1
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Liu Y, Zhu Z, Zhang Y, Zhang Y, Liu S, Shen X. Stereoselective Synthesis of Silyl Enol Ethers with Acylsilanes and α,β-Unsaturated Ketones. Org Lett 2024; 26:5911-5916. [PMID: 38975934 DOI: 10.1021/acs.orglett.4c01782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/09/2024]
Abstract
Acylsilanes are emerging bench-stable reagents for the generation of electron-rich oxycarbenes that are difficult to access with unstable diazo compounds. Herein, we report a siloxycarbene-mediated stereoselective synthesis of silyl enol ethers through visible-light-induced intermolecular reactions between acylsilanes and α,β-unsaturated ketones. Both the solvent and low temperature are important for the success of the reaction. This approach features atomic economics, exclusive stereocontrol, and broad substrate scope. The synthetic potential of this methodology is demonstrated by gram-scale reaction and various downstream transformations including that requiring configuration purity of the silyl enol ethers.
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Affiliation(s)
- Ying Liu
- The Institute for Advanced Studies, Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, Wuhan University, 299 Bayi Road, Wuhan, Hubei 430072, China
| | - Zhihong Zhu
- The Institute for Advanced Studies, Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, Wuhan University, 299 Bayi Road, Wuhan, Hubei 430072, China
| | - Yunxiao Zhang
- The Institute for Advanced Studies, Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, Wuhan University, 299 Bayi Road, Wuhan, Hubei 430072, China
| | - Yizhi Zhang
- The Institute for Advanced Studies, Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, Wuhan University, 299 Bayi Road, Wuhan, Hubei 430072, China
| | - Shanshan Liu
- The Institute for Advanced Studies, Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, Wuhan University, 299 Bayi Road, Wuhan, Hubei 430072, China
| | - Xiao Shen
- The Institute for Advanced Studies, Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, Wuhan University, 299 Bayi Road, Wuhan, Hubei 430072, China
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2
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Xie ZY, Li QQ, Liu Y, Cai BG, Xuan J. Photoinduced Asymmetric Formal Siloxycarbene Insertion into sp 3 C-H Bonds Enabled by Chiral Phosphoric Acid. Org Lett 2024; 26:5827-5832. [PMID: 38954473 DOI: 10.1021/acs.orglett.4c02020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/04/2024]
Abstract
We disclosed herein an enantioselective formal siloxycarbene insertion reaction enabled by chiral phosphoric acid and blue LED irradiation. This is the first time the asymmetric siloxycarbene insertion into an sp3 C-H bond under transition-metal free conditions has been realized. The reaction features good isolated yields (up to 92%), high enantioselectivity (up to 99:1 er), mild reaction conditions, and good compatibility. Moreover, this method also provides a green and efficient method to construct a chiral quaternary carbon center.
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Affiliation(s)
- Zi-Yi Xie
- Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, College of Chemistry & Chemical Engineering, Anhui University, Hefei, Anhui 230601, China
| | - Qiang-Qiang Li
- Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, College of Chemistry & Chemical Engineering, Anhui University, Hefei, Anhui 230601, China
| | - Yang Liu
- Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, College of Chemistry & Chemical Engineering, Anhui University, Hefei, Anhui 230601, China
| | - Bao-Gui Cai
- Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, College of Chemistry & Chemical Engineering, Anhui University, Hefei, Anhui 230601, China
| | - Jun Xuan
- Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, College of Chemistry & Chemical Engineering, Anhui University, Hefei, Anhui 230601, China
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3
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Atkin L, Ross HJ, Priebbenow DL. Acylsilanes in Transition-Metal-Catalyzed and Photochemical Reactions: Clarifying Product Formation. J Org Chem 2023; 88:14205-14209. [PMID: 37738455 DOI: 10.1021/acs.joc.3c01454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/24/2023]
Abstract
Acylsilanes are able to react as nucleophilic carbene precursors, electrophiles, and directing groups in C-H functionalization. To date, some of the products reportedly formed during transition-metal-catalyzed and photochemical reactions involving acylsilanes have been incorrectly assigned. To provide clarity, we herein address these structural misassignments and detail the revised structures. New insights into the reactivity of acylsilanes were also afforded via the discovery that light-induced siloxy carbenes participate in intramolecular 1,2-carbonyl addition to proximal esters.
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Affiliation(s)
- Liselle Atkin
- Department of Medicinal Chemistry, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia
| | - Hannah J Ross
- Department of Medicinal Chemistry, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia
| | - Daniel L Priebbenow
- Department of Medicinal Chemistry, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia
- School of Chemistry, University of Melbourne, Parkville, Victoria 3010, Australia
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4
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Zhou G, Guo Z, Shen X. Electron-Rich Oxycarbenes: New Synthetic and Catalytic Applications beyond Group 6 Fischer Carbene Complexes. Angew Chem Int Ed Engl 2023; 62:e202217189. [PMID: 36594672 DOI: 10.1002/anie.202217189] [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: 11/22/2022] [Revised: 01/02/2023] [Accepted: 01/03/2023] [Indexed: 01/04/2023]
Abstract
Oxycarbenes have emerged as useful intermediates in synthetic chemistry. Compared to the widely studied oxycarbene metal complexes bearing Group 6 metals, the synthetic and catalytic applications of oxycarbenes beyond Group 6 Fischer carbene complexes are less explored because of the difficulty in controlling their reactivity and the need to use a stoichiometric amount of a presynthesized Group 6 metal carbene complex as the starting material. This Minireview summarizes early synthetic and catalytic applications of late-transition-metal oxycarbene complexes and highlights recent advances in free oxycarbene reactions and transition-metal-catalyzed reactions involving oxycarbenes. We hope this Minireview will inspire further developments in this emerging area.
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Affiliation(s)
- Gang Zhou
- Institute for Advanced Studies, Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, Wuhan University, 299 Bayi Road, Wuhan, Hubei 430072, China
| | - Zhuanzhuan Guo
- Institute for Advanced Studies, Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, Wuhan University, 299 Bayi Road, Wuhan, Hubei 430072, China
| | - Xiao Shen
- Institute for Advanced Studies, Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, Wuhan University, 299 Bayi Road, Wuhan, Hubei 430072, China
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5
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Zheng L, Guo X, Li YC, Wu Y, Xue XS, Wang P. Cu/SaBox-Catalyzed Photoinduced Coupling of Acylsilanes with Alkynes. Angew Chem Int Ed Engl 2023; 62:e202216373. [PMID: 36465061 DOI: 10.1002/anie.202216373] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 12/04/2022] [Accepted: 12/05/2022] [Indexed: 12/09/2022]
Abstract
The transition metal-catalyzed cross-coupling reaction with Fischer metal carbene intermediates bearing an electron-rich alkoxyl or siloxyl group remains a big challenge due to the lack of readily available corresponding carbene precursors. Herein, we report the coupling of alkynes with the Fischer-type copper carbene species bearing a α-siloxyl group, which could be in situ generated from acylsilanes catalytically under photoirradiation and redox-neutral conditions. The side-arm modified bisoxazoline (SaBox) ligands prove to be crucial for this coupling reaction, which provides the corresponding alkynyl alcohol in high yields with remarkable heterocycle tolerance and broad substrate scope.
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Affiliation(s)
- Long Zheng
- School of Chemistry and Materials Science, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, 1 Sub-lane Xiangshan, Hangzhou, 310024, P. R. China.,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, CAS, 345 Lingling Road, Shanghai, 200032, P. R. China
| | - Xueying Guo
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, CAS, 345 Lingling Road, Shanghai, 200032, P. R. China
| | - Ying-Chao Li
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, CAS, 345 Lingling Road, Shanghai, 200032, P. R. China
| | - Yichen Wu
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, CAS, 345 Lingling Road, Shanghai, 200032, P. R. China
| | - Xiao-Song Xue
- School of Chemistry and Materials Science, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, 1 Sub-lane Xiangshan, Hangzhou, 310024, P. R. China.,Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, CAS, 345 Lingling Road, Shanghai, 200032, P. R. China
| | - Peng Wang
- School of Chemistry and Materials Science, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, 1 Sub-lane Xiangshan, Hangzhou, 310024, P. R. China.,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, CAS, 345 Lingling Road, Shanghai, 200032, P. R. China.,CAS Key Laboratory of Energy Regulation Materials, Shanghai Institute of Organic Chemistry, CAS, 345 Lingling Road, Shanghai, 200032, P. R. China
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6
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Cascade cyclization of alkene-tethered acylsilanes and allylic sulfones enabled by unproductive energy transfer photocatalysis. Nat Commun 2022; 13:6111. [PMID: 36245017 PMCID: PMC9573877 DOI: 10.1038/s41467-022-33730-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Accepted: 09/29/2022] [Indexed: 11/09/2022] Open
Abstract
Developing photo-induced cascade cyclization of alkene-tethered acylsilanes is challenging, because acylsilanes are unstable under light irradiation. Herein, we report that the energy transfer from excited acylsilanes to a photocatalyst that possesses lower triplet energy can inhibit the undesired decomposition of acylsilanes. With neutral Eosin Y as the photocatalyst, an efficient synthesis of cyclopentanol derivatives is achieved with alkene-tethered acylsilanes and allylic sulfones. The reaction shows broad substrate scope and the synthetic potential of this transformation is highlighted by the construction of cyclopentanol derivatives which contain fused-ring or bridged-ring. Acylsilanes decompose under light irradiation, and this limits their use in light-induced organic transformations. Here the authors report a strategy to inhibit the light-induced decomposition of acylsilanes, enabling the photochemical synthesis of cyclopentanol derivatives from alkene-tethered acylsilanes and allylic sulfones.
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7
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Vale J, Gomes RF, Afonso CAM, Candeias NR. Functionalized Cyclopentenes via the Formal [4+1] Cycloaddition of Photogenerated Siloxycarbenes from Acyl Silanes. J Org Chem 2022; 87:8910-8920. [PMID: 35736215 PMCID: PMC9776530 DOI: 10.1021/acs.joc.2c00591] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
This work describes the first formal cycloaddition reaction of photogenerated nucleophilic carbenes derived from acylsilanes with electrophilic dienes. The resulting transient donor-acceptor cyclopropane rearranges to its stable and highly functionalized cyclopentene isomer in an unprecedented metal-free process. The cyclopropanation-vinyl cyclopropane rearrangement sequence was corroborated by computational calculations. The cyclopropane formation corresponds to a higher energetic barrier, and the vinylcyclopropane-cyclopentene rearrangement proceeds through different mechanisms, although of comparable energies, depending on the stereochemistry of the cyclopropane.
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Affiliation(s)
- João
R. Vale
- iMed.ULisboa,
Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, Lisbon 1649-003, Portugal,Faculty
of Engineering and Natural Sciences, Tampere
University, Korkeakoulunkatu 8, Tampere 33101, Finland
| | - Rafael F. Gomes
- iMed.ULisboa,
Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, Lisbon 1649-003, Portugal
| | - Carlos A. M. Afonso
- iMed.ULisboa,
Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, Lisbon 1649-003, Portugal,
| | - Nuno R. Candeias
- Faculty
of Engineering and Natural Sciences, Tampere
University, Korkeakoulunkatu 8, Tampere 33101, Finland,LAQV-REQUIMTE,
Department of Chemistry, University of Aveiro, Aveiro 3810-193, Portugal,
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8
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Zhang Y, Zhou G, Gong X, Guo Z, Qi X, Shen X. Diastereoselective Transfer of Tri(di)fluoroacetylsilanes-Derived Carbenes to Alkenes. Angew Chem Int Ed Engl 2022; 61:e202202175. [PMID: 35415937 DOI: 10.1002/anie.202202175] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Indexed: 01/04/2023]
Abstract
Stereoselective cyclopropanation reaction of alkenes is usually achieved by metal complexes via singlet-metal-carbene intermediates. However, previous transition-metal-catalyzed cyclopropanation of alkenes with acylsilanes afforded low diastereoselectivity. Herein, we report the first visible-light-induced transition-metal-free cyclopropanation reaction of terminal alkenes with trifluoroacetylsilanes and difluoroacetylsilanes. Both aromatic and aliphatic alkenes as well as electron-deficient alkenes are suitable substrates for the highly cis-selective [2+1] cyclization reaction. A combination of experimental and computational studies identified triplet carbenes as being key intermediates in this transformation. The gram scale reaction and late-stage functionalization demonstrated the synthetic potential of this strategy.
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Affiliation(s)
- Yizhi Zhang
- Institute for Advanced Studies, Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, Wuhan University, 299 Bayi Road, Wuhan, Hubei 430072, China
| | - Gang Zhou
- Institute for Advanced Studies, Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, Wuhan University, 299 Bayi Road, Wuhan, Hubei 430072, China
| | - Xingxing Gong
- Institute for Advanced Studies, Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, Wuhan University, 299 Bayi Road, Wuhan, Hubei 430072, China
| | - Zhuanzhuan Guo
- Institute for Advanced Studies, Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, Wuhan University, 299 Bayi Road, Wuhan, Hubei 430072, China
| | - Xiaotian Qi
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, 299 Bayi Road, Wuhan, Hubei 430072, China
| | - Xiao Shen
- Institute for Advanced Studies, Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, Wuhan University, 299 Bayi Road, Wuhan, Hubei 430072, China
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9
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Zhou G, Shen X. Visible-Light-Induced Organocatalyzed [2+1] Cyclization of Alkynes and Trifluoroacetylsilanes. Synlett 2022. [DOI: 10.1055/a-1840-5199] [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
The synthesis of common cyclopropenes has been widely studied, but the synthesis of cyclopropenols is a significant challenge. Herein, we highlight our recent work on the synthesis of trifluoromethylated cyclopropenols through [2+1] cycloaddition reaction between alkynes and trifluoroacetylsilanes under visible-light-induced organocatalysis. The novel amphiphilic donor-acceptor carbenes derived from trifluoroacetylsilanes can react effectively with both activated and unactivated alkynes. Broad substrate scope and good functional group tolerance have been achieved. Besides, the synthetic potential of this reaction was highlighted by a gram-scale reaction and the one-pot diastereoselective synthesis of trifluoromethylated cyclopropanols.
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10
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Zhang Y, Zhou G, Gong X, Guo Z, Qi X, Shen X. Diastereoselective Transfer of Tri(di)fluoroacetylsilanes‐Derived Carbenes to Alkenes. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202202175] [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)
- Yizhi Zhang
- Institute for Advanced Studies Engineering Research Center of Organosilicon Compounds & Materials Ministry of Education Wuhan University 299 Bayi Road Wuhan Hubei 430072 China
| | - Gang Zhou
- Institute for Advanced Studies Engineering Research Center of Organosilicon Compounds & Materials Ministry of Education Wuhan University 299 Bayi Road Wuhan Hubei 430072 China
| | - Xingxing Gong
- Institute for Advanced Studies Engineering Research Center of Organosilicon Compounds & Materials Ministry of Education Wuhan University 299 Bayi Road Wuhan Hubei 430072 China
| | - Zhuanzhuan Guo
- Institute for Advanced Studies Engineering Research Center of Organosilicon Compounds & Materials Ministry of Education Wuhan University 299 Bayi Road Wuhan Hubei 430072 China
| | - Xiaotian Qi
- Engineering Research Center of Organosilicon Compounds & Materials Ministry of Education College of Chemistry and Molecular Sciences Wuhan University 299 Bayi Road Wuhan Hubei 430072 China
| | - Xiao Shen
- Institute for Advanced Studies Engineering Research Center of Organosilicon Compounds & Materials Ministry of Education Wuhan University 299 Bayi Road Wuhan Hubei 430072 China
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11
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Zhou G, Shen X. Synthesis of Cyclopropenols Enabled by Visible-Light-Induced Organocatalyzed [2+1] Cyclization. Angew Chem Int Ed Engl 2022; 61:e202115334. [PMID: 34994996 DOI: 10.1002/anie.202115334] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Indexed: 12/28/2022]
Abstract
Although the synthesis of common cyclopropenes has been well studied, the access to cyclopropenols is rather limited. Herein, we report the first synthesis of α-trifluoromethylated cyclopropenols via 2+1 cycloaddition reactions between alkynes and trifluoroacylsilanes, enabled by visible-light-induced organocatalysis. The novel ambiphilic donor-acceptor carbenes derived from trifluoroacetylsilanes reacted efficiently with both activated and non-activated alkynes. The reaction features simple operation, mild conditions, broad substrate scope and good functional group tolerance. The synthetic potential of the reaction is highlighted by the gram-scale reactions and first synthesis of α-trifluoromethylated cyclopropanols through the combination of the 2+1 cyclization and high diastereoselective hydrogenation reaction in one pot.
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Affiliation(s)
- Gang Zhou
- Institute for Advanced Studies, Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, Wuhan University, 299 Bayi Road, Wuhan, Hubei, 430072, China
| | - Xiao Shen
- Institute for Advanced Studies, Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, Wuhan University, 299 Bayi Road, Wuhan, Hubei, 430072, China
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12
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Ishida K, Kusama H. Generation of (amino)(boryloxy)carbenes from carbamoylboranes and their coupling reaction with aldehydes. Chem Commun (Camb) 2022; 58:1625-1628. [PMID: 35022628 DOI: 10.1039/d1cc06377d] [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
Carbamoylboranes were found to react with various aldehydes under heating conditions to give α-hydroxycarboxamides in good yields. A DFT study supports the mechanism, which involves thermally generated (amino)(boryloxy)carbene intermediates. To our knowledge, this is the first report on the generation of (amino)(boryloxy)carbene intermediates from carbamoylboranes and its application to carbon-carbon bond-forming reactions.
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Affiliation(s)
- Kento Ishida
- Department of Chemistry, Faculty of Science, Gakushuin University, 1-5-1 Mejiro, Toshima-ku, Tokyo 171-8588, Japan.
| | - Hiroyuki Kusama
- Department of Chemistry, Faculty of Science, Gakushuin University, 1-5-1 Mejiro, Toshima-ku, Tokyo 171-8588, Japan.
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13
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Zhou G, Shen X. Synthesis of Cyclopropenols Enabled by Visible‐Light‐Induced Organocatalyzed [2+1] Cyclization. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202115334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Gang Zhou
- Wuhan University Institute for Advanced Studies CHINA
| | - Xiao Shen
- Wuhan University Institute for Advanced Studies 299 Bayi Road 430072 Wuhan CHINA
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14
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Bunyamin A, Hua C, Polyzos A, Priebbenow DL. Intramolecular Photochemical [2+1]-Cycloadditions of Nucleophilic Siloxy Carbenes. Chem Sci 2022; 13:3273-3280. [PMID: 35414869 PMCID: PMC8926286 DOI: 10.1039/d2sc00203e] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Accepted: 02/24/2022] [Indexed: 11/21/2022] Open
Abstract
Visible light induced singlet nucleophilic carbenes undergo rapid [2 + 1]-cycloaddition with tethered olefins to afford unique bicyclo[3.1.0]hexane and bicyclo[4.1.0]heptane scaffolds. This cyclopropanation process requires only visible light irradiation to proceed, circumventing the use of exogenous (photo)catalysts, sensitisers or additives and showcases a vastly underexplored mode of reactivity for nucleophilic carbenes in chemical synthesis. The discovery of additional transformations including a cyclopropanation/retro-Michael/Michael cascade process to afford chromanones and a photochemical C–H insertion reaction are also described. Visible light induced singlet nucleophilic carbenes undergo rapid [2 + 1]-cycloaddition with tethered olefins to afford unique bicyclo[3.1.0]hexane and bicyclo[4.1.0]heptane scaffolds.![]()
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Affiliation(s)
- Amanda Bunyamin
- School of Chemistry, University of Melbourne Parkville Victoria 3010 Australia
| | - Carol Hua
- School of Chemistry, University of Melbourne Parkville Victoria 3010 Australia
- School of Life and Environmental Sciences, Deakin University Waurn Ponds Victoria 3216 Australia
| | - Anastasios Polyzos
- School of Chemistry, University of Melbourne Parkville Victoria 3010 Australia
- CSIRO Manufacturing Clayton Victoria 3168 Australia
| | - Daniel L Priebbenow
- School of Chemistry, University of Melbourne Parkville Victoria 3010 Australia
- Department of Medicinal Chemistry, Monash Institute of Pharmaceutical Science, Monash University Parkville Victoria 3052 Australia
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15
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Stuckhardt C, Wissing M, Studer A. Photo Click Reaction of Acylsilanes with Indoles. Angew Chem Int Ed Engl 2021; 60:18605-18611. [PMID: 34129264 PMCID: PMC8456837 DOI: 10.1002/anie.202101689] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Revised: 05/06/2021] [Indexed: 12/14/2022]
Abstract
Light-mediated coupling of acylsilanes with indoles is reported. This photo click reaction occurs under mild conditions (415 nm) mostly in quantitative yield and provides stable silylated N,O-acetals via light mediated siloxycarbene generation with subsequent indole-N-H insertion. We show that this very efficient and fully atom economic coupling process can be applied to conjugate complex systems, as documented by the clicking of carbohydrates with indole alkaloids. The method is also applicable to the conjugation of polymer chains. The linking acetal moiety can be readily cleaved and it is also shown that wavelength-selective coupling and cleavage with acyl silanes bearing a second photoactive moiety is possible. This is documented by a successful polymerization/depolymerization sequence and by a polymer folding/unfolding process.
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Affiliation(s)
- Constantin Stuckhardt
- Organisch-Chemisches InstitutWestfälische Wilhelms-UniversitätCorrensstrasse 4048149MünsterGermany
| | - Maren Wissing
- Organisch-Chemisches InstitutWestfälische Wilhelms-UniversitätCorrensstrasse 4048149MünsterGermany
| | - Armido Studer
- Organisch-Chemisches InstitutWestfälische Wilhelms-UniversitätCorrensstrasse 4048149MünsterGermany
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16
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Stuckhardt C, Wissing M, Studer A. Photo Click Reaction of Acylsilanes with Indoles. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202101689] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Constantin Stuckhardt
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Corrensstrasse 40 48149 Münster Germany
| | - Maren Wissing
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Corrensstrasse 40 48149 Münster Germany
| | - Armido Studer
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Corrensstrasse 40 48149 Münster Germany
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17
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Yang Z, Zhou H, He M, Li J, Yang Z, Wu Y. One‐pot Synthesis of 3‐Acylsilane‐Substituted Isoquinolines via Rhodium (III)‐Catalyzed C−H Activation/Annulation of
O
‐pivaloyl Oximes With Acryloylsilanes. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100254] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Zengbao Yang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology West China School of Pharmacy Sichuan University No. 17 Southern Renmin Road 610041 Chengdu Sichuan P. R. China
| | - Hui Zhou
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology West China School of Pharmacy Sichuan University No. 17 Southern Renmin Road 610041 Chengdu Sichuan P. R. China
| | - Maoyao He
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology West China School of Pharmacy Sichuan University No. 17 Southern Renmin Road 610041 Chengdu Sichuan P. R. China
| | - Jianglian Li
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology West China School of Pharmacy Sichuan University No. 17 Southern Renmin Road 610041 Chengdu Sichuan P. R. China
| | - Zhongzhen Yang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology West China School of Pharmacy Sichuan University No. 17 Southern Renmin Road 610041 Chengdu Sichuan P. R. China
| | - Yong Wu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology West China School of Pharmacy Sichuan University No. 17 Southern Renmin Road 610041 Chengdu Sichuan P. R. China
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18
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Ye J, Bellotti P, Paulisch TO, Daniliuc CG, Glorius F. Durch sichtbares Licht vermittelte Cycloadditionen von α‐Ketoacylsilanen mit Iminen: Einfache Synthese von β‐Lactamen. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202102451] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Jian‐Heng Ye
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Deutschland
| | - Peter Bellotti
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Deutschland
| | - Tiffany O. Paulisch
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Deutschland
| | - Constantin G. Daniliuc
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Deutschland
| | - Frank Glorius
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Deutschland
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19
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Ye JH, Bellotti P, Paulisch TO, Daniliuc CG, Glorius F. Visible-Light-Induced Cycloaddition of α-Ketoacylsilanes with Imines: Facile Access to β-Lactams. Angew Chem Int Ed Engl 2021; 60:13671-13676. [PMID: 33729650 DOI: 10.1002/anie.202102451] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Revised: 03/09/2021] [Indexed: 11/06/2022]
Abstract
We report the synthesis of β-lactams from α-ketoacylsilanes and imines, which proceeds via a formal [2+2] photochemical cycloaddition with in situ generation of siloxyketene. This mild and operationally simple reaction proceeds in an atom-economic fashion with broad substrate scope, including aldimines, ketimines, hydrazones, and fused nitrogen heterocycles, affording a variety of important β-lactams with satisfactory diastereoselectivities in most cases. This reaction also features good functional-group tolerance, facile scalability and product diversification. Experimental and computational studies suggest that α-ketoacylsilanes can serve as photochemical precursors by engaging in a 1,3 silicon shift to the distal carbonyl group.
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Affiliation(s)
- Jian-Heng Ye
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 40, 48149, Münster, Germany
| | - Peter Bellotti
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 40, 48149, Münster, Germany
| | - Tiffany O Paulisch
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 40, 48149, Münster, Germany
| | - Constantin G Daniliuc
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 40, 48149, Münster, Germany
| | - Frank Glorius
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 40, 48149, Münster, Germany
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20
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Ma L, Yu Y, Xin L, Zhu L, Xia J, Ou P, Huang X. Visible Light Enabled Formal Cross Silyl Benzoin Reaction as an Access to α‐Hydroxyketones. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100186] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Liyao Ma
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology Center for Excellence in Molecular Synthesis Fujian Institute of Research on the Structure of Matter Fujian College Chinese Academy of Sciences Fuzhou Fujian 350002 People's Republic of China
- College of Chemistry Fuzhou University Fuzhou 350116 People's Republic of China
| | - Yinghua Yu
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology Center for Excellence in Molecular Synthesis Fujian Institute of Research on the Structure of Matter Fujian College Chinese Academy of Sciences Fuzhou Fujian 350002 People's Republic of China
| | - Luoting Xin
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology Center for Excellence in Molecular Synthesis Fujian Institute of Research on the Structure of Matter Fujian College Chinese Academy of Sciences Fuzhou Fujian 350002 People's Republic of China
| | - Lei Zhu
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology Center for Excellence in Molecular Synthesis Fujian Institute of Research on the Structure of Matter Fujian College Chinese Academy of Sciences Fuzhou Fujian 350002 People's Republic of China
| | - Jiajin Xia
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology Center for Excellence in Molecular Synthesis Fujian Institute of Research on the Structure of Matter Fujian College Chinese Academy of Sciences Fuzhou Fujian 350002 People's Republic of China
| | - Pengcheng Ou
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology Center for Excellence in Molecular Synthesis Fujian Institute of Research on the Structure of Matter Fujian College Chinese Academy of Sciences Fuzhou Fujian 350002 People's Republic of China
- College of Chemistry Fuzhou University Fuzhou 350116 People's Republic of China
| | - Xueliang Huang
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research Ministry of Education of China Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province College of Chemistry and Chemical Engineering Hunan Normal University Changsha Hunan 410081 People's Republic of China
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology Center for Excellence in Molecular Synthesis Fujian Institute of Research on the Structure of Matter Fujian College Chinese Academy of Sciences Fuzhou Fujian 350002 People's Republic of China
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21
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Fan Z, Yi Y, Chen S, Xi C. Visible-Light-Induced Catalyst-Free Carboxylation of Acylsilanes with Carbon Dioxide. Org Lett 2021; 23:2303-2307. [DOI: 10.1021/acs.orglett.1c00435] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zhengning Fan
- MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Department of Chemistry, Tsinghua University, Beijing 100084, People’s Republic of China
| | - Yaping Yi
- MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Department of Chemistry, Tsinghua University, Beijing 100084, People’s Republic of China
| | - Shenhao Chen
- MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Department of Chemistry, Tsinghua University, Beijing 100084, People’s Republic of China
| | - Chanjuan Xi
- MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Department of Chemistry, Tsinghua University, Beijing 100084, People’s Republic of China
- State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, People’s Republic of China
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22
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Li X, Xu Z, Wang L, Wang F, Yang J, Li P. A Facile Synthesis of Functionalized Benzofurans via Visible‐Light‐Induced Tandem Cyclization of 1,6‐Enynes with Disulfides. CHEMPHOTOCHEM 2020. [DOI: 10.1002/cptc.202000197] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Xuezhi Li
- Advanced Research Institute and Department of Chemistry Taizhou University Taizhou Zhejiang 318000 P. R. China
- Department of Chemistry Huaibei Normal University Huaibei Anhui 235000 P. R. China
| | - Zhaoliang Xu
- Department of Chemistry Huaibei Normal University Huaibei Anhui 235000 P. R. China
| | - Lei Wang
- Advanced Research Institute and Department of Chemistry Taizhou University Taizhou Zhejiang 318000 P. R. China
- Department of Chemistry Huaibei Normal University Huaibei Anhui 235000 P. R. China
- State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences Shanghai 200032 P. R. China
| | - Fang Wang
- Advanced Research Institute and Department of Chemistry Taizhou University Taizhou Zhejiang 318000 P. R. China
- State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences Shanghai 200032 P. R. China
| | - Jianguo Yang
- Advanced Research Institute and Department of Chemistry Taizhou University Taizhou Zhejiang 318000 P. R. China
- State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences Shanghai 200032 P. R. China
| | - Pinhua Li
- Department of Chemistry Huaibei Normal University Huaibei Anhui 235000 P. R. China
- State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences Shanghai 200032 P. R. China
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23
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Lu X, Zhang J, Xu L, Shen W, Yu F, Ding L, Zhong G. Ruthenium-Catalyzed Brook Rearrangement Involved Domino Sequence Enabled by Acylsilane-Aldehyde Corporation. Org Lett 2020; 22:5610-5616. [PMID: 32633529 DOI: 10.1021/acs.orglett.0c01983] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A ruthenium-catalyzed [1,2]-Brook rearrangement involved domino sequence is presented to prepare highly functionalized silyloxy indenes with atomic- and step-economy. This domino reaction is triggered by acylsilane-directed C-H activation, and the aldehyde controlled the subsequent enol cyclization/Brook Rearrangement other than β-H elimination. The protocol tolerates a broad substitution pattern, and the further synthetic elaboration of silyloxy indenes allows access to a diverse range of interesting indene and indanone derivatives.
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Affiliation(s)
- Xiunan Lu
- College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China
| | - Jian Zhang
- College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China
| | - Liangyao Xu
- College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China
| | - Wenzhou Shen
- College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China
| | - Feifei Yu
- College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China
| | - Liyuan Ding
- College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China
| | - Guofu Zhong
- College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China
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24
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Cohen Y, Cohen A, Marek I. Creating Stereocenters within Acyclic Systems by C–C Bond Cleavage of Cyclopropanes. Chem Rev 2020; 121:140-161. [DOI: 10.1021/acs.chemrev.0c00167] [Citation(s) in RCA: 80] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yair Cohen
- Schulich Faculty of Chemistry, Technion − Israel Institute of Technology, Technion City, Haifa 3200009, Israel
| | - Anthony Cohen
- Schulich Faculty of Chemistry, Technion − Israel Institute of Technology, Technion City, Haifa 3200009, Israel
| | - Ilan Marek
- Schulich Faculty of Chemistry, Technion − Israel Institute of Technology, Technion City, Haifa 3200009, Israel
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25
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Chiummiento L, D’Orsi R, Funicello M, Lupattelli P. Last Decade of Unconventional Methodologies for the Synthesis of Substituted Benzofurans. Molecules 2020; 25:E2327. [PMID: 32429435 PMCID: PMC7288127 DOI: 10.3390/molecules25102327] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 05/13/2020] [Accepted: 05/13/2020] [Indexed: 12/13/2022] Open
Abstract
This review describes the progress of the last decade on the synthesis of substituted benzofurans, which are useful scaffolds for the synthesis of numerous natural products and pharmaceuticals. In particular, new intramolecular and intermolecular C-C and/or C-O bond-forming processes, with transition-metal catalysis or metal-free are summarized. (1) Introduction. (2) Ring generation via intramolecular cyclization. (2.1) C7a-O bond formation: (route a). (2.2) O-C2 bond formation: (route b). (2.3) C2-C3 bond formation: (route c). (2.4) C3-C3a bond formation: (route d). (3) Ring generation via intermolecular cyclization. (3.1) C7a-O and C3-C3a bond formation (route a + d). (3.2) O-C2 and C2-C3 bond formation: (route b + c). (3.3) O-C2 and C3-C3a bond formation: (route b + d). (4) Benzannulation. (5) Conclusion.
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Affiliation(s)
- Lucia Chiummiento
- Department of Science, Via dell’Ateneo Lucano, 10, 85100 Potenza, Italy; (R.D.); (M.F.); (P.L.)
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26
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Priebbenow DL. Silicon‐Derived Singlet Nucleophilic Carbene Reagents in Organic Synthesis. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000279] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Daniel L. Priebbenow
- School of ChemistryThe University of Melbourne Parkville, Victoria Australia 3010
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27
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Synthesis and Application of 1,2-Aminoalcohols with Neoisopulegol-Based Octahydrobenzofuran Core. Molecules 2019; 25:molecules25010021. [PMID: 31861609 PMCID: PMC6982906 DOI: 10.3390/molecules25010021] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Revised: 12/05/2019] [Accepted: 12/16/2019] [Indexed: 11/17/2022] Open
Abstract
A library of 1,2-aminoalcohol derivatives with a neoisopulegol-based octahydrobenzofuran core was developed and applied as chiral catalysts in the addition of diethylzinc to benzaldehyde. The allylic chlorination of (+)-neoisopulegol, derived from natural (–)-isopulegol followed by cyclization, gave the key methyleneoctahydrobenzofuran intermediate. The stereoselective epoxidation of the key intermediate and subsequent oxirane ring opening with primary amines afforded the required 1,2-aminoalcohols. The ring closure of the secondary amine analogues with formaldehyde provided spiro-oxazolidine ring systems. The dihydroxylation of the methylenetetrahydrofuran moiety with OsO4/NMO (4-methylmorpholine N-oxide) resulted in the formation of a neoisopulegol-based diol in a highly stereoselective reaction. The antimicrobial activity of both the aminoalcohol derivatives and the diol was also explored.
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28
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Ye JH, Quach L, Paulisch T, Glorius F. Visible-Light-Induced, Metal-Free Carbene Insertion into B-H Bonds between Acylsilanes and Pinacolborane. J Am Chem Soc 2019; 141:16227-16231. [PMID: 31558013 DOI: 10.1021/jacs.9b08960] [Citation(s) in RCA: 64] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Carbene insertion reactions with B-H bonds are a challenging but promising method for the synthesis of organoboranes. Herein, we report visible-light-induced B-H insertions of HBpin with acylsilane. This metal-free and operationally simple reaction proceeds in an atom-economical way with broad substrate scope under mild reaction conditions, affording a variety of important α-alkoxyorganoboronate esters in quantitative yields. Control experiments and density functional theory calculations suggest that the siloxycarbene generation from the T1 state of acylsilane and the carbene insertion into the B-H bond occurred in a concerted manner.
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Affiliation(s)
- Jian-Heng Ye
- Organisch-Chemisches Institut , Westfälische Wilhelms-Universität Münster , Corrensstraße 40 , 48149 Münster , Germany
| | - Linda Quach
- Organisch-Chemisches Institut , Westfälische Wilhelms-Universität Münster , Corrensstraße 40 , 48149 Münster , Germany
| | - Tiffany Paulisch
- Organisch-Chemisches Institut , Westfälische Wilhelms-Universität Münster , Corrensstraße 40 , 48149 Münster , Germany
| | - Frank Glorius
- Organisch-Chemisches Institut , Westfälische Wilhelms-Universität Münster , Corrensstraße 40 , 48149 Münster , Germany
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29
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Priebbenow DL. Insights into the Stability of Siloxy Carbene Intermediates and Their Corresponding Oxocarbenium Ions. J Org Chem 2019; 84:11813-11822. [PMID: 31424932 DOI: 10.1021/acs.joc.9b01698] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Siloxy carbenes, formed thermally or photochemically from acyl silanes via a 1,2-Brook rearrangement, are intriguing reactive intermediates that partake in a range of chemical reactions. To gain further insight into the properties of this class of carbenes, the thermodynamic stabilities of a series of known siloxy carbenes were explored on the basis of hydrogenation enthalpies. Calculations were conducted at the B3LYP-D3(BJ) level (using dispersion-corrected DFT) on siloxy carbenes (X-C-OSiR3, singlet and triplet state), oxocarbenium ions (X-CH-OSiR3+), and their hydrogen addition products (X-CH2-OSiR3). Overall, strong correlation between singlet-triplet gaps and hydrogenation enthalpies was observed. Carbene stabilization enthalpy (CSE) values were also determined to provide additional insight into the structural features that influence the stability of siloxy carbenes.
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Affiliation(s)
- Daniel L Priebbenow
- School of Life and Environmental Sciences , Deakin University , Waurn Ponds , Australia , 3216
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30
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Rashid S, Bhat BA, Mehta G. A vicarious, one-pot synthesis of benzo- and naphthofurans: Applications to the syntheses of stereumene B and paeoveitols. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.03.037] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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31
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Lu X, Shen C, Meng K, Zhao L, Li T, Sun Y, Zhang J, Zhong G. Acylsilane directed aromatic C-H alkenylations by ruthenium catalysis. Chem Commun (Camb) 2019; 55:826-829. [PMID: 30574981 DOI: 10.1039/c8cc08250b] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
A ruthenium-catalyzed C-H alkenylation of aroylsilanes with electron-deficient alkenes was developed, using acylsilane as the directing group. The mild reaction conditions enable the tolerance of a wide scope of functionalities such as OMe, F, Cl, Br and CF3, providing a convenient and highly effective method for the synthesis of styrene derivatives bearing acylsilane. Steroid and heterocycles such as furan and thiophene were also well tolerated. Furthermore, acylsilane was efficiently converted to the corresponding aldehyde or carboxylic acid.
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Affiliation(s)
- Xiunan Lu
- College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 310036, China.
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32
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Tugny C, Zhang FG, Marek I. Versatility in the Brook Rearrangement for the Selective Ring-Opening of Three-Membered Rings. Chemistry 2019; 25:205-209. [PMID: 30294820 DOI: 10.1002/chem.201805006] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Indexed: 12/21/2022]
Abstract
From a single α-silylated carbinol intermediate, easily accessible by carbometallation of cyclopropenes, various scaffolds featuring a quaternary carbon stereocenter could be obtained selectively. The selectivity towards these different products was achieved by either changing the experimental conditions or the nature of the organometallic species involved.
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Affiliation(s)
- Coralie Tugny
- The Mallat Family Laboratory of Organic Chemistry, Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Technion City, 3200009, Haifa, Israel
| | - Fa-Guang Zhang
- The Mallat Family Laboratory of Organic Chemistry, Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Technion City, 3200009, Haifa, Israel
| | - Ilan Marek
- The Mallat Family Laboratory of Organic Chemistry, Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Technion City, 3200009, Haifa, Israel
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33
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Vale JR, Valkonen A, Afonso CAM, Candeias NR. Synthesis of silacyclopent-2-en-4-ols via intramolecular [2 + 2] photocycloaddition of benzoyl(allyl)silanes. Org Chem Front 2019. [DOI: 10.1039/c9qo01028a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Organosilicon compounds are versatile units with a wide range of uses from medicinal chemistry to the field of organic electronics.
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Affiliation(s)
- João R. Vale
- Faculty of Engineering and Natural sciences
- Tampere University
- 33101 Tampere
- Finland
- Instituto de Investigação do Medicamento (iMed.ULisboa)
| | - Arto Valkonen
- Department of Chemistry
- University of Jyvaskyla
- 40014 Jyväskylä
- Finland
| | - Carlos A. M. Afonso
- Instituto de Investigação do Medicamento (iMed.ULisboa)
- Faculty of Pharmacy
- Universidade de Lisboa
- 1649-003 Lisboa
- Portugal
| | - Nuno R. Candeias
- Faculty of Engineering and Natural sciences
- Tampere University
- 33101 Tampere
- Finland
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34
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Zhang J, Cheng S, Cai Z, Liu P, Sun P. Radical Addition Cascade Cyclization of 1,6-Enynes with DMSO To Access Methylsulfonylated and Carbonylated Benzofurans under Transition-Metal-Free Conditions. J Org Chem 2018; 83:9344-9352. [DOI: 10.1021/acs.joc.8b01265] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Jie Zhang
- School of Chemistry and Materials Science, Jiangsu Provincial Key Laboratory of Material Cycle Processes and Pollution Control, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Nanjing Normal University, Nanjing 210023, China
| | - Shijing Cheng
- School of Chemistry and Materials Science, Jiangsu Provincial Key Laboratory of Material Cycle Processes and Pollution Control, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Nanjing Normal University, Nanjing 210023, China
| | - Zhiqiang Cai
- School of Chemistry and Materials Science, Jiangsu Provincial Key Laboratory of Material Cycle Processes and Pollution Control, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Nanjing Normal University, Nanjing 210023, China
| | - Ping Liu
- School of Chemistry and Materials Science, Jiangsu Provincial Key Laboratory of Material Cycle Processes and Pollution Control, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Nanjing Normal University, Nanjing 210023, China
| | - Peipei Sun
- School of Chemistry and Materials Science, Jiangsu Provincial Key Laboratory of Material Cycle Processes and Pollution Control, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Nanjing Normal University, Nanjing 210023, China
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35
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Wang Y, Yang Y, Jie K, Huang L, Guo S, Cai H. Copper-Catalyzed C2 and C3 Phosphonation of Benzofuran and Benzothiophene with Trialkyl Phosphites. ChemCatChem 2018. [DOI: 10.1002/cctc.201701361] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Yufeng Wang
- Department of Chemistry; Nanchang University; Nanchang 330031 P.R. China
| | - Yajie Yang
- The First Clinical Medical College; Nanchang University; Nanchang 330031 P.R. China
| | - Kun Jie
- Department of Chemistry; Nanchang University; Nanchang 330031 P.R. China
| | - Ling Huang
- Department of Chemistry; Nanchang University; Nanchang 330031 P.R. China
| | - Shengmei Guo
- Department of Chemistry; Nanchang University; Nanchang 330031 P.R. China
| | - Hu Cai
- Department of Chemistry; Nanchang University; Nanchang 330031 P.R. China
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36
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Ao J, Liu Y, Jia S, Xue L, Li D, Tan Y, Qin W, Yan H. Acid-promoted furan annulation and aromatization: An access to benzo[ b ]furan derivatives. Tetrahedron 2018. [DOI: 10.1016/j.tet.2017.11.049] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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37
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Zhang H, Ma S, Yuan Z, Chen P, Xie X, Wang X, She X. Palladium-Promoted Neutral 1,4-Brook Rearrangement/Intramolecular Allylic Cyclization Cascade Reaction: A Strategy for the Construction of Vinyl Cyclobutanols. Org Lett 2017; 19:3478-3481. [PMID: 28598159 DOI: 10.1021/acs.orglett.7b01381] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A cascade reaction to build vinyl cyclobutanol rings through activation of vinyl epoxides by palladium, followed by 1,4-Brook rearrangement and intramolecular cyclization with a palladium complex of the resulting carbon anion, is described. Through this cascade reaction, several highly substituted cyclobutanol substrates were achieved in good yields with high stereoselectivities.
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Affiliation(s)
- Hao Zhang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University , 222 TianShui South Road, Lanzhou 730000, China
| | - Shiqiang Ma
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University , 222 TianShui South Road, Lanzhou 730000, China
| | - Ziyun Yuan
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University , 222 TianShui South Road, Lanzhou 730000, China
| | - Peng Chen
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University , 222 TianShui South Road, Lanzhou 730000, China
| | - Xingang Xie
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University , 222 TianShui South Road, Lanzhou 730000, China
| | - Xiaolei Wang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University , 222 TianShui South Road, Lanzhou 730000, China
| | - Xuegong She
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University , 222 TianShui South Road, Lanzhou 730000, China.,Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300071, China
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38
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Zhang FG, Marek I. Brook Rearrangement as Trigger for Carbene Generation: Synthesis of Stereodefined and Fully Substituted Cyclobutenes. J Am Chem Soc 2017; 139:8364-8370. [DOI: 10.1021/jacs.7b04255] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Fa-Guang Zhang
- The Mallat Family Laboratory of Organic
Chemistry, Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Technion City, Haifa 32000, Israel
| | - Ilan Marek
- The Mallat Family Laboratory of Organic
Chemistry, Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Technion City, Haifa 32000, Israel
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39
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Song S, Lu P, Liu H, Cai SH, Feng C, Loh TP. Switchable C–H Functionalization of N-Tosyl Acrylamides with Acryloylsilanes. Org Lett 2017; 19:2869-2872. [DOI: 10.1021/acs.orglett.7b01107] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Shengjin Song
- Department
of Chemistry, University of Science and Technology of China, Hefei 230026, P. R. China
| | - Ping Lu
- Department
of Chemistry, University of Science and Technology of China, Hefei 230026, P. R. China
| | - Huan Liu
- Department
of Chemistry, University of Science and Technology of China, Hefei 230026, P. R. China
| | - Sai-Hu Cai
- Department
of Chemistry, University of Science and Technology of China, Hefei 230026, P. R. China
- Institute
of Advanced Synthesis, College of Chemistry and Molecular Engineering,
Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing, Jiangsu 211816, P. R. China
| | - Chao Feng
- Institute
of Advanced Synthesis, College of Chemistry and Molecular Engineering,
Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing, Jiangsu 211816, P. R. China
| | - Teck-Peng Loh
- Department
of Chemistry, University of Science and Technology of China, Hefei 230026, P. R. China
- Division
of Chemistry and Biological Chemistry, School of Physical and Mathematical
Sciences, Nanyang Technological University, 637371 Singapore
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40
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Chen J, Zhang Z, Liu D, Zhang W. Palladium-Catalyzed Chemo- and Enantioselective C−O Bond Cleavage of α-Acyloxy Ketones by Hydrogenolysis. Angew Chem Int Ed Engl 2016; 55:8444-7. [PMID: 27312573 DOI: 10.1002/anie.201603590] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2016] [Revised: 05/11/2016] [Indexed: 11/11/2022]
Affiliation(s)
- Jianzhong Chen
- School of Chemistry and Chemical Engineering; Shanghai Jiao Tong University; 800 Dongchuan Road Shanghai 200240 P.R. China
| | - Zhenfeng Zhang
- School of Pharmacy; Shanghai Jiao Tong University; 800 Dongchuan Road Shanghai 200240 P.R. China
| | - Delong Liu
- School of Pharmacy; Shanghai Jiao Tong University; 800 Dongchuan Road Shanghai 200240 P.R. China
| | - Wanbin Zhang
- School of Chemistry and Chemical Engineering; Shanghai Jiao Tong University; 800 Dongchuan Road Shanghai 200240 P.R. China
- School of Pharmacy; Shanghai Jiao Tong University; 800 Dongchuan Road Shanghai 200240 P.R. China
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41
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Chen J, Zhang Z, Liu D, Zhang W. Palladium-Catalyzed Chemo- and Enantioselective C−O Bond Cleavage of α-Acyloxy Ketones by Hydrogenolysis. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201603590] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Jianzhong Chen
- School of Chemistry and Chemical Engineering; Shanghai Jiao Tong University; 800 Dongchuan Road Shanghai 200240 P.R. China
| | - Zhenfeng Zhang
- School of Pharmacy; Shanghai Jiao Tong University; 800 Dongchuan Road Shanghai 200240 P.R. China
| | - Delong Liu
- School of Pharmacy; Shanghai Jiao Tong University; 800 Dongchuan Road Shanghai 200240 P.R. China
| | - Wanbin Zhang
- School of Chemistry and Chemical Engineering; Shanghai Jiao Tong University; 800 Dongchuan Road Shanghai 200240 P.R. China
- School of Pharmacy; Shanghai Jiao Tong University; 800 Dongchuan Road Shanghai 200240 P.R. China
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42
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Liu Y, Cao P, Chen J. Selective C H functionalization of electron-deficient aromatics by carbamoylsilanes: synthesis of aromatic carbinolamines or amides. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.01.058] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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43
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Becker P, Pirwerdjan R, Bolm C. Acylsilanes in Iridium-Catalyzed Directed Amidation Reactions and Formation of Heterocycles via Siloxycarbenes. Angew Chem Int Ed Engl 2015; 54:15493-6. [PMID: 26537526 DOI: 10.1002/anie.201508501] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2015] [Indexed: 12/22/2022]
Abstract
Exposing ortho-amido aroylsilanes to visible light or heat leads to cyclization reactions that provide N-heterocyclic compounds via siloxycarbenes as key intermediates. The previously unreported starting materials have been prepared by directed amidations of aromatic acylsilanes in the presence of an iridium catalyst followed by N-alkylation.
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Affiliation(s)
- Peter Becker
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen (Germany)
| | - Ramona Pirwerdjan
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen (Germany)
| | - Carsten Bolm
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen (Germany).
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44
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Becker P, Pirwerdjan R, Bolm C. Acylsilanes in Iridium-Catalyzed Directed Amidation Reactions and Formation of Heterocycles via Siloxycarbenes. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201508501] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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45
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Velasco R, Feberero C, Sanz R. α-Lithiated Aryl Benzyl Ethers: Inhibition of [1,2]-Wittig Rearrangement and Application to the Synthesis of Benzo[b]furan Derivatives. Org Lett 2015; 17:4416-9. [DOI: 10.1021/acs.orglett.5b01964] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Rocío Velasco
- Área
de Química Orgánica, Departamento de Química,
Facultad de Ciencias, Universidad de Burgos, Pza. Misael Bañuelos s/n, 09001 Burgos, Spain
| | - Claudia Feberero
- Área
de Química Orgánica, Departamento de Química,
Facultad de Ciencias, Universidad de Burgos, Pza. Misael Bañuelos s/n, 09001 Burgos, Spain
| | - Roberto Sanz
- Área
de Química Orgánica, Departamento de Química,
Facultad de Ciencias, Universidad de Burgos, Pza. Misael Bañuelos s/n, 09001 Burgos, Spain
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46
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Synthesis of substituted 3-methylene-2,3-dihydrobenzofurans and 3-methylbenzofurans by rhodium (II)-catalyzed annulation. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.06.075] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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47
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Wang W, Huang J, Zhou R, Jiang ZJ, Fu HY, Zheng XL, Chen H, Li RX. A Simple and Efficient Access to Naphtho[b]furans by Claisen Rearrangement/Cyclization of Bromonaphthyl 3-Phenylallyl Ethers. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201500151] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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48
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Lu P, Feng C, Loh TP. Divergent Functionalization of Indoles with Acryloyl Silanes via Rhodium-Catalyzed C–H Activation. Org Lett 2015; 17:3210-3. [DOI: 10.1021/acs.orglett.5b01258] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ping Lu
- Department
of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Chao Feng
- Department
of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
- Division
of Chemistry and Biological Chemistry, School of Physical and Mathematical
Sciences, Nanyang Technological University, Singapore, 637616, Singapore
| | - Teck-Peng Loh
- Department
of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
- Division
of Chemistry and Biological Chemistry, School of Physical and Mathematical
Sciences, Nanyang Technological University, Singapore, 637616, Singapore
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49
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Affiliation(s)
- Navjeet Kaur
- a Department of Chemistry , Banasthali University , Banasthali , Rajasthan , India
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50
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