1
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Huang M, Sun H, Seufert F, Friedrich A, Marder TB, Hu J. Photoredox/Cu-Catalyzed Decarboxylative C(sp 3)-C(sp 3) Coupling to Access C(sp 3)-Rich gem-Diborylalkanes. Angew Chem Int Ed Engl 2024; 63:e202401782. [PMID: 38818649 DOI: 10.1002/anie.202401782] [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: 01/25/2024] [Revised: 05/28/2024] [Accepted: 05/28/2024] [Indexed: 06/01/2024]
Abstract
gem-Diborylalkanes are highly valuable building blocks in organic synthesis and pharmaceutical chemistry due to their ability to participate in multi-step cross-coupling transformations, allowing for the rapid generation of molecular complexity. While progress has been made in their synthetic metholodology, the construction of β-tertiary and C(sp3)-rich gem-diborylalkanes remains a synthetic challenge due to substrate limitations and steric hindrance issues. An approach is presented that utilizes synergistic photoredox and copper catalysis to achieve efficient C(sp3)-C(sp3) cross-coupling of alkyl N-hydroxyphthalimide esters, which can easily be obtained from alkyl carboxylic acids, with diborylmethyl species, providing a series of C(sp3)-rich gem-diborylalkanes with 1°, 2°, and even 3° β positions. Furthermore, this approach can also be applied to complex medicinal compounds and natural products, offering rapid access to molecular complexity and late-stage functionalization of C(sp3)-rich drug candidates. Mechanistic experiments revealed that diborylmethyl Cu(I) species participated in both the photoredox process and the key C(sp3)-C(sp3) bond-forming step.
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Affiliation(s)
- Mingming Huang
- Institut für Anorganische Chemie and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Huaxing Sun
- State Key Laboratory of Organic Electronics and Information Displays & & Institute of Advanced Materials (IAM), College of Chemistry and Life Sciences, Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing, 210023, China
| | - Florian Seufert
- Institut für Anorganische Chemie and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Alexandra Friedrich
- Institut für Anorganische Chemie and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Todd B Marder
- Institut für Anorganische Chemie and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Jiefeng Hu
- State Key Laboratory of Organic Electronics and Information Displays & & Institute of Advanced Materials (IAM), College of Chemistry and Life Sciences, Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing, 210023, China
- Institut für Anorganische Chemie and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
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2
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Charki P, Müller DS. Al(III)-Promoted Formation of All-Carbon Quaternary Centers from Aliphatic Tertiary Chlorides and Alkynyl Silanes. J Org Chem 2024; 89:7324-7329. [PMID: 38712758 DOI: 10.1021/acs.joc.4c00509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/08/2024]
Abstract
Despite the accessibility of numerous alkynes through coupling or substitution reactions, the synthesis of trialkyl-substituted alkynes is still a major challenge. Within this context, we reexplored the electrophilic alkynyl substitution between tertiary aliphatic chlorides and silylated alkynes. We were able to demonstrate that this approach is significantly more general than originally demonstrated by Capozzi and even tolerates several functional groups. Furthermore, we report diastereoselective reactions which in some instances gave excellent diastereoselectivity (dr >95:5).
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Affiliation(s)
- Paul Charki
- Univerity of Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes), UMR 6226, F-35000 Rennes, France
| | - Daniel S Müller
- Univerity of Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes), UMR 6226, F-35000 Rennes, France
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3
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Zhang S, Zhao X, Qin G. Ru-Mg promoted reductive cross-coupling of allyl bromides and alkenes to synthesize 1,7-octadienes with an all-carbon quaternary center. Org Biomol Chem 2024; 22:3376-3380. [PMID: 38568099 DOI: 10.1039/d4ob00116h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2024]
Abstract
A Ru-promoted reductive cross-coupling of allyl bromides and electron-deficient alkenes to provide terminal 1,7-octadienes with magnesium as a reductant is reported herein. This approach enables the facile construction of a series of complex terminal 1,7-octadienes with an all-carbon quaternary center under mild reaction conditions, and the synthetic utility of the current method has been demonstrated by a gram scale synthesis. Preliminary mechanism investigations suggested that a radical pathway might not be involved in this transformation.
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Affiliation(s)
- Shurong Zhang
- Faculty of Science, Kunming University of Science and Technology, Kunming 650500, P. R. China.
| | - Xinjie Zhao
- Faculty of Science, Kunming University of Science and Technology, Kunming 650500, P. R. China.
| | - Guiping Qin
- Faculty of Science, Kunming University of Science and Technology, Kunming 650500, P. R. China.
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4
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Zhang Q, Liu XY, Zhang YD, Huang MY, Zhang XY, Zhu SF. Iron-Catalyzed C(sp 3)-C(sp 3) Coupling to Construct Quaternary Carbon Centers. J Am Chem Soc 2024; 146:5051-5055. [PMID: 38373353 DOI: 10.1021/jacs.3c14032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2024]
Abstract
The construction of quaternary carbon centers via C-C coupling protocols remains challenging. The coupling of tertiary C(sp3) with secondary or tertiary C(sp3) counterparts has been hindered by pronounced steric clashes and many side reactions. Herein, we have successfully developed a type of bisphosphine ligand iron complex-catalyzed coupling reactions of tertiary alkyl halides with secondary alkyl zinc reagents and efficiently realized the coupling reaction between tertiary C(sp3) and secondary C(sp3) with high selectivity for the initial instance, which provided an efficient method for the construction of quaternary carbon centers with high steric hindrance. The combination of an iron catalyst and directing group of the substrate makes the great challenging transformation possible.
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Affiliation(s)
- Qiao Zhang
- Frontiers Science Center of New Organic Matters, State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
- Haihe Laboratory of Sustainable Chemical Transformations, Tianjin 300192, China
| | - Xiang-Yu Liu
- Frontiers Science Center of New Organic Matters, State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Yan-Dong Zhang
- Frontiers Science Center of New Organic Matters, State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Ming-Yao Huang
- Frontiers Science Center of New Organic Matters, State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Xin-Yu Zhang
- Frontiers Science Center of New Organic Matters, State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Shou-Fei Zhu
- Frontiers Science Center of New Organic Matters, State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
- Haihe Laboratory of Sustainable Chemical Transformations, Tianjin 300192, China
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5
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Sun D, Rajeshkumar T, Li Y, Xu J, Chen R, Wan Z, Lv Z, Maron L, Chen YH. Lanthanum-Catalyzed Stereospecific Cross-Coupling of Propargylic Substrates with Grignard Reagents. Org Lett 2023; 25:6730-6735. [PMID: 37671845 DOI: 10.1021/acs.orglett.3c02600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/07/2023]
Abstract
Transition-metal-catalyzed cross-coupling of propargylic electrophiles and Grignard reagents provides densely functionalized products that are extremely useful synthetic intermediates. However, examples of conversion of propargylic derivatives to form propargyl compounds remain limited due to the challenging regioselectivity. We use LaCl3·2LiCl to catalyze propargylation of Grignard reagents in the absence of ligand in high regioselectivity and stereospecificity. The approach shows a wide substrate scope using alkyl or (hetero)aryl Grignard reagents and alkynyl electrophiles with different leaving groups. Our protocol was further applied for the formal synthesis of frondosin B. It is worth exploring methodologies utilizing the naturally abundant and relatively nontoxic lanthanum catalysts.
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Affiliation(s)
- Dandan Sun
- Institute for Advanced Studies (IAS), Wuhan University, Wuhan, Hubei 430072, People's Republic of China
| | - Thayalan Rajeshkumar
- LPCNO, CNRS & INSA, Université Paul Sabatier, 135 Avenue de Rangueil, 31077 Toulouse, France
| | - Yifan Li
- Institute for Advanced Studies (IAS), Wuhan University, Wuhan, Hubei 430072, People's Republic of China
| | - Jiaxin Xu
- Institute for Advanced Studies (IAS), Wuhan University, Wuhan, Hubei 430072, People's Republic of China
| | - Runkai Chen
- Institute for Advanced Studies (IAS), Wuhan University, Wuhan, Hubei 430072, People's Republic of China
| | - Zhaohua Wan
- Institute for Advanced Studies (IAS), Wuhan University, Wuhan, Hubei 430072, People's Republic of China
| | - Zongchao Lv
- Institute for Advanced Studies (IAS), Wuhan University, Wuhan, Hubei 430072, People's Republic of China
- CMC Pharmaceutical Research Center, Wuhan RS Pharmaceutical Co., Ltd., Wuhan 430073, China
| | - Laurent Maron
- LPCNO, CNRS & INSA, Université Paul Sabatier, 135 Avenue de Rangueil, 31077 Toulouse, France
| | - Yi-Hung Chen
- Institute for Advanced Studies (IAS), Wuhan University, Wuhan, Hubei 430072, People's Republic of China
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6
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Iwasaki T, Kambe N. Cross- and Multi-Coupling Reactions Using Monofluoroalkanes. CHEM REC 2023; 23:e202300033. [PMID: 37070641 DOI: 10.1002/tcr.202300033] [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: 01/30/2023] [Revised: 04/03/2023] [Indexed: 04/19/2023]
Abstract
Carbon-fluorine bonds are stable and have demonstrated sluggishness against various chemical manipulations. However, selective transformations of C-F bonds can be achieved by developing appropriate conditions as useful synthetic methods in organic chemistry. This review focuses on C-C bond formation at monofluorinated sp3 -hybridized carbons via C-F bond cleavage, including cross-coupling and multi-component coupling reactions. The C-F bond cleavage mechanisms on the sp3 -hybridized carbon centers can be primarily categorized into three types: Lewis acids promoted F atom elimination to generate carbocation intermediates; nucleophilic substitution with metal or carbon nucleophiles supported by the activation of C-F bonds by coordination of Lewis acids; and the cleavage of C-F bonds via a single electron transfer. The characteristic features of alkyl fluorides, in comparison with other (pseudo)halides as promising electrophilic coupling counterparts, are also discussed.
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Affiliation(s)
- Takanori Iwasaki
- Department of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan
| | - Nobuaki Kambe
- Research Center for Environmental Preservation, Osaka University, 2-4 Yamadaoka, Suita, Osaka, 565-0871, Japan
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7
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Do M, Anosike SI, Beng TK. Diastereospecific arylation and cascade deconstructive amidation/thioesterification of readily available lactam-fused bromolactones. RSC Adv 2023; 13:25691-25698. [PMID: 37649665 PMCID: PMC10463012 DOI: 10.1039/d3ra04690g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Accepted: 08/18/2023] [Indexed: 09/01/2023] Open
Abstract
An intrinsic goal when designing synthetic methodology is to identify approaches whereby readily accessible precursors are converted into an array of products, which efficiently tap into new 3D-chemical space. In these studies, readily available bicyclic lactam-bromolactones have been interrogated in several fragment growth protocols by utilizing the halogen and lactone motifs as versatile linchpins for strategic construction of C-C, C-N, C-O, and C-S bonds. Diastereospecific C(sp3)-C(sp2) Kumada coupling of sterically imposing [5,5]-bicyclic lactam-bromolactones with several aryl Grignard reagents, under palladium catalysis, furnishes diarylmethane-tethered lactam-lactones in synthetically attractive yields, stereoinvertive fashion, and with a tolerance for many functional groups. When [5,6]-bicyclic lactam-bromolactones, which are prone to β-hydride elimination are employed, efficient arylation is observed only under Co(acac)3-catalyzed conditions. Importantly, these [5,6]-bicyclic lactam-bromolactones undergo retentive arylation, independent of the transition metal catalyst. A base-mediated cascade deconstructive amidation of the [5,6]-bicyclic lactam-bromolactones with primary aliphatic amines proceeds efficiently to afford epoxide-tethered lactam carboxamides, which bear four contiguous stereocenters. Furthermore, an unusual route to homoallylic thioesters has been uncovered through deconstructive contra-thermodynamic thioesterification of the lactam-fused bromolactone precursors.
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Affiliation(s)
- Minh Do
- Department of Chemistry, Central Washington University Ellensburg WA 98926 USA
| | - Stella I Anosike
- Department of Chemistry, Central Washington University Ellensburg WA 98926 USA
| | - Timothy K Beng
- Department of Chemistry, Central Washington University Ellensburg WA 98926 USA
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8
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Gould CA, Pace AL, MacMillan DWC. Rapid and Modular Access to Quaternary Carbons from Tertiary Alcohols via Bimolecular Homolytic Substitution. J Am Chem Soc 2023; 145:16330-16336. [PMID: 37471294 PMCID: PMC10680126 DOI: 10.1021/jacs.3c05405] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/22/2023]
Abstract
Quaternary carbons are ubiquitous in bioactive molecules; however, synthetic methods for the construction of this motif remain underdeveloped. Here, we report the synthesis of quaternary carbons from tertiary alcohols, a class of structurally diverse, bench-stable feedstocks, via the merger of photoredox catalysis and iron-mediated SH2 bond formation. This alcohol-bromide cross-coupling is enabled by a novel halogen-atom transfer (XAT) reagent, which is the first reductively activated XAT reagent to be reported. A wide variety of sterically congested quaternary products can be accessed through this mild and practical protocol including products derived from both alkylation and benzylation of tertiary fragments. We further demonstrate the synthetic utility of this method through the expedited synthesis of a liver receptor agonist and through a two-step conversion of ketones and esters to quaternary products, which enables the modular control of up to three of the four substituents on a quaternary center.
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Affiliation(s)
- Colin A Gould
- Merck Center for Catalysis at Princeton University, Princeton, New Jersey 08544, United States
| | - Andria L Pace
- Merck Center for Catalysis at Princeton University, Princeton, New Jersey 08544, United States
| | - David W C MacMillan
- Merck Center for Catalysis at Princeton University, Princeton, New Jersey 08544, United States
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9
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Cobalt-Catalyzed C–C Coupling Reactions with Csp3 Electrophiles. TOP ORGANOMETAL CHEM 2023. [DOI: 10.1007/3418_2023_83] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
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10
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Lin Q, Gong H, Wu F. Ni-Catalyzed Reductive Coupling of Heteroaryl Bromides with Tertiary Alkyl Halides. Org Lett 2022; 24:8996-9000. [DOI: 10.1021/acs.orglett.2c03598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
Affiliation(s)
- Quan Lin
- School of Materials Science and Engineering, Shanghai University, 99 Shang-Da Road, Shanghai 200444, China
- Center for Supramolecular Chemistry and Catalysis, Department of Chemistry, Shanghai University, 99 Shang-Da Road, Shanghai 200444, China
| | - Hegui Gong
- Center for Supramolecular Chemistry and Catalysis, Department of Chemistry, Shanghai University, 99 Shang-Da Road, Shanghai 200444, China
| | - Fan Wu
- Institute of Drug Discovery Technology and Qian Xuesen Collaborative Research Center of Astrochemistry and Space Life Sciences, Ningbo University, Ningbo, Zhejiang 315211, China
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11
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Kreyenschmidt F, Eisele NF, Hevelke V, Rahrt R, Kreyenschmidt A, Koszinowski K. In-Situ Analysis of Anionic Coordination Polymerizations by Electrospray-Ionization Mass Spectrometry. Angew Chem Int Ed Engl 2022; 61:e202210211. [PMID: 35977914 PMCID: PMC9828445 DOI: 10.1002/anie.202210211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Indexed: 01/12/2023]
Abstract
Anionic coordination polymerizations proceed via highly reactive intermediates, whose in situ analysis has remained difficult. Here, we show that electrospray-ionization mass spectrometry is a promising method to obtain detailed information on the polymerization process. Focusing on polymerization reactions of 1,3-dienes initiated by CoCl2 /RLi (R=Me, nBu, tBu, Ph), we directly observe the growing polymer chains and characterize the active anionic cobalt centers by gas-phase fragmentation experiments. On the basis of these results, we suggest a plausible mechanism for the polymerization reaction. Moreover, the ESI mass spectra permit the determination of molecular weight distributions, which are in good agreement with those derived from NMR-spectroscopic as well as MALDI mass-spectrometric measurements, and afford a wealth of kinetic data.
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Affiliation(s)
- Friedrich Kreyenschmidt
- Institut für Organische und Biomolekulare ChemieUniversität GöttingenTammannstraße 237077GöttingenGermany
| | - Niklas F. Eisele
- Institut für Organische und Biomolekulare ChemieUniversität GöttingenTammannstraße 237077GöttingenGermany
| | - Valentin Hevelke
- Institut für Organische und Biomolekulare ChemieUniversität GöttingenTammannstraße 237077GöttingenGermany
| | - Rene Rahrt
- Institut für Organische und Biomolekulare ChemieUniversität GöttingenTammannstraße 237077GöttingenGermany
| | | | - Konrad Koszinowski
- Institut für Organische und Biomolekulare ChemieUniversität GöttingenTammannstraße 237077GöttingenGermany
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12
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Cheng R, de Ruiter G, Li CJ. Cobalt-catalyzed cross-coupling of Umpolung carbonyls with alkyl halides under mild conditions. Chem Commun (Camb) 2022; 58:11563-11566. [PMID: 36165102 DOI: 10.1039/d2cc04302e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
While classical cross-couplings are dominated by palladium and nickel catalysts, cobalt-based catalysts have shown unique advantages for such cross-coupling reactions in terms of higher catalytic activity and lower toxicity. Herein, we describe a novel cobalt-catalyzed alkyl-alkyl cross-coupling reaction of hydrazone with alkyl halides under mild reaction conditions, where the use of a PNP-type pincer ligand is essential for catalysis. Both aldehyde and ketone hydrazones are compatible with this reaction, giving a series of C(sp3)-C(sp3) coupling products in moderate to good yields.
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Affiliation(s)
- Ruofei Cheng
- Department of Chemistry, and FQRNT Centre for Green Chemistry and Catalysis, McGill University, 801 Sherbrooke St. W., Montreal, Quebec H3A 0B8, Canada.
| | - Graham de Ruiter
- Schulich Faculty of Chemistry, Technion - Israel Institute of Technology, Technion City, Haifa 3200008, Israel
| | - Chao-Jun Li
- Department of Chemistry, and FQRNT Centre for Green Chemistry and Catalysis, McGill University, 801 Sherbrooke St. W., Montreal, Quebec H3A 0B8, Canada.
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13
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Kreyenschmidt F, Eisele NF, Hevelke V, Rahrt R, Kreyenschmidt AK, Koszinowski K. In‐Situ Analysis of Anionic Coordination Polymerizations by Electrospray‐Ionization Mass Spectrometry. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202210211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Friedrich Kreyenschmidt
- Georg-August-Universität Göttingen: Georg-August-Universitat Gottingen Institut für Organische und Biomolekulare Chemie GERMANY
| | - Niklas F. Eisele
- Georg-August-Universitat Gottingen Institut für Organische und Biomolekulare Chemie GERMANY
| | - Valentin Hevelke
- Georg-August-Universitat Gottingen Institut für Organische und Biomolekulare Chemie GERMANY
| | - Rene Rahrt
- Georg-August-Universitat Gottingen Institut für Organische und Biomolekulare Chemie GERMANY
| | | | - Konrad Koszinowski
- Georg-August-Universitat Gottingen Institut für Organische und Biomolekulare Chemie Tammannstr. 2 37077 Göttingen GERMANY
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14
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Li R, Wang Z, Zhang Y, Tan Z, Xu D. Iodine‐Catalyzed Oxidative Coupling of Indolin‐2‐ones with Indoles: Synthesis of 3,3‐Disubstituted Oxindole Compounds. ChemistrySelect 2022. [DOI: 10.1002/slct.202200558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Ruo‐Pu Li
- National Engineering Research Center of Pesticide (Tianjin) College of Chemistry Nankai University Tianjin 300071 China
| | - Zheng‐Lin Wang
- National Engineering Research Center of Pesticide (Tianjin) College of Chemistry Nankai University Tianjin 300071 China
| | - Yun‐Hao Zhang
- National Engineering Research Center of Pesticide (Tianjin) College of Chemistry Nankai University Tianjin 300071 China
| | - Zhi‐Yu Tan
- National Engineering Research Center of Pesticide (Tianjin) College of Chemistry Nankai University Tianjin 300071 China
| | - Da‐Zhen Xu
- National Engineering Research Center of Pesticide (Tianjin) College of Chemistry Nankai University Tianjin 300071 China
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15
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Sakai HA, MacMillan DWC. Nontraditional Fragment Couplings of Alcohols and Carboxylic Acids: C( sp3)-C( sp3) Cross-Coupling via Radical Sorting. J Am Chem Soc 2022; 144:6185-6192. [PMID: 35353531 DOI: 10.1021/jacs.2c02062] [Citation(s) in RCA: 53] [Impact Index Per Article: 26.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Alcohols and carboxylic acids are among the most commercially abundant, synthetically versatile, and operationally convenient functional groups in organic chemistry. Under visible light photoredox catalysis, these native synthetic handles readily undergo radical activation, and the resulting open-shell intermediates can subsequently participate in transition metal catalysis. In this report, we describe the C(sp3)-C(sp3) cross-coupling of alcohols and carboxylic acids through the dual combination of N-heterocyclic carbene (NHC)-mediated deoxygenation and hypervalent iodine-mediated decarboxylation. This mild and practical Ni-catalyzed radical-coupling protocol was employed to prepare a wide array of alkyl-alkyl cross-coupled products, including highly congested quaternary carbon centers from the corresponding tertiary alcohols or tertiary carboxylic acids. We demonstrate the synthetic applications of this methodology to alcohol C1-alkylation and formal homologation, as well as to the late-stage functionalization of drugs, natural products, and biomolecules.
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Affiliation(s)
- Holt A Sakai
- Merck Center for Catalysis at Princeton University, Princeton, New Jersey 08544, United States
| | - David W C MacMillan
- Merck Center for Catalysis at Princeton University, Princeton, New Jersey 08544, United States
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16
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Liu W, Lavagnino MN, Gould CA, Alcázar J, MacMillan DWC. A biomimetic S H2 cross-coupling mechanism for quaternary sp 3-carbon formation. Science 2021; 374:1258-1263. [PMID: 34762491 DOI: 10.1126/science.abl4322] [Citation(s) in RCA: 56] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
[Figure: see text].
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Affiliation(s)
- Wei Liu
- Merck Center for Catalysis at Princeton University, Princeton, NJ 08544, USA
| | - Marissa N Lavagnino
- Merck Center for Catalysis at Princeton University, Princeton, NJ 08544, USA
| | - Colin A Gould
- Merck Center for Catalysis at Princeton University, Princeton, NJ 08544, USA
| | - Jesús Alcázar
- Discovery Chemistry, Janssen Research and Development, Janssen-Cilag S.A., C/Jarama 75A, Toledo 45007, Spain
| | - David W C MacMillan
- Merck Center for Catalysis at Princeton University, Princeton, NJ 08544, USA
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17
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Li Z, Cheng XY, Yang NY, Chen JJ, Tang WY, Bian JQ, Cheng YF, Li ZL, Gu QS, Liu XY. A Cobalt-Catalyzed Enantioconvergent Radical Negishi C(sp 3)–C(sp 2) Cross-Coupling with Chiral Multidentate N, N, P-Ligand. Organometallics 2021. [DOI: 10.1021/acs.organomet.1c00190] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Zhuang Li
- Shenzhen Key Laboratory of Small Molecule Drug Discovery and Synthesis, Southern University of Science and Technology, Shenzhen 518055, China
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Xian-Yan Cheng
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Ning-Yuan Yang
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Ji-Jun Chen
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Wen-Yue Tang
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Jun-Qian Bian
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Yong-Feng Cheng
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Zhong-Liang Li
- Academy for Advanced Interdisciplinary Studies and Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Qiang-Shuai Gu
- Shenzhen Key Laboratory of Small Molecule Drug Discovery and Synthesis, Southern University of Science and Technology, Shenzhen 518055, China
- Academy for Advanced Interdisciplinary Studies and Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Xin-Yuan Liu
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
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18
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Okamoto K, Sasakura K, Funasaka S, Watanabe H, Suezaki M, Ohe K. Properties and Reactivities of Zwitterionic Platinum(II)-ate Complexes Generated by Transforming Coordination of an Alkyne–Bisphosphine Ligand. Organometallics 2021. [DOI: 10.1021/acs.organomet.0c00759] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Kazuhiro Okamoto
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Kohei Sasakura
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Satoshi Funasaka
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Hiiro Watanabe
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Masahiro Suezaki
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Kouichi Ohe
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
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19
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Deng Y, Zhang X, Liu C, Cao S. Cu-mediated or metal-free alkylation of gem-dibromoalkenes with tertiary, secondary and primary alkyl Grignard reagents. Tetrahedron 2021. [DOI: 10.1016/j.tet.2020.131804] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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20
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Wang J, Gong Y, Sun D, Gong H. Nickel-catalyzed reductive benzylation of tertiary alkyl halides with benzyl chlorides and chloroformates. Org Chem Front 2021. [DOI: 10.1039/d1qo00264c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
We report a Ni-catalyzed cross-electrophile coupling of benzyl chlorides and chloroformates with unactivated tertiary alkyl halides to forge the challenging benzylated all C(sp3)-quaternary carbon centers.
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Affiliation(s)
- Jiabao Wang
- Center for Supramolecular Chemistry and Catalysis and Department of Chemistry
- Shanghai University
- Shanghai 200444
- China
| | - Yuxin Gong
- Center for Supramolecular Chemistry and Catalysis and Department of Chemistry
- Shanghai University
- Shanghai 200444
- China
| | - Deli Sun
- Center for Supramolecular Chemistry and Catalysis and Department of Chemistry
- Shanghai University
- Shanghai 200444
- China
| | - Hegui Gong
- Center for Supramolecular Chemistry and Catalysis and Department of Chemistry
- Shanghai University
- Shanghai 200444
- China
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21
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Hell Z, Juhász K, Magyar Á. Transition-Metal-Catalyzed Cross-Coupling Reactions of Grignard Reagents. SYNTHESIS-STUTTGART 2020. [DOI: 10.1055/s-0040-1705986] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
AbstractTransition-metal-catalyzed cross-coupling of organohalides, ethers, sulfides, amines, and alcohols (and derivatives thereof) with Grignard reagents, known as the Kumada–Tamao–Corriu reaction, can be used to prepare important intermediates in the synthesis of numerous biologically active compounds. The most frequently used transition metals are nickel, palladium, and iron, but there are several examples for cross-coupling reactions catalyzed by copper, cobalt, manganese, chromium, etc. salts and complexes. The aim of this review is to summarize the most important transition-metal-catalyzed cross-coupling reactions realized in the period 2000 to 2020.1 Introduction2 Nickel Catalysis3 Palladium Catalysis4 Iron Catalysis5 Catalysis by Other Transition Metals5.1 Cobalt Catalysis5.2 Copper Catalysis5.3 Manganese Catalysis5.4 Chromium Catalysis6 Conclusion
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22
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Zhu C, Liu ZY, Tang L, Zhang H, Zhang YF, Walsh PJ, Feng C. Migratory functionalization of unactivated alkyl bromides for construction of all-carbon quaternary centers via transposed tert-C-radicals. Nat Commun 2020; 11:4860. [PMID: 32978381 PMCID: PMC7519689 DOI: 10.1038/s41467-020-18658-4] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Accepted: 08/24/2020] [Indexed: 11/25/2022] Open
Abstract
Despite remarkable recent advances in transition-metal-catalyzed C(sp3)−C cross-coupling reactions, there remain challenging bond formations. One class of such reactions include the formation of tertiary-C(sp3)−C bonds, presumably due to unfavorable steric interactions and competing isomerizations of tertiary alkyl metal intermediates. Reported herein is a Ni-catalyzed migratory 3,3-difluoroallylation of unactivated alkyl bromides at remote tertiary centers. This approach enables the facile construction of otherwise difficult to prepare all-carbon quaternary centers. Key to the success of this transformation is an unusual remote functionalization via chain walking to the most sterically hindered tertiary C(sp3) center of the substrate. Preliminary mechanistic and radical trapping studies with primary alkyl bromides suggest a unique mode of tertiary C-radical generation through chain-walking followed by Ni–C bond homolysis. This strategy is complementary to the existing coupling protocols with tert-alkyl organometallic or -alkyl halide reagents, and it enables the expedient formation of quaternary centers from easily available starting materials. Formation of tertiary C(sp3)-C bonds is a formidable challenge due to steric interactions and low barriers for isomerization of intermediates. Here, the authors show a Ni-catalyzed migratory 3,3-difluoroallylation of unactivated alkyl bromides at remote tertiary carbon centers.
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Affiliation(s)
- Chuan Zhu
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis (IAS), School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, 211816, Nanjing, P. R. China
| | - Ze-Yao Liu
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis (IAS), School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, 211816, Nanjing, P. R. China
| | - Luning Tang
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis (IAS), School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, 211816, Nanjing, P. R. China
| | - Heng Zhang
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis (IAS), School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, 211816, Nanjing, P. R. China
| | - Yu-Feng Zhang
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis (IAS), School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, 211816, Nanjing, P. R. China
| | - Patrick J Walsh
- Roy and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, PA, 19104, USA.
| | - Chao Feng
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis (IAS), School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, 211816, Nanjing, P. R. China.
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23
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Guérinot A, Cossy J. Cobalt-Catalyzed Cross-Couplings between Alkyl Halides and Grignard Reagents. Acc Chem Res 2020; 53:1351-1363. [PMID: 32649826 DOI: 10.1021/acs.accounts.0c00238] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Metal-catalyzed cross-couplings have emerged as essential tools for the construction of C-C bonds. The identification of efficient catalytic systems as well as large substrate scope made these cross-couplings key reactions to access valuable molecules ranging from materials, agrochemicals to active pharmaceutical ingredients. They have been increasingly integrated in retrosynthetic plans, allowing shorter and original route development. Palladium-catalyzed cross-couplings still largely rule the field, with the most popular reactions in industrial processes being the Suzuki and Sonogashira couplings. However, the extensive use of palladium complexes raises several problems such as limited resources, high cost, environmental impact, and frequent need for sophisticated ligands. As a consequence, the use of nonprecious and cheap metal catalysts has appeared as a new horizon in cross-coupling development. Over the last three decades, a growing interest has thus been devoted to Fe-, Co-, Cu-, or Ni-catalyzed cross-couplings. Their natural abundance makes them cost-effective, allowing the conception of more sustainable and less expensive chemical processes, especially for large-scale production of active molecules. In addition to these economical and environmental considerations, the 3d metal catalysts also exhibit complementary reactivity with palladium complexes, facilitating the use of alkyl halide partners due to the decrease of β-elimination side reactions. In particular, by using cobalt catalysts, numerous cross-couplings between alkyl halides and organometallics have been described. However, cobalt catalysis still stays far behind palladium catalysis in terms of popularity and applications, and the expansion of the substrate scope as well as the development of simple and robust catalytic systems remains an important challenge.In 2012, our group entered the cobalt catalysis field by developing a cobalt-catalyzed cross-coupling between C-bromo glycosides and Grignard reagents. The generality of the coupling allowed the preparation of a range of valuable C-aryl and C-vinyl glycoside building blocks. We then focused on the functionalization of saturated N-heterocycles, and a variety of halo-azetidines, -pyrrolidines, and -piperidines were successfully reacted with aryl and alkenyl Grignard reagents under cobalt catalysis. With the objective of preparing valuable α-aryl amides, a cobalt-catalyzed cross-coupling applied to α-bromo amides was studied and then extended to α-bromo lactams. Recently, we also reported an efficient and general cross-coupling involving cyclopropyl- and cyclobutyl-magnesium bromides. This method allows the alkylation of functionalized small strained rings by a range of primary and secondary alkyl halides.
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Affiliation(s)
- Amandine Guérinot
- Molecular, Macromolecular Chemistry and Materials, ESPCI Paris, CNRS, PSL University, 10 rue Vauquelin, 75005 Paris, France
| | - Janine Cossy
- Molecular, Macromolecular Chemistry and Materials, ESPCI Paris, CNRS, PSL University, 10 rue Vauquelin, 75005 Paris, France
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24
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Zhang XG, Guo P, Han JF, Ye KY. Cobalt fluorides: preparation, reactivity and applications in catalytic fluorination and C-F functionalization. Chem Commun (Camb) 2020; 56:8512-8523. [PMID: 32558844 DOI: 10.1039/d0cc03089a] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Recent advances in the investigation of cobalt fluorides in organofluorine chemistry are highlighted. The preparation and reactivity of inorganic and organometallic cobalt fluorides are discussed. The in-depth understanding of the structures and reactivity of cobalt fluorides allows chemists to develop diverse innovative catalytic fluorination and C-F functionalization.
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Affiliation(s)
- Xiang-Gui Zhang
- Key Laboratory of Molecule Synthesis and Function Discovery (Fujian Province University), College of Chemistry, Fuzhou University, Fuzhou 350108, China.
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25
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Huang W, Wan X, Shen Q. Cobalt-Catalyzed Asymmetric Cross-Coupling Reaction of Fluorinated Secondary Benzyl Bromides with Lithium Aryl Boronates/ZnBr 2. Org Lett 2020; 22:4327-4332. [PMID: 32432476 DOI: 10.1021/acs.orglett.0c01363] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A cobalt-catalyzed asymmetric cross-coupling of α-bromo-α-fluorotoluene derivatives with a variety of aryl zincates derived from lithium aryl n-butyl pinacol boronates and ZnBr2 under mild reaction conditions was described. In addition to mild reaction conditions, another advantage includes the compatibility of various common functional groups such as fluoride, chloride, bromide, cyano, or ester groups. Furthermore, this protocol was successfully applied to the enantioselective synthesis of three fluorinated derivatives of biologically active compounds or drug molecules.
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Affiliation(s)
- Weichen Huang
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Xiaolong Wan
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Qilong Shen
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
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26
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Agata R, Lu S, Matsuda H, Isozaki K, Nakamura M. Regio- and stereoselective synthesis of 1,4-enynes by iron-catalysed Suzuki-Miyaura coupling of propargyl electrophiles under ligand-free conditions. Org Biomol Chem 2020; 18:3022-3026. [PMID: 32239018 DOI: 10.1039/d0ob00357c] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The first iron-catalysed cross coupling of propargyl electrophiles with lithium alkenylborates has been developed. Various propargyl electrophiles can be cross-coupled with lithium (E)- or (Z)-alkenylborates in a stereospecific manner to afford the corresponding 1,4-enynes in good to excellent yields. The reaction features high SN2-type regioselectivity and functional group compatibility.
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Affiliation(s)
- Ryosuke Agata
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan. and Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Siming Lu
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan. and Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Hiroshi Matsuda
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan.
| | - Katsuhiro Isozaki
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan. and Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Masaharu Nakamura
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan. and Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
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27
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Iwasaki T. Catalytic Construction of Carbon Frameworks Employing Alkyl Fluorides as Electrophiles. J SYN ORG CHEM JPN 2020. [DOI: 10.5059/yukigoseikyokaishi.78.109] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Takanori Iwasaki
- Department of Chemistry and Biotechnology, The University of Tokyo
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28
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Chen H, Ye Y, Tong W, Fang J, Gong H. Formation of allylated quaternary carbon centers via C-O/C-O bond fragmentation of oxalates and allyl carbonates. Chem Commun (Camb) 2020; 56:454-457. [PMID: 31825428 DOI: 10.1039/c9cc07072a] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Disclosed herein emphasizes Fe-promoted cross-electrophile allylation of tertiary alkyl oxalates with allyl carbonates that generates all C(sp3)-quaternary centers. The reaction involves fragmentation of tertiary alkyl oxalate C-O bonds to give tertiary alkyl radical intermediates, addition of the radicals to less hindered alkene terminals, and subsequent cleavage of the allyl C-O bonds. Allylation with 2-aryl substituted allyl carbonates was mediated by Zn/MgCl2, and Fe is used to promote the radical addition efficiency. By introduction of activated alkenes, a three-component radical cascade reaction took place.
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Affiliation(s)
- Haifeng Chen
- School of Materials Science and Engineering, Shanghai University, 99 Shang-Da Road, Shanghai 200444, China.
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29
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Kambe N. Chemistry of Late Heteroatoms and Transition Metals. J SYN ORG CHEM JPN 2019. [DOI: 10.5059/yukigoseikyokaishi.77.1252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Nobuaki Kambe
- The Institute of Scientific and Industrial Research, Osaka University
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30
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Kolter M, Koszinowski K. Formation of Transient Anionic Metal Clusters in Palladium/Diene-Catalyzed Cross-Coupling Reactions. Chemistry 2019; 25:13376-13384. [PMID: 31335999 PMCID: PMC7687115 DOI: 10.1002/chem.201902610] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Revised: 07/11/2019] [Indexed: 12/30/2022]
Abstract
Despite their considerable practical value, palladium/1,3-diene-catalyzed cross-coupling reactions between Grignard reagents RMgCl and alkyl halides AlkylX remain mechanistically poorly understood. Herein, we probe the intermediates formed in these reactions by a combination of electrospray-ionization mass spectrometry, UV/Vis spectroscopy, and NMR spectroscopy. According to our results and in line with previous hypotheses, the first step of the catalytic cycle brings about transmetalation to afford organopalladate anions. These organopalladate anions apparently undergo SN 2-type reactions with the AlkylX coupling partner. The resulting neutral complexes then release the cross-coupling products by reductive elimination. In gas-phase fragmentation experiments, the occurrence of reductive eliminations was observed for anionic analogues of the neutral complexes. Although the actual catalytic cycle is supposed to involve chiefly mononuclear palladium species, anionic palladium nanoclusters [Pdn R(DE)n ]- , (n=2, 4, 6; DE=diene) were also observed. At short reaction times, the dinuclear complexes usually predominated, whereas at longer times the tetra- and hexanuclear clusters became relatively more abundant. In parallel, the formation of palladium black pointed to continued aggregation processes. Thus, the present study directly shows dynamic behavior of the palladium/diene catalyst system and degradation of the active catalyst with increasing reaction time.
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Affiliation(s)
- Marlene Kolter
- Institut für Organische und Biomolekulare ChemieUniversität GöttingenTammannstrasse 237077GöttingenGermany
| | - Konrad Koszinowski
- Institut für Organische und Biomolekulare ChemieUniversität GöttingenTammannstrasse 237077GöttingenGermany
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31
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Komeyama K, Michiyuki T, Osaka I. Nickel/Cobalt-Catalyzed C(sp3)–C(sp3) Cross-Coupling of Alkyl Halides with Alkyl Tosylates. ACS Catal 2019. [DOI: 10.1021/acscatal.9b03352] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Kimihiro Komeyama
- Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8527, Japan
| | - Takuya Michiyuki
- Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8527, Japan
| | - Itaru Osaka
- Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8527, Japan
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32
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Takizawa K, Sekino T, Sato S, Yoshino T, Kojima M, Matsunaga S. Cobalt‐Catalyzed Allylic Alkylation Enabled by Organophotoredox Catalysis. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201902509] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Koji Takizawa
- Faculty of Pharmaceutical SciencesHokkaido University Kita-ku Sapporo 060-0812 Japan
| | - Tomoyuki Sekino
- Faculty of Pharmaceutical SciencesHokkaido University Kita-ku Sapporo 060-0812 Japan
| | - Shunta Sato
- Faculty of Pharmaceutical SciencesHokkaido University Kita-ku Sapporo 060-0812 Japan
| | - Tatsuhiko Yoshino
- Faculty of Pharmaceutical SciencesHokkaido University Kita-ku Sapporo 060-0812 Japan
| | - Masahiro Kojima
- Faculty of Pharmaceutical SciencesHokkaido University Kita-ku Sapporo 060-0812 Japan
| | - Shigeki Matsunaga
- Faculty of Pharmaceutical SciencesHokkaido University Kita-ku Sapporo 060-0812 Japan
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33
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Takizawa K, Sekino T, Sato S, Yoshino T, Kojima M, Matsunaga S. Cobalt‐Catalyzed Allylic Alkylation Enabled by Organophotoredox Catalysis. Angew Chem Int Ed Engl 2019; 58:9199-9203. [DOI: 10.1002/anie.201902509] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Revised: 04/15/2019] [Indexed: 01/14/2023]
Affiliation(s)
- Koji Takizawa
- Faculty of Pharmaceutical SciencesHokkaido University Kita-ku Sapporo 060-0812 Japan
| | - Tomoyuki Sekino
- Faculty of Pharmaceutical SciencesHokkaido University Kita-ku Sapporo 060-0812 Japan
| | - Shunta Sato
- Faculty of Pharmaceutical SciencesHokkaido University Kita-ku Sapporo 060-0812 Japan
| | - Tatsuhiko Yoshino
- Faculty of Pharmaceutical SciencesHokkaido University Kita-ku Sapporo 060-0812 Japan
| | - Masahiro Kojima
- Faculty of Pharmaceutical SciencesHokkaido University Kita-ku Sapporo 060-0812 Japan
| | - Shigeki Matsunaga
- Faculty of Pharmaceutical SciencesHokkaido University Kita-ku Sapporo 060-0812 Japan
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34
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Green SA, Huffman TR, McCourt RO, van der Puyl V, Shenvi RA. Hydroalkylation of Olefins To Form Quaternary Carbons. J Am Chem Soc 2019; 141:7709-7714. [DOI: 10.1021/jacs.9b02844] [Citation(s) in RCA: 93] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Samantha A. Green
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Tucker R. Huffman
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Ruairí O. McCourt
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Vincent van der Puyl
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Ryan A. Shenvi
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
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35
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Pulikottil FT, Pilli R, Murugesan V, Krishnan CG, Rasappan R. A Free‐Radical Reduction and Cyclization of Alkyl Halides Mediated by FeCl
2. ChemCatChem 2019. [DOI: 10.1002/cctc.201900230] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Feba Thomas Pulikottil
- School of ChemistryIndian Institute of Science Education and Research Thiruvananthapuram Vithura, Thiruvananthapuram Kerala India
| | - Ramadevi Pilli
- School of ChemistryIndian Institute of Science Education and Research Thiruvananthapuram Vithura, Thiruvananthapuram Kerala India
| | - Vetrivelan Murugesan
- School of ChemistryIndian Institute of Science Education and Research Thiruvananthapuram Vithura, Thiruvananthapuram Kerala India
| | - Chandu G. Krishnan
- School of ChemistryIndian Institute of Science Education and Research Thiruvananthapuram Vithura, Thiruvananthapuram Kerala India
| | - Ramesh Rasappan
- School of ChemistryIndian Institute of Science Education and Research Thiruvananthapuram Vithura, Thiruvananthapuram Kerala India
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36
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Andersen C, Ferey V, Daumas M, Bernardelli P, Guérinot A, Cossy J. Introduction of Cyclopropyl and Cyclobutyl Ring on Alkyl Iodides through Cobalt-Catalyzed Cross-Coupling. Org Lett 2019; 21:2285-2289. [PMID: 30896173 DOI: 10.1021/acs.orglett.9b00579] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
A cobalt-catalyzed cross-coupling between alkyl iodides and cyclopropyl, cyclobutyl, and alkenyl Grignard reagents is disclosed. The reaction allows the introduction of strained rings on a large panel of primary and secondary alkyl iodides. The catalytic system is simple and nonexpensive, and the reaction is general, chemoselective, and diastereoconvergent. The alkene resulting from the cross-coupling can be transformed to substituted cyclopropanes using a Simmons-Smith reaction. The formation of radical intermediates during the coupling is hypothesized.
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Affiliation(s)
- Claire Andersen
- Molecular, Macromolecular Chemistry and Materials , ESPCI Paris, CNRS, PSL University , 10 rue Vauquelin , 75005 Paris , France
| | - Vincent Ferey
- Sanofi R&D , 371 rue du professeur Joseph Blayac , 34080 Montpellier , France
| | - Marc Daumas
- Sanofi Chimie , Route d'Avignon , 30390 Aramon , France
| | | | - Amandine Guérinot
- Molecular, Macromolecular Chemistry and Materials , ESPCI Paris, CNRS, PSL University , 10 rue Vauquelin , 75005 Paris , France
| | - Janine Cossy
- Molecular, Macromolecular Chemistry and Materials , ESPCI Paris, CNRS, PSL University , 10 rue Vauquelin , 75005 Paris , France
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37
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Kreyenschmidt F, Meurer SE, Koszinowski K. Mechanisms of Cobalt/Phosphine-Catalyzed Cross-Coupling Reactions. Chemistry 2019; 25:5912-5921. [PMID: 30734379 DOI: 10.1002/chem.201805964] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Indexed: 01/09/2023]
Abstract
>The combination of CoCl2 with bidentate phosphines is known to catalyze challenging cross-coupling and Heck-type reactions, but the mechanisms of these valuable transformations have not been established. Here, we use electrospray-ionization mass spectrometry to intercept the species formed in these reactions. Our results indicate that a sequence of transmetalation, reductive elimination, and redox disproportionation convert the cobalt(II) precatalyst into low-valent cobalt complexes. These species readily transfer single electrons to alkyl bromides, which thereupon dissociate into alkyl radicals and Br- . In cross-coupling reactions, the alkyl radicals add to the cobalt catalyst to form observable heteroleptic complexes, which release the coupling products through reductive eliminations. In the Heck-type reactions, the low abundance of newly formed ionic species renders the analysis more difficult. Nonetheless, our results also point to the occurrence of single-electron transfer processes and the involvement of radicals in these transformations.
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Affiliation(s)
- Friedrich Kreyenschmidt
- Institut für Organische und Biomolekulare Chemie, Universität Göttingen, Tammannstraße 2, 37077, Göttingen, Germany
| | - Selim E Meurer
- Institut für Organische und Biomolekulare Chemie, Universität Göttingen, Tammannstraße 2, 37077, Göttingen, Germany
| | - Konrad Koszinowski
- Institut für Organische und Biomolekulare Chemie, Universität Göttingen, Tammannstraße 2, 37077, Göttingen, Germany
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38
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Chen TG, Zhang H, Mykhailiuk PK, Merchant RR, Smith CA, Qin T, Baran PS. Quaternary Centers by Nickel-Catalyzed Cross-Coupling of Tertiary Carboxylic Acids and (Hetero)Aryl Zinc Reagents. Angew Chem Int Ed Engl 2019; 58:2454-2458. [PMID: 30623547 PMCID: PMC6391118 DOI: 10.1002/anie.201814524] [Citation(s) in RCA: 68] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Indexed: 01/07/2023]
Abstract
This work bridges a gap in the cross-coupling of aliphatic redox-active esters with aryl zinc reagents. Previously limited to primary, secondary, and specialized tertiary centers, a new protocol has been devised to enable the coupling of general tertiary systems using nickel catalysis. The scope of this operationally simple method is broad, and it can be used to simplify the synthesis of medicinally relevant motifs bearing quaternary centers.
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Affiliation(s)
- Tie-Gen Chen
- Department of Chemistry, Scripps Research, North Torrey Pines Road, La Jolla, CA, 92037, USA
| | - Haolin Zhang
- Department of Chemistry, Scripps Research, North Torrey Pines Road, La Jolla, CA, 92037, USA
| | - Pavel K Mykhailiuk
- Department of Chemistry, Scripps Research, North Torrey Pines Road, La Jolla, CA, 92037, USA
- Enamine Ltd., Chervonotkatska 78, 02094, Kyiv, Ukraine
- Taras Shevchenko National University of Kyiv, Chemistry Department, Volodymyrska 64, 01601, Kyiv, Ukraine
| | - Rohan R Merchant
- Department of Chemistry, Scripps Research, North Torrey Pines Road, La Jolla, CA, 92037, USA
| | - Courtney A Smith
- Department of Chemistry, Scripps Research, North Torrey Pines Road, La Jolla, CA, 92037, USA
| | - Tian Qin
- Department of Chemistry, Scripps Research, North Torrey Pines Road, La Jolla, CA, 92037, USA
| | - Phil S Baran
- Department of Chemistry, Scripps Research, North Torrey Pines Road, La Jolla, CA, 92037, USA
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39
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Chen TG, Zhang H, Mykhailiuk PK, Merchant RR, Smith CA, Qin T, Baran PS. Quaternary Centers by Nickel-Catalyzed Cross-Coupling of Tertiary Carboxylic Acids and (Hetero)Aryl Zinc Reagents. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201814524] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Tie-Gen Chen
- Department of Chemistry; Scripps Research; North Torrey Pines Road La Jolla CA 92037 USA
| | - Haolin Zhang
- Department of Chemistry; Scripps Research; North Torrey Pines Road La Jolla CA 92037 USA
| | - Pavel K. Mykhailiuk
- Department of Chemistry; Scripps Research; North Torrey Pines Road La Jolla CA 92037 USA
- Enamine Ltd.; Chervonotkatska 78 02094 Kyiv Ukraine
- Taras Shevchenko National University of Kyiv; Chemistry Department; Volodymyrska 64 01601 Kyiv Ukraine
| | - Rohan R. Merchant
- Department of Chemistry; Scripps Research; North Torrey Pines Road La Jolla CA 92037 USA
| | - Courtney A. Smith
- Department of Chemistry; Scripps Research; North Torrey Pines Road La Jolla CA 92037 USA
| | - Tian Qin
- Department of Chemistry; Scripps Research; North Torrey Pines Road La Jolla CA 92037 USA
| | - Phil S. Baran
- Department of Chemistry; Scripps Research; North Torrey Pines Road La Jolla CA 92037 USA
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40
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Bergmann AM, Dorn SK, Smith KB, Logan KM, Brown MK. Catalyst-Controlled 1,2- and 1,1-Arylboration of α-Alkyl Alkenyl Arenes. Angew Chem Int Ed Engl 2019; 58:1719-1723. [PMID: 30521697 DOI: 10.1002/anie.201812533] [Citation(s) in RCA: 89] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Indexed: 12/15/2022]
Abstract
Two methods are reported for the 1,2- and 1,1-arylboration of α-methyl vinyl arenes. In the case of 1,2-arylboration, the formation of a quaternary center occurred through a rare cross-coupling reaction of a tertiary organometallic complex. 1,1-Arylboration was enabled by catalyst optimization and occurred through a β-hydride elimination/reinsertion cascade. Enantioselective variants of both processes are presented as well as mechanistic investigations.
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Affiliation(s)
- Allison M Bergmann
- Department of Chemistry, Indiana University, 800 E. Kirkwood Avenue, Bloomington, IN, 47405, USA
| | - Stanna K Dorn
- Department of Chemistry, Indiana University, 800 E. Kirkwood Avenue, Bloomington, IN, 47405, USA
| | - Kevin B Smith
- Department of Chemistry, Indiana University, 800 E. Kirkwood Avenue, Bloomington, IN, 47405, USA
| | - Kaitlyn M Logan
- Department of Chemistry, Indiana University, 800 E. Kirkwood Avenue, Bloomington, IN, 47405, USA
| | - M Kevin Brown
- Department of Chemistry, Indiana University, 800 E. Kirkwood Avenue, Bloomington, IN, 47405, USA
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41
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Bergmann AM, Dorn SK, Smith KB, Logan KM, Brown MK. Catalyst‐Controlled 1,2‐ and 1,1‐Arylboration of α‐Alkyl Alkenyl Arenes. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201812533] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Allison M. Bergmann
- Department of Chemistry Indiana University 800 E. Kirkwood Avenue Bloomington IN 47405 USA
| | - Stanna K. Dorn
- Department of Chemistry Indiana University 800 E. Kirkwood Avenue Bloomington IN 47405 USA
| | - Kevin B. Smith
- Department of Chemistry Indiana University 800 E. Kirkwood Avenue Bloomington IN 47405 USA
| | - Kaitlyn M. Logan
- Department of Chemistry Indiana University 800 E. Kirkwood Avenue Bloomington IN 47405 USA
| | - M. Kevin Brown
- Department of Chemistry Indiana University 800 E. Kirkwood Avenue Bloomington IN 47405 USA
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42
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Coombs J, Perry D, Kwon DH, Thomas CM, Ess DH. Why Two Metals Are Better Than One for Heterodinuclear Cobalt–Zirconium-Catalyzed Kumada Coupling. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00449] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Jimmy Coombs
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, Utah 84602, United States
| | - Dalton Perry
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, Utah 84602, United States
| | - Doo-Hyun Kwon
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, Utah 84602, United States
| | - Christine M. Thomas
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio 43210, United States
| | - Daniel H. Ess
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, Utah 84602, United States
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43
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Liu P, Chen C, Cong X, Tang J, Zeng X. Chromium-catalyzed para-selective formation of quaternary carbon centers by alkylation of benzamide derivatives. Nat Commun 2018; 9:4637. [PMID: 30401829 PMCID: PMC6219510 DOI: 10.1038/s41467-018-07069-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Accepted: 10/09/2018] [Indexed: 01/01/2023] Open
Abstract
Selective creation of quaternary carbon centers has been a long-standing challenge in synthetic chemistry. We report here the chromium-catalyzed, para-selective formation of arylated quaternary carbon centers by alkylative reactions of benzamide derivatives with tertiary alkylmagnesium bromides at room temperature. The reaction, which was enabled by a low-cost chromium(III) salt combined with trimethylsilyl bromide, introduces a sterically bulky tertiary alkyl scaffold on the para-position of benzamide derivatives in a highly selective fashion without either isomerization of the tertiary alkyl group or formation of ortho-alkylated byproducts. Forming low-valent Cr species in situ by reaction of CrCl3 with t-BuMgBr accompanied by evolution of hydrogen can be considered, which serves as reactive species to promote the reaction. The para-alkylation likely occurs via a radical-type nucleophilic substitution of imino-coordination benzimidate intermediate.
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Affiliation(s)
- Pei Liu
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China
- Department of Applied Chemistry, School of Science, Northwestern Polytechnical University, Xi'an, 710072, China
- Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, 710054, China
| | - Changpeng Chen
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China
- Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, 710054, China
| | - Xuefeng Cong
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China
- Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, 710054, China
| | - Jinghua Tang
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China
- Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, 710054, China
| | - Xiaoming Zeng
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China.
- Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, 710054, China.
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44
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Li ZZ, Yu J, Wang LN, Chen SL, Sheng RL, Tang S. Cascade radical cyclization/cross-coupling of halobenzamides by synergistic Cu/Fe catalysis: An access to 7-tert-alkylated isoquinolinediones. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.09.036] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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45
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Wang X, Ma G, Peng Y, Pitsch CE, Moll BJ, Ly TD, Wang X, Gong H. Ni-Catalyzed Reductive Coupling of Electron-Rich Aryl Iodides with Tertiary Alkyl Halides. J Am Chem Soc 2018; 140:14490-14497. [DOI: 10.1021/jacs.8b09473] [Citation(s) in RCA: 136] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Xuan Wang
- School of Materials Science and Engineering, Center for Supramolecular Chemistry and Catalysis and Department of Chemistry, Shanghai University, 99 Shang-Da Road, Shanghai 200444, China
| | - Guobin Ma
- School of Materials Science and Engineering, Center for Supramolecular Chemistry and Catalysis and Department of Chemistry, Shanghai University, 99 Shang-Da Road, Shanghai 200444, China
| | - Yu Peng
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Chloe E. Pitsch
- Department of Chemistry, University of Colorado Denver, Campus Box 194,
P.O. Box 173364, Denver, Colorado 80217-3364, United States
| | - Brenda J. Moll
- Department of Chemistry, University of Colorado Denver, Campus Box 194,
P.O. Box 173364, Denver, Colorado 80217-3364, United States
| | - Thu D. Ly
- Department of Chemistry, University of Colorado Denver, Campus Box 194,
P.O. Box 173364, Denver, Colorado 80217-3364, United States
| | - Xiaotai Wang
- Department of Chemistry, University of Colorado Denver, Campus Box 194,
P.O. Box 173364, Denver, Colorado 80217-3364, United States
| | - Hegui Gong
- School of Materials Science and Engineering, Center for Supramolecular Chemistry and Catalysis and Department of Chemistry, Shanghai University, 99 Shang-Da Road, Shanghai 200444, China
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46
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Iwasaki T, Terahigashi S, Wang Y, Tanaka A, Zhao H, Fujimoto Y, Fukase K, Kambe N. Synthesis of Cyclopropane Fatty Acids by C( sp3)−C( sp3) Cross-Coupling Reaction and Formal Synthesis of α-Mycolic Acid. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800901] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Takanori Iwasaki
- Department of Applied Chemistry, Graduate School of Engineering; Osaka University, Suita; Osaka 565-0871 Japan
- Department of Chemistry and Biotechnology, Graduate School of Engineering; The University of Tokyo; 7-3-1 Hongo, Bunkyo-ku Tokyo 113-8656 Japan
| | - Shohei Terahigashi
- Department of Applied Chemistry, Graduate School of Engineering; Osaka University, Suita; Osaka 565-0871 Japan
| | - Yufei Wang
- Department of Applied Chemistry, Graduate School of Engineering; Osaka University, Suita; Osaka 565-0871 Japan
| | - Arisa Tanaka
- Department of Applied Chemistry, Graduate School of Engineering; Osaka University, Suita; Osaka 565-0871 Japan
| | - Hanqing Zhao
- Department of Applied Chemistry, Graduate School of Engineering; Osaka University, Suita; Osaka 565-0871 Japan
| | - Yukari Fujimoto
- Department of Chemistry, Faculty of Science and Technology; Keio University; 3-14-1 Hiyoshi, Kohoku-ku, Yokohama Kanagawa 223-8522 Japan
| | - Koichi Fukase
- Department of Chemistry, Graduate School of Science; Osaka University, Toyonaka; Osaka 560-0043 Japan
| | - Nobuaki Kambe
- Department of Applied Chemistry, Graduate School of Engineering; Osaka University, Suita; Osaka 565-0871 Japan
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47
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An extension of nickel-catalyzed reductive coupling between tertiary alkyl halides with allylic carbonates. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.07.057] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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48
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Nakamura K, Hara R, Sunada Y, Nishikata T. Radical-Organometallic Hybrid Reaction System Enabling Couplings between Tertiary-Alkyl Groups and 1-Alkenyl Groups. ACS Catal 2018. [DOI: 10.1021/acscatal.8b01572] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Kimiaki Nakamura
- Graduate School of Science and Engineering, Yamaguchi University, Ube, Yamaguchi 755-8611, Japan
| | - Reina Hara
- Graduate School of Science and Engineering, Yamaguchi University, Ube, Yamaguchi 755-8611, Japan
| | - Yusuke Sunada
- Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba Meguro-ku, Tokyo 153-8505, Japan
| | - Takashi Nishikata
- Graduate School of Science and Engineering, Yamaguchi University, Ube, Yamaguchi 755-8611, Japan
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49
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Iwasaki T, Shimizu R, Imanishi R, Kuniyasu H, Kambe N. Cross-coupling Reaction of Alkyl Halides with Alkyl Grignard Reagents Catalyzed by Cp-Iron Complexes in the Presence of 1,3-Butadiene. CHEM LETT 2018. [DOI: 10.1246/cl.180201] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Takanori Iwasaki
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Ryohei Shimizu
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Reiko Imanishi
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Hitoshi Kuniyasu
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Nobuaki Kambe
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
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50
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Qiao L, Cao X, Chai K, Shen J, Xu J, Zhang P. Remote radical halogenation of aminoquinolines with aqueous hydrogen halide (HX) and oxone. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.04.036] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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