1
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Chhikara A, Kaur N, Wolke EB, Boes EA, Nguyen AM, Ariyarathna JP, Baskaran P, Villa CE, Pham AH, Kremenets VJ, Kutcher SR, Truong JT, Li W. Olefin Difunctionalization for the Synthesis of Tetrahydroisoquinoline, Morpholine, Piperazine, and Azepane. Org Lett 2024; 26:84-88. [PMID: 38171009 DOI: 10.1021/acs.orglett.3c03690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2024]
Abstract
This report outlines a versatile strategy for synthesizing a diverse array of N-heterocycles. By the utilization of common olefins, this simple protocol facilitates their coupling with various bifunctional reagents. Furthermore, it can be integrated with C-H amination techniques to directly produce N-heterocycles in a multicomponent cascade coupling process. The unique bond disconnection logic employed in this process underscores its efficiency in achieving rapid simplification through cascade couplings.
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Affiliation(s)
- Akanksha Chhikara
- Department of Chemistry and Biochemistry, School of Green Chemistry and Engineering, The University of Toledo, 2801 West Bancroft Street, Toledo, Ohio 43606, United States
| | - Navdeep Kaur
- Department of Chemistry and Biochemistry, School of Green Chemistry and Engineering, The University of Toledo, 2801 West Bancroft Street, Toledo, Ohio 43606, United States
| | - Ernest B Wolke
- Department of Chemistry and Biochemistry, School of Green Chemistry and Engineering, The University of Toledo, 2801 West Bancroft Street, Toledo, Ohio 43606, United States
| | - Emily A Boes
- Department of Chemistry and Biochemistry, School of Green Chemistry and Engineering, The University of Toledo, 2801 West Bancroft Street, Toledo, Ohio 43606, United States
| | - Alex M Nguyen
- Department of Chemistry and Biochemistry, School of Green Chemistry and Engineering, The University of Toledo, 2801 West Bancroft Street, Toledo, Ohio 43606, United States
| | - Jeewani P Ariyarathna
- Department of Chemistry and Biochemistry, School of Green Chemistry and Engineering, The University of Toledo, 2801 West Bancroft Street, Toledo, Ohio 43606, United States
| | - Prabagar Baskaran
- Department of Chemistry and Biochemistry, School of Green Chemistry and Engineering, The University of Toledo, 2801 West Bancroft Street, Toledo, Ohio 43606, United States
| | - Chloe E Villa
- Department of Chemistry and Biochemistry, School of Green Chemistry and Engineering, The University of Toledo, 2801 West Bancroft Street, Toledo, Ohio 43606, United States
| | - Anthony H Pham
- Department of Chemistry and Biochemistry, School of Green Chemistry and Engineering, The University of Toledo, 2801 West Bancroft Street, Toledo, Ohio 43606, United States
| | - Victoria J Kremenets
- Department of Chemistry and Biochemistry, School of Green Chemistry and Engineering, The University of Toledo, 2801 West Bancroft Street, Toledo, Ohio 43606, United States
| | - Sydney R Kutcher
- Department of Chemistry and Biochemistry, School of Green Chemistry and Engineering, The University of Toledo, 2801 West Bancroft Street, Toledo, Ohio 43606, United States
| | - Jonathon T Truong
- Department of Chemistry and Biochemistry, School of Green Chemistry and Engineering, The University of Toledo, 2801 West Bancroft Street, Toledo, Ohio 43606, United States
| | - Wei Li
- Department of Chemistry and Biochemistry, School of Green Chemistry and Engineering, The University of Toledo, 2801 West Bancroft Street, Toledo, Ohio 43606, United States
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2
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Synthetic utility of styrenes in the construction of diverse heterocycles via annulation/cycloaddition. Tetrahedron 2023. [DOI: 10.1016/j.tet.2023.133270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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3
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Ray S, Singh S, Kumar G, Shukla G, SINGH MAYA. Reagent‐Controlled Chemodivergent Approach to Thiazolines and Thiazines from α‐N‐Hydroxyimino Dithioesters. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
| | | | - Ganesh Kumar
- Banaras Hindu University Faculty of Science INDIA
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4
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Zhao XJ, Li Y, Li M, Tian YL, Wang WP, Zhang BS, Wang XC. Visible light-promoted intermolecular cyclization/aromatization of chalcones and 2-mercaptobenzimidazoles via an EDA complex and a mechanism study. Org Biomol Chem 2022; 20:5139-5144. [PMID: 35707997 DOI: 10.1039/d2ob00847e] [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
Visible-light-promoted cyclization and aromatization of chalcones with 2-mercaptobenzimidazoles have been successfully developed to obtain diverse imidazo[2,1-b]thiazoles, and C-S and C-N bonds were constructed in one step. The reaction uses oxygen in the air as an oxidant, and the method does not need an external photocatalyst or a transition metal catalyst. The strategy features mild conditions, a simple system, readily accessible feedstocks, and a friendly environment. UV absorption spectroscopy and control experiments have shown that the reaction mechanism involves the formation of an electron-donor-acceptor (EDA) complex from thiolate anions and chalcones. In order to verify the mechanism, we studied the structure and HOMO/LUMO of the EDA complex by density functional theory (DFT) calculations. The results show that the π-π stacking between chalcones and 2-mercaptobenzimidazoles will cause a red shift of the UV absorption wavelength in the presence of Cs2CO3, and also provide a theoretical basis for the electron transfer of EDA complexes.
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Affiliation(s)
- Xue-Jun Zhao
- Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu, 730070, China.
| | - Yuke Li
- Department of Chemistry and Centre for Scientific Modeling and Computation, Chinese University of Hong Kong, Shatin, Hong Kong, China.
| | - Ming Li
- Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu, 730070, China.
| | - Ya-Ling Tian
- Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu, 730070, China.
| | - Wen-Peng Wang
- Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu, 730070, China.
| | - Bo-Sheng Zhang
- Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu, 730070, China.
| | - Xi-Cun Wang
- Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu, 730070, China.
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5
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Ariyarathna JP, Alom NE, Roberts LP, Kaur N, Wu F, Li W. Lewis Acid-Catalyzed Halonium Generation for Morpholine Synthesis and Claisen Rearrangement. J Org Chem 2022; 87:2947-2958. [PMID: 35142512 DOI: 10.1021/acs.joc.1c02804] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We disclose here practical strategies toward the synthesis of morpholines and Claisen rearrangement products based on the divergent reactivity of a common halonium intermediate. These reactions employ widely available alkenes in a Lewis acid-catalyzed halo-etherification process that can then transform them into the desired products with exceptional regioselectivity for both activated and unactivated olefins. Our mechanistic probe reveals an interesting regiochemical kinetic resolution process.
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Affiliation(s)
- Jeewani P Ariyarathna
- Department of Chemistry and Biochemistry, School of Green Chemistry and Engineering, The University of Toledo, 2801 West Bancroft Street, Toledo, Ohio 43606, United States
| | - Nur-E Alom
- Department of Chemistry and Biochemistry, School of Green Chemistry and Engineering, The University of Toledo, 2801 West Bancroft Street, Toledo, Ohio 43606, United States
| | - Leo P Roberts
- Department of Chemistry and Biochemistry, School of Green Chemistry and Engineering, The University of Toledo, 2801 West Bancroft Street, Toledo, Ohio 43606, United States
| | - Navdeep Kaur
- Department of Chemistry and Biochemistry, School of Green Chemistry and Engineering, The University of Toledo, 2801 West Bancroft Street, Toledo, Ohio 43606, United States
| | - Fan Wu
- Department of Chemistry and Biochemistry, School of Green Chemistry and Engineering, The University of Toledo, 2801 West Bancroft Street, Toledo, Ohio 43606, United States
| | - Wei Li
- Department of Chemistry and Biochemistry, School of Green Chemistry and Engineering, The University of Toledo, 2801 West Bancroft Street, Toledo, Ohio 43606, United States
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6
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Chemistry of Spontaneous Alkylation of Methimazole with 1,2-Dichloroethane. Molecules 2021; 26:molecules26227032. [PMID: 34834123 PMCID: PMC8625577 DOI: 10.3390/molecules26227032] [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: 10/11/2021] [Revised: 11/02/2021] [Accepted: 11/17/2021] [Indexed: 11/17/2022] Open
Abstract
Spontaneous S-alkylation of methimazole (1) with 1,2-dichloroethane (DCE) into 1,2-bis[(1-methyl-1H-imidazole-2-yl)thio]ethane (2), that we have described recently, opened the question about its formation pathway(s). Results of the synthetic, NMR spectroscopic, crystallographic and computational studies suggest that, under given conditions, 2 is obtained by direct attack of 1 on the chloroethyl derivative 2-[(chloroethyl)thio]-1-methyl-1H-imidazole (3), rather than through the isolated stable thiiranium ion isomer, i.e., 7-methyl-2H, 3H, 7H-imidazo[2,1-b]thiazol-4-ium chloride (4a, orthorhombic, space group Pnma), or in analogy with similar reactions, through postulated, but unproven intermediate thiiranium ion 5. Furthermore, in the reaction with 1, 4a prefers isomerization to the N-chloroethyl derivative, 1-chloroethyl-2,3-dihydro-3-methyl-1H-imidazole-2-thione (7), rather than alkylation to 2, while 7 further reacts with 1 to form 3-methyl-1-[(1-methyl-imidazole-2-yl)thioethyl]-1H-imidazole-2-thione (8, monoclinic, space group P 21/c). Additionally, during the isomerization of 3, the postulated intermediate thiiranium ion 5 was not detected by chromatographic and spectroscopic methods, nor by trapping with AgBF4. However, trapping resulted in the formation of the silver complex of compound 3, i.e., bis-{2-[(chloroethyl)thio]-1-methyl-1H-imidazole}-silver(I)tetrafluoroborate (6, monoclinic, space group P 21/c), which cyclized upon heating at 80 °C to 7-methyl-2H, 3H, 7H-imidazo[2,1-b]thiazol-4-ium tetrafluoroborate (4b, monoclinic, space group P 21/c). Finally, we observed thermal isomerization of both 2 and 2,3-dihydro-3-methyl-1-[(1-methyl-1H-imidazole-2-yl)thioethyl]-1H-imidazole-2-thione (8), into 1,2-bis(2,3-dihydro-3-methyl-1H-imidazole-2-thione-1-yl)ethane (9), which confirmed their structures.
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7
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Abstract
Multiheteroatom-containing small-sized cyclic molecules such as 2-
iminothiazolidines are often found to possess beneficial pharmacological properties. In this
review article, the biological significance of 2-iminothiazolidines is discussed and the literature
reports published in the last 15 years spanning from 2006 to 2020 describing various
preparative routes to access 2-iminothiazolidine derivatives have been categorically and
chronologically described. The notable synthetic methods discussed here involve ringexpansion
transformations of nonactivated and activated aziridines, thiiranes, epoxides, and
other miscellaneous reactions.
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Affiliation(s)
- Aditya Bhattacharyya
- Department of Chemistry, Indian Institute of Technology Kanpur, 208016, Kanpur, Uttar Pradesh, India
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8
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Zhao J, Xiao Q, Chen J, Xu J. Metal‐Free Synthesis of Imidazo[2,1‐
b
]thiazoles from Thioimidazoles and Ketones Mediated by Selectfluor. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000815] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Jinwu Zhao
- School of Pharmacy Guangdong Medical University No.1 Xincheng Blvd, Songshan Lake National High‐tech Industrial Development Zone 523808 Dongguan China
- Key Laboratory of Big Data Mining and Precision Drug Design Guangdong Medical University No.1 Xincheng Blvd, Songshan Lake National High‐tech Industrial Development Zone 523808 Dongguan China
| | - Qiannan Xiao
- School of Pharmacy Guangdong Medical University No.1 Xincheng Blvd, Songshan Lake National High‐tech Industrial Development Zone 523808 Dongguan China
- Key Laboratory of Big Data Mining and Precision Drug Design Guangdong Medical University No.1 Xincheng Blvd, Songshan Lake National High‐tech Industrial Development Zone 523808 Dongguan China
| | - Jiaxi Chen
- School of Pharmacy Guangdong Medical University No.1 Xincheng Blvd, Songshan Lake National High‐tech Industrial Development Zone 523808 Dongguan China
| | - Jingxiu Xu
- School of Pharmacy Guangdong Medical University No.1 Xincheng Blvd, Songshan Lake National High‐tech Industrial Development Zone 523808 Dongguan China
- Key Laboratory of Big Data Mining and Precision Drug Design Guangdong Medical University No.1 Xincheng Blvd, Songshan Lake National High‐tech Industrial Development Zone 523808 Dongguan China
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9
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Wu F, Ariyarathna JP, Kaur N, Alom NE, Kennell ML, Bassiouni OH, Li W. Halogen-Bond-Induced Consecutive Csp3–H Aminations via Hydrogen Atom Transfer Relay Strategy. Org Lett 2020; 22:2135-2140. [PMID: 32109065 DOI: 10.1021/acs.orglett.0c00081] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Fan Wu
- Department of Chemistry and Biochemistry, School of Green Chemistry and Engineering, The University of Toledo, 2801 West Bancroft Street, Toledo, Ohio 43606, United States
| | - Jeewani P. Ariyarathna
- Department of Chemistry and Biochemistry, School of Green Chemistry and Engineering, The University of Toledo, 2801 West Bancroft Street, Toledo, Ohio 43606, United States
| | - Navdeep Kaur
- Department of Chemistry and Biochemistry, School of Green Chemistry and Engineering, The University of Toledo, 2801 West Bancroft Street, Toledo, Ohio 43606, United States
| | - Nur-E Alom
- Department of Chemistry and Biochemistry, School of Green Chemistry and Engineering, The University of Toledo, 2801 West Bancroft Street, Toledo, Ohio 43606, United States
| | - Maureen L. Kennell
- Department of Chemistry and Biochemistry, School of Green Chemistry and Engineering, The University of Toledo, 2801 West Bancroft Street, Toledo, Ohio 43606, United States
| | - Omar H. Bassiouni
- Department of Chemistry and Biochemistry, School of Green Chemistry and Engineering, The University of Toledo, 2801 West Bancroft Street, Toledo, Ohio 43606, United States
| | - Wei Li
- Department of Chemistry and Biochemistry, School of Green Chemistry and Engineering, The University of Toledo, 2801 West Bancroft Street, Toledo, Ohio 43606, United States
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10
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Wu F, Ariyarathna JP, Alom NE, Kaur N, Li W. Oxyamination of Unactivated Alkenes with Electron-Rich Amines and Acids via a Catalytic Triiodide Intermediate. Org Lett 2020; 22:884-890. [PMID: 31927966 DOI: 10.1021/acs.orglett.9b04432] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
An aerobic catalytic oxidation process is described for the olefin oxyamination using acids and primary amines as the sources of O and N. Our mechanistic findings point to the formation of triiodide as a critical catalytic intermediate to account for the tolerance of electron-rich nucleophiles. This dual iodide and copper catalytic system is suitable for a formal [5+1] annulation process to access valuable lactam structures and highlighted by the synthesis of the pharmaceutical Zamifenacin.
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Affiliation(s)
- Fan Wu
- Department of Chemistry and Biochemistry, School of Green Chemistry and Engineering , The University of Toledo , 2801 West Bancroft Street , Toledo , Ohio 43606 , United States
| | - Jeewani P Ariyarathna
- Department of Chemistry and Biochemistry, School of Green Chemistry and Engineering , The University of Toledo , 2801 West Bancroft Street , Toledo , Ohio 43606 , United States
| | - Nur-E Alom
- Department of Chemistry and Biochemistry, School of Green Chemistry and Engineering , The University of Toledo , 2801 West Bancroft Street , Toledo , Ohio 43606 , United States
| | - Navdeep Kaur
- Department of Chemistry and Biochemistry, School of Green Chemistry and Engineering , The University of Toledo , 2801 West Bancroft Street , Toledo , Ohio 43606 , United States
| | - Wei Li
- Department of Chemistry and Biochemistry, School of Green Chemistry and Engineering , The University of Toledo , 2801 West Bancroft Street , Toledo , Ohio 43606 , United States
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11
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Zheng LC, Li L, Duan L, Li YM. FeBr3-catalyzed regioselective intramolecular sulfenoamination of unactivated terminal olefins. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.130619] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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12
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Wu F, Alom N, Ariyarathna JP, Naß J, Li W. Regioselective Formal [3+2] Cycloadditions of Urea Substrates with Activated and Unactivated Olefins for Intermolecular Olefin Aminooxygenation. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201904662] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Fan Wu
- Department of Chemistry and Biochemistry and School of Green Chemistry and Engineering The University of Toledo Toledo OH 43606 USA
| | - Nur‐E Alom
- Department of Chemistry and Biochemistry and School of Green Chemistry and Engineering The University of Toledo Toledo OH 43606 USA
| | - Jeewani P. Ariyarathna
- Department of Chemistry and Biochemistry and School of Green Chemistry and Engineering The University of Toledo Toledo OH 43606 USA
| | - Johannes Naß
- Department of Chemistry and Biochemistry and School of Green Chemistry and Engineering The University of Toledo Toledo OH 43606 USA
| | - Wei Li
- Department of Chemistry and Biochemistry and School of Green Chemistry and Engineering The University of Toledo Toledo OH 43606 USA
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13
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Wu F, Alom N, Ariyarathna JP, Naß J, Li W. Regioselective Formal [3+2] Cycloadditions of Urea Substrates with Activated and Unactivated Olefins for Intermolecular Olefin Aminooxygenation. Angew Chem Int Ed Engl 2019; 58:11676-11680. [DOI: 10.1002/anie.201904662] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Revised: 05/21/2019] [Indexed: 11/08/2022]
Affiliation(s)
- Fan Wu
- Department of Chemistry and Biochemistry and School of Green Chemistry and Engineering The University of Toledo Toledo OH 43606 USA
| | - Nur‐E Alom
- Department of Chemistry and Biochemistry and School of Green Chemistry and Engineering The University of Toledo Toledo OH 43606 USA
| | - Jeewani P. Ariyarathna
- Department of Chemistry and Biochemistry and School of Green Chemistry and Engineering The University of Toledo Toledo OH 43606 USA
| | - Johannes Naß
- Department of Chemistry and Biochemistry and School of Green Chemistry and Engineering The University of Toledo Toledo OH 43606 USA
| | - Wei Li
- Department of Chemistry and Biochemistry and School of Green Chemistry and Engineering The University of Toledo Toledo OH 43606 USA
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14
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Alom NE, Kaur N, Wu F, Saluga SJ, Li W. Catalytic Regio- and Stereoselective Alkene Sulfenoamination for 1,4-Benzothiazine Synthesis. Chemistry 2019; 25:6902-6906. [PMID: 30913321 DOI: 10.1002/chem.201900549] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Indexed: 12/20/2022]
Abstract
An alkene sulfenoamination reaction with 2-aminothiophenol is developed using iodide catalysis. This reaction renders access to useful 1,4-benzothiazines with good functional group compatibility including both electron-donating and electron-withdrawing substituents. The reaction is proposed to proceed through an inversion of the polarity of the thiol functionality. Our mechanistic studies reveal that both thiiranium and thiyl radical pathways are plausible and that the disulfide reagent can also function as a viable substrate in this reaction.
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Affiliation(s)
- Nur-E Alom
- Department of Chemistry and Biochemistry and School of Green Chemistry and Engineering, The University of Toledo, Toledo, OH, 43606, USA
| | - Navdeep Kaur
- Department of Chemistry and Biochemistry and School of Green Chemistry and Engineering, The University of Toledo, Toledo, OH, 43606, USA
| | - Fan Wu
- Department of Chemistry and Biochemistry and School of Green Chemistry and Engineering, The University of Toledo, Toledo, OH, 43606, USA
| | - Shannon Jasmine Saluga
- Department of Chemistry and Biochemistry and School of Green Chemistry and Engineering, The University of Toledo, Toledo, OH, 43606, USA
| | - Wei Li
- Department of Chemistry and Biochemistry and School of Green Chemistry and Engineering, The University of Toledo, Toledo, OH, 43606, USA
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15
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Kaur N, Wu F, Alom NE, Ariyarathna JP, Saluga SJ, Li W. Intermolecular alkene difunctionalizations for the synthesis of saturated heterocycles. Org Biomol Chem 2019; 17:1643-1654. [PMID: 30452059 DOI: 10.1039/c8ob02443j] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Saturated heterocycles are important structural motifs in a range of pharmaceuticals and agrochemicals. As a result of their importance, syntheses of these molecules have been extensively investigated. Despite the progress in this area, the most adopted strategies are still often characterized with inefficiency or relying on functionalizations with specialized precursors and pre-existing cores. This review highlights a dynamic synthetic strategy for the direct synthesis of saturated heterocycles from intermolecular alkene difunctionalizations. These coupling processes are highly modular, and therefore, offer perhaps the most convenient means to prepare diverse heterocyclic structures in compound libraries for bioactivity evoluations.
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Affiliation(s)
- Navdeep Kaur
- Department of Chemistry and Biochemistry and School of Green Chemistry and Engineering, The University of Toledo, Toledo, Ohio 43606, USA.
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16
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Ariyarathna JP, Wu F, Colombo SK, Hillary CM, Li W. Aerobic Catalytic Features in Photoredox- and Copper-Catalyzed Iodolactonization Reactions. Org Lett 2018; 20:6462-6466. [PMID: 30277403 DOI: 10.1021/acs.orglett.8b02771] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Mechanistic evaluations and comparison of two important aerobic catalytic oxidation processes, aerobic copper catalysis and photoredox catalysis, are performed. Interesting and distinct catalytic behaviors were observed for a common reaction of iodolactonization of alkenoic acids. Namely, the aerobic copper catalysis requires the formation of a copper carboxylate, whereas the aerobic photoredox catalysis requires the addition of proton sources to proceed to completion. Furthermore, the iodolactone products obtained from these catalytic processes are extensively derivatized to a number of functionalized lactones, including aryl lactones generated from the nickel-catalyzed reductive coupling with aryl halides.
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Affiliation(s)
- Jeewani Poornima Ariyarathna
- Department of Chemistry and Biochemistry, School of Green Chemistry and Engineering , The University of Toledo , 2801 West Bancroft Street , Toledo , Ohio 43606 , United States
| | - Fan Wu
- Department of Chemistry and Biochemistry, School of Green Chemistry and Engineering , The University of Toledo , 2801 West Bancroft Street , Toledo , Ohio 43606 , United States
| | - Sara Katelyn Colombo
- Department of Chemistry and Biochemistry, School of Green Chemistry and Engineering , The University of Toledo , 2801 West Bancroft Street , Toledo , Ohio 43606 , United States
| | - Charleese Marisa Hillary
- Department of Chemistry and Biochemistry, School of Green Chemistry and Engineering , The University of Toledo , 2801 West Bancroft Street , Toledo , Ohio 43606 , United States
| | - Wei Li
- Department of Chemistry and Biochemistry, School of Green Chemistry and Engineering , The University of Toledo , 2801 West Bancroft Street , Toledo , Ohio 43606 , United States
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17
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Ni Y, Zuo H, Yu H, Wu Y, Zhong F. Synergistic Catalysis-Enabled Thia-Aza-Prins Cyclization with DMSO and Disulfides: Entry to Sulfenylated 1,3-Oxazinanes and Oxazolidines. Org Lett 2018; 20:5899-5904. [DOI: 10.1021/acs.orglett.8b02551] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Yang Ni
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan 430074, China
| | - Honghua Zuo
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan 430074, China
| | - Huaibin Yu
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan 430074, China
| | - Yuzhou Wu
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan 430074, China
| | - Fangrui Zhong
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan 430074, China
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18
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Ni Y, Zuo H, Li Y, Wu Y, Zhong F. Copper-Catalyzed Regioselective Intramolecular Electrophilic Sulfenoamination via Lewis Acid Activation of Disulfides under Aerobic Conditions. Org Lett 2018; 20:4350-4353. [DOI: 10.1021/acs.orglett.8b01803] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Yang Ni
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan 430074, China
| | - Honghua Zuo
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan 430074, China
| | - Yan Li
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan 430074, China
| | - Yuzhou Wu
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan 430074, China
| | - Fangrui Zhong
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan 430074, China
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Wu F, Stewart S, Ariyarathna JP, Li W. Aerobic Copper-Catalyzed Alkene Oxyamination for Amino Lactone Synthesis. ACS Catal 2018. [DOI: 10.1021/acscatal.7b04060] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Fan Wu
- Department of Chemistry and
Biochemistry, School of Green Chemistry and Engineering, The University of Toledo, 2801 West Bancroft Street, Toledo, Ohio 43606, United States
| | - Scott Stewart
- Department of Chemistry and
Biochemistry, School of Green Chemistry and Engineering, The University of Toledo, 2801 West Bancroft Street, Toledo, Ohio 43606, United States
| | - Jeewani Poornima Ariyarathna
- Department of Chemistry and
Biochemistry, School of Green Chemistry and Engineering, The University of Toledo, 2801 West Bancroft Street, Toledo, Ohio 43606, United States
| | - Wei Li
- Department of Chemistry and
Biochemistry, School of Green Chemistry and Engineering, The University of Toledo, 2801 West Bancroft Street, Toledo, Ohio 43606, United States
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