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Malmir M, Heravi MM, Yekke-Ghasemi Z, Saberi S, Mirzaei M. Fabrication of Heterogeneous Zr-containing Polyoxometalate as an Efficient Catalyst for the Synthesis of a Broad Range of 1,5-Benzodiazepine Derivatives. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.134631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Okada E, Ota N, Nakagawa S, Kamitori Y. Computational Study for the Aromatic Nucleophilic Substitution of 4-Dimethylamino-3-trifluoroacetyl- quinoline with Various Nucleophiles. HETEROCYCLES 2021. [DOI: 10.3987/com-20-s(k)62] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Chalyk BA, Hrebeniuk KV, Fil YV, Gavrilenko KS, Rozhenko AB, Vashchenko BV, Borysov OV, Biitseva AV, Lebed PS, Bakanovych I, Moroz YS, Grygorenko OO. Synthesis of 5-(Fluoroalkyl)isoxazole Building Blocks by Regioselective Reactions of Functionalized Halogenoximes. J Org Chem 2019; 84:15877-15899. [PMID: 31626546 PMCID: PMC7341682 DOI: 10.1021/acs.joc.9b02264] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A comprehensive study on the synthesis of 5-fluoroalkyl-substituted isoxazoles starting from functionalized halogenoximes is reported. One-pot metal-free [3 + 2] cycloaddition of CF3-substituted alkenes and halogenoximes bearing ester, bromo, chloromethyl, and protected amino groups was developed for the preparation of 5-trifluoromethylisoxazoles. The target 3,5-disubstituted derivatives were obtained in a regioselective manner in good to excellent yield on up to 130 g scale. 5-Fluoromethyl- and 5-difluoromethylisoxazoles were synthesized by late-stage deoxofluorination of the corresponding 5-hydroxymethyl or 5-formyl derivatives, respectively, in turn prepared via metal-free cycloaddition of halogenoximes and propargylic alcohol. An alternative approach based on nucleophilic substitution in 5-bromomethyl derivatives was found to be more convenient for the preparation of 5-fluoromethylisoxazoles. Reaction of isoxazole-5-carbaldehydes with the Ruppert-Prakash reagent was used for the preparation of (β,β,β-trifluoro-α-hydroxyethyl)isoxazoles. Utility of described approaches was shown by multigram preparation of side-chain functionalized mono-, di-, and trifluoromethylisoxazoles, for example, fluorinated analogues of ABT-418 and ESI-09.
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Affiliation(s)
- Bohdan A Chalyk
- Enamine Ltd , (www.enamine.net), Chervonotkatska Street 78 , Kyiv 02094 , Ukraine
- Institute of Organic Chemistry , National Academy of Sciences of Ukraine , Murmanska Street 5 , Kyiv 02660 , Ukraine
| | - Kateryna V Hrebeniuk
- Enamine Ltd , (www.enamine.net), Chervonotkatska Street 78 , Kyiv 02094 , Ukraine
| | - Yulia V Fil
- Enamine Ltd , (www.enamine.net), Chervonotkatska Street 78 , Kyiv 02094 , Ukraine
| | - Konstantin S Gavrilenko
- Enamine Ltd , (www.enamine.net), Chervonotkatska Street 78 , Kyiv 02094 , Ukraine
- Taras Shevchenko National University of Kyiv , Volodymyrska Street 60 , Kyiv 01601 , Ukraine
| | - Alexander B Rozhenko
- Institute of Organic Chemistry , National Academy of Sciences of Ukraine , Murmanska Street 5 , Kyiv 02660 , Ukraine
| | - Bohdan V Vashchenko
- Enamine Ltd , (www.enamine.net), Chervonotkatska Street 78 , Kyiv 02094 , Ukraine
- Taras Shevchenko National University of Kyiv , Volodymyrska Street 60 , Kyiv 01601 , Ukraine
| | - Oleksandr V Borysov
- Enamine Ltd , (www.enamine.net), Chervonotkatska Street 78 , Kyiv 02094 , Ukraine
- Institute of Organic Chemistry , National Academy of Sciences of Ukraine , Murmanska Street 5 , Kyiv 02660 , Ukraine
| | - Angelina V Biitseva
- Enamine Ltd , (www.enamine.net), Chervonotkatska Street 78 , Kyiv 02094 , Ukraine
- Taras Shevchenko National University of Kyiv , Volodymyrska Street 60 , Kyiv 01601 , Ukraine
| | - Pavlo S Lebed
- Enamine Ltd , (www.enamine.net), Chervonotkatska Street 78 , Kyiv 02094 , Ukraine
- Taras Shevchenko National University of Kyiv , Volodymyrska Street 60 , Kyiv 01601 , Ukraine
| | - Iulia Bakanovych
- Enamine Ltd , (www.enamine.net), Chervonotkatska Street 78 , Kyiv 02094 , Ukraine
- Taras Shevchenko National University of Kyiv , Volodymyrska Street 60 , Kyiv 01601 , Ukraine
| | - Yurii S Moroz
- Enamine Ltd , (www.enamine.net), Chervonotkatska Street 78 , Kyiv 02094 , Ukraine
- Chemspace , Ilukstes iela 38-5 , Riga LV-1082 , Latvia
| | - Oleksandr O Grygorenko
- Enamine Ltd , (www.enamine.net), Chervonotkatska Street 78 , Kyiv 02094 , Ukraine
- Taras Shevchenko National University of Kyiv , Volodymyrska Street 60 , Kyiv 01601 , Ukraine
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