024]
Abstract
A general approach to the direct deoxygenative transformation of primary, secondary, and tertiary alcohols has been developed. It undergoes through phosphoranyl radical intermediates generated by the addition of exogenous iodine radical to trivalent alkoxylphosphanes. Since these alkoxylphosphanes are readily in situ obtained from alcohols and commercially available, inexpensive chlorodiphenylphosphine, a diverse range of alcohols with various functional groups can be utilized to proceed deoxygenative cross-couplings with alkenes or aryl iodides. The selective transformation of polyhydroxy substrates and the rapid synthesis of complex organic molecules are also demonstrated with this method.
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Affiliation(s)
- Wenhao Xu
- Shanghai Key Laboratory of Chemical Assessment and Sustain-ability, School of Chemical Science and Engineering, Tongji University, 1239 Siping Road, 200092, Shanghai, P. R. China
| | - Chao Fan
- Laboratory of Inorganic Synthesis and Catalysis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015, Lausanne, Switzerland
| | - Xile Hu
- Laboratory of Inorganic Synthesis and Catalysis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015, Lausanne, Switzerland
| | - Tao Xu
- Shanghai Key Laboratory of Chemical Assessment and Sustain-ability, School of Chemical Science and Engineering, Tongji University, 1239 Siping Road, 200092, Shanghai, P. R. China
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3
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Xiong Y, Zhang Q, Zhang J, Wu X. Visible-Light-Driven Deoxygenative Heteroarylation of Alcohols with Heteroaryl Sulfones. J Org Chem 2024; 89:3629-3634. [PMID: 38364202 DOI: 10.1021/acs.joc.3c02733] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2024]
Abstract
The visible-light-promoted deoxygenative radical heteroarylation of alcohols was achieved in the absence of any external photosensitizers. The processes occur through the generation of xanthate salts from alcohols, followed by SET and fragmentation, delivering alkyl radicals to react with heteroaryl sulfones. This method is amenable for a wide range of alcohols with good functional group tolerance, providing a practical strategy for the alkylation of benzo-heteroaromatics. Mechanism studies indicate that direct visible-light excitation of xanthate anions and subsequent SET initiate the reactions.
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Affiliation(s)
- Yanjiao Xiong
- Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, Hubei 430074, P. R. China
| | - Qi Zhang
- Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, Hubei 430074, P. R. China
| | - Jun Zhang
- Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, Hubei 430074, P. R. China
| | - Xuesong Wu
- Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, Hubei 430074, P. R. China
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4
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Tang WY, Zheng X, Yao X, Lin JH, Zheng QT, Xiao JC. Ph 3P/ICH 2CH 2I-promoted reductive deoxygenation of alcohols. Org Biomol Chem 2023; 21:8989-8992. [PMID: 37937947 DOI: 10.1039/d3ob01698f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2023]
Abstract
Owing to the ubiquity of the hydroxyl group, reductive deoxygenation of alcohols has become an active research area. The classic Barton-McCombie reaction suffers from a tedious two-step procedure. New efficient methods have been developed, but they have some limitations, such as a narrow substrate scope and the use of moisture-sensitive Lewis acids. In this work, we describe the Ph3P/ICH2CH2I-promoted reductive deoxygenation of alcohols with NaBH4. The process is applicable to benzyl, allyl and propargyl alcohols, and also to primary and secondary alcohols, demonstrating a wide substrate scope and a good level of functional group tolerance. This protocol features convenient operation and low cost of all reagents.
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Affiliation(s)
- Wei-Ying Tang
- Institute of Pharmacy and Pharmacology, Hengyang Medicinal School, University of South China, Hengyang, Hunan, 421001, China
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, 200032, China.
| | - Xing Zheng
- Institute of Pharmacy and Pharmacology, Hengyang Medicinal School, University of South China, Hengyang, Hunan, 421001, China
- Department of Pharmacy, Hunan Vocational College of Science and Technology, Third Zhongyi Shan Road, Changsha, Hunan, 410004, China
| | - Xu Yao
- Institute of Pharmacy and Pharmacology, Hengyang Medicinal School, University of South China, Hengyang, Hunan, 421001, China
| | - Jin-Hong Lin
- Department of Chemistry, Innovative Drug Research Center, Shanghai University, 200444 Shanghai, China.
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, 200032, China.
| | - Qu-Tong Zheng
- Hunan University of Chinese Medicine, School of Pharmacy, Changsha, Hunan 410208, China.
| | - Ji-Chang Xiao
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, 200032, China.
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5
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Zade VM, Gangnale LD, Athawale PR, Reddy DS. Direct Deoxygenation of α-Hydroxy and α,β-Dihydroxy Ketones Using a Silyl Lithium Reagent. J Org Chem 2023; 88:14227-14235. [PMID: 37728533 DOI: 10.1021/acs.joc.3c01613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/21/2023]
Abstract
A reliable method for the one-step direct deoxygenation of α-hydroxy ketones has been developed using a silyl lithium reagent and acetic anhydride. The method is metal-catalyst-free and does not require prefunctionalization of the hydroxy group prior to its removal. Deoxygenation of different primary, secondary, and tertiary alcohols was carried out with up to 98% isolated yield. Additionally, double deoxygenation was achieved when the present method was applied to α,β-dihydroxy ketones to access the corresponding enones in a single step.
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Affiliation(s)
- Vishal M Zade
- Organic Chemistry Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, Maharashtra 411008, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India
| | - Laxmikant D Gangnale
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India
- CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad, Telangana 500007, India
| | - Paresh R Athawale
- Organic Chemistry Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, Maharashtra 411008, India
| | - D Srinivasa Reddy
- Organic Chemistry Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, Maharashtra 411008, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India
- CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad, Telangana 500007, India
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6
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Wang J, Wang T, Du H, Chen N, Xu J, Yang Z. Accessing para-Alkylphenols via Iridium-Catalyzed Site-Specific Deoxygenation of Alcohols. J Org Chem 2023; 88:12572-12584. [PMID: 37594916 DOI: 10.1021/acs.joc.3c01294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/20/2023]
Abstract
An iridium-catalyzed and phenol-directed deoxygenation of benzylic alcohols comes as an alternative access to 4-alkylphenols, featuring low catalyst loading (S/C up to 20,000, TOF up to 12,400 h-1), high functionality compatibility, and excellent site-selectivity. The applications in late-stage modification of steroids and gram-scale total synthesis of a Gastrodia elata extract are highlighted. Mechanistically, the intermediacy of quinone methide controls the site-selectivity, and the formation of iridium hydride serves as the rate-limiting step.
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Affiliation(s)
- Jing Wang
- Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Tingting Wang
- Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Hongguang Du
- Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Ning Chen
- Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Jiaxi Xu
- Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Zhanhui Yang
- Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P. R. China
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7
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Blackner JJ, Rooney DM, Hollett JW, McCubbin JA. Ferrocenium Boronic Acid Catalyzed Deoxygenative Coupling of Alcohols with Carbon- and Nitrogen-Based Borate and Silane Nucleophiles. J Org Chem 2023; 88:8505-8511. [PMID: 37285506 PMCID: PMC10337667 DOI: 10.1021/acs.joc.3c00463] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Indexed: 06/09/2023]
Abstract
A boronic acid catalyzed carbon-carbon and carbon-nitrogen bond-forming reaction for the functionalization of various π-activated alcohols has been developed. Ferrocenium boronic acid hexafluoroantimonate salt was identified as an effective catalyst in the direct deoxygenative coupling of alcohols with a variety of potassium trifluoroborate and organosilane nucleophiles. In a comparison between these two classes of nucleophiles, the use of organosilanes leads to higher reaction yields, increased diversity of the alcohol substrate scope, and high E/Z selectivity. Furthermore, the reaction proceeds under mild conditions and yields up to 98%. Computational studies provide a rationalization for a mechanistic pathway for the retention of E/Z stereochemistry when E or Z alkenyl silanes are used as nucleophiles. This methodology is complementary to existing methodologies for deoxygenative coupling reactions involving organosilanes, and it is effective with a variety of organosilane nucleophile sub-types, including allylic, vinylic, and propargylic trimethylsilanes.
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Affiliation(s)
- Jake J. Blackner
- Department
of Chemistry, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada
| | - Deirdre M. Rooney
- Department
of Chemistry, University of Winnipeg, 515 Portage Avenue, Winnipeg, Manitoba R3B 2E9, Canada
| | - Joshua W. Hollett
- Department
of Chemistry, University of Winnipeg, 515 Portage Avenue, Winnipeg, Manitoba R3B 2E9, Canada
| | - J. Adam McCubbin
- Department
of Chemistry, University of Winnipeg, 515 Portage Avenue, Winnipeg, Manitoba R3B 2E9, Canada
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8
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Rygus JPG, Hall DG. Direct nucleophilic and electrophilic activation of alcohols using a unified boron-based organocatalyst scaffold. Nat Commun 2023; 14:2563. [PMID: 37142592 PMCID: PMC10160031 DOI: 10.1038/s41467-023-38228-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Accepted: 04/18/2023] [Indexed: 05/06/2023] Open
Abstract
Organocatalytic strategies for the direct activation of hydroxy-containing compounds have paled in comparison to those applicable to carbonyl compounds. To this end, boronic acids have emerged as valuable catalysts for the functionalization of hydroxy groups in a mild and selective fashion. Distinct modes of activation in boronic acid-catalyzed transformations are often accomplished by vastly different catalytic species, complicating the design of broadly applicable catalyst classes. Herein, we report the use of benzoxazaborine as a general scaffold for the development of structurally related yet mechanistically divergent catalysts for the direct nucleophilic and electrophilic activation of alcohols under ambient conditions. The utility of these catalysts is demonstrated in the monophosphorylation of vicinal diols and the reductive deoxygenation of benzylic alcohols and ketones respectively. Mechanistic studies of both processes reveal the contrasting nature of key tetravalent boron intermediates in the two catalytic manifolds.
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Affiliation(s)
- Jason P G Rygus
- Department of Chemistry, Centennial Center for Interdisciplinary Science, University of Alberta, Edmonton, AB, T6G 2G2, Canada
| | - Dennis G Hall
- Department of Chemistry, Centennial Center for Interdisciplinary Science, University of Alberta, Edmonton, AB, T6G 2G2, Canada.
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9
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Williams OP, Chmiel AF, Mikhael M, Bates DM, Yeung CS, Wickens ZK. Practical and General Alcohol Deoxygenation Protocol. Angew Chem Int Ed Engl 2023; 62:e202300178. [PMID: 36840940 PMCID: PMC10121858 DOI: 10.1002/anie.202300178] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 02/23/2023] [Accepted: 02/23/2023] [Indexed: 02/26/2023]
Abstract
Herein, we describe a practical protocol for the removal of alcohol functional groups through reductive cleavage of their benzoate ester analogs. This transformation requires a strong single electron transfer (SET) reductant and a means to accelerate slow fragmentation following substrate reduction. To accomplish this, we developed a photocatalytic system that generates a potent reductant from formate salts alongside Brønsted or Lewis acids that promote fragmentation of the reduced intermediate. This deoxygenation procedure is effective across structurally and electronically diverse alcohols and enables a variety of difficult net transformations. This protocol requires no precautions to exclude air or moisture and remains efficient on multigram scale. Finally, the system can be adapted to a one-pot benzoylation-deoxygenation sequence to enable direct alcohol deletion. Mechanistic studies validate that the role of acidic additives is to promote the key C(sp3 )-O bond fragmentation step.
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Affiliation(s)
- Oliver P. Williams
- Department of Chemistry, University of Wisconsin-Madison; Madison, Wisconsin, 53706, United States
| | - Alyah F. Chmiel
- Department of Chemistry, University of Wisconsin-Madison; Madison, Wisconsin, 53706, United States
| | - Myriam Mikhael
- Discovery Chemistry, Merck & Co., Inc., 33 Avenue Louis Pasteur, Boston, MA 02115, United States
| | - Desiree M. Bates
- Department of Chemistry, University of Wisconsin-Madison; Madison, Wisconsin, 53706, United States
| | - Charles S. Yeung
- Discovery Chemistry, Merck & Co., Inc., 33 Avenue Louis Pasteur, Boston, MA 02115, United States
| | - Zachary K. Wickens
- Department of Chemistry, University of Wisconsin-Madison; Madison, Wisconsin, 53706, United States
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10
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Gennaiou K, Kelesidis A, Kourgiantaki M, Zografos AL. Combining the best of both worlds: radical-based divergent total synthesis. Beilstein J Org Chem 2023; 19:1-26. [PMID: 36686041 PMCID: PMC9830495 DOI: 10.3762/bjoc.19.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Accepted: 11/30/2022] [Indexed: 01/04/2023] Open
Abstract
A mature science, combining the art of the total synthesis of complex natural structures and the practicality of delivering highly diverged lead compounds for biological screening, is the constant aim of the organic chemistry community. Delivering natural lead compounds became easier during the last two decades, with the evolution of green chemistry and the concepts of atom economy and protecting-group-free synthesis dominating the field of total synthesis. In this new era, total synthesis is moving towards natural efficacy by utilizing both the biosynthetic knowledge of divergent synthesis and the latest developments in radical chemistry. This contemporary review highlights recent total syntheses that incorporate the best of both worlds.
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Affiliation(s)
- Kyriaki Gennaiou
- Aristotle University of Thessaloniki, Department of Chemistry, Laboratory of Organic Chemistry, Thessaloniki, 54124, Greece
| | - Antonios Kelesidis
- Aristotle University of Thessaloniki, Department of Chemistry, Laboratory of Organic Chemistry, Thessaloniki, 54124, Greece
| | - Maria Kourgiantaki
- Aristotle University of Thessaloniki, Department of Chemistry, Laboratory of Organic Chemistry, Thessaloniki, 54124, Greece
| | - Alexandros L Zografos
- Aristotle University of Thessaloniki, Department of Chemistry, Laboratory of Organic Chemistry, Thessaloniki, 54124, Greece
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11
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Spaller W, Lu J, Stokes B. Tetrahydroxydiboron‐Mediated Palladium‐Catalyzed Deoxygenative Transfer Hydrogenation of Aryl Ketones. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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12
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Romano C, Talavera L, Gómez-Bengoa E, Martin R. Conformational Flexibility as a Tool for Enabling Site-Selective Functionalization of Unactivated sp3 C-O Bonds in Cyclic Acetals. J Am Chem Soc 2022; 144:11558-11563. [PMID: 35749319 PMCID: PMC9264358 DOI: 10.1021/jacs.2c04513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
![]()
A dual catalytic
manifold that enables site-selective functionalization
of unactivated sp3 C–O
bonds in cyclic acetals with aryl and alkyl halides is reported. The
reaction is triggered by an appropriate σ*–p orbital
overlap prior to sp3 C–O
cleavage, thus highlighting the importance of conformational flexibility
in both reactivity and site selectivity. The protocol is characterized
by its excellent chemoselectivity profile, thus offering new vistas
for activating strong σ sp3 C–O linkages.
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Affiliation(s)
- Ciro Romano
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain
| | - Laura Talavera
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain.,Departament de Química Analítica i Química Orgànica, Universitat Rovira i Virgili, c/Marcel·lí Domingo, 1, 43007 Tarragona, Spain
| | - Enrique Gómez-Bengoa
- Department of Organic Chemistry I, Universidad País Vasco, UPV/EHU, Apdo. 1072, 20080, San Sebastian, Spain
| | - Ruben Martin
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain.,ICREA, Passeig Lluís Companys, 23, 08010 Barcelona, Spain
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13
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Peng TY, Xu ZY, Zhang FL, Li B, Xu WP, Fu Y, Wang YF. Dehydroxylative Alkylation of α-Hydroxy Carboxylic Acid Derivatives via a Spin-Center Shift. Angew Chem Int Ed Engl 2022; 61:e202201329. [PMID: 35388555 DOI: 10.1002/anie.202201329] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Indexed: 11/05/2022]
Abstract
A strategically distinct dehydroxylative alkylation reaction of α-hydroxy carboxylic acid derivatives with alkenes is developed. The reaction starts with the attack of a 4-dimethylaminopyridine (DMAP)-boryl radical to the carbonyl oxygen atom, followed by a spin-center shift (SCS) to trigger the C-O bond scission. The resulting α-carbonyl radicals couple with a wide range of alkenes to furnish various alkylated products. This strategy allows for the efficient conversion of a wide array of α-hydroxy amides and esters derived from several biomass molecules and natural products to value-added compounds. Experimental and computational studies verified the reaction mechanism.
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Affiliation(s)
- Tian-Yu Peng
- CAS Key Laboratory of Urban Pollutant Conversion, Anhui Province Key Laboratory of Biomass Clean Energy, Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui, 230026, China
| | - Zhe-Yuan Xu
- CAS Key Laboratory of Urban Pollutant Conversion, Anhui Province Key Laboratory of Biomass Clean Energy, Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui, 230026, China
| | - Feng-Lian Zhang
- CAS Key Laboratory of Urban Pollutant Conversion, Anhui Province Key Laboratory of Biomass Clean Energy, Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui, 230026, China
| | - Bin Li
- CAS Key Laboratory of Urban Pollutant Conversion, Anhui Province Key Laboratory of Biomass Clean Energy, Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui, 230026, China
| | - Wen-Ping Xu
- CAS Key Laboratory of Urban Pollutant Conversion, Anhui Province Key Laboratory of Biomass Clean Energy, Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui, 230026, China
| | - Yao Fu
- CAS Key Laboratory of Urban Pollutant Conversion, Anhui Province Key Laboratory of Biomass Clean Energy, Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui, 230026, China
| | - Yi-Feng Wang
- CAS Key Laboratory of Urban Pollutant Conversion, Anhui Province Key Laboratory of Biomass Clean Energy, Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui, 230026, China.,State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin, 300071, China
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14
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Peng TY, Xu ZY, Zhang FL, Li B, Xu WP, Fu Y, Wang YF. Dehydroxylative Alkylation of α‐Hydroxy Carboxylic Acids Derivatives via Spin‐center Shift. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202201329] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Tian-Yu Peng
- University of Science and Technology of China Department of Chemistry CHINA
| | - Zhe-Yuan Xu
- University of Science and Technology of China Department of Chemistry CHINA
| | - Feng-Lian Zhang
- University of Science and Technology of China Department of Chemistry CHINA
| | - Bin Li
- University of Science and Technology of China Department of Chemistry CHINA
| | - Wen-Ping Xu
- University of Science and Technology of China Department of Chemistry CHINA
| | - Yao Fu
- University of Science and Technology of China Department of Chemistry CHINA
| | - Yi-Feng Wang
- University of Science and Technology of China Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry 96 Jinzhai Road 230026 Hefei CHINA
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15
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Xu C, Wu H, Zhang Z, Zheng B, Zhai J, Zhang K, Wu W, Mei X, He M, Han B. Highly Effective and Chemoselective Hydrodeoxygenation of Aromatic Alcohols. Chem Sci 2022; 13:1629-1635. [PMID: 35282624 PMCID: PMC8827088 DOI: 10.1039/d1sc06430d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Accepted: 01/19/2022] [Indexed: 11/21/2022] Open
Abstract
Effective hydrodeoxygenation (HDO) of aromatic alcohols is very attractive in both conventional organic synthesis and upgrading of biomass-derived molecules, but the selectivity of this reaction is usually low because of...
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Affiliation(s)
- Caiyun Xu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University Shanghai 200062 China
| | - Haihong Wu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University Shanghai 200062 China
| | - Zhanrong Zhang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Colloid and Interface and Thermodynamics, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences Beijing 100190 China
| | - Bingxiao Zheng
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University Shanghai 200062 China
| | - Jianxin Zhai
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University Shanghai 200062 China
| | - Kaili Zhang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University Shanghai 200062 China
| | - Wei Wu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University Shanghai 200062 China
| | - Xuelei Mei
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University Shanghai 200062 China
| | - Mingyuan He
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University Shanghai 200062 China
| | - Buxing Han
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University Shanghai 200062 China
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Colloid and Interface and Thermodynamics, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences Beijing 100190 China
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16
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Wang T, Chen Y, Chen N, Xu J, Yang Z. Iridium-catalyzed highly stereoselective deoxygenation of tertiary cycloalkanols: stereoelectronic insights and synthetic applications. Org Biomol Chem 2021; 19:9004-9011. [PMID: 34607335 DOI: 10.1039/d1ob01690c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Excellent and unique diastereoselectivity is observed in the iridium-catalyzed deoxygenation of tertiary cyclohexanols and cyclopentanols. The substituent effect on the diastereoselectivity and detailed control models are analyzed case by case, using tertiary monocyclic and polycyclic cyclohexanols, bicyclic bridged cycloalkanols, and cyclopentanols as the model substrates. The selectivity is decided by the steric environment of the carbocation intermediates and is independent of the catalyst loading. Stereoelectronically, the iridium hydride approaches the carbocation in directions perpendicular to the carbocation plane. The sterically large iridium hydride delivers its hydride in the sterically least hindered direction to the carbocation. The deoxygenation has found important applications in the stereospecific arylations of sterically complex compounds. Our deoxygenation is stereochemically very different from the coupling reactions and can be used to specifically synthesize stereoisomers that are not available via cross-couplings.
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Affiliation(s)
- Tingting Wang
- Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P. R. China.
| | - Yang Chen
- Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P. R. China.
| | - Ning Chen
- Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P. R. China.
| | - Jiaxi Xu
- Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P. R. China.
| | - Zhanhui Yang
- Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P. R. China.
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17
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Cook A, MacLean H, St. Onge P, Newman SG. Nickel-Catalyzed Reductive Deoxygenation of Diverse C–O Bond-Bearing Functional Groups. ACS Catal 2021. [DOI: 10.1021/acscatal.1c03980] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Adam Cook
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa, 10 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
| | - Haydn MacLean
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa, 10 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
| | - Piers St. Onge
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa, 10 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
| | - Stephen G. Newman
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa, 10 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
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18
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Chang L, An Q, Duan L, Feng K, Zuo Z. Alkoxy Radicals See the Light: New Paradigms of Photochemical Synthesis. Chem Rev 2021; 122:2429-2486. [PMID: 34613698 DOI: 10.1021/acs.chemrev.1c00256] [Citation(s) in RCA: 121] [Impact Index Per Article: 40.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Alkoxy radicals are highly reactive species that have long been recognized as versatile intermediates in organic synthesis. However, their development has long been impeded due to a lack of convenient methods for their generation. Thanks to advances in photoredox catalysis, enabling facile access to alkoxy radicals from bench-stable precursors and free alcohols under mild conditions, research interest in this field has been renewed. This review comprehensively summarizes the recent progress in alkoxy radical-mediated transformations under visible light irradiation. Elementary steps for alkoxy radical generation from either radical precursors or free alcohols are central to reaction development; thus, each section is categorized and discussed accordingly. Throughout this review, we have focused on the different mechanisms of alkoxy radical generation as well as their impact on synthetic utilizations. Notably, the catalytic generation of alkoxy radicals from abundant alcohols is still in the early stage, providing intriguing opportunities to exploit alkoxy radicals for diverse synthetic paradigms.
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Affiliation(s)
- Liang Chang
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 200032 Shanghai, China.,School of Pharmacy, Nanjing University of Chinese Medicine, 210023 Nanjing, China
| | - Qing An
- School of Physical Science and Technology, ShanghaiTech University, 201210 Shanghai, China
| | - Lingfei Duan
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 200032 Shanghai, China
| | - Kaixuan Feng
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 200032 Shanghai, China
| | - Zhiwei Zuo
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 200032 Shanghai, China
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19
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Beil SB. Accessing aliphatic alcohols for metallaphotoredox catalyzed C(sp3)-arylation. Chem 2021. [DOI: 10.1016/j.chempr.2021.09.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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20
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Selective deoxygenative alkylation of alcohols via photocatalytic domino radical fragmentations. Nat Commun 2021; 12:5365. [PMID: 34508098 PMCID: PMC8433232 DOI: 10.1038/s41467-021-25702-4] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Accepted: 08/26/2021] [Indexed: 11/29/2022] Open
Abstract
The delivery of alkyl radicals through photocatalytic deoxygenation of primary alcohols under mild conditions is a so far unmet challenge. In this report, we present a one-pot strategy for deoxygenative Giese reaction of alcohols with electron-deficient alkenes, by using xanthate salts as alcohol-activating groups for radical generation under visible-light photoredox conditions in the presence of triphenylphosphine. The convenient generation of xanthate salts and high reactivity of sequential C–S/C–O bond homolytic cleavage enable efficient deoxygenation of primary, secondary and tertiary alcohols with diverse functionality and structure to generate the corresponding alkyl radicals, including methyl radical. Moreover, chemoselective radical monodeoxygenation of diols is achieved via selective formation of xanthate salts. The generation of alkyl radicals through deoxygenation of abundant alcohols via photoredox catalysis is of interest. In this study, the authors report a one-pot strategy for visible-light-promoted photoredox coupling of alcohols with electron-deficient alkenes, assisted by carbon disulfide and triphenylphosphine.
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21
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Dong Z, MacMillan DWC. Metallaphotoredox-enabled deoxygenative arylation of alcohols. Nature 2021; 598:451-456. [PMID: 34464959 DOI: 10.1038/s41586-021-03920-6] [Citation(s) in RCA: 135] [Impact Index Per Article: 45.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Accepted: 08/17/2021] [Indexed: 11/09/2022]
Abstract
Metal-catalysed cross-couplings are a mainstay of organic synthesis and are widely used for the formation of C-C bonds, particularly in the production of unsaturated scaffolds1. However, alkyl cross-couplings using native sp3-hybridized functional groups such as alcohols remain relatively underdeveloped2. In particular, a robust and general method for the direct deoxygenative coupling of alcohols would have major implications for the field of organic synthesis. A general method for the direct deoxygenative cross-coupling of free alcohols must overcome several challenges, most notably the in situ cleavage of strong C-O bonds3, but would allow access to the vast collection of commercially available, structurally diverse alcohols as coupling partners4. We report herein a metallaphotoredox-based cross-coupling platform in which free alcohols are activated in situ by N-heterocyclic carbene salts for carbon-carbon bond formation with aryl halide coupling partners. This method is mild, robust, selective and most importantly, capable of accommodating a wide range of primary, secondary and tertiary alcohols as well as pharmaceutically relevant aryl and heteroaryl bromides and chlorides. The power of the transformation has been demonstrated in a number of complex settings, including the late-stage functionalization of Taxol and a modular synthesis of Januvia, an antidiabetic medication. This technology represents a general strategy for the merger of in situ alcohol activation with transition metal catalysis.
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Affiliation(s)
- Zhe Dong
- Merck Center for Catalysis at Princeton University, Princeton, NJ, USA
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22
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Cong F, Lv XY, Day CS, Martin R. Dual Catalytic Strategy for Forging sp2–sp3 and sp3–sp3 Architectures via β-Scission of Aliphatic Alcohol Derivatives. J Am Chem Soc 2020; 142:20594-20599. [DOI: 10.1021/jacs.0c11172] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Fei Cong
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Avenida Països Catalans 16, 43007 Tarragona, Spain
- Departament de Química Analítica i Química Orgànica, Universitat Rovira i Virgili, c/Marcel·lí Domingo 1, 43007 Tarragona, Spain
| | - Xin-Yang Lv
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Avenida Països Catalans 16, 43007 Tarragona, Spain
- Departament de Química Analítica i Química Orgànica, Universitat Rovira i Virgili, c/Marcel·lí Domingo 1, 43007 Tarragona, Spain
| | - Craig S. Day
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Avenida Països Catalans 16, 43007 Tarragona, Spain
- Departament de Química Analítica i Química Orgànica, Universitat Rovira i Virgili, c/Marcel·lí Domingo 1, 43007 Tarragona, Spain
| | - Ruben Martin
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Avenida Països Catalans 16, 43007 Tarragona, Spain
- ICREA, Passeig Lluís Companys, 23, 08010 Barcelona, Spain
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23
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Miele M, Citarella A, Langer T, Urban E, Zehl M, Holzer W, Ielo L, Pace V. Chemoselective Homologation-Deoxygenation Strategy Enabling the Direct Conversion of Carbonyls into ( n+1)-Halomethyl-Alkanes. Org Lett 2020; 22:7629-7634. [PMID: 32910659 PMCID: PMC8011987 DOI: 10.1021/acs.orglett.0c02831] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
![]()
The sequential installation
of a carbenoid and a hydride into a
carbonyl, furnishing halomethyl alkyl derivatives, is reported. Despite
the employment of carbenoids as nucleophiles in reactions with carbon-centered
electrophiles, sp3-type alkyl halides remain elusive materials
for selective one-carbon homologations. Our tactic levers on using
carbonyls as starting materials and enables uniformly high yields
and chemocontrol. The tactic is flexible and is not limited to carbenoids.
Also, diverse carbanion-like species can act as nucleophiles, thus
making it of general applicability.
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Affiliation(s)
- Margherita Miele
- Department of Pharmaceutical Chemistry, University of Vienna, Althanstrasse, 14, 1090 Vienna, Austria
| | - Andrea Citarella
- Department of Pharmaceutical Chemistry, University of Vienna, Althanstrasse, 14, 1090 Vienna, Austria.,Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale F. Stagno D'Alcontres, 31, 98166 Messina, Italy
| | - Thierry Langer
- Department of Pharmaceutical Chemistry, University of Vienna, Althanstrasse, 14, 1090 Vienna, Austria
| | - Ernst Urban
- Department of Pharmaceutical Chemistry, University of Vienna, Althanstrasse, 14, 1090 Vienna, Austria
| | - Martin Zehl
- Faculty of Chemistry - Department of Analytical Chemistry, University of Vienna, Währinger Straße 38, 1090 Vienna, Austria
| | - Wolfgang Holzer
- Department of Pharmaceutical Chemistry, University of Vienna, Althanstrasse, 14, 1090 Vienna, Austria
| | - Laura Ielo
- Department of Pharmaceutical Chemistry, University of Vienna, Althanstrasse, 14, 1090 Vienna, Austria
| | - Vittorio Pace
- Department of Pharmaceutical Chemistry, University of Vienna, Althanstrasse, 14, 1090 Vienna, Austria.,Department of Chemistry, University of Turin, Via P. Giuria 7, 10125 Turin, Italy
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24
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Zhang J, Yang JD, Cheng JP. Diazaphosphinyl radical-catalyzed deoxygenation of α-carboxy ketones: a new protocol for chemo-selective C-O bond scission via mechanism regulation. Chem Sci 2020; 11:8476-8481. [PMID: 34123107 PMCID: PMC8163385 DOI: 10.1039/d0sc03220d] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Accepted: 07/27/2020] [Indexed: 11/22/2022] Open
Abstract
C-O bond cleavage is often a key process in defunctionalization of organic compounds as well as in degradation of natural polymers. However, it seldom occurs regioselectively for different types of C-O bonds under metal-free mild conditions. Here we report a facile chemo-selective cleavage of the α-C-O bonds in α-carboxy ketones by commercially available pinacolborane under the catalysis of diazaphosphinane based on a mechanism switch strategy. This new reaction features high efficiency, low cost and good group-tolerance, and is also amenable to catalytic deprotection of desyl-protected carboxylic acids and amino acids. Mechanistic studies indicated an electron-transfer-initiated radical process, underlining two crucial steps: (1) the initiator azodiisobutyronitrile switches originally hydridic reduction to kinetically more accessible electron reduction; and (2) the catalytic phosphorus species upconverts weakly reducing pinacolborane into strongly reducing diazaphosphinane.
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Affiliation(s)
- Jingjing Zhang
- Department of Chemistry, Center of Basic Molecular Science, Tsinghua University Beijing 100084 China
| | - Jin-Dong Yang
- Department of Chemistry, Center of Basic Molecular Science, Tsinghua University Beijing 100084 China
| | - Jin-Pei Cheng
- Department of Chemistry, Center of Basic Molecular Science, Tsinghua University Beijing 100084 China
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University Tianjin 300071 China
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25
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Fang H, Oestreich M. Reduktive Desaminierung mit Hydrosilanen katalysiert durch B(C
6
F
5
)
3. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202004651] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Huaquan Fang
- Institut für Chemie Technische Universität Berlin Straße des 17. Juni 115 10623 Berlin Deutschland
| | - Martin Oestreich
- Institut für Chemie Technische Universität Berlin Straße des 17. Juni 115 10623 Berlin Deutschland
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26
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Fang H, Oestreich M. Reductive Deamination with Hydrosilanes Catalyzed by B(C 6 F 5 ) 3. Angew Chem Int Ed Engl 2020; 59:11394-11398. [PMID: 32311213 PMCID: PMC7384015 DOI: 10.1002/anie.202004651] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 04/19/2020] [Indexed: 11/29/2022]
Abstract
The strong boron Lewis acid tris(pentafluorophenyl)borane B(C6 F5 )3 is known to catalyze the dehydrogenative coupling of certain amines and hydrosilanes at elevated temperatures. At higher temperature, the dehydrogenation pathway competes with cleavage of the C-N bond and defunctionalization is obtained. This can be turned into a useful methodology for the transition-metal-free reductive deamination of a broad range of amines as well as heterocumulenes such as an isocyanate and an isothiocyanate.
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Affiliation(s)
- Huaquan Fang
- Institut für ChemieTechnische Universität BerlinStrasse des 17. Juni 11510623BerlinGermany
| | - Martin Oestreich
- Institut für ChemieTechnische Universität BerlinStrasse des 17. Juni 11510623BerlinGermany
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27
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Ding H, Sakata K, Kuriyama S, Nishibayashi Y. Ruthenium-Catalyzed Propargylic Reduction of Propargylic Alcohols with Hantzsch Ester. Organometallics 2020. [DOI: 10.1021/acs.organomet.0c00187] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Haowei Ding
- Department of Systems Innovation, School of Engineering, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Ken Sakata
- Faculty of Pharmaceutical Sciences, Toho University Miyama, Funabashi, Chiba 274-8510, Japan
| | - Shogo Kuriyama
- Department of Systems Innovation, School of Engineering, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Yoshiaki Nishibayashi
- Department of Systems Innovation, School of Engineering, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
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28
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Fast CD, Jones CAH, Schley ND. Selectivity and Mechanism of Iridium-Catalyzed Cyclohexyl Methyl Ether Cleavage. ACS Catal 2020. [DOI: 10.1021/acscatal.0c01718] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Caleb D. Fast
- Department of Chemistry, Vanderbilt University, Nashville, Tennessee 27235 United States
| | - Caleb A. H. Jones
- Department of Chemistry, Vanderbilt University, Nashville, Tennessee 27235 United States
| | - Nathan D. Schley
- Department of Chemistry, Vanderbilt University, Nashville, Tennessee 27235 United States
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29
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Sandeep, Venugopalan P, Kumar A. Metal Free, Direct and Selective Deoxygenation of α-Hydroxy Carbonyl Compounds: Access to α,α-Diaryl Carbonyl Compounds. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000142] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Sandeep
- Department of Applied Sciences; University Institute of Engineering and Technology; Panjab University; 160014 Chandigarh India
- Department of Chemistry; University Institute of Engineering and Technology; Panjab University; 160014 Chandigarh India
| | - Paloth Venugopalan
- Department of Chemistry; University Institute of Engineering and Technology; Panjab University; 160014 Chandigarh India
| | - Anil Kumar
- Department of Applied Sciences; University Institute of Engineering and Technology; Panjab University; 160014 Chandigarh India
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30
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Bian Y, Qu X, Chan KS. Base-Promoted C–O Bond Cleavage of Primary Alcohols by Iridium(III) Porphyrin Chloride. Organometallics 2020. [DOI: 10.1021/acs.organomet.0c00100] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yongjun Bian
- College of Chemistry and Chemical Engineering, Jinzhong University, Yuci 030619, People’s Republic of China
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, People’s Republic of China
| | - Xingyu Qu
- College of Chemistry and Chemical Engineering, Jinzhong University, Yuci 030619, People’s Republic of China
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, People’s Republic of China
| | - Kin Shing Chan
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, People’s Republic of China
- School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210046, People’s Republic of China
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31
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Yang B, Wang ZX. Nickel-Catalyzed Alkylation or Reduction of Allylic Alcohols with Alkyl Grignard Reagents. J Org Chem 2020; 85:4772-4784. [DOI: 10.1021/acs.joc.0c00008] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Bo Yang
- CAS Key Laboratory of Soft Matter Chemistry and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Zhong-Xia Wang
- CAS Key Laboratory of Soft Matter Chemistry and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, P. R. China
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32
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Hu XQ, Hou YX, Liu ZK, Gao Y. Recent advances in phosphoranyl radical-mediated deoxygenative functionalisation. Org Chem Front 2020. [DOI: 10.1039/d0qo00643b] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Alcohols and carboxylic acids have been established as versatile building blocks in the assembly of various carbon frameworks.
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Affiliation(s)
- Xiao-Qiang Hu
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science
- School of Chemistry and Materials Science
- South-Central University for Nationalities
- Wuhan 430074
- China
| | - Ye-Xing Hou
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science
- School of Chemistry and Materials Science
- South-Central University for Nationalities
- Wuhan 430074
- China
| | - Zi-Kui Liu
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science
- School of Chemistry and Materials Science
- South-Central University for Nationalities
- Wuhan 430074
- China
| | - Yang Gao
- School of Chemical Engineering and Light Industry
- Guangdong University of Technology
- Guangzhou
- China
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33
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Chen Y. Advances in the Synthesis of Methylated Products through Indirect Approaches. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201901240] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Yantao Chen
- Medicinal Chemistry, Research and Early DevelopmentCardiovascular, Renal and Metabolism, BioPharmaceuticals R&D, AstraZeneca 43183 Gothenburg Sweden
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34
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Schwob T, Kunnas P, de Jonge N, Papp C, Steinrück HP, Kempe R. General and selective deoxygenation by hydrogen using a reusable earth-abundant metal catalyst. SCIENCE ADVANCES 2019; 5:eaav3680. [PMID: 31763445 PMCID: PMC6858257 DOI: 10.1126/sciadv.aav3680] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Accepted: 09/17/2019] [Indexed: 06/10/2023]
Abstract
Chemoselective deoxygenation by hydrogen is particularly challenging but crucial for an efficient late-stage modification of functionality-laden fine chemicals, natural products, or pharmaceuticals and the economic upgrading of biomass-derived molecules into fuels and chemicals. We report here on a reusable earth-abundant metal catalyst that permits highly chemoselective deoxygenation using inexpensive hydrogen gas. Primary, secondary, and tertiary alcohols as well as alkyl and aryl ketones and aldehydes can be selectively deoxygenated, even when part of complex natural products, pharmaceuticals, or biomass-derived platform molecules. The catalyst tolerates many functional groups including hydrogenation-sensitive examples. It is efficient, easy to handle, and conveniently synthesized from a specific bimetallic coordination compound and commercially available charcoal. Selective, sustainable, and cost-efficient deoxygenation under industrially viable conditions seems feasible.
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Affiliation(s)
- T. Schwob
- Inorganic Chemistry II–Catalyst Design, University of Bayreuth, 95440 Bayreuth, Germany
| | - P. Kunnas
- INM–Leibniz Institute for New Materials, Campus D2 2, 66123 Saarbrücken, Germany
| | - N. de Jonge
- INM–Leibniz Institute for New Materials, Campus D2 2, 66123 Saarbrücken, Germany
- Department of Physics, Saarland University, Campus A5 1, 66123 Saarbrücken, Germany
| | - C. Papp
- Physical Chemistry II, Department of Chemistry and Pharmacy, 91058 Erlangen, Germany
| | - H.-P. Steinrück
- Physical Chemistry II, Department of Chemistry and Pharmacy, 91058 Erlangen, Germany
| | - R. Kempe
- Inorganic Chemistry II–Catalyst Design, University of Bayreuth, 95440 Bayreuth, Germany
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35
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Bian Y, Tam CM, To CT, Qu X, Chan KS. Alkylation of Rhodium Porphyrin Complexes with Primary Alcohols under Basic Conditions. Organometallics 2019. [DOI: 10.1021/acs.organomet.9b00454] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Yongjun Bian
- Department of Chemistry, The Chinese University of Hong Kong, Shatin 00, New Territories, Hong Kong, People’s Republic of China
| | - Chun Meng Tam
- Department of Chemistry, The Chinese University of Hong Kong, Shatin 00, New Territories, Hong Kong, People’s Republic of China
| | - Ching Tat To
- Department of Chemistry, The Chinese University of Hong Kong, Shatin 00, New Territories, Hong Kong, People’s Republic of China
| | - Xingyu Qu
- Department of Chemistry, The Chinese University of Hong Kong, Shatin 00, New Territories, Hong Kong, People’s Republic of China
| | - Kin Shing Chan
- Department of Chemistry, The Chinese University of Hong Kong, Shatin 00, New Territories, Hong Kong, People’s Republic of China
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36
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Pichon MM, Hazelard D, Compain P. Metal-Free Deoxygenation of α-Hydroxy Carbonyl Compounds and Beyond. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900838] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Maëva M. Pichon
- Laboratoire d′Innovation Moléculaire et Applications (LIMA); Univ. de Strasbourg; Univ. de Haute-Alsace, CNRS (UMR 7042) Equipe de Synthèse Organique et Molécules Bioactives (SYBIO), ECPM; 25 Rue Becquerel 67000 Strasbourg France
| | - Damien Hazelard
- Laboratoire d′Innovation Moléculaire et Applications (LIMA); Univ. de Strasbourg; Univ. de Haute-Alsace, CNRS (UMR 7042) Equipe de Synthèse Organique et Molécules Bioactives (SYBIO), ECPM; 25 Rue Becquerel 67000 Strasbourg France
| | - Philippe Compain
- Laboratoire d′Innovation Moléculaire et Applications (LIMA); Univ. de Strasbourg; Univ. de Haute-Alsace, CNRS (UMR 7042) Equipe de Synthèse Organique et Molécules Bioactives (SYBIO), ECPM; 25 Rue Becquerel 67000 Strasbourg France
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37
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Matt C, Kölblin F, Streuff J. Reductive C–O, C–N, and C–S Cleavage by a Zirconium Catalyzed Hydrometalation/β-Elimination Approach. Org Lett 2019; 21:6983-6988. [DOI: 10.1021/acs.orglett.9b02572] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Christof Matt
- Albert-Ludwigs-Universität Freiburg, Institut für Organische Chemie, Albertstr. 21, 79104 Freiburg, Germany
| | - Frederic Kölblin
- Albert-Ludwigs-Universität Freiburg, Institut für Organische Chemie, Albertstr. 21, 79104 Freiburg, Germany
| | - Jan Streuff
- Albert-Ludwigs-Universität Freiburg, Institut für Organische Chemie, Albertstr. 21, 79104 Freiburg, Germany
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38
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Park S. Catalytic Reduction of Cyclic Ethers with Hydrosilanes. Chem Asian J 2019; 14:2048-2066. [DOI: 10.1002/asia.201900330] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Indexed: 11/07/2022]
Affiliation(s)
- Sehoon Park
- Guangdong Technion Israel Institute of Technology 241 Daxue Road Shantou Guangdong Province 515603 P.R. China
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39
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Isomura M, Petrone DA, Carreira EM. Coordination-Induced Stereocontrol over Carbocations: Asymmetric Reductive Deoxygenation of Racemic Tertiary Alcohols. J Am Chem Soc 2019; 141:4738-4748. [DOI: 10.1021/jacs.9b00862] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Mayuko Isomura
- ETH Zürich, Vladimir-Prelog-Weg 3, HCI, 8093 Zürich, Switzerland
| | - David A. Petrone
- ETH Zürich, Vladimir-Prelog-Weg 3, HCI, 8093 Zürich, Switzerland
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40
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Stache EE, Ertel AB, Rovis T, Doyle AG. Generation of Phosphoranyl Radicals via Photoredox Catalysis Enables Voltage-Independent Activation of Strong C-O Bonds. ACS Catal 2018; 8:11134-11139. [PMID: 31367474 DOI: 10.1021/acscatal.8b03592] [Citation(s) in RCA: 166] [Impact Index Per Article: 27.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Despite the prevalence of alcohols and carboxylic acids as functional groups in organic molecules and the potential to serve as radical precursors, C-O bonds remain difficult to activate. We report a synthetic strategy for direct access to both alkyl and acyl radicals from these ubiquitous functional groups via photoredox catalysis. This method exploits the unique reactivity of phosphoranyl radicals, generated from a polar/SET crossover between a phosphine radical cation and an oxygen-centered nucleophile. We show the desired reactivity in the reduction of benzylic alcohols to the corresponding benzyl radicals with terminal H atom trapping to afford the deoxygenated products. Using the same method, we demonstrate access to synthetically versatile acyl radicals, which enables the reduction of aromatic and aliphatic carboxylic acids to the corresponding aldehydes with exceptional chemoselectivity. This protocol also transforms carboxylic acids to heterocycles and cyclic ketones via intramolecular acyl radical cyclizations to forge C-O, C-N, and C-C bonds in a single step.
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Affiliation(s)
- Erin E. Stache
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
- Department of Chemistry and Chemical Biology, Cornell University, Baker Lab, Ithaca, New York 14853, United States
| | - Alyssa B. Ertel
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
| | - Tomislav Rovis
- Department of Chemistry, Columbia University, New York, New York 10027, United States
| | - Abigail G. Doyle
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
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41
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Yang W, Chen C, Chan KS. Hydrodebromination of allylic and benzylic bromides with water catalyzed by a rhodium porphyrin complex. Dalton Trans 2018; 47:12879-12883. [PMID: 30168570 DOI: 10.1039/c8dt02168f] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Hydrodebromination of allylic and benzylic bromides was successfully achieved by a rhodium porphyrin complex catalyst using water as the hydrogen source without a sacrificial reductant. Mechanistic investigations suggest that bromine atom abstraction via a rhodium porphyrin metalloradical operates to give the rhodium porphyrin alkyl species and the subsequent hydrolysis of the rhodium porphyrin alkyl species to a hydrocarbon product is a key step to harness the hydrogen from water.
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Affiliation(s)
- Wu Yang
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, People's Republic of China.
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42
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Yang S, Tang W, Yang Z, Xu J. Iridium-Catalyzed Highly Efficient and Site-Selective Deoxygenation of Alcohols. ACS Catal 2018. [DOI: 10.1021/acscatal.8b02495] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Shiyi Yang
- State Key Laboratory of Chemical Resource Engineering, College of Science, Beijing University of Chemical Technology, Beijing 100029, People’s Republic of China
| | - Weiping Tang
- School of Pharmacy, University of Wisconsin—Madison, 777 Highland Avenue, Madison, Wisconsin 53705, United States
- Department of Chemistry, University of Wisconsin—Madison, Madison, Wisconsin 53706, United States
| | - Zhanhui Yang
- State Key Laboratory of Chemical Resource Engineering, College of Science, Beijing University of Chemical Technology, Beijing 100029, People’s Republic of China
| | - Jiaxi Xu
- State Key Laboratory of Chemical Resource Engineering, College of Science, Beijing University of Chemical Technology, Beijing 100029, People’s Republic of China
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43
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Affiliation(s)
- Masahiro Sai
- Research Foundation ITSUU Laboratory; C1232 Kanagawa Science Park R & D Building, 3-2-1 Sakado, Takatsu-ku, Kawasaki Kanagawa 213-0012 Japan
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44
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Lowe JM, Seo Y, Gagné MR. Boron-Catalyzed Site-Selective Reduction of Carbohydrate Derivatives with Catecholborane. ACS Catal 2018. [DOI: 10.1021/acscatal.8b02337] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jared M. Lowe
- Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Youngran Seo
- Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Michel R. Gagné
- Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
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45
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Ciszek B, Fleischer I. Homogeneous Palladium-Catalyzed Transfer Hydrogenolysis of Benzylic Alcohols Using Formic Acid as Reductant. Chemistry 2018; 24:12259-12263. [DOI: 10.1002/chem.201801466] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Indexed: 11/07/2022]
Affiliation(s)
- Benjamin Ciszek
- Institute of Organic Chemistry; Eberhard Karls University of Tuebingen; Auf der Morgenstelle 18 72076 Tuebingen Germany
| | - Ivana Fleischer
- Institute of Organic Chemistry; Eberhard Karls University of Tuebingen; Auf der Morgenstelle 18 72076 Tuebingen Germany
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46
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Yang W, Gao L, Lu J, Song Z. Chemoselective deoxygenation of ether-substituted alcohols and carbonyl compounds by B(C 6F 5) 3-catalyzed reduction with (HMe 2SiCH 2) 2. Chem Commun (Camb) 2018; 54:4834-4837. [PMID: 29696246 DOI: 10.1039/c8cc01163j] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
B(C6F5)3-catalyzed deoxygenation of ether-substituted alcohols and carbonyl compounds has been developed using (HMe2SiCH2)2 as the reductant. This unique reagent shows distinct superiority over traditional one silicon-centered hydrosilanes, giving the corresponding alkanes in high yields with good tolerance of ethers, aryl halides and alkenes. The control experiments suggest that (HMe2SiCH2)2 might facilitate the approach in an intramolecular Si/O activation manner.
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Affiliation(s)
- Wenyu Yang
- Sichuan Engineering Laboratory for Plant-Sourced Drug and Research Center for Drug Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China.
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47
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Pichon MM, Stauffert F, Addante-Moya LG, Bodlenner A, Compain P. Metal-Free Iodine-Mediated Deoxygenation of Alcohols in the Position α to Electron-Withdrawing Groups. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800051] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Maëva M. Pichon
- Laboratoire d'Innovation Moléculaire et Applications; Univ. de Strasbourg; Univ. de Haute-Alsace; CNRS; LIMA (UMR 7042); Equipe de Synthèse Organique et Molécules Bioactives (SYBIO); ECPM; 25 Rue Becquerel 67087 Strasbourg France
| | - Fabien Stauffert
- Laboratoire d'Innovation Moléculaire et Applications; Univ. de Strasbourg; Univ. de Haute-Alsace; CNRS; LIMA (UMR 7042); Equipe de Synthèse Organique et Molécules Bioactives (SYBIO); ECPM; 25 Rue Becquerel 67087 Strasbourg France
| | - Luis G. Addante-Moya
- Laboratoire d'Innovation Moléculaire et Applications; Univ. de Strasbourg; Univ. de Haute-Alsace; CNRS; LIMA (UMR 7042); Equipe de Synthèse Organique et Molécules Bioactives (SYBIO); ECPM; 25 Rue Becquerel 67087 Strasbourg France
| | - Anne Bodlenner
- Laboratoire d'Innovation Moléculaire et Applications; Univ. de Strasbourg; Univ. de Haute-Alsace; CNRS; LIMA (UMR 7042); Equipe de Synthèse Organique et Molécules Bioactives (SYBIO); ECPM; 25 Rue Becquerel 67087 Strasbourg France
| | - Philippe Compain
- Laboratoire d'Innovation Moléculaire et Applications; Univ. de Strasbourg; Univ. de Haute-Alsace; CNRS; LIMA (UMR 7042); Equipe de Synthèse Organique et Molécules Bioactives (SYBIO); ECPM; 25 Rue Becquerel 67087 Strasbourg France
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48
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Takada Y, Caner J, Kaliyamoorthy S, Naka H, Saito S. Photocatalytic Transfer Hydrogenolysis of Allylic Alcohols on Pd/TiO 2 : A Shortcut to (S)-(+)-Lavandulol. Chemistry 2017; 23:18025-18032. [PMID: 28972300 DOI: 10.1002/chem.201704099] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Indexed: 11/09/2022]
Abstract
We report herein a regio- and stereoselective photocatalytic hydrogenolysis of allylic alcohols to form unsaturated hydrocarbons employing a palladium(II)-loaded titanium oxide; the reaction proceeds at room temperature under light irradiation without stoichiometric generation of salt wastes. Olefin and saturated alcohol moieties tolerated the reaction conditions. Hydrogen atoms were selectively incorporated into less sterically congested carbons of the allylic functionalities. This protocol allowed a short-step synthesis of (S)-(+)-lavandulol from (R)-(-)-carvone by avoiding otherwise necessary protection/deprotection steps.
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Affiliation(s)
- Yuki Takada
- Graduate School of Science, Nagoya University, Chikusa, Nagoya, 464-8602, Japan
| | - Joaquim Caner
- Research Center for Materials Science, Nagoya University, Chikusa, Nagoya, 464-8602, Japan
| | | | - Hiroshi Naka
- Graduate School of Science, Nagoya University, Chikusa, Nagoya, 464-8602, Japan.,Research Center for Materials Science, Nagoya University, Chikusa, Nagoya, 464-8602, Japan
| | - Susumu Saito
- Graduate School of Science, Nagoya University, Chikusa, Nagoya, 464-8602, Japan.,Research Center for Materials Science, Nagoya University, Chikusa, Nagoya, 464-8602, Japan
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49
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Hanna LE, Harris MR, Domon K, Jarvo ER. Nickel-Catalyzed Hydrogenolysis and Conjugate Addition of 2-(Hydroxymethyl)pyridines via Organozinc Intermediates. Org Lett 2017; 19:6304-6307. [PMID: 29135261 DOI: 10.1021/acs.orglett.7b03049] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
2-Hydroxymethylpyridines undergo nickel-catalyzed hydrogenolysis upon activation with a chlorophosphate. Reactions employ diethylzinc and are proposed to proceed through secondary benzylzinc reagents. Quenching with deuteromethanol provides straightforward incorporation of a deuterium label in the benzylic position. Intramolecular conjugate additions with α,β-unsaturated esters are also demonstrated and support the intermediacy of a benzylzinc complex.
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Affiliation(s)
- Luke E Hanna
- Department of Chemistry, University of California , Irvine, California 92697-2025, United States
| | - Michael R Harris
- Department of Chemistry, University of California , Irvine, California 92697-2025, United States
| | - Kenji Domon
- Department of Chemistry, University of California , Irvine, California 92697-2025, United States
| | - Elizabeth R Jarvo
- Department of Chemistry, University of California , Irvine, California 92697-2025, United States
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50
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Takada Y, Caner J, Naka H, Saito S. Photocatalytic hydrogenolysis of allylic alcohols for rapid access to platform chemicals and fine chemicals. PURE APPL CHEM 2017. [DOI: 10.1515/pac-2017-0501] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
A brief account of our recent work on the chemo-, regio- and stereoselective photocatalytic hydrogenolysis of allylic alcohols to alkenes promoted by palladium-loaded titanium oxide (Pd/TiO2) photocatalysts is presented. Since methanol is employed as the reducing agent, the method does not involve stoichiometric generation of salt waste. The photocatalytic hydrogenolysis proceeds at room temperature, and is compatible with the presence of functional groups such as C=C double bonds and hydroxyl groups at non-allylic positions. The regioselectivity is predictable: the hydrogen atom is predominantly incorporated into the sterically less hindered carbon atom of the allylic moiety. This protocol should provide straightforward green access to a range of platform chemicals (exemplified by the two-step synthesis of propylene from glycerol) and fine chemicals [e.g. (S)-(+)-lavandulol from (R)-(–)-carvone] without the need for protection/deprotection steps.
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Affiliation(s)
- Yuki Takada
- Graduate School of Science , Nagoya University , Chikusa, Nagoya 464-8602 , Japan
| | - Joaquim Caner
- Research Center for Materials Science , Nagoya University , Chikusa, Nagoya 464-8602 , Japan
| | - Hiroshi Naka
- Graduate School of Science , Nagoya University , Chikusa, Nagoya 464-8602 , Japan
- Research Center for Materials Science , Nagoya University , Chikusa, Nagoya 464-8602 , Japan
| | - Susumu Saito
- Graduate School of Science , Nagoya University , Chikusa, Nagoya 464-8602 , Japan
- Research Center for Materials Science , Nagoya University , Chikusa, Nagoya 464-8602 , Japan
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