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Diastereoselective Formation of Quaternary Stereocenters in Imidazole N-Oxide Cycloaddition with Fluoroalkenes. Catalysts 2022. [DOI: 10.3390/catal12020177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Imidazole N-oxides are attractive starting materials for the preparation of complex molecules containing an imidazole ring. Dipolar cycloaddition between 1,1-difluoroalkenes and imidazole N-oxides bearing a chiral auxiliary performed in the presence of oxygen or nitrogen nucleophiles was found to provide access to esters and amides bearing a 2-azaheteroaryl substituent at the α position of the imidazole ring as mixtures of diastereomers that, in most cases, are readily separable. This three-component reaction introduces a new tertiary or quaternary all-carbon stereocenter into the heterocyclic ring at a position originally occupied by hydrogen. Importantly, products containing a trifluoromethyl group attached to this stereocenter are readily available as well.
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Gilmour R, Martín-Heras V, Daniliuc CG. An I(I)/I(III) Catalysis Route to the Heptafluoroisopropyl Group: A Privileged Module in Contemporary Agrochemistry. SYNTHESIS-STUTTGART 2021. [DOI: 10.1055/a-1485-4916] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
AbstractThe heptafluoroisopropyl group is emerging as a privileged chemotype in contemporary agrochemistry and features prominently in the current portfolio of leading insecticides. To reconcile the expansive potential of this module with the synthetic challenges associated with preparing crowded, fluorinated motifs, I(I)/I(III) catalysis has been leveraged. Predicated on in situ generation of p-TolIF2, this route enables the direct difluorination of α-trifluoromethyl-β-difluorostyrenes in a single operation. This formal addition of fluorine across the alkene π-bond is efficient (up to 91% yield) and is compatible with a broad range of functional groups. The ArCF(CF3)2 moiety is conformationally preorganised, with the C(sp3)–F bond coplanar to the framework of the aryl ring, thereby minimising 1,3-allylic strain. Moreover, orthogonal multipolar C–F···C=O interactions have been identified in a phthalimide derivative. It is envisaged that this programmed vicinal difluorination enabled by a hypervalent iodine species will find application in functional molecule design in a broader sense.
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Kutasevich AV, Niktarov AS, Uvarova ES, Karnoukhova VA, Mityanov VS. A novel approach to bis(1,3-azol-2-yl)acetonitriles and bis(1,3-azol-2-yl)methanes via the [3 + 2]-dipolar cycloaddition of imidazole N-oxides and 2-heteroaryl-3,3-dimethylacrylonitriles. Org Biomol Chem 2021; 19:8988-8998. [PMID: 34596641 DOI: 10.1039/d1ob01441b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new synthetic approach for obtaining previously unknown bis(1,3-azol-2-yl)acetonitriles and bis(1,3-azol-2-yl)methanes has been developed. It is based on 1,3-dipolar cycloaddition between 2-unsubstituted imidazole N-oxides and 2-(1,3-azol-2-yl)-3,3-dimethylacrylonitriles, which are easily available through the condensation of (1,3-azol-2-yl)acetonitriles with acetone. The method allows for the construction of various unsymmetric derivatives based on imidazole, oxazole, thiazole, and 1,3,4-thiadiazole cyclic molecules. Its potential has been demonstrated via the synthesis of 24 diverse derivatives with yields of 29-92%. Bis(1,3-azol-2-yl)acetonitriles can be converted to the corresponding bis(1,3-azol-2-yl)methanes via simple acid hydrolysis followed by subsequent spontaneous decarboxylation at nearly quantitative yields.
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Affiliation(s)
- Anton V Kutasevich
- Department of Fine Organic Synthesis and Chemistry of Dyes, Mendeleev University of Chemical Technology, Miusskaya Sq., 9, Moscow 125047, Russian Federation.
| | - Anton S Niktarov
- Department of Fine Organic Synthesis and Chemistry of Dyes, Mendeleev University of Chemical Technology, Miusskaya Sq., 9, Moscow 125047, Russian Federation.
| | - Ekaterina S Uvarova
- Department of Fine Organic Synthesis and Chemistry of Dyes, Mendeleev University of Chemical Technology, Miusskaya Sq., 9, Moscow 125047, Russian Federation.
| | - Valentina A Karnoukhova
- A.N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, Vavilova St. 28, Moscow, 119991, Russian Federation
| | - Vitaly S Mityanov
- Department of Fine Organic Synthesis and Chemistry of Dyes, Mendeleev University of Chemical Technology, Miusskaya Sq., 9, Moscow 125047, Russian Federation.
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Zhou J, Jiang B, Guo M, Sumii Y, Shibata N. Aryl gem-Difluorovinyl Pinacolboronates: Synthesis and Utility for Suzuki-Miyaura Coupling Reaction. CHEM LETT 2020. [DOI: 10.1246/cl.200621] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Jun Zhou
- Department of Nanopharmaceutical Sciences, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya, Aichi 466-8555, Japan
| | - Bingyao Jiang
- Department of Nanopharmaceutical Sciences, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya, Aichi 466-8555, Japan
| | - Ming Guo
- Department of Nanopharmaceutical Sciences, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya, Aichi 466-8555, Japan
| | - Yuji Sumii
- Department of Nanopharmaceutical Sciences, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya, Aichi 466-8555, Japan
| | - Norio Shibata
- Department of Nanopharmaceutical Sciences, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya, Aichi 466-8555, Japan
- Institute of Advanced Fluorine-Containing Materials, Zhejiang Normal University, 688 Yingbin Avenue, Jinhua 321004, P. R. China
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Kutasevich AV, Perevalov VP, Mityanov VS. Recent Progress in Non‐Catalytic C–H Functionalization of Heterocyclic
N
‐Oxides. European J Org Chem 2020. [DOI: 10.1002/ejoc.202001115] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Anton V. Kutasevich
- Department of Fine Organic Synthesis and Chemistry of Dyes Mendeleev University of Chemical Technology Miusskaya Sq., 9 125047 Moscow Russian Federation
| | - Valery P. Perevalov
- Department of Fine Organic Synthesis and Chemistry of Dyes Mendeleev University of Chemical Technology Miusskaya Sq., 9 125047 Moscow Russian Federation
| | - Vitaly S. Mityanov
- Department of Fine Organic Synthesis and Chemistry of Dyes Mendeleev University of Chemical Technology Miusskaya Sq., 9 125047 Moscow Russian Federation
- N.D. Zelinsky Institute of Organic Chemistry Russian Academy of Sciences Leninsky Pr., 47 119991 Moscow Russian Federation
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Synthesis of highly functional imidazole derivatives via assembly of 2-unsubstituted imidazole N-oxides with CH-acids and arylglyoxals. Tetrahedron 2020. [DOI: 10.1016/j.tet.2020.130947] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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7
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Blahun OP, Redka MO, Voitenko ZV, Kysil AI, Dobrydnev AV, Grygorenko OO. 2,2-Difluorovinyl Pinacolborane - A New Versatile Reagent for the Suzuki-Miyaura Reaction. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901118] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Oleksandr P. Blahun
- Enamine Ltd.; Chervonotkatska Street 78 02094 Kyiv Ukraine
- Taras Shevchenko National University of Kyiv; Volodymyrska Street 60 01601 Kyiv Ukraine
| | - Mykhailo O. Redka
- Enamine Ltd.; Chervonotkatska Street 78 02094 Kyiv Ukraine
- Taras Shevchenko National University of Kyiv; Volodymyrska Street 60 01601 Kyiv Ukraine
| | - Zoia V. Voitenko
- Taras Shevchenko National University of Kyiv; Volodymyrska Street 60 01601 Kyiv Ukraine
| | - Andrii I. Kysil
- Taras Shevchenko National University of Kyiv; Volodymyrska Street 60 01601 Kyiv Ukraine
| | - Alexey V. Dobrydnev
- Enamine Ltd.; Chervonotkatska Street 78 02094 Kyiv Ukraine
- Taras Shevchenko National University of Kyiv; Volodymyrska Street 60 01601 Kyiv Ukraine
| | - Oleksandr O. Grygorenko
- Enamine Ltd.; Chervonotkatska Street 78 02094 Kyiv Ukraine
- Taras Shevchenko National University of Kyiv; Volodymyrska Street 60 01601 Kyiv Ukraine
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Wang B, Zhao X, Liu Q, Cao S. Direct defluorinative amidation-hydrolysis reaction of gem-difluoroalkenes with N,N-dimethylformamide, and primary and secondary amines. Org Biomol Chem 2018; 16:8546-8552. [PMID: 30361736 DOI: 10.1039/c8ob02322k] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
A novel and efficient method for the synthesis of arylacetamides by the reactions of gem-difluoroalkenes with N,N-dialkylformamides, and primary and secondary amines with the assistance of KOtBu and water was developed.
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Affiliation(s)
- Biyun Wang
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology (ECUST), Shanghai 200237, China.
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Liu Y, Zhou F, He K, Cheng T, Zhong Z, Liu Y, Yang Y. Design, synthesis and biological evaluation of 3-fluoroalkenyloxindole ring-fused 3-trifluoromethyloxindoles obtained from indoline-2,3-diones and difluoromethylene phosphabetaine. PHOSPHORUS SULFUR 2017. [DOI: 10.1080/10426507.2017.1417297] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Yi Liu
- Key Laboratory of Green Catalysis of Higher Education Institutes of Sichuan, College of Chemistry and Environmental Engineering, Sichuan University of Science & Engineering, Zigong, Sichuan, China
| | - Fuxiang Zhou
- Key Laboratory of Green Catalysis of Higher Education Institutes of Sichuan, College of Chemistry and Environmental Engineering, Sichuan University of Science & Engineering, Zigong, Sichuan, China
| | - Kuicheng He
- Key Laboratory of Green Catalysis of Higher Education Institutes of Sichuan, College of Chemistry and Environmental Engineering, Sichuan University of Science & Engineering, Zigong, Sichuan, China
| | - Ting Cheng
- Key Laboratory of Green Catalysis of Higher Education Institutes of Sichuan, College of Chemistry and Environmental Engineering, Sichuan University of Science & Engineering, Zigong, Sichuan, China
| | - Zhi Zhong
- Key Laboratory of Green Catalysis of Higher Education Institutes of Sichuan, College of Chemistry and Environmental Engineering, Sichuan University of Science & Engineering, Zigong, Sichuan, China
| | - Yingle Liu
- Key Laboratory of Green Catalysis of Higher Education Institutes of Sichuan, College of Chemistry and Environmental Engineering, Sichuan University of Science & Engineering, Zigong, Sichuan, China
- Sichuan Province Key Laboratory of Natural Products and Small molecule Synthesis, Leshan Normal University, Shizhong District, Leshan, Sichuan, China
| | - Yi Yang
- Key Laboratory of Green Catalysis of Higher Education Institutes of Sichuan, College of Chemistry and Environmental Engineering, Sichuan University of Science & Engineering, Zigong, Sichuan, China
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Mityanov VS, Kutasevich AV, Krayushkin MM, Lichitsky BV, Dudinov AA, Komogortsev AN, Kuzmina LG. Condensation of imidazole N-oxide with Meldrum’s acid and aldehydes: a new method for C2-functionalization of 2-unsubstituted imidazole N-oxides. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.10.061] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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11
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Huan F, Chen QY, Guo Y. Visible Light-Induced Photoredox Construction of Trifluoromethylated Quaternary Carbon Centers from Trifluoromethylated Tertiary Bromides. J Org Chem 2016; 81:7051-63. [DOI: 10.1021/acs.joc.6b00930] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Feng Huan
- Key Laboratory of Organofluorine
Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, P. R. of China
| | - Qing-Yun Chen
- Key Laboratory of Organofluorine
Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, P. R. of China
| | - Yong Guo
- Key Laboratory of Organofluorine
Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, P. R. of China
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Liu Y, Zhang K, Huang Y, Pan S, Liu XQ, Yang Y, Jiang Y, Xu XH. Synthesis of 3-fluoroalkenyl-3-trifluoromethyl-2-oxindoles by the reaction of indoline-2,3-diones with difluoromethylene phosphabetaine. Chem Commun (Camb) 2016; 52:5969-72. [PMID: 27056087 DOI: 10.1039/c6cc00666c] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
An unprecedent reaction of indoline-2,3-diones and (triphenylphosphonio)difluoroacetate (PDFA) afforded novel 3-fluoroalkenyl-3-trifluoromethyl-2-oxindoles in moderate to excellent yields. These products could be transformed into other trifluoromethylated oxindole derivatives.
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Affiliation(s)
- Yingle Liu
- School of Chemistry and Pharmaceutical Engineering, Sichuan University of Science & Engineering, 180 Xueyuan Street, Huixing Lu, Zigong, Sichuan 643000, China.
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