1
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Lee S, Kang G, Han S. Development of an Easy-To-Handle Redox Active Group for Alcohols: Catalytic Transformation of Tertiary Alcohols to Nitriles. Org Lett 2024. [PMID: 38924766 DOI: 10.1021/acs.orglett.4c01580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/28/2024]
Abstract
The generation of radical intermediates via SET-mediated deoxygenation of activated alcohol derivatives is desirable, as alcohols can be utilized in various radical-mediated reactions. Herein, we introduce α-N-phthalimido-oxy isobutyrate (NPIB) as a novel activating group for alcohols. Essentially, it is a more chemically robust alternative to Overman's N-phthalimidoyl oxalate group. The utility of the NPIB group is showcased in the conversion of tertiary alcohols to nitriles under Ir/Cu dual catalysts and in the presence of TMSCN upon blue LED irradiation. With our newly developed NPIB handle, the reactivities of N-hydroxyphthalimide esters derived from carboxylic acids would be achievable with naturally and commercially more abundant alcohol substrates.
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Affiliation(s)
- Seunghee Lee
- Department of Chemistry, Korea Advanced Institute of Science & Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Gyumin Kang
- Department of Chemistry, Korea Advanced Institute of Science & Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Sunkyu Han
- Department of Chemistry, Korea Advanced Institute of Science & Technology (KAIST), Daejeon 34141, Republic of Korea
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2
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Baumann JE, Chung CP, Lalic G. Stereoselective Copper-Catalyzed Olefination of Imines. Angew Chem Int Ed Engl 2024; 63:e202316521. [PMID: 38100274 PMCID: PMC10977923 DOI: 10.1002/anie.202316521] [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: 11/01/2023] [Revised: 12/10/2023] [Accepted: 12/12/2023] [Indexed: 12/17/2023]
Abstract
Alkenes are an important class of organic molecules found among synthetic intermediates and bioactive compounds. They are commonly synthesized through stoichiometric Wittig-type olefination of carbonyls and imines, using ylides or their equivalents. Despite the importance of Wittig-type olefination reactions, their catalytic variants remain underdeveloped. We explored the use of transition metal catalysis to form ylide equivalents from readily available starting materials. Our investigation led to a new copper-catalyzed olefination of imines with alkenyl boronate esters as coupling partners. We identified a heterobimetallic complex, obtained by hydrocupration of the alkenyl boronate esters, as the key catalytic intermediate that serves as an ylide equivalent. The high E-selectivity observed in the reaction is due to the stereoselective addition of this intermediate to an imine, followed by stereospecific anti-elimination.
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Affiliation(s)
- James E Baumann
- Department of Chemistry, University of Washington, 109 Bagley Hall, 98195, Seattle, WA, USA
| | - Crystal P Chung
- Department of Chemistry, University of Washington, 109 Bagley Hall, 98195, Seattle, WA, USA
| | - Gojko Lalic
- Department of Chemistry, University of Washington, 109 Bagley Hall, 98195, Seattle, WA, USA
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3
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Wei Y, Lin LQH, Lee BC, Koh MJ. Recent Advances in First-Row Transition Metal-Catalyzed Reductive Coupling Reactions for π-Bond Functionalization and C-Glycosylation. Acc Chem Res 2023; 56:3292-3312. [PMID: 37917928 DOI: 10.1021/acs.accounts.3c00531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2023]
Abstract
ConspectusEfficient construction of ubiquitous carbon-carbon bonds between two electrophiles has garnered interest in recent decades, particularly if it is mediated by nonprecious, first-row transition metals. Reductive coupling has advantages over traditional cross-coupling by obviating the need for stoichiometric air- and moisture-sensitive organometallic reagents. By harnessing transition metal-catalyzed reductive coupling as a powerful tool, intricate molecular architectures can be readily assembled through the installation of two C-C bonds across π systems (alkenes/alkynes) via reaction with two appropriate electrophiles. Despite advances in reductive alkene difunctionalization, there remains significant potential for the discovery of novel reaction pathways. In this regard, development of reductive protocols that enable the union of challenging alkyl/alkynyl electrophiles in high regio- and chemoselectivity remains a highly sought-after goal.Apart from π-bond functionalization, reductive coupling has found application in carbohydrate chemistry, particularly in the synthesis of valuable C-glycosyl compounds. In this vein, suitable glycosyl donors can be used to generate reactive glycosyl radical intermediates under reductive conditions. Through elaborately designed reactions, these intermediates can be trapped to furnish pharmaceutically relevant glycoconjugates. Consequently, diversification in C-glycosyl compound synthesis using first-row transition metal catalysis holds strong appeal.In this Account, we summarize our efforts in the development of first-row transition metal-catalyzed reductive coupling reactions for applications in alkene/alkyne functionalization and C-glycosylation. We will first discuss the nickel (Ni)-catalyzed reductive difunctionalization of alkenes, aided by an 8-aminoquinoline (AQ) directing auxiliary. Next, we highlight the Ni-catalyzed hydroalkylation of alkenyl amides tethered with a similar AQ-derived directing auxiliary. Lastly, we discuss an efficient synthesis of 1,3-enynes involving site- and stereoselective reductive coupling of terminal alkynes with alkynyl halides and NHPI esters.Beyond alkene dicarbofunctionalization, we extended the paradigm of transition metal-catalyzed reductive coupling toward the construction of C-glycosidic linkages in carbohydrates. By employing an earth-abundant iron (Fe)-based catalyst, we show that useful glycosyl radicals can be generated from glycosyl chlorides under reductive conditions. These intermediates can be captured in C-C bond formation to furnish valuable C-aryl, C-alkenyl, and C-alkynyl glycosyl compounds with high diastereoselectivity. Our Ni-catalyzed multicomponent union of glycosyl chlorides, aryl/alkyl iodides, and isobutyl chloroformate under reductive conditions led to the stereoselective synthesis of C-acyl glycosides. In addition to Fe and Ni, we discovered a Ti-catalyzed/Mn-promoted synthetic route to access C-alkyl and C-alkenyl glycosyl compounds, through the reaction of glycosyl chlorides with electron-deficient alkenes/alkynes. We further developed an electron donor-acceptor (EDA) photoactivation system leveraging decarboxylative and deaminative strategies for C-glycosylation under Ni catalysis. This approach has been demonstrated to selectively activate carboxyl and amino motifs to furnish glycopeptide conjugates. Finally, through two distinct catalytic transformations of bench-stable heteroaryl glycosyl sulfones, we achieved stereodivergent access to both α- and β-anomers of C-aryl glycosides, one of which involves a Ni-catalyzed reductive coupling with aryl iodides.The findings presented in this Account are anticipated to have far-reaching implications beyond our research. We foresee that these results will pave the way for new transformations founded on the concept of reductive coupling, leading to the discovery of novel applications in the future.
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Affiliation(s)
- Yi Wei
- Department of Chemistry, National University of Singapore, 4 Science Drive 2, Republic of Singapore, 117544
| | - Leroy Qi Hao Lin
- Department of Chemistry, National University of Singapore, 4 Science Drive 2, Republic of Singapore, 117544
| | - Boon Chong Lee
- Department of Chemistry, National University of Singapore, 4 Science Drive 2, Republic of Singapore, 117544
| | - Ming Joo Koh
- Department of Chemistry, National University of Singapore, 4 Science Drive 2, Republic of Singapore, 117544
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4
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Gao MY, Gosmini C. Cobalt-Catalyzed Reductive Cross-Coupling To Construct Csp 3-Csp 3 Bonds via Csp 3-S and Csp 3-X Bonds Activation. Org Lett 2023; 25:7689-7693. [PMID: 37851934 DOI: 10.1021/acs.orglett.3c02993] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2023]
Abstract
A cross-electrophilic coupling of benzyl sulfonium salts with alkyl halides forming Csp3-Csp3 bonds is described by using a Co-based catalytic system. The activation of the stable Csp3-S bond of benzyl sulfonium salts under mild reaction conditions leads to various functionalized alkyl derivatives. Preliminary mechanistic studies suggest the involvement of alkyl radicals formed from both alkyl halides and benzyl sulfoniums through a single electron transfer.
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Affiliation(s)
- Meng-Yu Gao
- Laboratoire de Chimie Moléculaire, École Polytechnique, Institut Polytechnique de Paris, CNRS Route de Saclay 91128 Palaiseau cedex, France
| | - Corinne Gosmini
- Laboratoire de Chimie Moléculaire, École Polytechnique, Institut Polytechnique de Paris, CNRS Route de Saclay 91128 Palaiseau cedex, France
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5
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Yen C, Liu Y, Liu S. Palladium‐catalyzed vinylation of cyclohexenes using a directing‐group strategy. J CHIN CHEM SOC-TAIP 2023. [DOI: 10.1002/jccs.202200529] [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]
Affiliation(s)
- Chao‐Ting Yen
- Department of Chemistry National Taiwan University Taipei Taiwan
| | - Yi‐Hung Liu
- Department of Chemistry National Taiwan University Taipei Taiwan
| | - Shiuh‐Tzung Liu
- Department of Chemistry National Taiwan University Taipei Taiwan
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6
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Villo P, Shatskiy A, Kärkäs MD, Lundberg H. Electrosynthetic C-O Bond Activation in Alcohols and Alcohol Derivatives. Angew Chem Int Ed Engl 2023; 62:e202211952. [PMID: 36278406 PMCID: PMC10107720 DOI: 10.1002/anie.202211952] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Indexed: 11/07/2022]
Abstract
Alcohols and their derivatives are ubiquitous and versatile motifs in organic synthesis. Deoxygenative transformations of these compounds are often challenging due to the thermodynamic penalty associated with the cleavage of the C-O bond. However, electrochemically driven redox events have been shown to facilitate the C-O bond cleavage in alcohols and their derivatives either through direct electron transfer or through the use of electron transfer mediators and electroactive catalysts. Herein, a comprehensive overview of preparative electrochemically mediated protocols for C-O bond activation and functionalization is detailed, including direct and indirect electrosynthetic methods, as well as photoelectrochemical strategies.
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Affiliation(s)
- Piret Villo
- Department of Chemistry, KTH Royal Institute of Technology, SE-100 44, Stockholm, Sweden
| | - Andrey Shatskiy
- Department of Chemistry, KTH Royal Institute of Technology, SE-100 44, Stockholm, Sweden
| | - Markus D Kärkäs
- Department of Chemistry, KTH Royal Institute of Technology, SE-100 44, Stockholm, Sweden
| | - Helena Lundberg
- Department of Chemistry, KTH Royal Institute of Technology, SE-100 44, Stockholm, Sweden
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7
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Chen Q, You J, Tian T, Li Z, Kashihara M, Mori H, Nishihara Y. Nickel-Catalyzed Decarbonylative Reductive Alkylation of Aroyl Fluorides with Alkyl Bromides. Org Lett 2022; 24:9259-9263. [PMID: 36516299 DOI: 10.1021/acs.orglett.2c03823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
This paper describes the nickel-catalyzed reductive alkylation of aroyl fluorides with alkyl bromides in a decarbonylative manner. In this reaction, various functional groups are well tolerated and the C(sp2)-C(sp3) bond can be constructed directly without the use of organometallic reagents. The present reaction is a cross-electrophile coupling via the radical pathway, affording the corresponding alkylarenes in moderate to good yields.
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Affiliation(s)
- Qiang Chen
- Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
| | - Jingwen You
- Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
| | - Tian Tian
- Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
| | - Zhenyao Li
- Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
| | - Myuto Kashihara
- Research Institute for Interdisciplinary Science, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
| | - Hiroki Mori
- Research Institute for Interdisciplinary Science, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
| | - Yasushi Nishihara
- Research Institute for Interdisciplinary Science, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
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8
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Duan A, Xiao F, Lan Y, Niu L. Mechanistic views and computational studies on transition-metal-catalyzed reductive coupling reactions. Chem Soc Rev 2022; 51:9986-10015. [PMID: 36374254 DOI: 10.1039/d2cs00371f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Transition-metal-catalyzed reductive coupling reactions have been considered as a powerful tool to convert two electrophiles into value-added products. Numerous related reports have shown the fascinating potential. Mechanistic studies, especially theoretical studies, can provide important implications for the design of novel reductive coupling reactions. In this review, we summarize the representative advancements in theoretical studies on transition-metal-catalyzed reductive coupling reactions and systematically elaborate the mechanisms for the key steps of reductive coupling reactions. The activation modes of electrophiles and the deep insights of selectivity generation are mechanistically discussed. In addition, the mechanism of the reduction of high-oxidation-state catalysts and further construction of new chemical bonds are also described in detail.
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Affiliation(s)
- Abing Duan
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China.
| | - Fengjiao Xiao
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China.
| | - Yu Lan
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou, Henan, China. .,School of Chemistry and Chemical Engineering, Chongqing Key Laboratory of Theoretical and Computational Chemistry, Chongqing University, Chongqing 400030, China
| | - Linbin Niu
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou, Henan, China.
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9
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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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10
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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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11
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Chen Y, Gong H, Cheng L, Lin Q. Recent Progress on Transition-Metal-Mediated Reductive C(sp3)–O Bond Radical Addition and Coupling Reactions. SYNTHESIS-STUTTGART 2022. [DOI: 10.1055/a-1848-3005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
AbstractIn this short review, we summarize the recent developments on thermo-driven C(sp3)–O bond radical scission methods and their applications in the construction of C(sp3)–C bonds via conjugate addition with activated double bonds and reductive coupling mediated by economic 3d metals, in particular nickel. We have arranged the review based on three approaches for C(sp3)–O bond radical scission (vide infra). After generating the radical intermediates, their subsequent transformation into C(sp3)–C bonds enabled by C(sp3)–O cross-electrophile coupling with carbon electrophiles is discussed in detail.1 Introduction2 Direct Single-Electron Transfer to a C(sp3)–O Bond3 Radical Scission of Activated C(sp3)–O Bonds via Single-Electron Transfer to Protecting Groups4 In Situ Activation of Alcohols5 Summary and Outlook
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Affiliation(s)
- Yunrong Chen
- Center for Supramolecular Chemistry and Catalysis and Department of Chemistry, Shanghai University
| | - Hegui Gong
- Center for Supramolecular Chemistry and Catalysis and Department of Chemistry, Shanghai University
| | - Li Cheng
- School of Materials Science and Engineering, Shanghai University
| | - Quan Lin
- School of Materials Science and Engineering, Shanghai University
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12
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Ye Y, Qi X, Xu B, Lin Y, Xiang H, Zou L, Ye XY, Xie T. Nickel-catalyzed cross-electrophile allylation of vinyl bromides and the modification of anti-tumour natural medicine β-elemene. Chem Sci 2022; 13:6959-6966. [PMID: 35774167 PMCID: PMC9200125 DOI: 10.1039/d2sc02054h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2022] [Accepted: 05/12/2022] [Indexed: 12/17/2022] Open
Abstract
Herein, we present a facile and efficient allylation method via Ni-catalyzed cross-electrophile coupling of readily available allylic acetates with a variety of substituted alkenyl bromides using zinc as the terminal reductant. This Ni-catalyzed modular approach displays excellent functional group tolerance and a broad substrate scope, which the creation of a series of 1,4-dienes including several structurally complex natural products and pharmaceutical motifs. Moreover, the coupling strategy has the potential to realize enantiomeric control. The practicality of this transformation is demonstrated through the potent modification of the naturally antitumor active molecule β-elemene. Herein, we present a facile and efficient allylation method via Ni-catalyzed cross-electrophile coupling of readily available allylic acetates with a variety of substituted alkenyl bromides using zinc as the terminal reductant.![]()
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Affiliation(s)
- Yang Ye
- School of Pharmacy, Hangzhou Normal University Hangzhou Zhejiang 311121 PR China .,Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University Hangzhou Zhejiang 311121 PR China
| | - Xiang Qi
- School of Pharmacy, Hangzhou Normal University Hangzhou Zhejiang 311121 PR China .,Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University Hangzhou Zhejiang 311121 PR China
| | - Bing Xu
- School of Pharmacy, Hangzhou Normal University Hangzhou Zhejiang 311121 PR China .,Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University Hangzhou Zhejiang 311121 PR China
| | - Ying Lin
- School of Pharmacy, Hangzhou Normal University Hangzhou Zhejiang 311121 PR China .,Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University Hangzhou Zhejiang 311121 PR China
| | - Huan Xiang
- School of Pharmacy, Hangzhou Normal University Hangzhou Zhejiang 311121 PR China .,Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University Hangzhou Zhejiang 311121 PR China
| | - Liang Zou
- School of Pharmacy, Hangzhou Normal University Hangzhou Zhejiang 311121 PR China .,Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University Hangzhou Zhejiang 311121 PR China
| | - Xiang-Yang Ye
- School of Pharmacy, Hangzhou Normal University Hangzhou Zhejiang 311121 PR China .,Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University Hangzhou Zhejiang 311121 PR China
| | - Tian Xie
- School of Pharmacy, Hangzhou Normal University Hangzhou Zhejiang 311121 PR China .,Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University Hangzhou Zhejiang 311121 PR China
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13
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Anwar K, Merkens K, Aguilar Troyano FJ, Gómez-Suárez A. Radical Deoxyfunctionalisation Strategies. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200330] [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)
- Khadijah Anwar
- Bergische Universität Wuppertal: Bergische Universitat Wuppertal Organic Chemistry GERMANY
| | - Kay Merkens
- Bergische Universität Wuppertal: Bergische Universitat Wuppertal Organic Chemstry GERMANY
| | | | - Adrián Gómez-Suárez
- Bergische Universitat Wuppertal Organische Chemie Gaußstr. 20 42119 Wuppertal GERMANY
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14
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Guo HM, He BQ, Wu X. Direct Photoexcitation of Xanthate Anions for Deoxygenative Alkenylation of Alcohols. Org Lett 2022; 24:3199-3204. [PMID: 35467887 DOI: 10.1021/acs.orglett.2c00889] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
In this report, we identify xanthate salts as a unique class of visible-light-excitable alkyl radical precursors that act simultaneously as strong photoreductants and alkyl radical sources. Upon direct photoexcitation of xanthate anions, efficient deoxygenative alkenylation and alkylation of a wide range of primary, secondary, and tertiary alcohols have been achieved via a one-pot protocol, avoiding any photocatalysts. This method exhibits a broad substrate scope and good functional group tolerance, enabling late-stage functionalization of complex molecules.
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Affiliation(s)
- Hong-Mei Guo
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Bin-Qing He
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Xuesong Wu
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
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15
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Wu F, Ye C, Tong W. Nickel-Catalyzed Reductive Cross-Coupling of Oxalates Derived from α-Hydroxy Carbonyls with Vinyl Bromides. SYNTHESIS-STUTTGART 2022. [DOI: 10.1055/s-0040-1719881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
AbstractA nickel-catalyzed cross-electrophile coupling is disclosed in which a range of vinyl bromides were utilized as electrophiles with oxalates derived from α-hydroxy carbonyls as precursors to carbonyl radical coupling partners. This method is compatible with a broad range of functional groups, providing a complementary solution for the construction of β,γ-unsaturated carbonyl compounds.
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Affiliation(s)
- Fan Wu
- Institute of Drug Discovery Technology and Qian Xuesen Collaborative Research Center of Astrochemistry and Space Life Sciences, Ningbo University
| | - Cheng Ye
- School of Materials Science and Engineering, Department of Chemistry, Shanghai University
| | - Weiqi Tong
- School of Materials Science and Engineering, Department of Chemistry, Shanghai University
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16
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Xie H, Wang S, Wang Y, Guo P, Shu XZ. Ti-Catalyzed Reductive Dehydroxylative Vinylation of Tertiary Alcohols. ACS Catal 2022. [DOI: 10.1021/acscatal.1c05530] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Hao Xie
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), College of Chemistry and Chemical Engineering, Lanzhou University, 222 South Tianshui Road, Lanzhou 730000, People’s Republic of China
| | - Sheng Wang
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), College of Chemistry and Chemical Engineering, Lanzhou University, 222 South Tianshui Road, Lanzhou 730000, People’s Republic of China
| | - Yuquan Wang
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), College of Chemistry and Chemical Engineering, Lanzhou University, 222 South Tianshui Road, Lanzhou 730000, People’s Republic of China
| | - Peng Guo
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), College of Chemistry and Chemical Engineering, Lanzhou University, 222 South Tianshui Road, Lanzhou 730000, People’s Republic of China
| | - Xing-Zhong Shu
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), College of Chemistry and Chemical Engineering, Lanzhou University, 222 South Tianshui Road, Lanzhou 730000, People’s Republic of China
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17
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Cu-catalyzed coupling of unactivated tertiary alkyl alcohols with thiols via C–O bond cleavage. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2021.153604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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18
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Guan YQ, Wang TZ, Qiao JF, Chen Z, Bai Z, Liang YF. Iron-catalysed reductive coupling for the synthesis of polyfluorinated compounds. Chem Commun (Camb) 2022; 58:13915-13918. [DOI: 10.1039/d2cc06022a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Abstract
Iron-catalysed reductive cross-coupling of difluorobromo acetic acid derivatives with trifluoromethyl olefins to afford polyfluorinated molecules, containing a difluorenyl and difluoroalkyl group, with a broad substrate scope.
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Affiliation(s)
- Yu-Qiu Guan
- Center for Molecular Science and Engineering, College of Sciences, Northeastern University, Shenyang 110819, China
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Tian-Zhang Wang
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Jia-Fan Qiao
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Zhangpei Chen
- Center for Molecular Science and Engineering, College of Sciences, Northeastern University, Shenyang 110819, China
| | - Zhushuang Bai
- School of Pharmacy and Pharmaceutical Science & Institute of Materia Medica, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan 250117, China
| | - Yu-Feng Liang
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
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19
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Xu B, Lin Y, Ye Y, Xu L, Xie T, Ye XY. Benzyl thioether formation merging copper catalysis. RSC Adv 2021; 12:692-697. [PMID: 35425124 PMCID: PMC8697992 DOI: 10.1039/d1ra08015f] [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: 11/01/2021] [Accepted: 12/20/2021] [Indexed: 11/26/2022] Open
Abstract
A novel copper-catalyzed thioetherification reaction has been developed to afford benzyl thioethers in moderate to excellent yields. Under the mild and easy-to-operate conditions, a variety of thioethers are efficiently prepared from readily available benzyl alcohols (primary, secondary, and tertiary) and thiols in the presence of Cu(OTf)2 as the Lewis acid catalysis. This C-S bond formation protocol furnishes exceptional chemoselectivity, and the preliminary mechanism studies show that the reaction should proceed through a Lewis-acid-mediated SN1-type nucleophilic attack of the carbocations formed in situ.
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Affiliation(s)
- Bing Xu
- School of Pharmacy, Hangzhou Normal University Hangzhou Zhejiang 311121 PR China
- Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University Hangzhou Zhejiang 311121 PR China
| | - Ying Lin
- School of Pharmacy, Hangzhou Normal University Hangzhou Zhejiang 311121 PR China
- Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University Hangzhou Zhejiang 311121 PR China
| | - Yang Ye
- School of Pharmacy, Hangzhou Normal University Hangzhou Zhejiang 311121 PR China
- Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University Hangzhou Zhejiang 311121 PR China
| | - Li Xu
- School of Pharmacy, Hangzhou Normal University Hangzhou Zhejiang 311121 PR China
- Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University Hangzhou Zhejiang 311121 PR China
| | - Tian Xie
- School of Pharmacy, Hangzhou Normal University Hangzhou Zhejiang 311121 PR China
- Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University Hangzhou Zhejiang 311121 PR China
| | - Xiang-Yang Ye
- School of Pharmacy, Hangzhou Normal University Hangzhou Zhejiang 311121 PR China
- Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University Hangzhou Zhejiang 311121 PR China
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20
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Ye Y, Liu J, Xu B, Jiang S, Bai R, Li S, Xie T, Ye XY. Nickel-catalyzed enantioselective 1,2-vinylboration of styrenes. Chem Sci 2021; 12:13209-13215. [PMID: 34745552 PMCID: PMC8513998 DOI: 10.1039/d1sc04071e] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2021] [Accepted: 09/07/2021] [Indexed: 11/24/2022] Open
Abstract
A novel nickel-catalyzed asymmetric 1,2-vinylboration reaction has been developed to afford benzylic alkenylboration products with high yields and excellent enantioselectivities by using a chiral bisoxazoline ligand. Under optimized conditions, a wide variety of chiral 2-boryl-1,1-arylvinylalkanes are efficiently prepared from readily available olefins and vinyl halides in the presence of bis(pinacolato)diboron as the boron source in a mild and easy-to-operate manner. This three-component cascade protocol furnishes exceptional chemo- and stereoselectivity, and its usefulness is illustrated by its application in asymmetric modifications of several structurally complex natural products and pharmaceuticals. A novel nickel-catalyzed asymmetric 1,2-vinylboration reaction has been developed to afford benzylic alkenylboration products with high yields and excellent enantioselectivities by using a chiral bisoxazoline ligand.![]()
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Affiliation(s)
- Yang Ye
- School of Pharmacy, Hangzhou Normal University Hangzhou Zhejiang 311121 PR China .,Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University Hangzhou Zhejiang 311121 PR China
| | - Jiandong Liu
- Center for Supramolecular Chemistry and Catalysis, Department of Chemistry, Shanghai University Shanghai 200444 PR China
| | - Bing Xu
- School of Pharmacy, Hangzhou Normal University Hangzhou Zhejiang 311121 PR China .,Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University Hangzhou Zhejiang 311121 PR China
| | - Songwei Jiang
- School of Pharmacy, Hangzhou Normal University Hangzhou Zhejiang 311121 PR China .,Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University Hangzhou Zhejiang 311121 PR China
| | - Renren Bai
- School of Pharmacy, Hangzhou Normal University Hangzhou Zhejiang 311121 PR China .,Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University Hangzhou Zhejiang 311121 PR China
| | - Shijun Li
- College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University Hangzhou Zhejiang 311121 PR China
| | - Tian Xie
- School of Pharmacy, Hangzhou Normal University Hangzhou Zhejiang 311121 PR China .,Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University Hangzhou Zhejiang 311121 PR China
| | - Xiang-Yang Ye
- School of Pharmacy, Hangzhou Normal University Hangzhou Zhejiang 311121 PR China .,Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University Hangzhou Zhejiang 311121 PR China
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21
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Vincent É, Brioche J. Synthesis of Alkyl Fluorides by Silver‐Catalyzed Radical Decarboxylative Fluorination of Cesium Oxalates. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100344] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Émilie Vincent
- INSA Rouen UNIROUEN CNRS COBRA (UMR 6014) Normandie University 76000 Rouen France
| | - Julien Brioche
- INSA Rouen UNIROUEN CNRS COBRA (UMR 6014) Normandie University 76000 Rouen France
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22
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Yu X, Zheng H, Zhao H, Lee BC, Koh MJ. Iron‐Catalyzed Regioselective Alkenylboration of Olefins. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202012607] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Xiaolong Yu
- Department of Chemistry National University of Singapore 12 Science Drive 2 117549 Singapore Republic of Singapore
| | - Hongling Zheng
- Department of Chemistry National University of Singapore 12 Science Drive 2 117549 Singapore Republic of Singapore
| | - Haonan Zhao
- Department of Chemistry National University of Singapore 12 Science Drive 2 117549 Singapore Republic of Singapore
| | - Boon Chong Lee
- Department of Chemistry National University of Singapore 12 Science Drive 2 117549 Singapore Republic of Singapore
| | - Ming Joo Koh
- Department of Chemistry National University of Singapore 12 Science Drive 2 117549 Singapore Republic of Singapore
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23
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Liu ZY, Cook SP. Interrupting the Barton–McCombie Reaction: Aqueous Deoxygenative Trifluoromethylation of O-Alkyl Thiocarbonates. Org Lett 2021; 23:808-813. [DOI: 10.1021/acs.orglett.0c04039] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Zhi-Yun Liu
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405-7102, United States
| | - Silas P. Cook
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405-7102, United States
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24
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Pei G, Xu W, Li J. Iron- and zinc-mediated reductive coupling of styrenes and alkyl bromides: mechanistic investigation using DFT calculations. Org Chem Front 2021. [DOI: 10.1039/d1qo00386k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
DFT calculations were performed to explore the mechanism for iron- and zinc-mediated reductive coupling of styrenes and alkyl bromides.
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Affiliation(s)
- Guojing Pei
- College of Chemistry and Materials Science
- Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications
- Jinan University
- Guangzhou
- P. R. China
| | - Wan Xu
- College of Chemistry and Materials Science
- Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications
- Jinan University
- Guangzhou
- P. R. China
| | - Juan Li
- College of Chemistry and Materials Science
- Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications
- Jinan University
- Guangzhou
- P. R. China
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25
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Lai SZ, Yang YM, Xu H, Tang ZY, Luo Z. Photoinduced Deaminative Coupling of Alkylpyridium Salts with Terminal Arylalkynes. J Org Chem 2020; 85:15638-15644. [PMID: 33118349 DOI: 10.1021/acs.joc.0c01928] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
A novel and simple Z-alkene synthesis by the photocatalyzed coupling reactions of alkylpyridium salts, which were prepared from primary amines, with terminal aryl alkynes at room temperature is reported here. A wide range of primary amines, which contain different functional groups, were tolerated under these conditions. The mild reaction conditions, broad substrate scope, functional group tolerance, and operational simplicity make this deaminative coupling reaction a valuable method in organic syntheses.
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Affiliation(s)
- Shu-Zhen Lai
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China
| | - Yu-Ming Yang
- School of Pharmaceutical Science (Shenzhen), Sun Yat-sen University, Guangzhou 510275, China.,College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China
| | - Hai Xu
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China
| | - Zhen-Yu Tang
- School of Pharmaceutical Science (Shenzhen), Sun Yat-sen University, Guangzhou 510275, China.,College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China
| | - Zhuangzhu Luo
- School of Material, Sun Yat-sen University, Guangzhou 510275, China
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26
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Yu X, Zheng H, Zhao H, Lee BC, Koh MJ. Iron‐Catalyzed Regioselective Alkenylboration of Olefins. Angew Chem Int Ed Engl 2020; 60:2104-2109. [DOI: 10.1002/anie.202012607] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Indexed: 11/07/2022]
Affiliation(s)
- Xiaolong Yu
- Department of Chemistry National University of Singapore 12 Science Drive 2 117549 Singapore Republic of Singapore
| | - Hongling Zheng
- Department of Chemistry National University of Singapore 12 Science Drive 2 117549 Singapore Republic of Singapore
| | - Haonan Zhao
- Department of Chemistry National University of Singapore 12 Science Drive 2 117549 Singapore Republic of Singapore
| | - Boon Chong Lee
- Department of Chemistry National University of Singapore 12 Science Drive 2 117549 Singapore Republic of Singapore
| | - Ming Joo Koh
- Department of Chemistry National University of Singapore 12 Science Drive 2 117549 Singapore Republic of Singapore
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27
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Liu J, Ye Y, Sessler JL, Gong H. Cross-Electrophile Couplings of Activated and Sterically Hindered Halides and Alcohol Derivatives. Acc Chem Res 2020; 53:1833-1845. [PMID: 32840998 DOI: 10.1021/acs.accounts.0c00291] [Citation(s) in RCA: 164] [Impact Index Per Article: 41.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Transition metal catalyzed cross-electrophile coupling of alkyl electrophiles has evolved into a privileged strategy that permits the facile construction of valuable C(sp3)-C bonds. Numerous elegant Ni-catalyzed coupling methods, for example, arylation, allylation, acylation, and vinylation of primary and secondary alkyl halides have been developed. This prior work has provided important mechanistic insights into the selectivity and reactivity of the coupling partners, which are largely dictated by both the catalysts and the reactants. In spite of the advances made to date, a number of challenging issues remain, including (1) achieving stereoselective syntheses of C-C bonds that rely primarily on functionalized or activated alkyl precursors, (2) diversifying the electrophiles, and (3) gaining insights into the underlying reaction mechanisms.In this Account, we summarize a number of Ni- and Fe-catalyzed reductive C-C bond forming methods developed in our laboratory, which have allowed us to couple activated, sterically hindered tertiary alkyl and C(sp3)-O bond electrophiles and to access methylated and trifluoromethylated products, esters, C-glycosides, and quaternary carbon centers. We will begin with a brief discussion of Ni-catalyzed chemoselective construction of unactivated alkyl-alkyl bonds, with focus on the effects of ligands and reductants, along with leaving group-directed reactivities of alkyl halides, and the role they play in promoting the reductive coupling of activated electrophiles, including methyl, trifluoromethyl, and glycosyl electrophiles, and chloroformates. Matching the reactivities of these electrophiles with suitable coupling partners is considered essential for success; this is something that can be tuned by means of appropriate Ni catalysts. Second, we will detail how tuning the steric and electronic effects of nickel catalysts with labile pyridine-type ligands and additives (primarily MgCl2) permits effective creation of arylated all-carbon quaternary centers through the coupling of aryl halides with sterically encumbered tertiary alkyl halides. In contrast, the use of bulkier bipyridine and terpyridine ligands permits the incorporation of relative small-sized acyl and allyl groups into acylated and allylated all-carbon quaternary centers. Finally, we will show how the knowledge gained with halide electrophiles enabled us to develop methods that permit the coupling of tertiary alkyl oxalates with allyl, aryl, and vinyl electrophiles, wherein Barton C-O bond radical fragmentation is mediated by Zn and MgCl2 and promoted by Ni catalysts. The same protocol is applicable to the arylation of secondary alkyl oxalates derived from α-hydroxyl carbonyl substrates, which involves the formation of relatively stable α-carbonyl carbon centered radicals. Thus, this Account not only summarizes synthetic methods that allow formation of valuable C-C bonds using challenging electrophiles but also provides insight into the relationship between the structure and reactivity of the substrates and catalysts, as well as the effects of additives.
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Affiliation(s)
- Jiandong Liu
- Center for Supramolecular Chemistry and Catalysis, Department of Chemistry and Institute for the Conservation of Cultural Heritage, Shanghai University, Shanghai 200444, China
| | - Yang Ye
- Center for Supramolecular Chemistry and Catalysis, Department of Chemistry and Institute for the Conservation of Cultural Heritage, Shanghai University, Shanghai 200444, China
| | - Jonathan L. Sessler
- Center for Supramolecular Chemistry and Catalysis, Department of Chemistry and Institute for the Conservation of Cultural Heritage, Shanghai University, Shanghai 200444, China
| | - Hegui Gong
- Center for Supramolecular Chemistry and Catalysis, Department of Chemistry and Institute for the Conservation of Cultural Heritage, Shanghai University, Shanghai 200444, China
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28
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Abstract
The synthesis of alkenes (olefins) is a central subject in the synthetic community. The transition-metal-catalyzed reductive cross-coupling of vinyl electrophiles has emerged as a promising tool to produce alkenes with improved flexibility, structural complexity, and functionality tolerance. In this review, we summarized the progress in this field with respect to cross-electrophile couplings and reductive Heck reactions using vinyl electrophiles.1 Introduction2 Cross-Electrophile Coupling of Vinyl Electrophiles3 Reductive Heck Reaction of Vinyl Electrophiles4 Summary and Outlook
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Affiliation(s)
- Xing-Zhong Shu
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), College of Chemistry and Chemical Engineering, Lanzhou University
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29
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Somerville RJ, Odena C, Obst MF, Hazari N, Hopmann KH, Martin R. Ni(I)-Alkyl Complexes Bearing Phenanthroline Ligands: Experimental Evidence for CO 2 Insertion at Ni(I) Centers. J Am Chem Soc 2020; 142:10936-10941. [PMID: 32520556 PMCID: PMC7351122 DOI: 10.1021/jacs.0c04695] [Citation(s) in RCA: 54] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Although the catalytic carboxylation of unactivated alkyl electrophiles has reached remarkable levels of sophistication, the intermediacy of (phenanthroline)Ni(I)-alkyl species-complexes proposed in numerous Ni-catalyzed reductive cross-coupling reactions-has been subject to speculation. Herein we report the synthesis of such elusive (phenanthroline)Ni(I) species and their reactivity with CO2, allowing us to address a long-standing question related to Ni-catalyzed carboxylation reactions.
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Affiliation(s)
- Rosie J Somerville
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain.,Departament de Quı́mica Analı́tica i Quı́mica Orgànica, Universitat Rovira i Virgili, c/Marcel·lı́ Domingo 1, 43007 Tarragona, Spain
| | - Carlota Odena
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain.,Departament de Quı́mica Analı́tica i Quı́mica Orgànica, Universitat Rovira i Virgili, c/Marcel·lı́ Domingo 1, 43007 Tarragona, Spain
| | - Marc F Obst
- Hylleraas Center for Quantum Molecular Sciences, Department of Chemistry, UiT The Arctic University of Norway, N-9307 Tromsø, Norway
| | - Nilay Hazari
- Department of Chemistry, Yale University, P.O. Box 208107, New Haven, Connecticut 06520, United States
| | - Kathrin H Hopmann
- Hylleraas Center for Quantum Molecular Sciences, Department of Chemistry, UiT The Arctic University of Norway, N-9307 Tromsø, Norway
| | - 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 Lluı́s Companys 23, 08010 Barcelona, Spain
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30
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Li H, Guo L, Feng X, Huo L, Zhu S, Chu L. Sequential C-O decarboxylative vinylation/C-H arylation of cyclic oxalates via a nickel-catalyzed multicomponent radical cascade. Chem Sci 2020; 11:4904-4910. [PMID: 34122946 PMCID: PMC8159219 DOI: 10.1039/d0sc01471k] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Accepted: 04/14/2020] [Indexed: 12/15/2022] Open
Abstract
A selective, sequential C-O decarboxylative vinylation/C-H arylation of cyclic alcohol derivatives enabled by visible-light photoredox/nickel dual catalysis is described. This protocol utilizes a multicomponent radical cascade process, i.e. decarboxylative vinylation/1,5-HAT/aryl cross-coupling, to achieve efficient, site-selective dual-functionalization of saturated cyclic hydrocarbons in one single operation. This synergistic protocol provides straightforward access to sp3-enriched scaffolds and an alternative retrosynthetic disconnection to diversely functionalized saturated ring systems from the simple starting materials.
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Affiliation(s)
- Huan Li
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Chemistry, Chemical Engineering and Biotechnology, Center for Advanced Low-Dimension Materials, Donghua University Shanghai 201620 China
| | - Lei Guo
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Chemistry, Chemical Engineering and Biotechnology, Center for Advanced Low-Dimension Materials, Donghua University Shanghai 201620 China
| | - Xiaoliang Feng
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Chemistry, Chemical Engineering and Biotechnology, Center for Advanced Low-Dimension Materials, Donghua University Shanghai 201620 China
| | - Liping Huo
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Chemistry, Chemical Engineering and Biotechnology, Center for Advanced Low-Dimension Materials, Donghua University Shanghai 201620 China
| | - Shengqing Zhu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Chemistry, Chemical Engineering and Biotechnology, Center for Advanced Low-Dimension Materials, Donghua University Shanghai 201620 China
| | - Lingling Chu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Chemistry, Chemical Engineering and Biotechnology, Center for Advanced Low-Dimension Materials, Donghua University Shanghai 201620 China
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