1
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Gorve DA, Fernandes RA. Oxone-Mediated Regioselective Oxy-iodination of 1-Aryl/Alkyl Butadienes Using TBAI. J Org Chem 2024. [PMID: 39178010 DOI: 10.1021/acs.joc.4c01439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/24/2024]
Abstract
A simple, mild, and environmentally benign regioselective oxy-iodination of 1-aryl/alkyl butadienes has been developed. While styrenes have been explored previously, this work on dienes has been highly regioselective and metal-free in oxy-iodination following Markovnikov's rule. The oxy-iodination products were obtained in good to excellent yields using various co-solvents (H2O, MeOH, EtOH, AcOH, etc.). In addition, the halohydrins have been useful building blocks in the synthesis of various functionalized keto iodides and azido alcohols.
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Affiliation(s)
- Dnyaneshwar A Gorve
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, Maharashtra, India
| | - Rodney A Fernandes
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, Maharashtra, India
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2
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Li GQ, Li ZQ, Jiang M, Zhang Z, Qian Y, Xiao WJ, Chen JR. Photoinduced Copper-Catalyzed Asymmetric Three-Component Radical 1,2-Azidooxygenation of 1,3-Dienes. Angew Chem Int Ed Engl 2024; 63:e202405560. [PMID: 38787342 DOI: 10.1002/anie.202405560] [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: 03/21/2024] [Revised: 05/22/2024] [Accepted: 05/24/2024] [Indexed: 05/25/2024]
Abstract
Radical-involved multicomponent difunctionalization of 1,3-dienes has recently emerged as a promising strategy for rapid synthesis of valuable allylic compounds in one-pot operation. However, the expansion of radical scope and enantiocontrol remain two major challenges. Herein, we describe an unprecedented photoinduced copper-catalyzed highly enantioselective three-component radical 1,2-azidooxygenation of 1,3-dienes with readily available azidobenziodazolone reagent and carboxylic acids. This mild protocol exhibits a broad substrate scope, high functional group tolerance, and exceptional control over chemo-, regio- and enantioselectivity, providing practical access to diverse valuable azidated chiral allylic esters. Mechanistic studies imply that the chiral copper complex is implicated as a bifunctional catalyst in both the photoredox catalyzed azidyl radical generation and enantioselective radical C-O cross-coupling.
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Affiliation(s)
- Guo-Qing Li
- Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan, Hubei, 430079, China
| | - Zi-Qing Li
- Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan, Hubei, 430079, China
| | - Min Jiang
- College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, 310036, China
| | - Zhihan Zhang
- Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan, Hubei, 430079, China
| | - Yu Qian
- Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan, Hubei, 430079, China
| | - Wen-Jing Xiao
- Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan, Hubei, 430079, China
- Wuhan Institute of Photochemistry and Technology, 7 North Bingang Road, Wuhan, Hubei, 430083, China
| | - Jia-Rong Chen
- Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan, Hubei, 430079, China
- Wuhan Institute of Photochemistry and Technology, 7 North Bingang Road, Wuhan, Hubei, 430083, China
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou, Jiangxi, 341000, China
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3
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Xia CX, Li Z, Ye R, Wu ZJ, Ren Y, Wang K, Meng LG. Photochemical Mn-Mediated Generation of Azide Radicals for Improvement of Alkene Hydroxyazidation. Org Lett 2024; 26:3530-3535. [PMID: 38656165 DOI: 10.1021/acs.orglett.4c00911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
State-of-the-art strategies for alkene-hydroxyazidation, which yield a mixture of β-azido alcohol and β-azido peroxide, must rely on phosphine reagents to improve the chemoselectivity. To overcome the above problems, we present a photochemical hydroxyazidation of alkenes via Mn-mediated ligand-to-metal charge transfer (LMCT) in O2, which activates N3- to •N3 and incorporates O2 to be used as an oxygen source in the hydroxyazidation products. Broad alkene range and step-economy chemistry for the hydroxyazidation transformation were also demonstrated.
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Affiliation(s)
- Chen-Xi Xia
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education, Department of Chemistry, Huaibei Normal University, Huaibei, Anhui 235000, China
| | - Ziyang Li
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education, Department of Chemistry, Huaibei Normal University, Huaibei, Anhui 235000, China
| | - Ruyi Ye
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education, Department of Chemistry, Huaibei Normal University, Huaibei, Anhui 235000, China
| | - Zhao-Juan Wu
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education, Department of Chemistry, Huaibei Normal University, Huaibei, Anhui 235000, China
| | - Yue Ren
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education, Department of Chemistry, Huaibei Normal University, Huaibei, Anhui 235000, China
| | - Kuai Wang
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education, Department of Chemistry, Huaibei Normal University, Huaibei, Anhui 235000, China
| | - Ling-Guo Meng
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education, Department of Chemistry, Huaibei Normal University, Huaibei, Anhui 235000, China
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4
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Huo T, Zhao X, Cheng Z, Wei J, Zhu M, Dou X, Jiao N. Late-stage modification of bioactive compounds: Improving druggability through efficient molecular editing. Acta Pharm Sin B 2024; 14:1030-1076. [PMID: 38487004 PMCID: PMC10935128 DOI: 10.1016/j.apsb.2023.11.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 10/14/2023] [Accepted: 11/13/2023] [Indexed: 03/17/2024] Open
Abstract
Synthetic chemistry plays an indispensable role in drug discovery, contributing to hit compounds identification, lead compounds optimization, candidate drugs preparation, and so on. As Nobel Prize laureate James Black emphasized, "the most fruitful basis for the discovery of a new drug is to start with an old drug"1. Late-stage modification or functionalization of drugs, natural products and bioactive compounds have garnered significant interest due to its ability to introduce diverse elements into bioactive compounds promptly. Such modifications alter the chemical space and physiochemical properties of these compounds, ultimately influencing their potency and druggability. To enrich a toolbox of chemical modification methods for drug discovery, this review focuses on the incorporation of halogen, oxygen, and nitrogen-the ubiquitous elements in pharmacophore components of the marketed drugs-through late-stage modification in recent two decades, and discusses the state and challenges faced in these fields. We also emphasize that increasing cooperation between chemists and pharmacists may be conducive to the rapid discovery of new activities of the functionalized molecules. Ultimately, we hope this review would serve as a valuable resource, facilitating the application of late-stage modification in the construction of novel molecules and inspiring innovative concepts for designing and building new drugs.
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Affiliation(s)
- Tongyu Huo
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Xinyi Zhao
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Zengrui Cheng
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Jialiang Wei
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
- Changping Laboratory, Beijing 102206, China
| | - Minghui Zhu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Xiaodong Dou
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Ning Jiao
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
- Changping Laboratory, Beijing 102206, China
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, East China Normal University, Shanghai 200062, China
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5
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Su S, Zhang Y, Liu P, Wink DJ, Lee D. Intramolecular Carboxyamidation of Alkyne-Tethered O-Acylhydroxamates through Formation of Fe(III)-Nitrenoids. Chemistry 2024; 30:e202303428. [PMID: 38050744 DOI: 10.1002/chem.202303428] [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: 10/17/2023] [Revised: 11/28/2023] [Accepted: 12/04/2023] [Indexed: 12/06/2023]
Abstract
We developed intramolecular carboxyamidations of alkyne-tethered O-acylhydroxamates followed by either thermally induced spontaneous or 4-(dimethylamino)pyridine-catalyzed O→O or O→N acyl group migration. Under iron-catalyzed conditions, the carboxyamidation products were generated in high yield from both Z-alkene and arene-tethered substrates. DFT calculations indicate that the iron-catalyzed carboxyamidation proceeds via a stepwise mechanism involving iron-imidyl radical cyclization followed by intramolecular acyloxy transfer from the iron center to the alkenyl radical center to furnish the cis-carboxyamidation product. Upon treatment with 4-(dimethylamino)pyridine, the Z-alkene-tethered carboxyamidation products underwent selective O→O acyl migration to generate 2-acyloxy-5-acyl pyrroles. Thermal O→N acyl migration occurs during carboxyamidation if the Z-alkene linker contains an alkyl or an aryl substituent at the β-position of the carbonyl group. On the other hand, the arene linker-containing compounds selectively undergo O→N acyl migration to generate N-acyl-3-acylisoindolinones, and the corresponding O→O acyl migration forming isoindole derivatives was not observed.
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Affiliation(s)
- Siyuan Su
- Department of Chemistry, University of Illinois Chicago, 845 W. Taylor St., Chicago, Illinois, 60607, USA
| | - Yu Zhang
- Department of Chemistry, University of Pittsburgh, 219 Parkman Avenue, Pittsburgh, PA, 15260, USA
| | - Peng Liu
- Department of Chemistry, University of Pittsburgh, 219 Parkman Avenue, Pittsburgh, PA, 15260, USA
| | - Donald J Wink
- Department of Chemistry, University of Illinois Chicago, 845 W. Taylor St., Chicago, Illinois, 60607, USA
| | - Daesung Lee
- Department of Chemistry, University of Illinois Chicago, 845 W. Taylor St., Chicago, Illinois, 60607, USA
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6
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Borrel J, Waser J. Azido-alkynylation of alkenes through radical-polar crossover. Chem Sci 2023; 14:9452-9460. [PMID: 37712015 PMCID: PMC10498506 DOI: 10.1039/d3sc03309k] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Accepted: 08/10/2023] [Indexed: 09/16/2023] Open
Abstract
We report an azido-alkynylation of alkenes allowing a straightforward access to homopropargylic azides by combining hypervalent iodine reagents and alkynyl-trifluoroborate salts. The design of a photocatalytic redox-neutral radical polar crossover process was key to develop this transformation. A variety of homopropargylic azides possessing electron-rich and -poor aryls, heterocycles or ether substituents could be accessed in 34-84% yield. The products are synthetically useful building blocks that could be easily transformed into pyrroles or bioactive amines.
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Affiliation(s)
- Julien Borrel
- Laboratory of Catalysis and Organic Synthesis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne EPFL SB ISIC LCSO, BCH 4306 1015 Lausanne Switzerland
| | - Jerome Waser
- Laboratory of Catalysis and Organic Synthesis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne EPFL SB ISIC LCSO, BCH 4306 1015 Lausanne Switzerland
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7
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Sheng W, Huang X, Cai J, Zheng Y, Wen Y, Song C, Li J. Electrochemical Oxidation Enables Regioselective 1,3-Hydroxyfunctionalization of Cyclopropanes. Org Lett 2023; 25:6178-6183. [PMID: 37584476 DOI: 10.1021/acs.orglett.3c02309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/17/2023]
Abstract
The direct construction of 1,3-hydroxyfunctionalized molecules is still a significant challenge, as they can currently be obtained through multiple synthetic steps. Herein, we report a general and efficient 1,3-hydroxyfunctionalization of arylcyclopropanes by electrochemical oxidation with a strategic choice of nucleophiles and H2O. 1,3-Amino alcohols, 1,3-alkynyl alcohols, 1,3-hydroxyesters, and 1,3-halo alcohols are achieved with high levels of chemo- and regio-selectivity, opening a new dimension for 1,3-difunctionalization reaction.
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Affiliation(s)
- Wei Sheng
- College of Chemistry and Chemical Engineering, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, China
| | - Xuejin Huang
- College of Chemistry and Chemical Engineering, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, China
| | - Jianhua Cai
- College of Chemistry and Chemical Engineering, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, China
| | - Ye Zheng
- College of Chemistry and Chemical Engineering, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, China
| | - Yuxi Wen
- College of Chemistry and Chemical Engineering, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, China
| | - Chunlan Song
- College of Chemistry and Chemical Engineering, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, China
| | - Jiakun Li
- College of Chemistry and Chemical Engineering, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, China
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8
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Homolya Á, Jedlóczki I, Kónya-Ábrahám A, Somsák L, Tóth M, Juhász L. Behaviour of some 1-C-acceptor-substituted glycals under azidohydroxylation conditions. Carbohydr Res 2023; 529:108825. [PMID: 37253301 DOI: 10.1016/j.carres.2023.108825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 04/19/2023] [Accepted: 04/20/2023] [Indexed: 06/01/2023]
Abstract
Azidohydroxylation of 1-carbamoyl, 1-methoxycarbonyl and 1-cyano substituted d-lyxo and d-arabino configured O-peracylated glycals was studied and the reaction conditions were optimized. Under these conditions (3 equiv. NaN3/2 equiv. PIFA/0.3 equiv. TEMPO/50 equiv. H2O/dry DCM/0 °C/Ar) the expected 3-azido-3-deoxy ulopyranosonic acid derivatives were isolated in good yield with α-d-galacto configuration exclusively from the reaction of the 1-carbamoyl and 1-methoxycarbonyl substituted d-lyxo configured O-peracetylated glycals, while the transformation of the 1-cyano derivative gave a 2,3-vicinal diazide in low yield. The 1-carbamoyl d-arabino configured O-perbenzoylated glycal gave a mixture of α-d-gluco and α-d-manno configured azidohydroxylated products with d-gluco preference. The analogous 1-methoxycarbonyl derivative gave an inseparable product mixture and no transformation was detected with the respective 1-cyano glycal.
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Affiliation(s)
- Ágnes Homolya
- Department of Organic Chemistry, University of Debrecen, PO Box 400, H-4002, Debrecen, Hungary; University of Debrecen, Doctoral School of Chemistry, PO Box 400, H-4002, Debrecen, Hungary
| | - Ivett Jedlóczki
- Department of Organic Chemistry, University of Debrecen, PO Box 400, H-4002, Debrecen, Hungary
| | - Anita Kónya-Ábrahám
- Department of Organic Chemistry, University of Debrecen, PO Box 400, H-4002, Debrecen, Hungary
| | - László Somsák
- Department of Organic Chemistry, University of Debrecen, PO Box 400, H-4002, Debrecen, Hungary
| | - Marietta Tóth
- Department of Organic Chemistry, University of Debrecen, PO Box 400, H-4002, Debrecen, Hungary
| | - László Juhász
- Department of Organic Chemistry, University of Debrecen, PO Box 400, H-4002, Debrecen, Hungary.
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9
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Wang M, Zhang C, Ci C, Jiang H, Dixneuf PH, Zhang M. Room Temperature Construction of Vicinal Amino Alcohols via Electroreductive Cross-Coupling of N-Heteroarenes and Carbonyls. J Am Chem Soc 2023; 145:10967-10973. [PMID: 37075201 DOI: 10.1021/jacs.3c02776] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/21/2023]
Abstract
Despite the widespread applications of α-hydroxyalkyl cyclic amines, direct and diverse access to such a class of unique vicinal amino alcohols still remains, to date, a challenge. Here, through a strategy of electroreductive α-hydroxyalkylation of inactive N-heteroarenes with ketones or electron-rich arylaldehydes, we describe a room temperature approach for the direct construction of α-hydroxyalkyl cyclic amines, which features a broad substrate scope, operational simplicity, high chemoselectivity, and no need for pressurized H2 gas and transition metal catalysts. The zinc ion generated from anode oxidation plays a crucial role in the activation of both reactants by decreasing their reduction potentials. The strategy of electroreduction in combination with substrate activation by Lewis acids in this work is anticipated to develop more useful transformations.
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Affiliation(s)
- Maorui Wang
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China
| | - Chengqian Zhang
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China
| | - Chenggang Ci
- Key Laboratory of Computational Catalytic Chemistry of Guizhou Province, Department of Chemistry and Chemical Engineering, Qiannan Normal University for Nationalities, Duyun 558000, China
| | - Huanfeng Jiang
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China
| | | | - Min Zhang
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China
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10
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Holst DE, Dorval C, Winter CK, Guzei IA, Wickens ZK. Regiospecific Alkene Aminofunctionalization via an Electrogenerated Dielectrophile. J Am Chem Soc 2023. [PMID: 37023348 DOI: 10.1021/jacs.3c01137] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/08/2023]
Abstract
Modular strategies to rapidly increase molecular complexity have proven immensely synthetically valuable. In principle, transformation of an alkene into a dielectrophile presents an opportunity to deliver two unique nucleophiles across an alkene. Unfortunately, the selectivity profiles of known dielectrophiles have largely precluded this deceptively simple synthetic approach. Herein, we demonstrate that dicationic adducts generated through electrolysis of alkenes and thianthrene possess a unique selectivity profile relative to more conventional dielectrophiles. Specifically, these species undergo a single and perfectly regioselective substitution reaction with phthalimide salts. This observation unlocks an appealing new platform for aminofunctionalization reactions. As an illustrative example, we implement this new reactivity paradigm to address a longstanding synthetic challenge: alkene diamination with two distinct nitrogen nucleophiles. Studies into the mechanism of this process reveal a key alkenyl thianthrenium salt intermediate that controls the exquisite regioselectivity of the process and highlight the importance of proton sources in controlling the reactivity of alkenyl sulfonium salt electrophiles.
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Affiliation(s)
- Dylan E Holst
- Department of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| | - Céline Dorval
- Department of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| | - Casey K Winter
- Department of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| | - Ilia A Guzei
- Department of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| | - Zachary K Wickens
- Department of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
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11
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Pal P, Goud GK, Sridhar B, Mainkar PS, Nayani K, Chandrasekhar S. Metal-free dearomative 2,3-difunctionalization of indoles via radical cascade. Tetrahedron Lett 2023. [DOI: 10.1016/j.tetlet.2023.154478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/08/2023]
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12
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Su S, Wu T, Xia Y, Wink DJ, Lee D. Cycloisomerization of Alkyne-Tethered N-Acyloxycarbamates to 2-(3H)Oxazolones through Nitrenoid-Mediated Carboxyamidation. Chemistry 2023; 29:e202203371. [PMID: 36628950 DOI: 10.1002/chem.202203371] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 01/09/2023] [Accepted: 01/10/2023] [Indexed: 01/12/2023]
Abstract
The cycloisomerization of alkyne-tethered N-benzoyloxycarbamates to 2-(3H)oxazolones is described. Two catalytic systems are tailored for intramolecular 5-exo-alkyne carboxyamidation and concomitant alkene isomerization. PtCl2 /CO (5 mol%, toluene, 100 °C) promotes both carboxyamidation and alkene isomerization but has a limited substrate scope. On the other hand, FeCl3 (5 mol%, CH3 CN, 100 °C) promotes carboxyamidation effectively but a cocatalyst is required for the exocyclic alkene isomerization. Thus, a two-step one-pot protocol has been developed for a broader reaction scope, which involves FeCl3 -catalyzed carboxyamidation and base-induced alkene isomerization. Crossover experiments suggest that these reactions proceed mainly through a mechanism involving acylnitrenoid intermediates rather than carbenoid intermediates.
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Affiliation(s)
- Siyuan Su
- Department of Chemistry, University of Illinois Chicago, 845 W. Taylor St., Chicago, Illinois, 60607, USA
| | - Tongtong Wu
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, Zhejiang Province, 325035, P. R. China
| | - Yuanzhi Xia
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, Zhejiang Province, 325035, P. R. China
| | - Donald J Wink
- Department of Chemistry, University of Illinois Chicago, 845 W. Taylor St., Chicago, Illinois, 60607, USA
| | - Daesung Lee
- Department of Chemistry, University of Illinois Chicago, 845 W. Taylor St., Chicago, Illinois, 60607, USA
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13
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Wang J, Lu H, He Y, Jing C, Wei H. Cobalt-Catalyzed Nitrogen Atom Insertion in Arylcycloalkenes. J Am Chem Soc 2022; 144:22433-22439. [PMID: 36449714 DOI: 10.1021/jacs.2c10570] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
Developing strategies enabling the modification of underlying molecular frameworks facilitates access to underexplored chemical spaces. Skeletal editing is an emerging technology for late-stage diversification of bioactive molecules. However, the current state of this knowledge remains undeveloped. This work describes a simple protocol that "inserts" a nitrogen atom into arylcycloalkenes to form the corresponding N-heterocycles. The use of an inexpensive cobalt catalyst under aqueous and open-air conditions makes this protocol very practical. Examples of late-stage modification of compounds of pharmaceutical interest and complex fused ring compounds further demonstrated the potentially broad applicability of this methodology.
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Affiliation(s)
- Juanjuan Wang
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710069, China
| | - Hong Lu
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710069, China
| | - Yi He
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710069, China
| | - Chunxiu Jing
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710069, China
| | - Hao Wei
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710069, China
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14
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Sun B, Zhuang X, Yin J, Zhang K, Zhao H, Jin C. Photoredox-Catalyzed Tandem Radical Cyclization/Hydroxylation for the Synthesis of 4-Hydroxyalkyl-3,3-difluoro-γ-lactams. J Org Chem 2022; 87:14177-14185. [PMID: 36173277 DOI: 10.1021/acs.joc.2c01710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The photoredox-catalyzed radical difluoroalkylation/cyclization/hydroxylation cascade reaction of various 2-bromo-2,2-difluoro-N-arylacetamides containing unactivated alkene moieties has been developed, providing green and efficient access to various 4-hydroxyalkyl-3,3-difluoro-γ-lactams. Control experiments confirmed a radical process, and inexpensive air acted as the sole hydroxy resource. In addition, the highlights of this protocol include good tolerance for a variety functional groups, lower photocatalyst loading, and ease of operation.
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Affiliation(s)
- Bin Sun
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, P. R. China
| | - Xiaohui Zhuang
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, P. R. China
| | - Jieli Yin
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, P. R. China
| | - Kesheng Zhang
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, P. R. China
| | - Haiyun Zhao
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, P. R. China
| | - Can Jin
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, P. R. China.,College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, P. R. China
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15
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Luo Y, Lv L, Li Z. Copper-Catalyzed Germyl-Azidation of Alkenes with Germanium Hydrides and Trimethylsilyl Azide. Org Lett 2022; 24:8052-8056. [DOI: 10.1021/acs.orglett.2c03302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yani Luo
- Key Laboratory of Advanced Light Conversion Materials and Biophotonics, Department of Chemistry, Renmin University of China, Beijing 100872, China
| | - Leiyang Lv
- Key Laboratory of Advanced Light Conversion Materials and Biophotonics, Department of Chemistry, Renmin University of China, Beijing 100872, China
| | - Zhiping Li
- Key Laboratory of Advanced Light Conversion Materials and Biophotonics, Department of Chemistry, Renmin University of China, Beijing 100872, China
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16
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Li X, Cheng Z, Liu J, Zhang Z, Song S, Jiao N. Selective desaturation of amides: a direct approach to enamides. Chem Sci 2022; 13:9056-9061. [PMID: 36091215 PMCID: PMC9365091 DOI: 10.1039/d2sc02210a] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Accepted: 06/30/2022] [Indexed: 12/18/2022] Open
Abstract
C(sp3)-H bond desaturation has been an attractive strategy in organic synthesis. Enamides are important structural fragments in pharmaceuticals and versatile synthons in organic synthesis. However, the dehydrogenation of amides usually occurs on the acyl side benefitting from enolate chemistry like the desaturation of ketones and esters. Herein, we demonstrate an Fe-assisted regioselective oxidative desaturation of amides, which provides an efficient approach to enamides and β-halogenated enamides.
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Affiliation(s)
- Xinwei Li
- State Key Laboratory of Natural and Biomimetic Drugs, Chemical Biology Center, School of Pharmaceutical Sciences, Peking University Xue Yuan Rd. 38 Beijing 100191 China
| | - Zengrui Cheng
- State Key Laboratory of Natural and Biomimetic Drugs, Chemical Biology Center, School of Pharmaceutical Sciences, Peking University Xue Yuan Rd. 38 Beijing 100191 China
| | - Jianzhong Liu
- State Key Laboratory of Natural and Biomimetic Drugs, Chemical Biology Center, School of Pharmaceutical Sciences, Peking University Xue Yuan Rd. 38 Beijing 100191 China
| | - Ziyao Zhang
- State Key Laboratory of Natural and Biomimetic Drugs, Chemical Biology Center, School of Pharmaceutical Sciences, Peking University Xue Yuan Rd. 38 Beijing 100191 China
| | - Song Song
- State Key Laboratory of Natural and Biomimetic Drugs, Chemical Biology Center, School of Pharmaceutical Sciences, Peking University Xue Yuan Rd. 38 Beijing 100191 China
| | - Ning Jiao
- State Key Laboratory of Natural and Biomimetic Drugs, Chemical Biology Center, School of Pharmaceutical Sciences, Peking University Xue Yuan Rd. 38 Beijing 100191 China
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, East China Normal University Shanghai 200062 China
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17
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Burg F, Rovis T. Rh(III)-catalyzed Intra- and Intermolecular 3,4-Difunctionalization of 1,3-Dienes via Rh(III)-π-allyl Amidation with 1,4,2-Dioxazolones. ACS Catal 2022; 12:9690-9697. [PMID: 37829170 PMCID: PMC10569259 DOI: 10.1021/acscatal.2c02537] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
We herein report a modular strategy, which enables Rh(III)-catalyzed diastereoselective 3,4-amino oxygenation and diamination of 1,3-dienes using different O- and N-nucleophiles in combination with readily available 3-substituted 1,4,2-dioxazolones (78 examples, 37-91% yield). Previous attempts to functionalize the internal double bond rested on the use of plain alcoholic solvents as nucleophilic coupling partners thus dramatically limiting the scope of this transformation. We have now identified hexafluoroisopropanol as a non-nucleophilic solvent which allows the use of diverse nucleophiles and greatly expands the scope, including an unprecedented amino hydroxylation to selectively install valuable, unprotected β-amino alcohols across 1,3-dienes. Moreover, various elaborate alcohols prove to be compatible providing unique access to complex organic molecules. Finally, this method is employed in a series of intramolecular reactions to deliver valuable nitrogen heterocycles as well as γ- and δ-lactones.
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Affiliation(s)
- Finn Burg
- Department of Chemistry, Columbia University, New York 10027, United States
| | - Tomislav Rovis
- Department of Chemistry, Columbia University, New York 10027, United States
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18
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1,2-Amino oxygenation of alkenes with hydrogen evolution reaction. Nat Commun 2022; 13:4430. [PMID: 35908027 PMCID: PMC9338937 DOI: 10.1038/s41467-022-32084-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Accepted: 07/14/2022] [Indexed: 11/20/2022] Open
Abstract
1,2-Amino oxygenation of alkenes has emerged as one of the most straightforward synthetic methods to produce β-amino alcohols, which are important organic building blocks. Thus, a practical synthetic strategy for 1,2-amino oxygenation is highly desirable. Here, we reported an electro-oxidative intermolecular 1,2-amino oxygenation of alkenes with hydrogen evolution, removing the requirement of extra-oxidant. Using commercial oxygen and nitrogen sources as starting materials, this method provides a cheap, scalable, and efficient route to a set of valuable β-amino alcohol derivatives. Moreover, the merit of this protocol has been exhibited by its broad substrate scope and good application in continuous-flow reactors. Furthermore, this method can be extended to other amino-functionalization of alkenes, thereby showing the potential to inspire advances in applications of electro-induced N-centered radicals (NCRs). 1,2-Aminoxygenation of alkenes without extra oxidant is a practical yet challenging way to prepare β-amino alcohols. Here, the authors report an electro-oxidative route achieving such a goal with H2 evolution, exhibiting broad scope and application potential.
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19
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Duan A, Yu Y, Wang F, Wang X, Wang D. Mechanism and Origin of Stereoselectivity of Ni-Catalyzed Cyclization/Carboxylation of Bromoalkynes with CO 2. J Org Chem 2022; 87:8342-8350. [PMID: 35500133 DOI: 10.1021/acs.joc.2c00161] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Bromoalkynes play important roles in coupling reactions because they can show obvious stereoselectivity to form E- and Z-isomers when substituents are different. However, the origin of the stereoselectivity in the bromoalkynes reaction is still unclear. Density functional theory (DFT) calculations were performed to provide an in-depth study of the reaction mechanism, clarifying the mechanistic details of the main reaction and the origin of the stereoselectivity. By comparing the syn-insertion mechanism of alkynes and the radical pathway, it is indicated that the electrostatic effect caused by the different charge distributions of the reactants is the main reason that Ni(I) species are more prone to syn-insertion of alkynes than Ni(II) species. In addition, the lower reaction energy barrier in the radical pathway suggests that it is more advantageous in terms of kinetics. The bond between Ni(I) species and alkenylation products has two directions to generate products of different configurations, which are the direct stereoselectivity-determining stages. The distortion/interaction analysis shows that the distortion energy mainly affects the product configuration, and the steric hindrance is the main factor controlling the stereoselectivity.
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Affiliation(s)
- Abing Duan
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China
| | - Yali Yu
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China
| | - Fengqin Wang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China
| | - Xueqiang Wang
- College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Dongbo Wang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China
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20
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Shee M, Singh NDP. Chemical versatility of azide radical: journey from a transient species to synthetic accessibility in organic transformations. Chem Soc Rev 2022; 51:2255-2312. [PMID: 35229836 DOI: 10.1039/d1cs00494h] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The generation of azide radical (N3˙) occurs from its precursors primarily via a single electron transfer (SET) process or homolytic cleavage by chemical methods or advanced photoredox/electrochemical methods. This in situ generated transient open-shell species has unique characteristic features that set its reactivity. In the past, the azide radical was widely used for various studies in radiation chemistry as a 1e- oxidant of biologically important molecules, but now it is being exploited for synthetic applications based on its addition and intermolecular hydrogen atom transfer (HAT) abilities. Due to the significant role of nitrogen-containing molecules in synthesis, drug discovery, biological, and material sciences, the direct addition onto unsaturated bonds for the simultaneous construction of C-N bond with other (C-X) bonds are indeed worth highlighting. Moreover, the ability to generate O- or C-centered radicals by N3˙ via electron transfer (ET) and intermolecular HAT processes is also well documented. The purpose of controlling the reactivity of this short-lived intermediate in organic transformations drives us to survey: (i) the history of azide radical and its structural properties (thermodynamic, spectroscopic, etc.), (ii) chemical reactivities and kinetics, (iii) methods to produce N3˙ from various precursors, (iv) several significant azide radical-mediated transformations in the field of functionalization with unsaturated bonds, C-H functionalization via HAT, tandem, and multicomponent reaction with a critical analysis of underlying mechanistic approaches and outcomes, (v) concept of taming the reactivity of azide radicals for potential opportunities, in this review.
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Affiliation(s)
- Maniklal Shee
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal, 721302, India.
| | - N D Pradeep Singh
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal, 721302, India.
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21
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Li CP, Song YP, Wang BG, Ji NY. Sulfurated and iodinated metabolites from the cold-seep fungus Cladosporium cladosporioides 8-1. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.153689] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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22
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Cauwenbergh R, Goyal V, Maiti R, Natte K, Das S. Challenges and recent advancements in the transformation of CO 2 into carboxylic acids: straightforward assembly with homogeneous 3d metals. Chem Soc Rev 2022; 51:9371-9423. [DOI: 10.1039/d1cs00921d] [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 carbon dioxide (CO2) into valuable organic carboxylic acids is essential for maintaining sustainability. In this review, such CO2 thermo-, photo- and electrochemical transformations under 3d-transition metal catalysis are described from 2017 until 2022.
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Affiliation(s)
- Robin Cauwenbergh
- Department of Chemistry, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerpen, Belgium
| | - Vishakha Goyal
- Chemical and Material Sciences Division, CSIR-Indian Institute of Petroleum, Dehradun-248005, India
- Academy of Scientific and Innovative Research (AcSIR), CSIR-HRDC Campus, Joggers Road, Kamla Nehru Nagar, Ghaziabad, Uttar Pradesh 201 002, India
| | - Rakesh Maiti
- Department of Chemistry, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerpen, Belgium
| | - Kishore Natte
- Department of Chemistry, Indian Institute of Technology, Hyderabad, Kandi, Sangareddy, 502 285, Telangana, India
| | - Shoubhik Das
- Department of Chemistry, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerpen, Belgium
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23
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Song X, Meng S, Zhang H, Jiang Y, Chan ASC, Zou Y. Dibrominated addition and substitution of alkenes catalyzed by Mn 2(CO) 10. Chem Commun (Camb) 2021; 57:13385-13388. [PMID: 34823257 DOI: 10.1039/d1cc04534b] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A practical method for the dibromination of alkenes without using molecular bromine is consistently appealing in organic synthesis. Herein, we report Mn-catalyzed dibrominated addition and substitution of alkenes only with N-bromosuccinimide, producing a variety of synthetically valuable dibrominated compounds in moderate to high yields.
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Affiliation(s)
- Xianheng Song
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China.
| | - Shanshui Meng
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China. .,Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery, Guangzhou 510006, China
| | - Hong Zhang
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China.
| | - Yi Jiang
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China.
| | - Albert S C Chan
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China. .,Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery, Guangzhou 510006, China
| | - Yong Zou
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China. .,Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery, Guangzhou 510006, China
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24
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Patel M, Desai B, Sheth A, Dholakiya BZ, Naveen T. Recent Advances in Mono‐ and Difunctionalization of Unactivated Olefins. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100666] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Monak Patel
- Department of Chemistry Sardar Vallabhbhai National Institute of Technology Gujarat–Surat 395 007 India
| | - Bhargav Desai
- Department of Chemistry Sardar Vallabhbhai National Institute of Technology Gujarat–Surat 395 007 India
| | - Aakash Sheth
- Department of Chemistry Sardar Vallabhbhai National Institute of Technology Gujarat–Surat 395 007 India
| | - Bharatkumar Z. Dholakiya
- Department of Chemistry Sardar Vallabhbhai National Institute of Technology Gujarat–Surat 395 007 India
| | - Togati Naveen
- Department of Chemistry Sardar Vallabhbhai National Institute of Technology Gujarat–Surat 395 007 India
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25
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Ye Z, Zhu R, Wang F, Jiang H, Zhang F. Electrochemical Difunctionalization of Styrenes via Chemoselective Oxo-Azidation or Oxo-Hydroxyphthalimidation. Org Lett 2021; 23:8240-8245. [PMID: 34697944 DOI: 10.1021/acs.orglett.1c02991] [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
Atom- and step-economic oxo-azidation and oxo-hydroxyphthalimidation of styrenes have been developed under mild electrolytic conditions, respectively. Various valuable alpha-azido or hydroxyphthalimide aromatic ketones were synthesized efficiently from readily available styrenes, azides, and N-hydroxyphthalimides. Mechanism studies show that two different pathways involved in these two transformations.
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Affiliation(s)
- Zenghui Ye
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, 310014, People's Republic of China
| | - Rongjin Zhu
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, 310014, People's Republic of China
| | - Feng Wang
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, 310014, People's Republic of China
| | - Haobin Jiang
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, 310014, People's Republic of China
| | - Fengzhi Zhang
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, 310014, People's Republic of China
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26
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Burg F, Rovis T. Diastereoselective Three-Component 3,4-Amino Oxygenation of 1,3-Dienes Catalyzed by a Cationic Heptamethylindenyl Rhodium(III) Complex. J Am Chem Soc 2021; 143:17964-17969. [PMID: 34668705 DOI: 10.1021/jacs.1c09276] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The direct oxyamination of olefins is a compelling tool to rapidly access β-amino alcohols-a privileged motif ubiquitous in natural products, pharmaceuticals and agrochemicals. Although a variety of expedient methods are established for simple alkenes, selective amino oxygenation of 1,3-dienes is less explored. Within this context, methods for the oxyamination of 1,3-dienes that are selective for the internal position remain unprecedented. We herein report a modular three-component approach to perform an internal and highly diastereoselective amino oxygenation of 1,3-dienes catalyzed by a cationic heptamethylindenyl (Ind*) Rh(III) complex.
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Affiliation(s)
- Finn Burg
- Department of Chemistry, Columbia University, New York, New York 10027, United States
| | - Tomislav Rovis
- Department of Chemistry, Columbia University, New York, New York 10027, United States
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27
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Gurawa A, Kumar M, Kashyap S. Selective Azidooxygenation of Alkenes Enabled by Photo-induced Radical Transfer Using Aryl-λ 3-azidoiodane Species. ACS OMEGA 2021; 6:26623-26639. [PMID: 34661016 PMCID: PMC8515593 DOI: 10.1021/acsomega.1c03991] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Accepted: 09/16/2021] [Indexed: 06/13/2023]
Abstract
The photolytic radical-induced vicinal azidooxygenation of synthetically important and diverse functionalized substrates including unactivated alkenes is reported. The photoredox-catalyst/additive-free protocol enables intermolecular oxyazidation by simultaneously incorporating two new functionalities; C-O and C-N across the C=C double bond in a selective manner. Mechanistic investigations reveal the intermediacy of the azidyl radical facilitated via the photolysis of λ3-azidoiodane species and cascade proceeding to generate an active carbon-centered radical. The late-stage transformations of azido- and oxy-moieties were amply highlighted by assembling high-value drug analogs and bioactive skeletons.
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28
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Zheng L, Wang Z, Li C, Wu Y, Liu Z, Ning Y. The azidosulfonylation of terminal alkynes leading to β-azidovinyl sulfones. Chem Commun (Camb) 2021; 57:9874-9877. [PMID: 34491258 DOI: 10.1039/d1cc04268h] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
We report herein the first example of the N3 radical-mediated azidosulfonylation of alkynes, affording the β-azidovinyl sulfone products with a broad substrate scope, excellent functional group compatibility, and high yield. DFT calculations suggest that the mechanism of the reaction proceeds through an unprecedented sequential N3 radical addition and sulfonyl radical coupling pathway.
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Affiliation(s)
- Long Zheng
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Department of Chemistry, Northeast Normal University, Changchun 130024, China.
| | - Zhanjing Wang
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Department of Chemistry, Northeast Normal University, Changchun 130024, China.
| | - Chen Li
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Department of Chemistry, Northeast Normal University, Changchun 130024, China.
| | - Yong Wu
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Department of Chemistry, Northeast Normal University, Changchun 130024, China.
| | - Zhaohong Liu
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Department of Chemistry, Northeast Normal University, Changchun 130024, China.
| | - Yongquan Ning
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Department of Chemistry, Northeast Normal University, Changchun 130024, China.
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29
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Chen F, Tang Y, Li X, Duan Y, Chen C, Zheng Y. Oxoammonium Salt‐Mediated Vicinal Oxyazidation of Alkenes with NaN
3
: Access to
β
‐Aminooxy Azides. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100783] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Fei Chen
- Henan Provincial Engineering and Technology Research Center for Precise Synthesis of Fluorine-Containing Drugs, College of Chemistry and Chemical Engineering Anyang Normal University Anyang 455000 People's Republic of China
| | - Yu‐Ting Tang
- Henan Provincial Engineering and Technology Research Center for Precise Synthesis of Fluorine-Containing Drugs, College of Chemistry and Chemical Engineering Anyang Normal University Anyang 455000 People's Republic of China
| | - Xin‐Ru Li
- Henan Provincial Engineering and Technology Research Center for Precise Synthesis of Fluorine-Containing Drugs, College of Chemistry and Chemical Engineering Anyang Normal University Anyang 455000 People's Republic of China
| | - Yan‐Yan Duan
- Henan Provincial Engineering and Technology Research Center for Precise Synthesis of Fluorine-Containing Drugs, College of Chemistry and Chemical Engineering Anyang Normal University Anyang 455000 People's Republic of China
| | - Chao‐Xing Chen
- Henan Provincial Engineering and Technology Research Center for Precise Synthesis of Fluorine-Containing Drugs, College of Chemistry and Chemical Engineering Anyang Normal University Anyang 455000 People's Republic of China
| | - Yang Zheng
- Henan Provincial Engineering and Technology Research Center for Precise Synthesis of Fluorine-Containing Drugs, College of Chemistry and Chemical Engineering Anyang Normal University Anyang 455000 People's Republic of China
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30
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Affiliation(s)
- Ya‐Feng Si
- School of Biology Zhengzhou University Zhengzhou 450001 People's Republic of China
- Green Catalysis Center, College of Chemistry Zhengzhou University Zhengzhou 450001 People's Republic of China
| | - Qi‐Yan Lv
- School of Biology Zhengzhou University Zhengzhou 450001 People's Republic of China
- Green Catalysis Center, College of Chemistry Zhengzhou University Zhengzhou 450001 People's Republic of China
| | - Bing Yu
- Green Catalysis Center, College of Chemistry Zhengzhou University Zhengzhou 450001 People's Republic of China
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31
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Chen Y, Wang J, Lu Y. Decarboxylative 1,4-carbocyanation of 1,3-enynes to access tetra-substituted allenes via copper/photoredox dual catalysis. Chem Sci 2021; 12:11316-11321. [PMID: 34667542 PMCID: PMC8447876 DOI: 10.1039/d1sc02896k] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Accepted: 07/20/2021] [Indexed: 12/13/2022] Open
Abstract
We disclose herein the first example of merging photoredox catalysis and copper catalysis for radical 1,4-carbocyanations of 1,3-enynes. Alkyl N-hydroxyphthalimide esters are utilized as radical precursors, and the reported mild and redox-neutral protocol has broad substrate scope and remarkable functional group tolerance. This strategy allows for the synthesis of diverse multi-substituted allenes with high chemo- and regio-selectivities, also permitting late stage allenylation of natural products and drug molecules.
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Affiliation(s)
- Ya Chen
- Department of Chemistry, National University of Singapore 3 Science Drive 3 Singapore 117543 Singapore
| | - Junjie Wang
- Department of Chemistry, National University of Singapore 3 Science Drive 3 Singapore 117543 Singapore .,Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University Binhai New City Fuzhou Fujian 350207 China
| | - Yixin Lu
- Department of Chemistry, National University of Singapore 3 Science Drive 3 Singapore 117543 Singapore .,Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University Binhai New City Fuzhou Fujian 350207 China
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32
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Wu JF, Wan NW, Li YN, Wang QP, Cui BD, Han WY, Chen YZ. Regiodivergent and stereoselective hydroxyazidation of alkenes by biocatalytic cascades. iScience 2021; 24:102883. [PMID: 34401667 PMCID: PMC8353479 DOI: 10.1016/j.isci.2021.102883] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 06/02/2021] [Accepted: 07/14/2021] [Indexed: 12/30/2022] Open
Abstract
Asymmetric functionalization of alkenes allows the direct synthesis of a wide range of chiral compounds. Vicinal hydroxyazidation of alkenes provides a desirable path to 1,2-azidoalcohols; however, existing methods are limited by the control of stereoselectivity and regioselectivity. Herein, we describe a dual-enzyme cascade strategy for regiodivergent and stereoselective hydroxyazidation of alkenes, affording various enantiomerically pure 1,2-azidoalcohols. The biocatalytic cascade process is designed by combining styrene monooxygenase-catalyzed asymmetric epoxidation of alkenes and halohydrin dehalogenase-catalyzed regioselective ring opening of epoxides with azide. Additionally, a one-pot chemo-enzymatic route to chiral β-hydroxytriazoles from alkenes is developed via combining the biocatalytic cascades and Cu-catalyzed azide-alkyne cycloaddition.
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Affiliation(s)
- Jing-Fei Wu
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, Generic Drug Research Center of Guizhou Province, Green Pharmaceuticals Engineering Research Center of Guizhou Province, School of Pharmacy, Zunyi Medical University, Zunyi, 563000, China
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, , Zunyi, 563000, China
| | - Nan-Wei Wan
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, Generic Drug Research Center of Guizhou Province, Green Pharmaceuticals Engineering Research Center of Guizhou Province, School of Pharmacy, Zunyi Medical University, Zunyi, 563000, China
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, , Zunyi, 563000, China
| | - Ying-Na Li
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, Generic Drug Research Center of Guizhou Province, Green Pharmaceuticals Engineering Research Center of Guizhou Province, School of Pharmacy, Zunyi Medical University, Zunyi, 563000, China
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, , Zunyi, 563000, China
| | - Qing-Ping Wang
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, Generic Drug Research Center of Guizhou Province, Green Pharmaceuticals Engineering Research Center of Guizhou Province, School of Pharmacy, Zunyi Medical University, Zunyi, 563000, China
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, , Zunyi, 563000, China
| | - Bao-Dong Cui
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, Generic Drug Research Center of Guizhou Province, Green Pharmaceuticals Engineering Research Center of Guizhou Province, School of Pharmacy, Zunyi Medical University, Zunyi, 563000, China
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, , Zunyi, 563000, China
| | - Wen-Yong Han
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, Generic Drug Research Center of Guizhou Province, Green Pharmaceuticals Engineering Research Center of Guizhou Province, School of Pharmacy, Zunyi Medical University, Zunyi, 563000, China
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, , Zunyi, 563000, China
| | - Yong-Zheng Chen
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, Generic Drug Research Center of Guizhou Province, Green Pharmaceuticals Engineering Research Center of Guizhou Province, School of Pharmacy, Zunyi Medical University, Zunyi, 563000, China
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, , Zunyi, 563000, China
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33
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Liu L, Li L, Wang X, Sun R, Zhou MD, Wang H. Mn(III)-Mediated Radical Cyclization of o-Alkenyl Aromatic Isocyanides with Boronic Acids: Access to N-Unprotected 2-Aryl-3-cyanoindoles. Org Lett 2021; 23:5826-5830. [PMID: 34323503 DOI: 10.1021/acs.orglett.1c01979] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The synthesis of N-unprotected 2-aryl-3-cyanoindoles was realized via the Mn(III)-mediated radical cascade cyclization of o-alkenyl aromatic isocyanides with boronic acids. A possible mechanism involving a sequential intermolecular radical addition, intramolecular cyclization, and cleavage of the C-C bond under mild reaction conditions is proposed. Mechanism studies show that H2O or O2 might provide the oxygen source for the elimination of benzaldehyde.
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Affiliation(s)
- Lu Liu
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, P. R. China
| | - Lei Li
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, P. R. China
| | - Xin Wang
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, P. R. China
| | - Ran Sun
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, P. R. China
| | - Ming-Dong Zhou
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, P. R. China
| | - He Wang
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, P. R. China
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34
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Martínez-Montero L, Tischler D, Süss P, Schallmey A, Franssen MCR, Hollmann F, Paul CE. Asymmetric azidohydroxylation of styrene derivatives mediated by a biomimetic styrene monooxygenase enzymatic cascade. Catal Sci Technol 2021; 11:5077-5085. [PMID: 34381590 PMCID: PMC8328376 DOI: 10.1039/d1cy00855b] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Accepted: 06/13/2021] [Indexed: 12/18/2022]
Abstract
Enantioenriched azido alcohols are precursors for valuable chiral aziridines and 1,2-amino alcohols, however their chiral substituted analogues are difficult to access. We established a cascade for the asymmetric azidohydroxylation of styrene derivatives leading to chiral substituted 1,2-azido alcohols via enzymatic asymmetric epoxidation, followed by regioselective azidolysis, affording the azido alcohols with up to two contiguous stereogenic centers. A newly isolated two-component flavoprotein styrene monooxygenase StyA proved to be highly selective for epoxidation with a nicotinamide coenzyme biomimetic as a practical reductant. Coupled with azide as a nucleophile for regioselective ring opening, this chemo-enzymatic cascade produced highly enantioenriched aromatic α-azido alcohols with up to >99% conversion. A bi-enzymatic counterpart with halohydrin dehalogenase-catalyzed azidolysis afforded the alternative β-azido alcohol isomers with up to 94% diastereomeric excess. We anticipate our biocatalytic cascade to be a starting point for more practical production of these chiral compounds with two-component flavoprotein monooxygenases.
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Affiliation(s)
- Lía Martínez-Montero
- Department of Biotechnology, Delft University of Technology Van der Maasweg 9 2629 HZ Delft The Netherlands
| | - Dirk Tischler
- Microbial Biotechnology, Ruhr-Universität Bochum Universitätsstr. 150 44780 Bochum Germany
| | - Philipp Süss
- Enzymicals AG Walther-Rathenau-Straße 49a 17489 Greifswald Germany
| | - Anett Schallmey
- Institute for Biochemistry, Biotechnology and Bioinformatics, Technische Universität Braunschweig Spielmannstraße 7 38106 Braunschweig Germany
| | - Maurice C R Franssen
- Laboratory of Organic Chemistry, Wageningen University Stippeneng 4 6708 WE Wageningen The Netherlands
| | - Frank Hollmann
- Department of Biotechnology, Delft University of Technology Van der Maasweg 9 2629 HZ Delft The Netherlands
| | - Caroline E Paul
- Department of Biotechnology, Delft University of Technology Van der Maasweg 9 2629 HZ Delft The Netherlands
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35
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Tang C, Qiu X, Cheng Z, Jiao N. Molecular oxygen-mediated oxygenation reactions involving radicals. Chem Soc Rev 2021; 50:8067-8101. [PMID: 34095935 DOI: 10.1039/d1cs00242b] [Citation(s) in RCA: 74] [Impact Index Per Article: 24.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Molecular oxygen as a green, non-toxic and inexpensive oxidant has displayed lots of advantages compared with other oxidants towards more selective, sustainable, and environmentally benign organic transformations. The oxygenation reactions which employ molecular oxygen or ambient air as both an oxidant and an oxygen source provide an efficient route to the synthesis of oxygen-containing compounds, and have been demonstrated in practical applications such as pharmaceutical synthesis and late-stage functionalization of complex molecules. This review article introduces the recent advances of radical processes in molecular oxygen-mediated oxygenation reactions. Reaction scopes, limitations and mechanisms are discussed based on reaction types and catalytic systems. Conclusions and perspectives are also given in the end.
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Affiliation(s)
- Conghui Tang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, 430074, China.
| | - Xu Qiu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China.
| | - Zengrui Cheng
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China.
| | - Ning Jiao
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China. and State Key Laboratory of Organometallic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
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36
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Qiao L, Zhang K, Wang Z, Li H, Lu P, Wang Y. Visible-Light-Induced Photocatalyst-Free Aerobic Hydroxyazidations of Indoles: A Highly Regioselective and Stereoselective Synthesis of trans-2-Azidoindolin-3-ols. J Org Chem 2021; 86:7955-7962. [PMID: 34061526 DOI: 10.1021/acs.joc.1c00186] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A visible-light-promoted aerobic hydroxyazidation of indole derivatives with TMSN3 is described. The reaction proceeded under photocatalyst-free conditions to furnish trans-2-azidoindolin-3-ols with high regioselectivity and stereoselectivity. The protocol is operationally simple, and the starting materials (e.g., 1-(pyrimidin-2-yl) indoles, azidotrimethylsilane, and air) are readily available. The proposed mechanism in which substrates act as photocatalysts upon excitation using blue light-emitting diodes (LEDs) was supported by experimental studies.
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Affiliation(s)
- Li Qiao
- Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
| | - Ke Zhang
- Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
| | - Zhichao Wang
- Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
| | - Hanjie Li
- Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
| | - Ping Lu
- Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
| | - Yanguang Wang
- Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
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37
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Lv D, Sun Q, Zhou H, Ge L, Qu Y, Li T, Ma X, Li Y, Bao H. Iron‐Catalyzed Radical Asymmetric Aminoazidation and Diazidation of Styrenes. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202017175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Daqi Lv
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology State Key Laboratory of Structural Chemistry Center for Excellence in Molecular Synthesis Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences 155 Yangqiao Road West Fuzhou Fujian 350002 P. R. China
| | - Qiao Sun
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology State Key Laboratory of Structural Chemistry Center for Excellence in Molecular Synthesis Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences 155 Yangqiao Road West Fuzhou Fujian 350002 P. R. China
| | - Huan Zhou
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology State Key Laboratory of Structural Chemistry Center for Excellence in Molecular Synthesis Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences 155 Yangqiao Road West Fuzhou Fujian 350002 P. R. China
| | - Liang Ge
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology State Key Laboratory of Structural Chemistry Center for Excellence in Molecular Synthesis Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences 155 Yangqiao Road West Fuzhou Fujian 350002 P. R. China
| | - Yanjie Qu
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology State Key Laboratory of Structural Chemistry Center for Excellence in Molecular Synthesis Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences 155 Yangqiao Road West Fuzhou Fujian 350002 P. R. China
| | - Taian Li
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology State Key Laboratory of Structural Chemistry Center for Excellence in Molecular Synthesis Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences 155 Yangqiao Road West Fuzhou Fujian 350002 P. R. China
| | - Xiaoxu Ma
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology State Key Laboratory of Structural Chemistry Center for Excellence in Molecular Synthesis Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences 155 Yangqiao Road West Fuzhou Fujian 350002 P. R. China
| | - Yajun Li
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology State Key Laboratory of Structural Chemistry Center for Excellence in Molecular Synthesis Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences 155 Yangqiao Road West Fuzhou Fujian 350002 P. R. China
| | - Hongli Bao
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology State Key Laboratory of Structural Chemistry Center for Excellence in Molecular Synthesis Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences 155 Yangqiao Road West Fuzhou Fujian 350002 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
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38
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Tu Y, Dong H, Wang H, Ao Y, Liu Y. Divergent functionalization of α,β-enones: catalyst-free access to β-azido ketones and β-amino α-diazo ketones. Chem Commun (Camb) 2021; 57:4524-4527. [PMID: 33956012 DOI: 10.1039/d1cc00985k] [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
A simple and practical method for the azidation of β-fluoroalkyl α,β-unsaturated ketones to access a wide variety of fluorinated nitrogenous carbonyl compounds is developed. Different from existing precedents, neither a metallic nor an organic catalyst was involved in our strategy. Judicious choice of solvents allows for the modulation of the reaction outcomes, delivering β-azido ketones or β-amino α-diazo ketones. The reaction system features environmental friendliness, mild conditions, simplicity and excellent functional group tolerance.
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Affiliation(s)
- Youshao Tu
- College of Chemistry and Life Science, Advanced Institute of Materials Science, Changchun University of Technology, 2055 N. Yan'an Avenue, Changchun 130012, P. R. China.
| | - Honglin Dong
- College of Chemistry and Life Science, Advanced Institute of Materials Science, Changchun University of Technology, 2055 N. Yan'an Avenue, Changchun 130012, P. R. China.
| | - Huamin Wang
- College of Chemistry and Chemical Engineering, University of South China, 28 N Changsheng West Road, Hengyang 421001, P. R. China.
| | - Yuhui Ao
- College of Chemistry and Life Science, Advanced Institute of Materials Science, Changchun University of Technology, 2055 N. Yan'an Avenue, Changchun 130012, P. R. China.
| | - Yu Liu
- College of Chemistry and Life Science, Advanced Institute of Materials Science, Changchun University of Technology, 2055 N. Yan'an Avenue, Changchun 130012, P. R. China.
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39
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Li J, Yuan Y, Bao X, Sang T, Yang J, Huo C. Visible-Light-Induced Intermolecular Oxyimination of Alkenes. Org Lett 2021; 23:3712-3717. [PMID: 33843240 DOI: 10.1021/acs.orglett.1c01064] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An intermolecular vicinal O-N difunctionalization reaction of olefins with oxime esters through energy transfer catalysis has been developed.
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Affiliation(s)
- Jun Li
- Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials; Key Laboratory of Eco-Environment-Related Polymer Materials Ministry of Education; College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, China
| | - Yong Yuan
- Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials; Key Laboratory of Eco-Environment-Related Polymer Materials Ministry of Education; College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, China
| | - Xiazhen Bao
- Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials; Key Laboratory of Eco-Environment-Related Polymer Materials Ministry of Education; College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, China
| | - Tongzhi Sang
- Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials; Key Laboratory of Eco-Environment-Related Polymer Materials Ministry of Education; College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, China
| | - Jie Yang
- Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials; Key Laboratory of Eco-Environment-Related Polymer Materials Ministry of Education; College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, China
| | - Congde Huo
- Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials; Key Laboratory of Eco-Environment-Related Polymer Materials Ministry of Education; College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, China
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40
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Zhang X, Zhang Q, Li L, Cao S, Liu Z, Zanoni G, Ning Y, Wu Y. Fluorocyclization of Allyl Alcohols and Amines to Access 3-Functionalized Oxetanes and Azetidines. Org Lett 2021; 23:3674-3679. [PMID: 33881893 DOI: 10.1021/acs.orglett.1c01062] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An efficient method to prepare 3-functionalized oxetanes and azetidines has been realized by fluorocyclization of readily available 2-azidoallyl/2-alkoxyallyl alcohols and amines. Notably, this is the first example applying the fluorocyclization strategy to construct four-membered heterocycles. The pendant electron-donating group (-N3 or -OR) plays a crucial role in polarizing the C═C double bond and facilitating the cyclization process, as verified by DFT and experimental studies.
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Affiliation(s)
- Xinyu Zhang
- Department of Chemistry Northeast Normal University, Changchun 130024, China
| | - Qi Zhang
- Department of Chemistry Northeast Normal University, Changchun 130024, China
| | - Linxuan Li
- Department of Chemistry Northeast Normal University, Changchun 130024, China
| | - Shanshan Cao
- Department of Chemistry Northeast Normal University, Changchun 130024, China
| | - Zhaohong Liu
- Department of Chemistry Northeast Normal University, Changchun 130024, China
| | - Giuseppe Zanoni
- Department of Chemistry, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy
| | - Yongquan Ning
- Department of Chemistry Northeast Normal University, Changchun 130024, China
| | - Yong Wu
- Department of Chemistry Northeast Normal University, Changchun 130024, China
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41
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Wei WT, Li Q, Zhang MZ, He WM. N-Radical enabled cyclization of 1,n-enynes. CHINESE JOURNAL OF CATALYSIS 2021. [DOI: 10.1016/s1872-2067(20)63702-0] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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42
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Lv D, Sun Q, Zhou H, Ge L, Qu Y, Li T, Ma X, Li Y, Bao H. Iron‐Catalyzed Radical Asymmetric Aminoazidation and Diazidation of Styrenes. Angew Chem Int Ed Engl 2021; 60:12455-12460. [PMID: 33749966 DOI: 10.1002/anie.202017175] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2020] [Indexed: 12/28/2022]
Affiliation(s)
- Daqi Lv
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology State Key Laboratory of Structural Chemistry Center for Excellence in Molecular Synthesis Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences 155 Yangqiao Road West Fuzhou Fujian 350002 P. R. China
| | - Qiao Sun
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology State Key Laboratory of Structural Chemistry Center for Excellence in Molecular Synthesis Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences 155 Yangqiao Road West Fuzhou Fujian 350002 P. R. China
| | - Huan Zhou
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology State Key Laboratory of Structural Chemistry Center for Excellence in Molecular Synthesis Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences 155 Yangqiao Road West Fuzhou Fujian 350002 P. R. China
| | - Liang Ge
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology State Key Laboratory of Structural Chemistry Center for Excellence in Molecular Synthesis Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences 155 Yangqiao Road West Fuzhou Fujian 350002 P. R. China
| | - Yanjie Qu
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology State Key Laboratory of Structural Chemistry Center for Excellence in Molecular Synthesis Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences 155 Yangqiao Road West Fuzhou Fujian 350002 P. R. China
| | - Taian Li
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology State Key Laboratory of Structural Chemistry Center for Excellence in Molecular Synthesis Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences 155 Yangqiao Road West Fuzhou Fujian 350002 P. R. China
| | - Xiaoxu Ma
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology State Key Laboratory of Structural Chemistry Center for Excellence in Molecular Synthesis Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences 155 Yangqiao Road West Fuzhou Fujian 350002 P. R. China
| | - Yajun Li
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology State Key Laboratory of Structural Chemistry Center for Excellence in Molecular Synthesis Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences 155 Yangqiao Road West Fuzhou Fujian 350002 P. R. China
| | - Hongli Bao
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology State Key Laboratory of Structural Chemistry Center for Excellence in Molecular Synthesis Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences 155 Yangqiao Road West Fuzhou Fujian 350002 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
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43
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Li C, Liao Y, Tan X, Liu X, Liu P, Lv WX, Wang H. Hypervalent iodine-mediated gem-difluorination of vinyl halides enabled by exclusive 1,2-halo migration. Sci China Chem 2021. [DOI: 10.1007/s11426-021-9965-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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44
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Zhang LW, Deng XJ, Zhang DX, Tian QQ, He W. Aminolactonization of Unactivated Alkenes Catalyzed by Aryl Iodine. J Org Chem 2021; 86:5152-5165. [PMID: 33760610 DOI: 10.1021/acs.joc.1c00074] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A one-step protocol of the aryl iodine-catalyzed aminolactonization of unactivated alkenes under oxidation conditions was first reported to efficiently construct diverse amino lactones in a short time using HNTs2 as the compatible nitrogen source. In addition, we investigated the influence of the reaction rate based on the structure of the iodoarene precatalyst, which revealed the selective adjustment effect on aminolactonization and oxylactonization. Finally, preliminary experiments verified the feasibility of asymmetric aminolactonization catalyzed by a chiral iodoarene precatalyst.
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Affiliation(s)
- Lu-Wen Zhang
- Department of Chemistry, School of Pharmacy, The Fourth Military Medical University, Xi'an, 710032, China
| | - Xiao-Jun Deng
- Department of Chemistry, School of Pharmacy, The Fourth Military Medical University, Xi'an, 710032, China
| | - Dong-Xu Zhang
- Department of Medicinal Chemistry, School of Pharmacy, The Fourth Military Medical University, Xi'an, 710032, China
| | - Qin-Qin Tian
- Department of Chemistry, School of Pharmacy, The Fourth Military Medical University, Xi'an, 710032, China
| | - Wei He
- Department of Chemistry, School of Pharmacy, The Fourth Military Medical University, Xi'an, 710032, China
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45
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Affiliation(s)
- Paramasivam Sivaguru
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Northeast Normal University, Changchun 130024, China
| | - Yongquan Ning
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Northeast Normal University, Changchun 130024, China
| | - Xihe Bi
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Northeast Normal University, Changchun 130024, China
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46
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Muriel B, Waser J. Azide Radical Initiated Ring Opening of Cyclopropenes Leading to Alkenyl Nitriles and Polycyclic Aromatic Compounds. Angew Chem Int Ed Engl 2021; 60:4075-4079. [PMID: 33205851 DOI: 10.1002/anie.202013516] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 11/04/2020] [Indexed: 01/05/2023]
Abstract
We report herein a radical-mediated amination of cyclopropenes. The transformation proceeds through a cleavage of the three-membered ring after the addition of an azide radical on the strained double bond and leads to tetrasubstituted alkenyl nitrile derivatives upon loss of N2 . With 1,2-diaryl substituted cyclopropenes, this methodology could be extended to a one-pot synthesis of highly functionalized polycyclic aromatic compounds (PACs). This transformation allows the synthesis of nitrile-substituted alkenes and aromatic compounds from rapidly accessed cyclopropenes using only commercially available reagents.
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Affiliation(s)
- Bastian Muriel
- Laboratory of Catalysis and Organic Synthesis, Ecole Polytechnique Fédérale de Lausanne, EPFL, SB ISIC LCSO, BCH 4306, 1015, Lausanne, Switzerland
| | - Jerome Waser
- Laboratory of Catalysis and Organic Synthesis, Ecole Polytechnique Fédérale de Lausanne, EPFL, SB ISIC LCSO, BCH 4306, 1015, Lausanne, Switzerland
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47
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Wata C, Hashimoto T. Organoiodine-Catalyzed Enantioselective Intermolecular Oxyamination of Alkenes. J Am Chem Soc 2021; 143:1745-1751. [PMID: 33482057 DOI: 10.1021/jacs.0c11440] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Metal-free, catalytic enantioselective intermolecular oxyamination of alkenes is realized by use of organoiodine(I/III) chemistry. The protocol is applicable toward aryl- and alkyl-substituted alkenes with high enantioselectivity and electronically controlled regioselectivity. The oxyaminated products can be easily deprotected in one step to reveal free amino alcohols in high yields without loss of enantioselectivity. A key to our success is the discovery of a virtually unexplored chemical entity, N-(fluorosulfonyl)carbamate, as a bifunctional N,O-nucleophile.
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Affiliation(s)
- Chisato Wata
- Chiba Iodine Resource Innovation Center and Department of Chemistry, Graduate School of Science, Chiba University, 1-33, Yayoi, Inage, Chiba 263-8522, Japan
| | - Takuya Hashimoto
- Chiba Iodine Resource Innovation Center and Department of Chemistry, Graduate School of Science, Chiba University, 1-33, Yayoi, Inage, Chiba 263-8522, Japan
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48
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Wang T, Zhou Y, Xu Y, Cheng GJ. Computational exploration of copper catalyzed vinylogous aerobic oxidation of unsaturated compounds. Sci Rep 2021; 11:1304. [PMID: 33446723 PMCID: PMC7809353 DOI: 10.1038/s41598-020-80188-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Accepted: 12/09/2020] [Indexed: 11/23/2022] Open
Abstract
Selective oxidation is one of the most important and challenging transformations in both academic research and chemical industry. Recently, a highly selective and efficient way to synthesize biologically active γ-hydroxy-α,β-unsaturated molecules from Cu-catalyzed vinylogous aerobic oxidation of α,β- and β,γ-unsaturated compounds has been developed. However, the detailed reaction mechanism remains elusive. Herein, we report a density functional theory study on this Cu-catalyzed vinylogous aerobic oxidation of γ,γ-disubstituted α,β- and β,γ-unsaturated isomers. Our computational study unveils detailed mechanism for each elementary step, i.e. deprotonation, O2 activation, and reduction. Besides, the origin of regioselectivity, divergent reactivities of substrates as well as reducing agents, and the byproduct generation have also been investigated. Notably, the copper catalyst retains the + 2 oxidation state through the whole catalytic cycle and plays essential roles in multiple steps. These findings would provide hints on mechanistic studies and future development of transition metal-catalyzed aerobic oxidation reactions.
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Affiliation(s)
- Ting Wang
- Warshel Institute for Computational Biology, Shenzhen Key Laboratory of Steroid Drug Development, School of Life and Health Sciences, The Chinese University of Hong Kong (Shenzhen), Shenzhen, 518172, China
| | - Yu Zhou
- Warshel Institute for Computational Biology, Shenzhen Key Laboratory of Steroid Drug Development, School of Life and Health Sciences, The Chinese University of Hong Kong (Shenzhen), Shenzhen, 518172, China
- School of Life Sciences, University of Science and Technology of China, Hefei, 230027, Anhui, China
| | - Yao Xu
- Warshel Institute for Computational Biology, Shenzhen Key Laboratory of Steroid Drug Development, School of Life and Health Sciences, The Chinese University of Hong Kong (Shenzhen), Shenzhen, 518172, China
- School of Life Sciences, University of Science and Technology of China, Hefei, 230027, Anhui, China
| | - Gui-Juan Cheng
- Warshel Institute for Computational Biology, Shenzhen Key Laboratory of Steroid Drug Development, School of Life and Health Sciences, The Chinese University of Hong Kong (Shenzhen), Shenzhen, 518172, China.
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Hemric BN. Beyond osmium: progress in 1,2-amino oxygenation of alkenes, 1,3-dienes, alkynes, and allenes. Org Biomol Chem 2021; 19:46-81. [PMID: 33174579 DOI: 10.1039/d0ob01938k] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Olefin 1,2-difunctionalization has emerged as a popular strategy within modern synthetic chemistry for the synthesis of vicinal amino alcohols and derivatives. The advantage of this approach is the single-step simplicity for rapid diversification, feedstock nature of the olefin starting materials, and the possible modularity of the components. Although there is a vast number of possible iterations of 1,2-olefin difunctionalization, 1,2-amino oxygenation is of particular interest due to the prevalence of both oxygen and nitrogen within pharmaceuticals, natural products, agrochemicals, and synthetic ligands. The Sharpless amino hydroxylation provided seminal results in this field and displayed the value in achieving methods of this nature. However, a vast number of new and novel methods have emerged in recent decades. This review provides a comprehensive review of modern advances in accomplishing 1,2-amino oxygenation of alkenes, 1,3-dienes, alkynes, and allenes that move beyond osmium to a range of other transition metals and more modern strategies such as electrochemical, photochemical, and biochemical reactivity.
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Affiliation(s)
- Brett N Hemric
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.
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Muriel B, Waser J. Azide Radical Initiated Ring Opening of Cyclopropenes Leading to Alkenyl Nitriles and Polycyclic Aromatic Compounds. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202013516] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Bastian Muriel
- Laboratory of Catalysis and Organic Synthesis Ecole Polytechnique Fédérale de Lausanne, EPFL, SB ISIC LCSO, BCH 4306 1015 Lausanne Switzerland
| | - Jerome Waser
- Laboratory of Catalysis and Organic Synthesis Ecole Polytechnique Fédérale de Lausanne, EPFL, SB ISIC LCSO, BCH 4306 1015 Lausanne Switzerland
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