1
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Zhuang D, Wu Y, Wang S, Tao Y, Liu P, Luo X, Wang T, Yan R. TFA-Mediated Synthesis of 1,2,4-Oxadiazoles from Carbamates and Nitriles. J Org Chem 2024; 89:7330-7338. [PMID: 38685200 DOI: 10.1021/acs.joc.4c00640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2024]
Abstract
An unprecedented protocol for the synthesis of 1,2,4-oxadiazoles from carbamates has been developed by employing nitriles as both substrates and solvents. This one-pot procedure achieves the formation of C═N bonds via TFA-mediated [3+2] annulation. A series of 1,2,4-oxadiazoles are synthesized in moderate to good yields.
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Affiliation(s)
- Daijiao Zhuang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, Gansu, China
| | - Yuankun Wu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, Gansu, China
| | - Shuairan Wang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, Gansu, China
| | - Yuelin Tao
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, Gansu, China
| | - Peihua Liu
- Research Institute of Oil and Gas Technology of Changqing Oilfield Company, Xian 710018, Shanxi, China
| | - Xiaofeng Luo
- Chengdu Guibao Science and Technology Company, Ltd., Chengdu 610041, Sichuan, China
| | - Tianqiang Wang
- Chengdu Guibao Science and Technology Company, Ltd., Chengdu 610041, Sichuan, China
| | - Rulong Yan
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, Gansu, China
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2
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Kumar R, Dohi T, Zhdankin VV. Organohypervalent heterocycles. Chem Soc Rev 2024; 53:4786-4827. [PMID: 38545658 DOI: 10.1039/d2cs01055k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/08/2024]
Abstract
This review summarizes the structural and synthetic aspects of heterocyclic molecules incorporating an atom of a hypervalent main-group element. The term "hypervalent" has been suggested for derivatives of main-group elements with more than eight valence electrons, and the concept of hypervalency is commonly used despite some criticism from theoretical chemists. The significantly higher thermal stability of hypervalent heterocycles compared to their acyclic analogs adds special features to their chemistry, particularly for bromine and iodine. Heterocyclic compounds of elements with double bonds are not categorized as hypervalent molecules owing to the zwitterionic nature of these bonds, resulting in the conventional 8-electron species. This review is focused on hypervalent heterocyclic derivatives of nonmetal main-group elements, such as boron, silicon, nitrogen, carbon, phosphorus, sulfur, selenium, bromine, chlorine, iodine(III) and iodine(V).
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Affiliation(s)
- Ravi Kumar
- Department of Chemistry, J C Bose University of Science and Technology, YMCA, NH-2, Sector-6, Mathura Road, Faridabad, 121006, Haryana, India.
| | - Toshifumi Dohi
- Graduate School of Pharmaceutical Sciences, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga, 525-8577, Japan.
| | - Viktor V Zhdankin
- Department of Chemistry and Biochemistry, 1038 University Drive, 126 HCAMS University of Minnesota Duluth, Duluth, Minnesota 55812, USA.
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3
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Tzeli D, Gerontitis IE, Petsalakis ID, Tsoungas PG, Varvounis G. Self Cycloaddition of o-Naphthoquinone Nitrosomethide to (±) Spiro{naphthalene(naphthopyranofurazan)}-one Oxide: An Insight into its Formation. Chempluschem 2022; 87:e202200313. [PMID: 36479609 DOI: 10.1002/cplu.202200313] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Revised: 11/22/2022] [Indexed: 11/25/2022]
Abstract
2-Hydroxy-1-naphthaldehyde oxime was oxidized by AgO (or Ag2O), in presence of N-methyl morpholine N-oxide (NMMO), to the title spiro adduct-dimer (±)-Spiro{naphthalene-1(2H),4'-(naphtho[2',1':2,3]pyrano[4,5-c]furazan)}-2-one-11'-oxide by a Diels-Alder(D-A) type self-cycloaddition, through the agency of an o-naphthoquinone nitrosomethide (o-NQM). Moreover, 2-hydroxy-8-methoxy-1-naphthaldehyde oxime was prepared and subjected to the same oxidation conditions. Its sterically guided result, 9-methoxynaphtho[1,2-d]isoxazole, was isolated, instead of the expected spiro adduct. The peri intramolecular H bonding in the oxime is considered to have a key contribution to the outcome. Geometry and energy features of the oxidant- and stereo-guided selectivity of both oxidation outcomes have been explored by DFT, perturbation theory and coupled cluster calculations. The reaction free energy of the D-A intermolecular cycloaddition is calculated at -82.0 kcal/mol, indicating its predominance over the intramolecular cyclization of ca. -37.6 kcal/mol. The cycloaddition is facilitated by NMMO through dipolar interactions and hydrogen bonding with both metal complexes and o-NQM. The 8(peri)-OMe substitution of the reactant oxime sterically impedes formation of the spiro adduct, instead it undergoes a more facile cyclodehydration to the isoxazole structure by ca. 4.9 kcal/mol.
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Affiliation(s)
- Demeter Tzeli
- Laboratory of Physical Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis Zografou Athens, 157 84, Athens, Greece
- Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Ave., Athens, 116 35, Greece
| | - Ioannis E Gerontitis
- Section of Organic Chemistry and Biochemistry, Department of Chemistry, University of Ioannina, 451 10, Ioannina, Greece
| | - Ioannis D Petsalakis
- Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Ave., Athens, 116 35, Greece
| | - Petros G Tsoungas
- Department of Biochemistry, Hellenic Pasteur Institute, 127 Vas. Sofias Ave., 115 21, Athens, Greece
| | - George Varvounis
- Section of Organic Chemistry and Biochemistry, Department of Chemistry, University of Ioannina, 451 10, Ioannina, Greece
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4
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Singh FV, Shetgaonkar SE, Krishnan M, Wirth T. Progress in organocatalysis with hypervalent iodine catalysts. Chem Soc Rev 2022; 51:8102-8139. [PMID: 36063409 DOI: 10.1039/d2cs00206j] [Citation(s) in RCA: 36] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Hypervalent iodine compounds as environmentally friendly and relatively inexpensive reagents have properties similar to transition metals. They are employed as alternatives to transition metal catalysts in organic synthesis as mild, nontoxic, selective and recyclable catalytic reagents. Formation of C-N, C-O, C-S, C-F and C-C bonds can be seamlessly accomplished by hypervalent iodine catalysed oxidative functionalisations. The aim of this review is to highlight recent developments in the utilisation of iodine(III) and iodine(V) catalysts in the synthesis of a wide range of organic compounds including chiral catalysts for stereoselective synthesis. Polymer-, magnetic nanoparticle- and metal organic framework-supported hypervalent iodine catalysts are also described.
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Affiliation(s)
- Fateh V Singh
- Chemistry Department, SAS, Vellore Institute of Technology - Chennai, Vandalur-Kelambakkam Road, Chennai-600127, Tamil Nadu, India.
| | - Samata E Shetgaonkar
- Chemistry Department, SAS, Vellore Institute of Technology - Chennai, Vandalur-Kelambakkam Road, Chennai-600127, Tamil Nadu, India.
| | - Manjula Krishnan
- Chemistry Department, SAS, Vellore Institute of Technology - Chennai, Vandalur-Kelambakkam Road, Chennai-600127, Tamil Nadu, India.
| | - Thomas Wirth
- School of Chemistry, Cardiff University, Cardiff, UK.
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5
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Efficient Catalytic Synthesis of Condensed Isoxazole Derivatives via Intramolecular Oxidative Cycloaddition of Aldoximes. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27123860. [PMID: 35744982 PMCID: PMC9229713 DOI: 10.3390/molecules27123860] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 06/13/2022] [Accepted: 06/14/2022] [Indexed: 01/28/2023]
Abstract
The intramolecular oxidative cycloaddition reaction of alkyne- or alkene-tethered aldoximes was catalyzed efficiently by hypervalent iodine(III) species to afford the corresponding polycyclic isoxazole derivatives in up to a 94% yield. The structure of the prepared products was confirmed by various methods, including X-ray crystallography. Mechanistic study demonstrated the crucial role of hydroxy(aryl)iodonium tosylate as a precatalyst, which is generated from 2-iodobenzoic acid and m-chloroperoxybenzoic acid in the presence of a catalytic amount of p-toluenesulfonic acid.
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6
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Oxadiazol-based mTOR inhibitors with potent antiproliferative activities: synthetic and computational modeling. Mol Divers 2022; 26:3357-3364. [PMID: 34985718 DOI: 10.1007/s11030-021-10367-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Accepted: 12/13/2021] [Indexed: 12/12/2022]
Abstract
Series of N-aryl-1,3,4-oxadiazole-2-amines and 3-aryl-1,2,4-oxadiazole-5-carboxamides derivatives were synthesized as novel chemotherapeutic agents. Synthesized compounds were evaluated for their anticancer activities against several cancer cell lines. Many analogues of 1,3,4-oxadiazole scaffold showed potent antiproliferative activities against breast cancer cell lines, with higher activities toward the metastatic breast cancer cell line (MDA-MB-231). Active analogues were profiled using in-house pharmacophore database in search for molecular target. Active analogues (2j and 2k) were found to fit the pharmacophoric map of ATP-competitive inhibitors of mTOR. The mTOR inhibitory activities of the most active compounds were confirmed with IC50 values in nanomolar range. The N-aryl-1,3,4-oxadiazole-2-amines linked to a basic head is a novel ATP-competitive inhibitors of mTOR with potential activities for treatment of different types of cancer.
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7
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Yusubov MS, Zhdankin VV. Zefirov's reagent and related hypervalent iodine triflates. MENDELEEV COMMUNICATIONS 2021. [DOI: 10.1016/j.mencom.2021.05.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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8
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Yusubov MS, Zhdankin VV. Zefirov's reagent and related hypervalent iodine triflates. MENDELEEV COMMUNICATIONS 2021. [DOI: 10.1016/j.mencom.2021.04.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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9
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China H, Kageyama N, Yatabe H, Takenaga N, Dohi T. Practical Synthesis of 2-Iodosobenzoic Acid (IBA) without Contamination by Hazardous 2-Iodoxybenzoic Acid (IBX) under Mild Conditions. Molecules 2021; 26:1897. [PMID: 33801611 PMCID: PMC8036297 DOI: 10.3390/molecules26071897] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Revised: 03/16/2021] [Accepted: 03/24/2021] [Indexed: 11/18/2022] Open
Abstract
We report a convenient and practical method for the preparation of nonexplosive cyclic hypervalent iodine(III) oxidants as efficient organocatalysts and reagents for various reactions using Oxone® in aqueous solution under mild conditions at room temperature. The thus obtained 2-iodosobenzoic acids (IBAs) could be used as precursors of other cyclic organoiodine(III) derivatives by the solvolytic derivatization of the hydroxy group under mild conditions of 80 °C or lower temperature. These sequential procedures are highly reliable to selectively afford cyclic hypervalent iodine compounds in excellent yields without contamination by hazardous pentavalent iodine(III) compound.
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Affiliation(s)
- Hideyasu China
- Department of Medical Bioscience, Nagahama Institute of Bio-Science and Technology, 1266, Tamuracho Nagahama-shi, Shiga 526-0829, Japan
- College of Pharmaceutical Sciences, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga 525-8577, Japan; (N.K.); (H.Y.)
| | - Nami Kageyama
- College of Pharmaceutical Sciences, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga 525-8577, Japan; (N.K.); (H.Y.)
| | - Hotaka Yatabe
- College of Pharmaceutical Sciences, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga 525-8577, Japan; (N.K.); (H.Y.)
| | - Naoko Takenaga
- Faculty of Pharmacy, Meijo University, 150 Yagotoyama, Tempaku-ku, Nagoya 468-8503, Japan;
| | - Toshifumi Dohi
- College of Pharmaceutical Sciences, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga 525-8577, Japan; (N.K.); (H.Y.)
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10
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Pajkert R, Koroniak H, Kafarski P, Röschenthaler GV. Hypervalent-iodine mediated one-pot synthesis of isoxazolines and isoxazoles bearing a difluoromethyl phosphonate moiety. Org Biomol Chem 2021; 19:4871-4876. [PMID: 34002761 DOI: 10.1039/d1ob00685a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A one-pot, regioselective 1,3-dipolar cycloaddition of in situ generated (diethoxyphosphoryl)difluoromethyl nitrile oxide toward selected alkenes and alkynes is reported. This protocol enables facile access to 3,5-disubstituted isoxazolines and isoxazoles bearing a CF2P(O)(OEt)2 moiety in good to excellent yields, under mild reaction conditions.
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Affiliation(s)
- Romana Pajkert
- Department of Life Sciences and Chemistry, Jacobs University Bremen gGmbH, Campus Ring 1, P.O. Box 750 561, D-28759 Bremen, Germany.
| | - Henryk Koroniak
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, 61-614 Poznań, Poland
| | - Paweł Kafarski
- Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
| | - Gerd-Volker Röschenthaler
- Department of Life Sciences and Chemistry, Jacobs University Bremen gGmbH, Campus Ring 1, P.O. Box 750 561, D-28759 Bremen, Germany.
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11
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Yoshimura A, Huss CD, Saito A, Kitamura T, Zhdankin VV. 2-Iodosylbenzoic acid activated by trifluoromethanesulfonic anhydride: efficient oxidant and electrophilic reagent for preparation of iodonium salts. NEW J CHEM 2021. [DOI: 10.1039/d1nj03787k] [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
2-Iodosylbenzoic acid in the presence of trifluoromethanesulfonic anhydride is an efficient oxidant and electrophilic reagent useful for preparation of the corresponding alkenyl and aryliodonium salts.
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Affiliation(s)
- Akira Yoshimura
- The Tomsk Polytechnic University, 634050 Tomsk, Russia
- Department of Chemistry and Biochemistry, University of Minnesota Duluth, MN 55812, USA
| | - Christopher D. Huss
- Department of Chemistry and Biochemistry, University of Minnesota Duluth, MN 55812, USA
| | - Akio Saito
- Division of Applied Chemistry, Institute of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei, Tokyo 184-8588, Japan
| | - Tsugio Kitamura
- Department of Chemistry and Applied Chemistry, Saga University, Honjo-machi, Saga 840-8502, Japan
| | - Viktor V. Zhdankin
- Department of Chemistry and Biochemistry, University of Minnesota Duluth, MN 55812, USA
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12
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Bian Q, Wu C, Yuan J, Shi Z, Ding T, Huang Y, Xu H, Xu Y. Iron Nitrate-Mediated Selective Synthesis of 3-Acyl-1,2,4-oxadiazoles from Alkynes and Nitriles: The Dual Roles of Iron Nitrate. J Org Chem 2020; 85:4058-4066. [PMID: 31994881 DOI: 10.1021/acs.joc.9b03070] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A direct strategy for the selective synthesis of 3-acyl-1,2,4-oxadiazoles from alkynes and nitriles has been developed under iron(III) nitrate-mediated conditions. The mechanism includes three sequential procedures: iron(III) nitrate-mediated nitration of alkynes leads to α-nitroketones, dehydration of α-nitroketones provides the nitrile oxides, and 1,3-dipolar cycloaddition of nitrile oxides with nitriles produces 3-acyl-1,2,4-oxadiazoles under iron-mediated conditions. Iron(III) nitrate plays dual roles in the nitration of alkynes and the activation of nitriles, while the formation of pyrimidine/isoxazole byproducts can be efficiently inhibited.
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Affiliation(s)
- Qilong Bian
- Institute of Functional Organic Molecular Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China
| | - Cunluo Wu
- Institute of Functional Organic Molecular Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China
| | - Jiangpei Yuan
- Institute of Functional Organic Molecular Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China
| | - Zuodong Shi
- Institute of Functional Organic Molecular Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China
| | - Tao Ding
- Institute of Functional Organic Molecular Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China
| | - Yongwei Huang
- College of Basic Medical Science, Henan University, Kaifeng 475004, China
| | - Hao Xu
- Institute of Functional Organic Molecular Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China
| | - Yuanqing Xu
- Institute of Functional Organic Molecular Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China
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13
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M L CR, Nawaz Khan FR, Saravanan V. Facile synthesis of N-1,2,4-oxadiazole substituted sulfoximines from N-cyano sulfoximines. Org Biomol Chem 2019; 17:9187-9199. [PMID: 31595935 DOI: 10.1039/c9ob01931f] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A divergent approach has been successfully developed for the synthesis of N-1,2,4-oxadiazole substituted sulfoximines starting from N-cyano sulfoximines. This method has a wide degree of substrate scope that includes aryl, heteroaryl, alkyl, fluoroalkyl and saturated heterocyclic compounds. Excellent functional group tolerability was also observed. Extension of this methodology to nucleosides, amino acids and dipeptides was found to be successful. A gram scale reaction was also established. The major part of this method is metal free and the utility of environmentally friendly solvents such as 2-methyl THF and ionic liquids is an added advantage.
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Affiliation(s)
- Chenna Reddy M L
- Medicinal Chemistry, Jubilant Biosys Ltd, #96, Industrial, Suburb, 2nd Stage, Yeshwanthpur, Bangalore, 560022, India.
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14
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Yoshimura A, Jarvi ME, Shea MT, Makitalo CL, Rohde GT, Yusubov MS, Saito A, Zhdankin VV. Hypervalent Iodine(III) Reagent Mediated Regioselective Cycloaddition of Aldoximes with Enaminones. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901258] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Akira Yoshimura
- Research School of Chemistry and Applied Biomedical Sciences The Tomsk Polytechnic University 634050 Tomsk Russia
- Department of Chemistry and Biochemistry University of Minnesota Duluth 55812 Duluth Minnesota USA
| | - Melissa E. Jarvi
- Department of Chemistry and Biochemistry University of Minnesota Duluth 55812 Duluth Minnesota USA
| | - Michael T. Shea
- Department of Chemistry and Biochemistry University of Minnesota Duluth 55812 Duluth Minnesota USA
| | - Cody L. Makitalo
- Department of Chemistry and Biochemistry University of Minnesota Duluth 55812 Duluth Minnesota USA
| | | | - Mekhman S. Yusubov
- Research School of Chemistry and Applied Biomedical Sciences The Tomsk Polytechnic University 634050 Tomsk Russia
| | - Akio Saito
- Division of Applied Chemistry Institute of Engineering Tokyo University of Agriculture and Technology 2‐23‐16 Naka‐cho 184‐8588 Koganei Tokyo Japan
| | - Viktor V. Zhdankin
- Department of Chemistry and Biochemistry University of Minnesota Duluth 55812 Duluth Minnesota USA
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15
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Waheed M, Ahmed N, Alsharif MA, Alahmdi MI, Mukhtar S. PhI(OAc)2
-Mediated One-Pot Synthesis and their Antibacterial Activity of Flavone and Coumarin Based Isoxazoles Under Mild Reaction Conditions. ChemistrySelect 2019. [DOI: 10.1002/slct.201803927] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Mohd Waheed
- Department of Chemistry; Indian Institute of Technology Roorkee; Roorkee- 247 667 Uttrakhand India
| | - Naseem Ahmed
- Department of Chemistry; Indian Institute of Technology Roorkee; Roorkee- 247 667 Uttrakhand India
| | - Meshari A Alsharif
- Department of Chemistry; Faculty of Science; University of Tabuk; Tabuk- 71491 Saudi Arabia
| | - Mohammed Issa Alahmdi
- Department of Chemistry; Faculty of Science; University of Tabuk; Tabuk- 71491 Saudi Arabia
| | - Sayeed Mukhtar
- Department of Chemistry; Faculty of Science; University of Tabuk; Tabuk- 71491 Saudi Arabia
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16
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NBS-mediated practical cyclization of N-acyl amidines to 1,2,4-oxadiazoles via oxidative N‒O bond formation. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.07.036] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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17
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Dual Utility of Heterogeneous Catalyst ZSM-5 for C-C Cleavage Leading to Nitriles, and for the Synthesis of Hydrazides. ChemistrySelect 2018. [DOI: 10.1002/slct.201800690] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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18
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Yoshimura A, Nguyen KC, Rohde GT, Postnikov PS, Yusubov MS, Zhdankin VV. Hypervalent Iodine Reagent Mediated Oxidative Heterocyclization of Aldoximes with Heterocyclic Alkenes. J Org Chem 2017; 82:11742-11751. [DOI: 10.1021/acs.joc.7b01462] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Akira Yoshimura
- Department
of Chemistry, Southern Methodist University, Dallas, Texas 75275, United States
- The Tomsk Polytechnic University, 634050 Tomsk, Russia
| | - Khiem C. Nguyen
- Department
of Chemistry and Biochemistry, University of Minnesota Duluth, Duluth, Minnesota 55812, United States
| | | | | | | | - Viktor V. Zhdankin
- Department
of Chemistry and Biochemistry, University of Minnesota Duluth, Duluth, Minnesota 55812, United States
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19
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Yagyu T, Takemoto Y, Yoshimura A, Zhdankin VV, Saito A. Iodine(III)-Catalyzed Formal [2 + 2 + 1] Cycloaddition Reaction for Metal-Free Construction of Oxazoles. Org Lett 2017; 19:2506-2509. [DOI: 10.1021/acs.orglett.7b00742] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Takuma Yagyu
- Division
of Applied Chemistry, Institute of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei, Tokyo 184-8588, Japan, and
| | - Yusuke Takemoto
- Division
of Applied Chemistry, Institute of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei, Tokyo 184-8588, Japan, and
| | - Akira Yoshimura
- Department
of Chemistry and Biochemistry, University of Minnesota, Duluth, Minnesota 55812 United States
| | - Viktor V. Zhdankin
- Department
of Chemistry and Biochemistry, University of Minnesota, Duluth, Minnesota 55812 United States
| | - Akio Saito
- Division
of Applied Chemistry, Institute of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei, Tokyo 184-8588, Japan, and
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20
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Deruer E, Canesi S. One-step formation of dihydrofuranoindoline cores promoted by a hypervalent iodine reagent. Org Biomol Chem 2017; 15:3736-3741. [DOI: 10.1039/c7ob00326a] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Treatment of aniline derivatives in the presence of a hypervalent iodine reagent and furan produces dihydrofuranoindoline cores in one step.
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Affiliation(s)
- Elsa Deruer
- Laboratoire de Méthodologie et Synthèse de Produits Naturels
- Université du Québec à Montréal
- Montréal
- Canada
| | - Sylvain Canesi
- Laboratoire de Méthodologie et Synthèse de Produits Naturels
- Université du Québec à Montréal
- Montréal
- Canada
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