1
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Zhou YX, Liu FQ, Wang GQ, Yang D, Han P, Jing LH. Photoredox-catalyzed C(sp 2)-H trifluoromethylation of 3-methylene-isoindolin-1-ones under metal-free conditions. Org Biomol Chem 2024; 22:6928-6932. [PMID: 39119751 DOI: 10.1039/d4ob01046a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/10/2024]
Abstract
A facile synthetic method for direct C(sp2)-H bond trifluoromethylation of 3-methylene-isoindolin-1-ones under visible-light-induced metal-free conditions is presented. This protocol features mild reaction conditions, broad substrate scope and excellent functional group tolerance, resulting in a range of structurally diverse trifluoromethylated products in good to excellent yields.
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Affiliation(s)
- Yuan-Xia Zhou
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637002, China.
| | - Feng-Qian Liu
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637002, China.
| | - Guo-Qin Wang
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637002, China.
| | - Dan Yang
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637002, China.
| | - Pan Han
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637002, China.
| | - Lin-Hai Jing
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637002, China.
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2
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Liu Z, Wang S, Liu Z, Ding Y, Hu Y, Liu R, Zhang Z, Qiu YF, Lei J. DFT study of electron donor-acceptor (EDA) complexes: mechanism exploration and theoretical prediction. Org Biomol Chem 2024. [PMID: 39037724 DOI: 10.1039/d4ob00941j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/23/2024]
Abstract
Organic synthesis methods initiated by visible light have received increasing attention from synthetic chemists. Reactions initiated by EDA complexes do not require the use of toxic or expensive photoredox catalysts, unlike traditional photoreaction processes. However, this kind of reaction requires a particular structure for the substrate, so it is important to study the detailed and systematic reaction mechanism for its design. EDA complexes of substituted 1H-indole and substituted benzyl bromide derivatives were studied by density functional theory (DFT). The difference between EDA complexes with substituents of different kinds and locations were compared by theoretical study and a new EDA complex was predicted.
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Affiliation(s)
- Zhao Liu
- First Hospital of Lanzhou University, Lanzhou University, 222 South Tianshui Road, Lanzhou 730000, P. R. China.
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, China
| | - Shutao Wang
- First Hospital of Lanzhou University, Lanzhou University, 222 South Tianshui Road, Lanzhou 730000, P. R. China.
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, China
| | - Zhiqiang Liu
- First Hospital of Lanzhou University, Lanzhou University, 222 South Tianshui Road, Lanzhou 730000, P. R. China.
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, China
| | - Yating Ding
- First Hospital of Lanzhou University, Lanzhou University, 222 South Tianshui Road, Lanzhou 730000, P. R. China.
| | - Yansong Hu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, China
| | - Runzhang Liu
- First Hospital of Lanzhou University, Lanzhou University, 222 South Tianshui Road, Lanzhou 730000, P. R. China.
| | - Zhengze Zhang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, China
| | - Yi-Feng Qiu
- College of Chemistry and Chemical Engineering, Northwest Normal University, 967 East Anning Road, Lanzhou 730070, P. R. China.
| | - Junqiang Lei
- First Hospital of Lanzhou University, Lanzhou University, 222 South Tianshui Road, Lanzhou 730000, P. R. China.
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3
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Wei R, Wang Y, Zhang J, Wu C, Zhang Z, Zhang D. Visible-Light-Mediated Ring-Opening Geminal Dibromination of Alkenes via Alkoxy Radicals Enabled by Electron Donor-Acceptor Complex. Molecules 2024; 29:3281. [PMID: 39064859 PMCID: PMC11278856 DOI: 10.3390/molecules29143281] [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: 06/17/2024] [Revised: 07/08/2024] [Accepted: 07/09/2024] [Indexed: 07/28/2024] Open
Abstract
An electron donor-acceptor complex was utilized to generate alkoxy radicals from alcohols under mild conditions using visible light. This approach was combined with a hydroxybromination process to achieve the deconstructive functionalization of alkenes, leading to the production of geminal dibromides. Mechanistic investigations indicated the intermediacy of hypervalent iodine (III) compounds.
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Affiliation(s)
- Rong Wei
- State Key Laboratory for Performance and Structure Safety of Petroleum Tubular Goods and Equipment Materials, Tubular Goods Research Institute of CNPC, Xi’an 710077, China; (R.W.); (Z.Z.)
| | - Yuan Wang
- State Key Laboratory for Performance and Structure Safety of Petroleum Tubular Goods and Equipment Materials, Tubular Goods Research Institute of CNPC, Xi’an 710077, China; (R.W.); (Z.Z.)
| | - Juantao Zhang
- State Key Laboratory for Performance and Structure Safety of Petroleum Tubular Goods and Equipment Materials, Tubular Goods Research Institute of CNPC, Xi’an 710077, China; (R.W.); (Z.Z.)
| | - Chunsheng Wu
- National Engineering Laboratory of Low Permeability Oil-Gas Field Exploration and Development, Changqing Oilfield, Xi’an 710018, China;
| | - Zhenhua Zhang
- State Key Laboratory for Performance and Structure Safety of Petroleum Tubular Goods and Equipment Materials, Tubular Goods Research Institute of CNPC, Xi’an 710077, China; (R.W.); (Z.Z.)
| | - Duo Zhang
- Medicine Center, Guangxi University of Science and Technology, Liuzhou 545006, China;
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4
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Ji HT, Song HY, Hou JC, Xu YD, Zeng LN, He WM. Recyclable V 2O 5/g-C 3N 4 Heterojunction-Catalyzed Visible-Light-Promoted C3-H Trifluoromethylation of Quinoxalin-2-(1 H)-ones. J Org Chem 2024; 89:9543-9550. [PMID: 38874168 DOI: 10.1021/acs.joc.4c00937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2024]
Abstract
A visible-light-initiated C-H trifluoromethylation of quinoxalin-2(1H)-ones was established using a Z-scheme V2O5/g-C3N4 heterojunction as a recyclable photocatalyst in an inert atmosphere at room temperature under additive-free and mild conditions. A variety of trifluoromethylated quinoxalin-2-(1H)-one derivatives were heterogeneously generated in moderate to high yields, exhibiting good functional group tolerance. Remarkably, the recyclable V2O5/g-C3N4 catalyst could be reused five times with a slight loss of catalytic activity.
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Affiliation(s)
- Hong-Tao Ji
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
| | - Hai-Yang Song
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
| | - Jia-Cheng Hou
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
| | - Yao-Dan Xu
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
| | - Li-Na Zeng
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
| | - Wei-Min He
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
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5
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Gorelik DJ, Desai SP, Jdanova S, Turner JA, Taylor MS. Transformations of carbohydrate derivatives enabled by photocatalysis and visible light photochemistry. Chem Sci 2024; 15:1204-1236. [PMID: 38274059 PMCID: PMC10806712 DOI: 10.1039/d3sc05400d] [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: 10/12/2023] [Accepted: 12/13/2023] [Indexed: 01/27/2024] Open
Abstract
This review article highlights the diverse ways in which recent developments in the areas of photocatalysis and visible light photochemistry are impacting synthetic carbohydrate chemistry. The major topics covered are photocatalytic glycosylations, generation of radicals at the anomeric position, transformations involving radical formation at non-anomeric positions, additions to glycals, processes initiated by photocatalytic hydrogen atom transfer from sugars, and functional group interconversions at OH and SH groups. Factors influencing stereo- and site-selectivity in these processes, along with mechanistic aspects, are discussed.
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Affiliation(s)
- Daniel J Gorelik
- Department of Chemistry, University of Toronto 80 St. George St. Toronto ON M5S 3H6 Canada
| | - Shrey P Desai
- Department of Chemistry, University of Toronto 80 St. George St. Toronto ON M5S 3H6 Canada
| | - Sofia Jdanova
- Department of Chemistry, University of Toronto 80 St. George St. Toronto ON M5S 3H6 Canada
| | - Julia A Turner
- Department of Chemistry, University of Toronto 80 St. George St. Toronto ON M5S 3H6 Canada
| | - Mark S Taylor
- Department of Chemistry, University of Toronto 80 St. George St. Toronto ON M5S 3H6 Canada
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6
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Zhang J, Luo ZX, Wu X, Gao CF, Wang PY, Chai JZ, Liu M, Ye XS, Xiong DC. Photosensitizer-free visible-light-promoted glycosylation enabled by 2-glycosyloxy tropone donors. Nat Commun 2023; 14:8025. [PMID: 38049421 PMCID: PMC10695961 DOI: 10.1038/s41467-023-43786-y] [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: 05/09/2023] [Accepted: 11/19/2023] [Indexed: 12/06/2023] Open
Abstract
Photochemical glycosylation has attracted considerable attention in carbohydrate chemistry. However, to the best of our knowledge, visible-light-promoted glycosylation via photoactive glycosyl donor has not been reported. In the study, we report a photosensitizer-free visible-light-mediated glycosylation approach using a photoactive 2-glycosyloxy tropone as the donor. This glycosylation reaction proceeds at ambient temperature to give a wide range of O-glycosides or oligosaccharides with yields up to 99%. This method is further applied in the stereoselective preparation of various functional glycosyl phosphates/phosphosaccharides, the construction of N-glycosides/nucleosides, and the late-stage glycosylation of natural products or pharmaceuticals on gram scales, and the iterative synthesis of hexasaccharide. The protocol features uncomplicated conditions, operational simplicity, wide substrate scope (58 examples), excellent compatibility with functional groups, scalability of products (7 examples), and high yields. It provides an efficient glycosylation method for accessing O/N-glycosides and glycans.
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Affiliation(s)
- Jing Zhang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing, 100191, China
| | - Zhao-Xiang Luo
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing, 100191, China
| | - Xia Wu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing, 100191, China
| | - Chen-Fei Gao
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing, 100191, China
| | - Peng-Yu Wang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing, 100191, China
| | - Jin-Ze Chai
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing, 100191, China
| | - Miao Liu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing, 100191, China
| | - Xin-Shan Ye
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing, 100191, China
| | - De-Cai Xiong
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing, 100191, China.
- Ningbo Institute of Marine Medicine, Peking University, Ningbo, 315010, China.
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7
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Duong T, Valenzuela EA, Ragains JR. Benzyne-Promoted, 1,2- cis-Selective O-Glycosylation with Benzylchalcogenoglycoside Donors. Org Lett 2023; 25:8526-8529. [PMID: 37970840 PMCID: PMC10696609 DOI: 10.1021/acs.orglett.3c03502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Revised: 11/11/2023] [Accepted: 11/15/2023] [Indexed: 11/19/2023]
Abstract
Here, we show that the reaction of benzylchalcogenoglycosides with benzyne in the presence of alcohols results in highly 1,2-cis-selective O-glycosylation in a solvent-dependent manner. Thioglycosides, selenoglycosides, and alcohols with a range of nucleophilicities lead to a productive reaction, and unusual protecting groups, auxiliary groups, and additives are avoided.
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Affiliation(s)
- Tiffany Duong
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70806, United States
| | - Erik Alvarez Valenzuela
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70806, United States
| | - Justin R. Ragains
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70806, United States
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8
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Le Zhang, He S, Hou J, Ye M, Chen J, Lv G, Huang T, Yang Z, Wu Y. Visible-light-mediated synthesis of non-anomeric S-aryl glycosides via a photoactive electron-donor-acceptor complex. Chem Commun (Camb) 2023; 59:13759-13762. [PMID: 37916505 DOI: 10.1039/d3cc03474g] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2023]
Abstract
A visible-light-mediated glycosylation reaction between glycosyl redox-active esters and disulfides has been reported, through which a series of S-aryl glycosides were obtained in good yields with satisfactory stereoselectivity. The preliminary mechanistic studies revealed that this transformation proceeded via an EDA complex. Moreover, the potential application value was demonstrated in the late-stage functionalisation of drug molecules and a gram-scale experiment.
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Affiliation(s)
- Le Zhang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Department of Medicinal Chemistry, 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, Chengdu, Sichuan 610041, People's Republic of China.
| | - Shiyun He
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Department of Medicinal Chemistry, 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, Chengdu, Sichuan 610041, People's Republic of China.
| | - Jinyu Hou
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Department of Medicinal Chemistry, 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, Chengdu, Sichuan 610041, People's Republic of China.
| | - Meiling Ye
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Department of Medicinal Chemistry, 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, Chengdu, Sichuan 610041, People's Republic of China.
| | - Jian Chen
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Department of Medicinal Chemistry, 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, Chengdu, Sichuan 610041, People's Republic of China.
| | - Guanghui Lv
- Department of Pharmacy, Hubei Provincial Clinical Research Center for Umbilical Cord Blood Hematopoietic Stem Cells, Taihe Hospital, Hubei University of Medicine, Shiyan 442000, Hubei, China
| | - Tianle Huang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Department of Medicinal Chemistry, 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, Chengdu, Sichuan 610041, People's Republic of China.
| | - Zhongzhen Yang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Department of Medicinal Chemistry, 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, Chengdu, Sichuan 610041, People's Republic of China.
| | - Yong Wu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Department of Medicinal Chemistry, 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, Chengdu, Sichuan 610041, People's Republic of China.
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9
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Kuehner C, Hill AG, Harris CF, Owens CA, Bacsa J, Soper JD. Catalytic C-H Trifluoromethylation of Arenes and Heteroarenes via Visible Light Photoexcitation of a Co(III)-CF 3 Complex. ACS Catal 2023; 13:13607-13617. [PMID: 37881792 PMCID: PMC10594583 DOI: 10.1021/acscatal.3c03832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 09/22/2023] [Indexed: 10/27/2023]
Abstract
A cobalt photocatalyst for direct trifluoromethylation of (hetero)arene C(sp2)-H bonds is described and shown to operate via visible light activation of a Co-CF3 intermediate, which functions as a combined chromophore and organometallic reaction center. Chemical oxidations of previously reported (OCO)Co complexes containing a redox-active [OCO] pincer ligand afford a Co-CF3 complex two oxidation states above Co(II). Computational and spectroscopic studies are consistent with formulation of the product as [(OCO•)CoIII(CF3)(THF)(OTf)] (II) containing an open-shell [OCO•]1- radical ligand bound to a S = 0 Co(III) center. II is thermodynamically stable, but exposure to blue (440 nm) light induces Co-CF3 bond homolysis and release of •CF3, which is trapped by radical acceptors including TEMPO•, (hetero)arenes, or the radical [OCO•] ligand in II. The latter comprises a competitive degradation pathway, which is overcome under catalytic conditions by using excess substrate. Accordingly, generation of II from the reaction of [(OCO)CoIIL] (III) (L = THF, MeCN) with Umemoto's dibenzothiophenium trifluoromethylating reagent (1) followed by photolytic Co-CF3 bond activation completes a photoredox catalytic cycle for C-H (hetero)arene trifluoromethylation utilizing visible light. Electronic structure and photophysical studies, including time-dependent density functional theory (TDDFT) calculations, suggest that Co-CF3 bond homolysis at II occurs via an ligand-to-metal charge-transfer (LMCT) (OCO0)CoII(CF3) state, revealing ligand redox activity as a critical design feature and establishing design principles for the use of base metal chromophores for selectivity in photoredox bond activations occurring via free radical intermediates.
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Affiliation(s)
- Christopher
S. Kuehner
- School
of Chemistry and Biochemistry, Georgia Institute
of Technology, Atlanta, Georgia 30332-0400, United States
| | - Andrew G. Hill
- School
of Chemistry and Biochemistry, Georgia Institute
of Technology, Atlanta, Georgia 30332-0400, United States
| | - Caleb F. Harris
- School
of Chemistry and Biochemistry, Georgia Institute
of Technology, Atlanta, Georgia 30332-0400, United States
| | - Christian A. Owens
- School
of Chemistry and Biochemistry, Georgia Institute
of Technology, Atlanta, Georgia 30332-0400, United States
| | - John Bacsa
- School
of Chemistry and Biochemistry, Georgia Institute
of Technology, Atlanta, Georgia 30332-0400, United States
- X-ray
Crystallography Center, Department of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, Georgia 30322, United States
| | - Jake D. Soper
- School
of Chemistry and Biochemistry, Georgia Institute
of Technology, Atlanta, Georgia 30332-0400, United States
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10
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Dent A, Escopy S, Demchenko AV. Cooperatively Catalyzed Activation of Thioglycosides That Bypasses Intermediacy of Glycosyl Halides. Chemistry 2023; 29:e202300873. [PMID: 37154481 PMCID: PMC11370891 DOI: 10.1002/chem.202300873] [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: 03/19/2023] [Revised: 05/05/2023] [Accepted: 05/08/2023] [Indexed: 05/10/2023]
Abstract
Reported herein is the development of a novel method for activating thioglycosides without a glycosyl halide intermediate. This has been achieved through the use of a silver salt coupled with an acid additive and molecular iodine. The enhanced stereocontrol was achieved via the H-bond mediated aglycone delivery (HAD) method, and the extended trisaccharide synthesis was achieved via iteration of deprotection and glycosylation steps.
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Affiliation(s)
- Ashley Dent
- Department of Chemistry, Saint Louis University, 3501 Laclede Ave, St. Louis, Missouri, 63103, USA
| | - Samira Escopy
- Department of Chemistry, Saint Louis University, 3501 Laclede Ave, St. Louis, Missouri, 63103, USA
| | - Alexei V Demchenko
- Department of Chemistry, Saint Louis University, 3501 Laclede Ave, St. Louis, Missouri, 63103, USA
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11
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van Dalsen L, Brown RE, Rossi‐Ashton JA, Procter DJ. Sulfonium Salts as Acceptors in Electron Donor-Acceptor Complexes. Angew Chem Int Ed Engl 2023; 62:e202303104. [PMID: 36959098 PMCID: PMC10952135 DOI: 10.1002/anie.202303104] [Citation(s) in RCA: 28] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 03/22/2023] [Accepted: 03/23/2023] [Indexed: 03/25/2023]
Abstract
The photoactivation of electron donor-acceptor complexes has emerged as a sustainable, selective and versatile strategy for the generation of radical species. Electron donor-acceptor (EDA) complexation, however, imposes electronic constraints on the donor and acceptor components and this can limit the range of radicals that can be generated using the approach. New EDA complexation strategies exploiting sulfonium salts allow radicals to be generated from native functionality. For example, aryl sulfonium salts, formed by the activation of arenes, can serve as the acceptor components in EDA complexes due to their electron-deficient nature. This "sulfonium tag" approach relaxes the electronic constraints on the parent substrate and dramatically expands the range of radicals that can be generated using EDA complexation. In this review, these new applications of sulfonium salts will be introduced and the areas of chemical space rendered accessible through this innovation will be highlighted.
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Affiliation(s)
| | - Rachel E. Brown
- Department of ChemistryThe University of ManchesterManchesterUK
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12
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Tong X, Li Z, Xi B, Wang Z, Li Y, Xue W. 3,5-Di(trifluoromethyl)phenyl(cyano)iodonium triflate as a novel and potential activator for p-tolyl thioglycoside donors. Org Biomol Chem 2023; 21:2101-2106. [PMID: 36815222 DOI: 10.1039/d2ob01940j] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Abstract
3,5-Di(trifluoromethyl)phenyl(cyano)iodonium triflate is described as an accessible, stable, and powerful thiophile that can activate batches of p-tolyl thioglycoside donors at room temperature. Various alcoholic acceptors were efficiently glycosylated, providing the desired glycosides. The novel activation protocol features mild conditions as well as high compatibility with some classic strategies for the stereoselective construction of some biologically relevant glycosidic linkages, as exemplified by α-idosides, α-galactoamines, β-mannosides, and β-rhamnosides.
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Affiliation(s)
- Xiaowei Tong
- School of Pharmacy, Lanzhou University, Lanzhou 730000, P. R. China.
| | - Zuowa Li
- School of Pharmacy, Lanzhou University, Lanzhou 730000, P. R. China.
| | - Boting Xi
- School of Pharmacy, Lanzhou University, Lanzhou 730000, P. R. China.
| | - Zhaoyan Wang
- School of Pharmacy, Lanzhou University, Lanzhou 730000, P. R. China.
| | - Yuan Li
- School of Pharmacy, Lanzhou University, Lanzhou 730000, P. R. China.
| | - Weihua Xue
- School of Pharmacy, Lanzhou University, Lanzhou 730000, P. R. China.
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13
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Wang Z, Chen J, Lin Z, Quan Y. Photoinduced Dehydrogenative Borylation via Dihydrogen Bond Bridged Electron Donor and Acceptor Complexes. Chemistry 2023; 29:e202203053. [PMID: 36396602 DOI: 10.1002/chem.202203053] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 11/17/2022] [Accepted: 11/17/2022] [Indexed: 11/19/2022]
Abstract
Air-stable amine- and phosphine-boranes are discovered as donors to integrate with pyridinium acceptor for generating photoactive electron-donor-acceptor (EDA) complexes. Experimental results and DFT calculations suggest a dihydrogen bond bridging the donor and acceptor. Irradiating the EDA complex enables an intra-complex single electron transfer to give a boron-centered radical for dehydrogenative borylation with no need of external photosensitizer and radical initiator. The deprotonation of Wheland-like radical intermediate rather than its generation is believed to determine the good ortho-selectivity based on DFT calculations. A variety of α-borylated pyridine derivatives have been readily synthesized with good functional group tolerance.
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Affiliation(s)
- Zhiyong Wang
- Department of Chemistry, The Hong Kong University of Science and Technology Clear Water Bay, Kowloon, Hong Kong SAR, P. R. China
| | - Jiaxin Chen
- Department of Chemistry, The Hong Kong University of Science and Technology Clear Water Bay, Kowloon, Hong Kong SAR, P. R. China
| | - Zhenyang Lin
- Department of Chemistry, The Hong Kong University of Science and Technology Clear Water Bay, Kowloon, Hong Kong SAR, P. R. China
| | - Yangjian Quan
- Department of Chemistry, The Hong Kong University of Science and Technology Clear Water Bay, Kowloon, Hong Kong SAR, P. R. China
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14
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Stini NA, Poursaitidis ET, Nikitas NF, Kartsinis M, Spiliopoulou N, Ananida-Dasenaki P, Kokotos CG. Light-accelerated "on-water" hydroacylation of dialkyl azodicarboxylates. Org Biomol Chem 2023; 21:1284-1293. [PMID: 36645430 DOI: 10.1039/d2ob02204d] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The hydroacylation of dialkyl azodicarboxylates has received a lot of attention lately due to the great importance of acyl hydrazides in organic chemistry. Herein, we report an inexpensive and green photochemical approach, where light irradiation (390 nm) significantly accelerates the reaction between dialkyl azodicarboxylates and aldehydes, while water is employed as the solvent. A variety of aromatic and aliphatic aldehydes were converted into their corresponding acyl hydrazides in good to excellent yields in really short reaction times (15-210 min) and the reaction mechanism was also studied. Applications of this reaction in the syntheses of Vorinostat and Moclobemide were demonstrated.
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Affiliation(s)
- Naya A Stini
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis 15771, Athens, Greece.
| | - Efthymios T Poursaitidis
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis 15771, Athens, Greece.
| | - Nikolaos F Nikitas
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis 15771, Athens, Greece.
| | - Michail Kartsinis
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis 15771, Athens, Greece.
| | - Nikoleta Spiliopoulou
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis 15771, Athens, Greece.
| | - Phoebe Ananida-Dasenaki
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis 15771, Athens, Greece.
| | - Christoforos G Kokotos
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis 15771, Athens, Greece.
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15
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A general arene C-H functionalization strategy via electron donor-acceptor complex photoactivation. Nat Chem 2023; 15:43-52. [PMID: 36471045 DOI: 10.1038/s41557-022-01092-y] [Citation(s) in RCA: 49] [Impact Index Per Article: 49.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Accepted: 10/17/2022] [Indexed: 12/12/2022]
Abstract
The photoactivation of electron donor-acceptor complexes has emerged as a sustainable, selective and versatile strategy for the generation of radical species. However, when it comes to aryl radical formation, this strategy remains hamstrung by the electronic properties of the aromatic radical precursors, and electron-deficient aryl halide acceptors are required. This has prevented the implementation of a general synthetic platform for aryl radical formation. Our study introduces triarylsulfonium salts as acceptors in photoactive electron donor-acceptor complexes, used in combination with catalytic amounts of newly designed amine donors. The sulfonium salt label renders inconsequential the electronic features of the aryl radical precursor and, more importantly, it is installed regioselectively in native aromatic compounds by C-H sulfenylation. Using this general, site-selective aromatic C-H functionalization approach, we developed metal-free protocols for the alkylation and cyanation of arenes, and showcased their application in both the synthesis and the late-stage modification of pharmaceuticals and agrochemicals.
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16
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Shi ZZ, Yu T, Ma H, Chi LX, You S, Deng C. Recent advances in radical cascade cyclization of 1,n-enynes with trifluoromethylating agents. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.133216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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17
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Tsutsui Y, Tanaka D, Manabe Y, Ikinaga Y, Yano K, Fukase K, Konishi A, Yasuda M. Synthesis of Cage‐Shaped Borates Bearing Pyrenylmethyl Groups: Efficient Lewis Acid Catalyst for Photoactivated Glycosylations Driven by Intramolecular Excimer Formation. Chemistry 2022; 28:e202202284. [DOI: 10.1002/chem.202202284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Indexed: 11/08/2022]
Affiliation(s)
- Yuya Tsutsui
- Department of Applied Chemistry Graduate School of Engineering Osaka University 2-1 Yamadaoka Suita Osaka 565-0871 Japan
| | - Daiki Tanaka
- Department of Applied Chemistry Graduate School of Engineering Osaka University 2-1 Yamadaoka Suita Osaka 565-0871 Japan
| | - Yoshiyuki Manabe
- Department of Chemistry Graduate School of Science Osaka University 1-1 Machikaneyama Toyonaka Osaka 560-0043 Japan
- Forefront Research Center Osaka University 1-1 Machikaneyama Toyonaka Osaka 560-0043 Japan
| | - Yuka Ikinaga
- Department of Chemistry Graduate School of Science Osaka University 1-1 Machikaneyama Toyonaka Osaka 560-0043 Japan
| | - Kumpei Yano
- Department of Chemistry Graduate School of Science Osaka University 1-1 Machikaneyama Toyonaka Osaka 560-0043 Japan
| | - Koichi Fukase
- Department of Chemistry Graduate School of Science Osaka University 1-1 Machikaneyama Toyonaka Osaka 560-0043 Japan
- Forefront Research Center Osaka University 1-1 Machikaneyama Toyonaka Osaka 560-0043 Japan
| | - Akihito Konishi
- Department of Applied Chemistry Graduate School of Engineering Osaka University 2-1 Yamadaoka Suita Osaka 565-0871 Japan
- Innovative Catalysis Science Division Institute for Open and Transdisciplinary Research Initiatives (ICS-OTRI) Osaka University Suita Osaka 565-0871 Japan
- Center for Atomic and Molecular Technologies Graduate School of Engineering Osaka University 2-1 Yamadaoka Suita Osaka 565-0871 Japan
| | - Makoto Yasuda
- Department of Applied Chemistry Graduate School of Engineering Osaka University 2-1 Yamadaoka Suita Osaka 565-0871 Japan
- Innovative Catalysis Science Division Institute for Open and Transdisciplinary Research Initiatives (ICS-OTRI) Osaka University Suita Osaka 565-0871 Japan
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18
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Li Y, Liang X, Niu K, Gu J, Liu F, Xia Q, Wang Q, Zhang W. Visible-Light-Induced Photocatalyst-Free Radical Trifluoromethylation. Org Lett 2022; 24:5918-5923. [PMID: 35929868 DOI: 10.1021/acs.orglett.2c02150] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
An attractive, versatile, and operationally simple, visible-light-induced, transition-metal-free, photocatalyst-free, and oxidant-free trifluoromethylation has been demonstrated. Triflic anhydride (Tf2O), being inexpensive and readily available, was chosen as the radical trifluoromethyl source. Thianthrene was used as a recyclable Tf2O-activating reagent, and a high-yielding and scalable trifluoromethylation reaction was achieved. Density functional theory and mechanistic studies showed that a free radical homolytic process excited by visible light is involved in this reaction, generating a key trifluoromethyl radical intermediate.
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Affiliation(s)
- Yufei Li
- Jiangsu Key Laboratory of Pesticide Science, Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Xin Liang
- Jiangsu Key Laboratory of Pesticide Science, Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Kaikai Niu
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, China
| | - Jun Gu
- Jiangsu Key Laboratory of Pesticide Science, Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Fang Liu
- Jiangsu Key Laboratory of Pesticide Science, Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Qing Xia
- Jiangsu Key Laboratory of Pesticide Science, Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Qingmin Wang
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, China
| | - Weihua Zhang
- Jiangsu Key Laboratory of Pesticide Science, Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China
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19
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Zhu DL, Jiang S, Young DJ, Wu Q, Li HY, Li HX. Visible-light-driven C(sp 2)-H arylation of phenols with arylbromides enabled by electron donor-acceptor excitation. Chem Commun (Camb) 2022; 58:3637-3640. [PMID: 35212323 DOI: 10.1039/d1cc07127k] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
We have developed a catalyst-free visible-light-driven C(sp2)-H arylation of unprotected phenols with arylbromides to give 2-arylated phenols. This reaction proceeds through the excitation of an electron donor-acceptor complex between a phenolate and an arylbromide, electron transfer, and debrominative C(sp2)-C(sp2) coupling.
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Affiliation(s)
- Da-Liang Zhu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China. .,School of Chemistry and Environmental Engineering, Analysis and Testing Centre, Yancheng Teachers University, Yancheng 224007, China
| | - Shan Jiang
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China.
| | - David James Young
- College of Engineering, IT and Environment, Charles Darwin University, Darwin, NT 0909, Australia
| | - Qi Wu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China.
| | - Hai-Yan Li
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China.
| | - Hong-Xi Li
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China.
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20
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Wu Q, Zhao YH, Lu-Lu C, Li HY, Li HX. Metal-free photocleavage of C(non-acyl)-S bond of thioesters for regioselective pyridylthioesterification of styrenes. Org Chem Front 2022. [DOI: 10.1039/d2qo00155a] [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
Transformation of thioesters via transition-metal-mediated C(acyl)−S bond cleavage is an emerging method to forge C-C and C-heteroatom bonds. Herein, we report the first activation of stronger C(non-acyl)–S bond of thioesters...
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21
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Escopy S, Demchenko AV. Transition-Metal-Mediated Glycosylation with Thioglycosides. Chemistry 2021; 28:e202103747. [PMID: 34935219 DOI: 10.1002/chem.202103747] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2021] [Indexed: 11/09/2022]
Abstract
Thioglycosides are among the most common glycosyl donors that find broad application in the synthesis of glycans and glycoconjugates. However, the requirement for toxic and/or large access of activators needed for common glycosylations with thioglycosides remains a notable drawback. Due to the increased awareness of the chemical waste impact on the environment, synthetic studies have been driven by the goal of finding non-toxic reagents. The main focus of this review is to highlight recent methods for thioglycoside activation that rely on transition metal catalysis.
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Affiliation(s)
- Samira Escopy
- University of Missouri - St. Louis, Chemistry, UNITED STATES
| | - Alexei V Demchenko
- Saint Louis University, Chemistry, 3501 Laclede Ave, 63103, St. Louis, UNITED STATES
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22
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Zhao G, Li J, Wang T. Visible-light-induced photoacid catalysis: application in glycosylation with O-glycosyl trichloroacetimidates. Chem Commun (Camb) 2021; 57:12659-12662. [PMID: 34768281 DOI: 10.1039/d1cc04887b] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The development of visible-light-induced photoacid catalyzed glycosylation is reported. The eosin Y and PhSSPh catalyst system is applied to realize glycosylation with different glycosyl donors upon light irradiation. The reaction shows a broad substrate scope, including both glycosyl donors and acceptors, and highlights the mild nature of the reaction conditions.
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Affiliation(s)
- Gaoyuan Zhao
- Department of Chemistry, University at Albany, State University of New York, 1400 Washington Avenue, Albany, New York 12222, USA.
| | - Juncheng Li
- Department of Chemistry, University at Albany, State University of New York, 1400 Washington Avenue, Albany, New York 12222, USA.
| | - Ting Wang
- Department of Chemistry, University at Albany, State University of New York, 1400 Washington Avenue, Albany, New York 12222, USA.
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23
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Photochemical C-H acetalization of O-heterocycles utilizing phenylglyoxylic acid as the photoinitiator. Photochem Photobiol Sci 2021; 21:687-694. [PMID: 34750786 DOI: 10.1007/s43630-021-00126-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Accepted: 10/22/2021] [Indexed: 01/15/2023]
Abstract
A novel, mild, metal-free and easy-to-execute procedure for the C-H acetalization of O-heterocycles via visible light activation is presented, utilizing phenylglyoxylic acid as the photoinitiator. Biomass-derived O-heterocycles, like THF, can be employed, while primary, secondary alcohols and alcohols bearing a variety of functionalities were succesfully employed, affording the desired acetals in high yields. Facile acidic deprotection was also performed.
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24
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Chalotra N, Shah IH, Raheem S, Rizvi MA, Shah BA. Visible-Light-Promoted Oxidative Annulation of Naphthols and Alkynes: Synthesis of Functionalized Naphthofurans. J Org Chem 2021; 86:16770-16784. [PMID: 34726928 DOI: 10.1021/acs.joc.1c01992] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
A visible-light-mediated site-selective oxidative annulation of naphthols with alkynes for the synthesis of functionalized naphthofurans has been developed. The reaction relies on the in situ formation of an electron donor acceptor pair between phenylacetylene and thiophenol as the light-absorbing system to obviate the requirement of an added photocatalyst. The protocol facilitates the transformation of 1-naphthol and 2-naphthol as well as 1,4-naphthoquinone into a wide variety of highly functionalized naphthofurans.
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Affiliation(s)
- Neha Chalotra
- Academy of Scientific and Industrial Research (AcSIR), Ghaziabad 201002, India.,Natural Product & Medicinal Chemistry, CSIR-Indian Institute of Integrative Medicine, Jammu 180001, India
| | - Iftkhar Hussain Shah
- Academy of Scientific and Industrial Research (AcSIR), Ghaziabad 201002, India.,Natural Product & Medicinal Chemistry, CSIR-Indian Institute of Integrative Medicine, Jammu 180001, India
| | - Shabnam Raheem
- Department of Chemistry, University of Kashmir, Srinagar 190006, India
| | | | - Bhahwal Ali Shah
- Academy of Scientific and Industrial Research (AcSIR), Ghaziabad 201002, India.,Natural Product & Medicinal Chemistry, CSIR-Indian Institute of Integrative Medicine, Jammu 180001, India
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25
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Cao Y, Zhou M, Mao RZ, Zou Y, Xia F, Liu DK, Liu J, Li Q, Xiong DC, Ye XS. Visible-light-promoted 3,5-dimethoxyphenyl glycoside activation and glycosylation. Chem Commun (Camb) 2021; 57:10899-10902. [PMID: 34590634 DOI: 10.1039/d1cc04473g] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A new glycosylation method promoted by visible light with 3,5-dimethoxyphenyl glycoside as the donor was developed. This protocol delivers both O-glycosides and N-glycosides in moderate to excellent yields using a wide range of O-nucleophiles and nucleobases as the glycosyl acceptors.
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Affiliation(s)
- Yafei Cao
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing 100191, China.
| | - Minmin Zhou
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing 100191, China. .,School of Chemical Engineering, Dalian University of Technology, Dalian 116024, Liaoning, China
| | - Run-Ze Mao
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing 100191, China.
| | - You Zou
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing 100191, China.
| | - Feng Xia
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing 100191, China.
| | - Da-Ke Liu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing 100191, China.
| | - Jianhui Liu
- School of Chemical Engineering, Dalian University of Technology, Dalian 116024, Liaoning, China
| | - Qin Li
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing 100191, China.
| | - De-Cai Xiong
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing 100191, China. .,State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing 210023, Jiangsu, China
| | - Xin-Shan Ye
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing 100191, China.
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26
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Ding YN, Huang YC, Shi WY, Zheng N, Wang CT, Chen X, An Y, Zhang Z, Liang YM. Modular Synthesis of Aryl Thio/Selenoglycosides via the Catellani Strategy. Org Lett 2021; 23:5641-5646. [PMID: 34251824 DOI: 10.1021/acs.orglett.1c01723] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We described a novel palladium-catalyzed domino procedure for the preparation of (hetero)aryl thio/selenoglycosides. Readily available (hetero)aryl iodides and easily accessible 1-thiosugars/1-selenosugars are utilized as the substrates. Meanwhile, 10 types of sugars are quite compatible with this reaction with good regio- and stereoselectivity, high efficiency, and broad applicability (up to 89%, 53 examples). This method enables the straightforward formation of the C(sp2)-S/Se bond of (hetero)aryl thio/selenoglycosides.
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Affiliation(s)
- Ya-Nan Ding
- State Key Laboratory of Applied Organic Chemistry, School of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Yan-Chong Huang
- State Key Laboratory of Applied Organic Chemistry, School of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Wei-Yu Shi
- State Key Laboratory of Applied Organic Chemistry, School of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Nian Zheng
- State Key Laboratory of Applied Organic Chemistry, School of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Cui-Tian Wang
- State Key Laboratory of Applied Organic Chemistry, School of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Xi Chen
- State Key Laboratory of Applied Organic Chemistry, School of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Yang An
- State Key Laboratory of Applied Organic Chemistry, School of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Zhe Zhang
- State Key Laboratory of Applied Organic Chemistry, School of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Yong-Min Liang
- State Key Laboratory of Applied Organic Chemistry, School of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
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27
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Nikitas NF, Apostolopoulou MK, Skolia E, Tsoukaki A, Kokotos CG. Photochemical Activation of Aromatic Aldehydes: Synthesis of Amides, Hydroxamic Acids and Esters. Chemistry 2021; 27:7915-7922. [PMID: 33772903 DOI: 10.1002/chem.202100655] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2021] [Indexed: 12/17/2022]
Abstract
A cheap, facile and metal-free photochemical protocol for the activation of aromatic aldehydes has been developed. Utilizing thioxanthen-9-one as the photocatalyst and cheap household lamps as the light source, a variety of aromatic aldehydes have been activated and subsequently converted in a one-pot reaction into amides, hydroxamic acids and esters in good to high yields. The applicability of this method was highlighted in the synthesis of Moclobemide, a drug against depression and social anxiety. Extended and detailed mechanistic studies have been conducted, in order to determine a plausible mechanism for the reaction.
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Affiliation(s)
- Nikolaos F Nikitas
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens Panepistimioupolis, 15771, Athens, Greece
| | - Mary K Apostolopoulou
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens Panepistimioupolis, 15771, Athens, Greece
| | - Elpida Skolia
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens Panepistimioupolis, 15771, Athens, Greece
| | - Anna Tsoukaki
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens Panepistimioupolis, 15771, Athens, Greece
| | - Christoforos G Kokotos
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens Panepistimioupolis, 15771, Athens, Greece
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28
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Liu Y, Jiao Y, Luo H, Huang N, Lai M, Zou K, Yao H. Catalyst-Controlled Regiodivergent Synthesis of 1- and 3-Thiosugars with High Stereoselectivity and Chemoselectivity. ACS Catal 2021. [DOI: 10.1021/acscatal.1c00225] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Yuexin Liu
- Hubei Key Laboratory of Natural Products Research and Development, Key Laboratory of Functional Yeast (China National Light Industry), College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang 443002, P. R. China
| | - Yang Jiao
- Hubei Key Laboratory of Natural Products Research and Development, Key Laboratory of Functional Yeast (China National Light Industry), College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang 443002, P. R. China
| | - Huajun Luo
- Hubei Key Laboratory of Natural Products Research and Development, Key Laboratory of Functional Yeast (China National Light Industry), College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang 443002, P. R. China
| | - Nianyu Huang
- Hubei Key Laboratory of Natural Products Research and Development, Key Laboratory of Functional Yeast (China National Light Industry), College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang 443002, P. R. China
| | - Mengnan Lai
- Hubei Key Laboratory of Natural Products Research and Development, Key Laboratory of Functional Yeast (China National Light Industry), College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang 443002, P. R. China
| | - Kun Zou
- Hubei Key Laboratory of Natural Products Research and Development, Key Laboratory of Functional Yeast (China National Light Industry), College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang 443002, P. R. China
| | - Hui Yao
- Hubei Key Laboratory of Natural Products Research and Development, Key Laboratory of Functional Yeast (China National Light Industry), College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang 443002, P. R. China
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29
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Abstract
Described herein is the first example of glycosidation of thioglycosides in the presence of palladium(ii) bromide. While the activation with PdBr2 alone was proven feasible, higher yields and cleaner reactions were achieved when these glycosylations were performed in the presence of propargyl bromide as an additive. Preliminary mechanistic studies suggest that propargyl bromide assists the reaction by creating an ionizing complex, which accelerates the leaving group departure. A variety of thioglycoside donors in reactions with different glycosyl acceptors were investigated to determine the initial scope of this new reaction. Selective and chemoselective activation of thioglycosides over other leaving groups has also been explored.
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Affiliation(s)
- Samira Escopy
- Department of Chemistry and Biochemistry, University of Missouri - St. Louis, One University Boulevard, St. Louis, MO 63121, USA.
| | - Yashapal Singh
- Department of Chemistry and Biochemistry, University of Missouri - St. Louis, One University Boulevard, St. Louis, MO 63121, USA.
| | - Alexei V Demchenko
- Department of Chemistry and Biochemistry, University of Missouri - St. Louis, One University Boulevard, St. Louis, MO 63121, USA.
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30
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Dutta A, Patra SK, Khatua S, Nongkhlaw R. Visible-light-mediated synthesis of 3,4,5-trisubstituted furan-2-one derivatives via a bifunctional organo photocatalyst. NEW J CHEM 2021. [DOI: 10.1039/d1nj03238k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
This protocol demonstrates sustainable synthesis of furan-2-one derivatives using organo photocatalyst under visible-light irradiation and DFT studies of the compound.
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Affiliation(s)
- Arup Dutta
- Centre for Advanced Studies in Chemistry, Department of Chemistry, North-Eastern Hill University, Shillong-793022, India
| | - Sumit Kumar Patra
- Centre for Advanced Studies in Chemistry, Department of Chemistry, North-Eastern Hill University, Shillong-793022, India
| | - Snehadrinarayan Khatua
- Centre for Advanced Studies in Chemistry, Department of Chemistry, North-Eastern Hill University, Shillong-793022, India
| | - Rishanlang Nongkhlaw
- Centre for Advanced Studies in Chemistry, Department of Chemistry, North-Eastern Hill University, Shillong-793022, India
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31
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Cai L, Meng L, Zeng J, Wan Q. Sequential activation of thioglycosides enables one-pot glycosylation. Org Chem Front 2021. [DOI: 10.1039/d0qo01414a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
This review describes recent developments in relative reactivity value (RRV) controlled sequential glycosylation, pre-activation based iterative glycosylation, and sulfoxide activation initiated one-pot glycosylation.
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Affiliation(s)
- Lei Cai
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation
- School of Pharmacy
- Huazhong University of Science and Technology
- Wuhan
- China
| | - Lingkui Meng
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation
- School of Pharmacy
- Huazhong University of Science and Technology
- Wuhan
- China
| | - Jing Zeng
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation
- School of Pharmacy
- Huazhong University of Science and Technology
- Wuhan
- China
| | - Qian Wan
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation
- School of Pharmacy
- Huazhong University of Science and Technology
- Wuhan
- China
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32
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Skolia E, Apostolopoulou MK, Nikitas NF, Kokotos CG. Photochemical Synthesis of Benzimidazoles from Diamines and Aldehydes. European J Org Chem 2020. [DOI: 10.1002/ejoc.202001357] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Elpida Skolia
- Laboratory of Organic Chemistry, Department of Chemistry National and Kapodistrian University of Athens Panepistimiopolis 15771 Athens Greece
| | - Mary K. Apostolopoulou
- Laboratory of Organic Chemistry, Department of Chemistry National and Kapodistrian University of Athens Panepistimiopolis 15771 Athens Greece
| | - Nikolaos F. Nikitas
- Laboratory of Organic Chemistry, Department of Chemistry National and Kapodistrian University of Athens Panepistimiopolis 15771 Athens Greece
| | - Christoforos G. Kokotos
- Laboratory of Organic Chemistry, Department of Chemistry National and Kapodistrian University of Athens Panepistimiopolis 15771 Athens Greece
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33
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Ji P, Zhang Y, Gao F, Bi F, Wang W. Direct, stereoselective thioglycosylation enabled by an organophotoredox radical strategy. Chem Sci 2020; 11:13079-13084. [PMID: 34094490 PMCID: PMC8163235 DOI: 10.1039/d0sc04136j] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Accepted: 10/19/2020] [Indexed: 12/13/2022] Open
Abstract
While strategies involving a 2e- transfer pathway have dictated glycosylation development, the direct glycosylation of readily accessible glycosyl donors as radical precursors is particularly appealing because of high radical anomeric selectivity and atom- and step-economy. However, the development of the radical process has been challenging owing to notorious competing reduction, elimination and/or SN side reactions of commonly used, labile glycosyl donors. Here we introduce an organophotocatalytic strategy through which glycosyl bromides can be efficiently converted into corresponding anomeric radicals by photoredox mediated HAT catalysis without a transition metal or a directing group and achieve highly anomeric selectivity. The power of this platform has been demonstrated by the mild reaction conditions enabling the synthesis of challenging α-1,2-cis-thioglycosides, the tolerance of various functional groups and the broad substrate scope for both common pentoses and hexoses. Furthermore, this general approach is compatible with both sp2 and sp3 sulfur electrophiles and late-stage glycodiversification for a total of 50 substrates probed.
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Affiliation(s)
- Peng Ji
- Departments of Pharmacology and Toxicology and Chemistry and Biochemistry, BIO5 Institute, and University of Arizona Cancer Centre, University of Arizona Tucson AZ 85721 USA
| | - Yueteng Zhang
- Departments of Pharmacology and Toxicology and Chemistry and Biochemistry, BIO5 Institute, and University of Arizona Cancer Centre, University of Arizona Tucson AZ 85721 USA
| | - Feng Gao
- Departments of Pharmacology and Toxicology and Chemistry and Biochemistry, BIO5 Institute, and University of Arizona Cancer Centre, University of Arizona Tucson AZ 85721 USA
| | - Fangchao Bi
- Departments of Pharmacology and Toxicology and Chemistry and Biochemistry, BIO5 Institute, and University of Arizona Cancer Centre, University of Arizona Tucson AZ 85721 USA
| | - Wei Wang
- Departments of Pharmacology and Toxicology and Chemistry and Biochemistry, BIO5 Institute, and University of Arizona Cancer Centre, University of Arizona Tucson AZ 85721 USA
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34
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Li BH, Ye XS. Recent advances in glycan synthesis. Curr Opin Chem Biol 2020; 58:20-27. [PMID: 32480314 DOI: 10.1016/j.cbpa.2020.04.009] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Revised: 04/04/2020] [Accepted: 04/13/2020] [Indexed: 12/29/2022]
Abstract
Carbohydrates play important roles in life science, but their synthesis is always hampered by their complicated chemical structures. Scientists have never stopped trying to solve the problem of glycan synthesis from various aspects. Here a brief overview of recent progress in glycan synthesis, including chemical approaches, chemoenzymatic approaches, and automated synthesis, will be discussed, focusing on the efficiency of new glycosylation methods, the stereoselectivity of coupled products, and their applications in the assembly of complex glycan chains.
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Affiliation(s)
- Bo-Han Li
- Institute of Systems Biomedicine, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China
| | - Xin-Shan Ye
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University Health Science Center, Beijing 100191, China.
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35
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Liu J, Yin S, Wang H, Li H, Ni G. A visible light promoted O-glycosylation with glycosyl trichloroacetimidates using eosin Y as an organo photoacid. Carbohydr Res 2020; 490:107963. [DOI: 10.1016/j.carres.2020.107963] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Revised: 02/23/2020] [Accepted: 02/25/2020] [Indexed: 11/29/2022]
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36
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Crisenza GM, Mazzarella D, Melchiorre P. Synthetic Methods Driven by the Photoactivity of Electron Donor-Acceptor Complexes. J Am Chem Soc 2020; 142:5461-5476. [PMID: 32134647 PMCID: PMC7099579 DOI: 10.1021/jacs.0c01416] [Citation(s) in RCA: 485] [Impact Index Per Article: 121.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Indexed: 12/14/2022]
Abstract
The association of an electron-rich substrate with an electron-accepting molecule can generate a new molecular aggregate in the ground state, called an electron donor-acceptor (EDA) complex. Even when the two precursors do not absorb visible light, the resulting EDA complex often does. In 1952, Mulliken proposed a quantum-mechanical theory to rationalize the formation of such colored EDA complexes. However, and besides a few pioneering studies in the 20th century, it is only in the past few years that the EDA complex photochemistry has been recognized as a powerful strategy for expanding the potential of visible-light-driven radical synthetic chemistry. Here, we explain why this photochemical synthetic approach was overlooked for so long. We critically discuss the historical context, scientific reasons, serendipitous observations, and landmark discoveries that were essential for progress in the field. We also outline future directions and identify the key advances that are needed to fully exploit the potential of the EDA complex photochemistry.
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Affiliation(s)
- Giacomo
E. M. Crisenza
- ICIQ
− Institute of Chemical Research of Catalonia, Barcelona Institute of Science and Technology, Avinguda Països Catalans 16, 43007 Tarragona, Spain
| | - Daniele Mazzarella
- ICIQ
− Institute of Chemical Research of Catalonia, Barcelona Institute of Science and Technology, Avinguda Països Catalans 16, 43007 Tarragona, Spain
| | - Paolo Melchiorre
- ICIQ
− Institute of Chemical Research of Catalonia, Barcelona Institute of Science and Technology, Avinguda Països Catalans 16, 43007 Tarragona, Spain
- ICREA, Passeig Lluís Companys 23, 08010 Barcelona, Spain
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37
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Zhao X, Zeng J, Meng L, Wan Q. Application of Interrupted Pummerer Reaction Mediated (IPRm) Glycosylation in Natural Product Synthesis. CHEM REC 2020; 20:743-751. [DOI: 10.1002/tcr.201900097] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Revised: 01/16/2020] [Accepted: 01/17/2020] [Indexed: 01/28/2023]
Affiliation(s)
- Xiang Zhao
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of PharmacyHuazhong University of Science and Technology 13 Hangkong Road, Wuhan Hubei 430030 China
| | - Jing Zeng
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of PharmacyHuazhong University of Science and Technology 13 Hangkong Road, Wuhan Hubei 430030 China
| | - Lingkui Meng
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of PharmacyHuazhong University of Science and Technology 13 Hangkong Road, Wuhan Hubei 430030 China
| | - Qian Wan
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of PharmacyHuazhong University of Science and Technology 13 Hangkong Road, Wuhan Hubei 430030 China
- Institute of Brain ResearchHuazhong University of Science and Technology China
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38
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Yang X, Zhu Y, Xie Z, Li Y, Zhang Y. Visible-Light-Induced Charge Transfer Enables Csp3–H Functionalization of Glycine Derivatives: Access to 1,3-Oxazolidines. Org Lett 2020; 22:1638-1643. [DOI: 10.1021/acs.orglett.0c00234] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xiaorong Yang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Yin Zhu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Zhixiang Xie
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Ying Li
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Yuan Zhang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, P. R. China
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39
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Abstract
In the review, recent advances in the synthetic applications of trifluoroacetimidoyl halides have been summarized.
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Affiliation(s)
- Zhengkai Chen
- Department of Chemistry
- Zhejiang Sci-Tech University
- Hangzhou 310018
- China
| | - Sipei Hu
- Department of Chemistry
- Zhejiang Sci-Tech University
- Hangzhou 310018
- China
| | - Xiao-Feng Wu
- Department of Chemistry
- Zhejiang Sci-Tech University
- Hangzhou 310018
- China
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock
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40
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Li BH, Yao W, Yang H, Wu C, Xiong DC, Yin Y, Ye XS. Total synthesis of tumor-associated KH-1 antigen core nonasaccharideviaphoto-induced glycosylation. Org Chem Front 2020. [DOI: 10.1039/d0qo00314j] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
KH-1 antigen core nonasaccharide was efficiently assembled by photo-induced glycosylation.
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Affiliation(s)
- Bo-Han Li
- Institute of Systems Biomedicine
- Department of Pathology
- Beijing Key Laboratory of Tumor Systems Biology
- School of Basic Medical Sciences
- Peking University Health Science Center
| | - Wenlong Yao
- State Key Laboratory of Natural and Biomimetic Drugs
- School of Pharmaceutical Sciences
- Peking University
- Beijing 100191
- China
| | - Hong Yang
- State Key Laboratory of Natural and Biomimetic Drugs
- School of Pharmaceutical Sciences
- Peking University
- Beijing 100191
- China
| | - Congying Wu
- Institute of Systems Biomedicine
- Department of Pathology
- Beijing Key Laboratory of Tumor Systems Biology
- School of Basic Medical Sciences
- Peking University Health Science Center
| | - De-Cai Xiong
- State Key Laboratory of Natural and Biomimetic Drugs
- School of Pharmaceutical Sciences
- Peking University
- Beijing 100191
- China
| | - Yuxin Yin
- Institute of Systems Biomedicine
- Department of Pathology
- Beijing Key Laboratory of Tumor Systems Biology
- School of Basic Medical Sciences
- Peking University Health Science Center
| | - Xin-Shan Ye
- State Key Laboratory of Natural and Biomimetic Drugs
- School of Pharmaceutical Sciences
- Peking University
- Beijing 100191
- China
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41
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Courant T, Lombard M, Boyarskaya DV, Neuville L, Masson G. Tritylium assisted iodine catalysis for the synthesis of unsymmetrical triarylmethanes. Org Biomol Chem 2020; 18:6502-6508. [PMID: 32789393 DOI: 10.1039/d0ob01502d] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The combined Lewis acid catalytic system, generated from molecular iodine and tritylium tetrafluoroborate effectively catalyzed the Friedel-Crafts (FC) arylation of diarylmethyl sulfides providing an efficient access to various unsymmetrical triarylmethanes. The addition of tritylium and iodine created a more active catalytic system to promote the cleavage of sulfidic C-S bonds.
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Affiliation(s)
- Thibaut Courant
- Institut de Chimie des Substances Naturelles CNRS, Univ. Paris-Saclay, 1 Avenue de la Terrasse, 91198 Gif-sur-Yvette Cedex, France.
| | - Marine Lombard
- Institut de Chimie des Substances Naturelles CNRS, Univ. Paris-Saclay, 1 Avenue de la Terrasse, 91198 Gif-sur-Yvette Cedex, France.
| | - Dina V Boyarskaya
- Institut de Chimie des Substances Naturelles CNRS, Univ. Paris-Saclay, 1 Avenue de la Terrasse, 91198 Gif-sur-Yvette Cedex, France.
| | - Luc Neuville
- Institut de Chimie des Substances Naturelles CNRS, Univ. Paris-Saclay, 1 Avenue de la Terrasse, 91198 Gif-sur-Yvette Cedex, France.
| | - Géraldine Masson
- Institut de Chimie des Substances Naturelles CNRS, Univ. Paris-Saclay, 1 Avenue de la Terrasse, 91198 Gif-sur-Yvette Cedex, France.
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42
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Li QW, Su YX, Zou H, Chen YY, Zhou L, Hou XH, Liu N, Wu ZQ. Self-assembly and fluorescence emission of UV-responsive azobenzene-containing helical poly(phenyl isocyanide) copolymers. Polym Chem 2020. [DOI: 10.1039/d0py01072c] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
UV-responsive azobenzene-containing helical copolymers were obtained, and their self-assembly and fluorescent properties were investigated.
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Affiliation(s)
- Qian-Wei Li
- Department of Polymer Science and Engineering
- School of Chemistry and Chemical Engineering
- and Anhui Key Laboratory of Advanced Catalytic Materials and Reaction Engineering
- Hefei University of Technology
- Hefei 230009
| | - Yi-Xu Su
- Department of Polymer Science and Engineering
- School of Chemistry and Chemical Engineering
- and Anhui Key Laboratory of Advanced Catalytic Materials and Reaction Engineering
- Hefei University of Technology
- Hefei 230009
| | - Hui Zou
- Department of Polymer Science and Engineering
- School of Chemistry and Chemical Engineering
- and Anhui Key Laboratory of Advanced Catalytic Materials and Reaction Engineering
- Hefei University of Technology
- Hefei 230009
| | - Yong-Yuan Chen
- Department of Polymer Science and Engineering
- School of Chemistry and Chemical Engineering
- and Anhui Key Laboratory of Advanced Catalytic Materials and Reaction Engineering
- Hefei University of Technology
- Hefei 230009
| | - Li Zhou
- Department of Polymer Science and Engineering
- School of Chemistry and Chemical Engineering
- and Anhui Key Laboratory of Advanced Catalytic Materials and Reaction Engineering
- Hefei University of Technology
- Hefei 230009
| | - Xiao-Hua Hou
- Department of Polymer Science and Engineering
- School of Chemistry and Chemical Engineering
- and Anhui Key Laboratory of Advanced Catalytic Materials and Reaction Engineering
- Hefei University of Technology
- Hefei 230009
| | - Na Liu
- Department of Polymer Science and Engineering
- School of Chemistry and Chemical Engineering
- and Anhui Key Laboratory of Advanced Catalytic Materials and Reaction Engineering
- Hefei University of Technology
- Hefei 230009
| | - Zong-Quan Wu
- Department of Polymer Science and Engineering
- School of Chemistry and Chemical Engineering
- and Anhui Key Laboratory of Advanced Catalytic Materials and Reaction Engineering
- Hefei University of Technology
- Hefei 230009
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43
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Ho HE, Pagano A, Rossi-Ashton JA, Donald JR, Epton RG, Churchill JC, James MJ, O'Brien P, Taylor RJK, Unsworth WP. Visible-light-induced intramolecular charge transfer in the radical spirocyclisation of indole-tethered ynones. Chem Sci 2019; 11:1353-1360. [PMID: 34123259 PMCID: PMC8148050 DOI: 10.1039/c9sc05311e] [Citation(s) in RCA: 69] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Indole-tethered ynones form an intramolecular electron donor–acceptor complex that can undergo visible-light-induced charge transfer to promote thiyl radical generation from thiols. This initiates a novel radical chain sequence, based on dearomatising spirocyclisation with concomitant C–S bond formation. Sulfur-containing spirocycles are formed in high yields using this simple and mild synthetic protocol, in which neither transition metal catalysts nor photocatalysts are required. The proposed mechanism is supported by various mechanistic studies, and the unusual radical initiation mode represents only the second report of the use of an intramolecular electron donor–acceptor complex in synthesis. Indole-tethered ynones form an intramolecular electron donor–acceptor complex that can undergo visible-light-induced charge transfer to promote thiyl radical generation from thiols.![]()
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Affiliation(s)
- Hon Eong Ho
- Department of Chemistry, University of York York YO10 5DD UK
| | - Angela Pagano
- Department of Chemistry and Industrial Chemistry, University of Genova via Dodecaneso, 31 16146 Genova Italy
| | | | - James R Donald
- Department of Chemistry, University of York York YO10 5DD UK
| | - Ryan G Epton
- Department of Chemistry, University of York York YO10 5DD UK
| | | | - Michael J James
- Department of Chemistry, University of York York YO10 5DD UK
| | - Peter O'Brien
- Department of Chemistry, University of York York YO10 5DD UK
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44
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Yang M, Cao T, Xu T, Liao S. Visible-Light-Induced Deaminative Thioesterification of Amino Acid Derived Katritzky Salts via Electron Donor-Acceptor Complex Formation. Org Lett 2019; 21:8673-8678. [PMID: 31638821 DOI: 10.1021/acs.orglett.9b03284] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A visible-light-mediated deaminative thioesterification of amino acid derived Katritzky salts with thiobenzoic acid has been developed, which provides a novel synthetic method for the synthesis of α-mercapto acid derivatives under mild conditions. This photoredox catalyst-free generation of alkyl radicals via C-N bond cleavage is enabled by the formation of an electron-donor-acceptor (EDA) complex between the Katritzky salt and thiobenzoic acid anion, which represents a new entry for EDA complex chemistry.
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Affiliation(s)
- Mingcheng Yang
- Key Laboratory of Molecule Synthesis and Function Discovery, College of Chemistry , Fuzhou University , 2 Xueyuan Road , Fuzhou 350116 , P.R. China
| | - Tianpeng Cao
- Key Laboratory of Molecule Synthesis and Function Discovery, College of Chemistry , Fuzhou University , 2 Xueyuan Road , Fuzhou 350116 , P.R. China
| | - Tianxiao Xu
- Key Laboratory of Molecule Synthesis and Function Discovery, College of Chemistry , Fuzhou University , 2 Xueyuan Road , Fuzhou 350116 , P.R. China
| | - Saihu Liao
- Key Laboratory of Molecule Synthesis and Function Discovery, College of Chemistry , Fuzhou University , 2 Xueyuan Road , Fuzhou 350116 , P.R. China.,Beijing National Laboratory for Molecular Sciences (BNLMS) , Fuzhou University , Fuzhou 350116 , P.R. China
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45
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Sideri IK, Voutyritsa E, Kokotos CG. Photochemical Hydroacylation of Michael Acceptors Utilizing an Aldehyde as Photoinitiator. CHEMSUSCHEM 2019; 12:4194-4201. [PMID: 31353792 DOI: 10.1002/cssc.201901725] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Revised: 07/26/2019] [Indexed: 06/10/2023]
Abstract
The hydroacylation of Michael acceptors constitutes a useful tool for the formation of new C-C bonds. In this work, an environmentally friendly procedure was developed, utilizing 4cyanobenzaldehyde as the photoinitiator and household bulbs as the irradiation source. A great variety of substrates was well-tolerated, leading to good yields, and mechanistic experiments were performed to elucidate the catalyst's possible mechanistic pathway. Moreover, the inherent selectivity challenge regarding α,α-disubstituted aldehydes (decarbonylation problem) was studied and addressed.
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Affiliation(s)
- Ioanna K Sideri
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, 15771, Athens, Greece
| | - Errika Voutyritsa
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, 15771, Athens, Greece
| | - Christoforos G Kokotos
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, 15771, Athens, Greece
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46
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Guo W, Tao K, Xie Z, Cai L, Zhao M, Tan W, Liu G, Mei W, Deng L, Fan X, Zheng L. Photodriven Photocatalyst/Metal-Free Direct C–C/C–N Bond Formation: Synthesis of Indoles via EDA Complexes. J Org Chem 2019; 84:14168-14178. [DOI: 10.1021/acs.joc.9b01689] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Wei Guo
- Key Laboratory of Organo-pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, China
| | - Kailiang Tao
- Key Laboratory of Organo-pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, China
| | - Zhen Xie
- Key Laboratory of Organo-pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, China
| | - Liuhuan Cai
- Key Laboratory of Organo-pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, China
| | - Mingming Zhao
- Key Laboratory of Organo-pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, China
| | - Wen Tan
- Key Laboratory of Organo-pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, China
| | - Gongping Liu
- Key Laboratory of Organo-pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, China
| | - Weijie Mei
- Key Laboratory of Organo-pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, China
| | - Ling Deng
- Key Laboratory of Organo-pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, China
| | - Xiaolin Fan
- Key Laboratory of Organo-pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, China
| | - Lvyin Zheng
- Key Laboratory of Organo-pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, China
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47
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Ren X, Lu Z. Visible light promoted difunctionalization reactions of alkynes. CHINESE JOURNAL OF CATALYSIS 2019. [DOI: 10.1016/s1872-2067(19)63278-x] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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48
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Abstract
Because of their pivotal biological functions, attention to sugars and glycobiology has grown rapidly in recent decades, leading to increased demand for homogeneous oligosaccharides. The stereoselective preparation of oligosaccharides by chemical means remains challenging and continues to be a vivid research area for organic chemists. In the past decade, new approaches and reinvestigated traditional methods have transformed the field. These developments include novel catalyses, various types of glycosylation modulators and the use of photochemical energy to facilitate glycosylation. This Minireview presents a brief overview of the latest trends in chemical glycosylation, with emphasis on the stereoselective synthetic protocols developed in the past decade.
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Affiliation(s)
- Jesse Ling
- Department of Chemistry, Tufts University, 62 Talbot Ave., Medford, MA 02155, USA
| | - Clay S Bennett
- Department of Chemistry, Tufts University, 62 Talbot Ave., Medford, MA 02155, USA
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49
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Wang R, Wang L, Xu Q, Ren BY, Liang F. Visible-Light-Promoted [5 + 1] Annulation Initiated by Electron-Donor–Acceptor Complexes: Synthesis of Perfluoroalkyl-s-Triazines. Org Lett 2019; 21:3072-3076. [DOI: 10.1021/acs.orglett.9b00655] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Rui Wang
- Department of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Lili Wang
- Department of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Qin Xu
- College of Applied Chemistry, Shenyang University of Chemical Technology, Shenyang 110142, China
| | - Bao-Yi Ren
- College of Applied Chemistry, Shenyang University of Chemical Technology, Shenyang 110142, China
| | - Fushun Liang
- Department of Chemistry, Northeast Normal University, Changchun 130024, China
- College of Chemistry, Liaoning University, Shenyang 110036, China
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50
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Wu J, Grant PS, Li X, Noble A, Aggarwal VK. Catalyst-Free Deaminative Functionalizations of Primary Amines by Photoinduced Single-Electron Transfer. Angew Chem Int Ed Engl 2019; 58:5697-5701. [PMID: 30794331 PMCID: PMC6492299 DOI: 10.1002/anie.201814452] [Citation(s) in RCA: 218] [Impact Index Per Article: 43.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2019] [Indexed: 12/17/2022]
Abstract
The use of pyridinium-activated primary amines as photoactive functional groups for deaminative generation of alkyl radicals under catalyst-free conditions is described. By taking advantage of the visible light absorptivity of electron donor-acceptor complexes between Katritzky pyridinium salts and either Hantzsch ester or Et3 N, photoinduced single-electron transfer could be initiated in the absence of a photocatalyst. This general reactivity platform has been applied to deaminative alkylation (Giese), allylation, vinylation, alkynylation, thioetherification, and hydrodeamination reactions. The mild conditions are amenable to a diverse range of primary and secondary alkyl pyridiniums and demonstrate broad functional group tolerance.
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Affiliation(s)
- Jingjing Wu
- School of ChemistryUniversity of BristolCantock's CloseBristolBS8 1TSUK
| | - Phillip S. Grant
- School of ChemistryUniversity of BristolCantock's CloseBristolBS8 1TSUK
| | - Xiabing Li
- School of ChemistryUniversity of BristolCantock's CloseBristolBS8 1TSUK
| | - Adam Noble
- School of ChemistryUniversity of BristolCantock's CloseBristolBS8 1TSUK
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