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Romanov AR, Kondrashov EV, Zinchenko SV. Synthesis of 5-(trifluoroacetyl)imidazoles from Bromoenones and Benzimidamides via Aza-Michael Initiated Ring Closure Reaction. Curr Org Synth 2024; 21:195-209. [PMID: 37078355 DOI: 10.2174/1570179420666230420100643] [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: 09/12/2022] [Revised: 02/08/2023] [Accepted: 02/21/2023] [Indexed: 04/21/2023]
Abstract
INTRODUCTION A simple method for the preparation of 5-(trifluoroacetyl)imidazoles was elaborated. METHODS The reaction of trifluoromethyl(α-bromoalkenyl)ketones with benzimidamides was employed to afford the target heterocycles in good yields. RESULTS The assembly of imidazole core proceeds via aza-Michael adduct formation followed by intramolecular nucleophilic substitution and spontaneous aromatization as an oxidation sequence. CONCLUSION The yields of target imidazoles can be improved by the use of soft oxidizing agents.
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Affiliation(s)
- Alexey R Romanov
- The Laboratory of Halogen Organic Compound, A. E. Favorsky Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, Irkutsk, 664033, Russia
| | - Evgeniy V Kondrashov
- The Laboratory of Halogen Organic Compound, A. E. Favorsky Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, Irkutsk, 664033, Russia
| | - Sergey V Zinchenko
- The Laboratory of Halogen Organic Compound, A. E. Favorsky Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, Irkutsk, 664033, Russia
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2
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Ukhanev SA, Fedorov SV, Krivdin LB. Computational 19 F NMR of trifluoromethyl derivatives of alkenes, pyrimidines, and indenes. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2023; 61:306-317. [PMID: 36740363 DOI: 10.1002/mrc.5335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 02/01/2023] [Accepted: 02/02/2023] [Indexed: 06/18/2023]
Abstract
The 19 F NMR chemical shifts of 13 trifluoromethyl derivatives of alkenes, pyrimidines, and indenes were calculated at the DFT level using the BhandHLYP, BHandH, PBE, PBE0, O3LYP, B3LYP, KT2, and KT3 functionals in combination with the pcS-2 basis set. Best result was documented for the BHandHLYP functional: The mean absolute error (MAE) of 0.66 ppm for the scaled values was achieved for the range of about 20 ppm. Solvent, vibrational, and relativistic corrections were found to be rather small, especially when taken in combination, generally demonstrating a slight decrease in the difference between calculated and experimental fluorine chemical shifts. As a measure of the practical importance of these compounds, one should recall that the growing number of life science products that contain trifluoromethyl groups provides a continuing driving force for the development of an effective methodology that enables both regio- and stereoselective introduction of trifluoromethyl groups into both aliphatic and aromatic systems.
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Affiliation(s)
- Stepan A Ukhanev
- A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, Favorsky St. 1, Irkutsk, 664033, Russia
| | - Sergei V Fedorov
- A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, Favorsky St. 1, Irkutsk, 664033, Russia
| | - Leonid B Krivdin
- A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, Favorsky St. 1, Irkutsk, 664033, Russia
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3
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Reactions of CF3-Haloenones with 1,3-Dicarbonyl Compounds: Chemo- and Stereoselective Assembly of Fluorinated Dihydrofurans. J Fluor Chem 2021. [DOI: 10.1016/j.jfluchem.2021.109819] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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4
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Romanov AR, Mareev AV, Popov AV, Zinchenko SV. One-Pot Synthesis of Diethyl 2-Aryl-3-(trifluoroacetyl)-cyclopropane-1,1-dicarboxylates. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2020. [DOI: 10.1134/s1070428020090122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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5
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Zubkov IN, Ushakov IA, Chipanina NN, Rulev AY. Halogenation of Electron‐Deficient Vicinal Substituted Alkenes: Regio‐ and Stereoselectivity. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000394] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Ilya N. Zubkov
- A. E. Favorsky Institute of Chemistry Siberian Branch of the Russian Academy of Sciences 664033 Irkutsk Russia
| | - Igor A. Ushakov
- A. E. Favorsky Institute of Chemistry Siberian Branch of the Russian Academy of Sciences 664033 Irkutsk Russia
| | - Nina N. Chipanina
- A. E. Favorsky Institute of Chemistry Siberian Branch of the Russian Academy of Sciences 664033 Irkutsk Russia
| | - Alexander Yu. Rulev
- A. E. Favorsky Institute of Chemistry Siberian Branch of the Russian Academy of Sciences 664033 Irkutsk Russia
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Rulev AY, Romanov AR, Kondrashov EV, Ushakov IA, Muzalevskiy VM, Nenajdenko VG. Trifluoromethylated morpholines condensed with oxetane: Synthesis and transformations. J Fluor Chem 2019. [DOI: 10.1016/j.jfluchem.2019.109366] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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7
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Kumon T, Yoshida K, Yamada S, Agou T, Kubota T, Konno T. First practical synthesis of 2- or 3-fluoroalkylated indenols via cobalt-catalyzed [2 + 3] carbocyclization of fluorine-containing alkynes and 2-iodoaryl ketones. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.05.042] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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8
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Romanov AR, Cahard D, Rulev AY. Regioselectivity Issues in the Addition of Grignard Reagents to Trifluoromethylated α-Bromoenones. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900155] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Alexey R. Romanov
- A. E. Favorsky Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences; 1 Favorsky Str., Irkutsk 664033 Russia
- CNRS UMR 6014 COBRA; Normandie Université; 76821 Mont Saint Aignan France
| | - Dominique Cahard
- CNRS UMR 6014 COBRA; Normandie Université; 76821 Mont Saint Aignan France
| | - Alexander Yu. Rulev
- A. E. Favorsky Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences; 1 Favorsky Str., Irkutsk 664033 Russia
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9
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Rulev AY, Romanov AR, Kondrashov EV, Ushakov IA, Muzalevskiy VM, Nenajdenko VG. Assembly of Trifluoromethylated Morpholines through Cascade Reactions of Bromoenones with Secondary Amino Alcohols. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800659] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Alexander Yu. Rulev
- A. E. Favorsky Institute of Chemistry; Siberian Branch of the Russian Academy of Sciences; 664033 Irkutsk Russia
| | - Alexey R. Romanov
- A. E. Favorsky Institute of Chemistry; Siberian Branch of the Russian Academy of Sciences; 664033 Irkutsk Russia
| | - Evgeniy V. Kondrashov
- A. E. Favorsky Institute of Chemistry; Siberian Branch of the Russian Academy of Sciences; 664033 Irkutsk Russia
| | - Igor A. Ushakov
- A. E. Favorsky Institute of Chemistry; Siberian Branch of the Russian Academy of Sciences; 664033 Irkutsk Russia
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10
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Vdovenko SI, Gerus II, Pagacz-Kostrzewa M, Wierzejewska M, Zhuk YI, Kukhar VP. Special feature of kinetics of ZcE isomerization of β-N-methylaminovinyl trifluoromethyl ketone in Ar matrix exposed to UV radiation and spontaneous E⇌Z isomerization of α-methyl-β-N-methylaminovinyl trifluoromethyl ketone. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 199:130-140. [PMID: 29579716 DOI: 10.1016/j.saa.2018.03.049] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Accepted: 03/13/2018] [Indexed: 06/08/2023]
Abstract
Although it is well known that reactivity of α,β-unsaturated enaminoketones is closely associated with spatial and electronic structure but until now little attention was devoted to quantitative investigation of interconversion of different stereoisomeric forms of enaminoketones. In present work we studied peculiarities of kinetics of Z⇌E isomerization of enaminoketone 4-(N-methylamino)-1,1,1-trifluorobut-3-en-2-one F3C-COCHCHNH(CH3) (1) in Ar-matrix exposed to UV-radiation (λ=340nm) with IR Fourier and 2D correlation spectroscopy and we found that Z-s-Z-s-trans isomer transforms primarily into two E-isomers, E-s-E-s-trans and E-s-Z-s-trans which further turn into the E-s-E-s-cis and E-s-Z-s-cis conformers all interconversion rate constants being comparable in magnitude. Along with this process long-term exposure to the UV-radiation results in proton transfer from nitrogen of methylamino group to carbonyl oxygen with simultaneous isomerization of 'cyclic' iminoenol form into 'linear'one. In solution of enaminoketone 4-(N-methylamino)-1,1,1-trifluoro-3-methylbut-3-en-2-one F3C-CO-C(CH3)CH-NH(CH3) (2) we observed reversed process, namely, spontaneous interconversion of the E-s-E-s-trans and E-s-Z-s-trans conformers into the Z-s-Z-trans isomer. It was found that rate constants of the dimeric forms of the E-s-E-s-trans and E-s-Z-s-trans conformers are higher than those of the monomers and are independent on total enaminoketone concentration. Addition of highly polar HMPA promotes proton transfer from nitrogen to oxygen in the Z-s-Z-s-trans isomer of 2 with subsequent isomerization into the linear imino-enol product but the rate constant of this transformation is ten-fold smaller than that for 1 in the Ar matrix exposed to UV radiation.
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Affiliation(s)
- Sergey I Vdovenko
- Institute of Bioorganic Chemistry and Petrochemistry, National Academy of Sciences of Ukraine, ul. Murmanska 1, 02094 Kiev, Ukraine.
| | - Igor I Gerus
- Institute of Bioorganic Chemistry and Petrochemistry, National Academy of Sciences of Ukraine, ul. Murmanska 1, 02094 Kiev, Ukraine
| | | | - Maria Wierzejewska
- Faculty of Chemistry, University of Wroclaw, Joliot-Curie 14, 50-383 Wroclaw, Poland
| | - Yuri I Zhuk
- Institute of Bioorganic Chemistry and Petrochemistry, National Academy of Sciences of Ukraine, ul. Murmanska 1, 02094 Kiev, Ukraine
| | - Valery P Kukhar
- Institute of Bioorganic Chemistry and Petrochemistry, National Academy of Sciences of Ukraine, ul. Murmanska 1, 02094 Kiev, Ukraine
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11
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Affiliation(s)
- Alexander Yu. Rulev
- A. E. Favorsky Institute of Chemistry; Siberian Division of the Russian Academy of Sciences; 664033 Irkutsk Russia
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12
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Obijalska E, Pawelec M, Mlostoń G, Capperucci A, Tanini D, Heimgartner H. A Remarkable Influence of a Trifluoromethyl Group on the Reactions of β-Mercaptoalcohols with Fluorinated α-Bromoenones. European J Org Chem 2018. [DOI: 10.1002/ejoc.201701752] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Emilia Obijalska
- Department of Organic and Applied Chemistry; University of Łódź; Tamka 12 91-403 Łódź Poland
| | - Maria Pawelec
- Department of Organic and Applied Chemistry; University of Łódź; Tamka 12 91-403 Łódź Poland
| | - Grzegorz Mlostoń
- Department of Organic and Applied Chemistry; University of Łódź; Tamka 12 91-403 Łódź Poland
| | - Antonella Capperucci
- Chemistry Department “Ugo Schiff”; University of Florence; Via della Lastruccia 3-13 50019 Sesto Fiorentino Italy
| | - Damiano Tanini
- Chemistry Department “Ugo Schiff”; University of Florence; Via della Lastruccia 3-13 50019 Sesto Fiorentino Italy
| | - Heinz Heimgartner
- Department of Chemistry; University of Zurich; Winterthurerstrasse 190 8057 Zurich Switzerland
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13
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Iakovenko RO, Kazakova AN, Boyarskaya IA, Gurzhiy VV, Avdontceva MS, Panikorovsky TL, Muzalevskiy VM, Nenajdenko VG, Vasilyev AV. Superacid-Promoted Synthesis of CF3-Indenes Using Brominated CF3-Enones. European J Org Chem 2017. [DOI: 10.1002/ejoc.201701085] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Roman O. Iakovenko
- Department of Organic Chemistry; Institute of Chemistry; Saint Petersburg State University; Universitetskaya nab. 7/9 199034 Saint Petersburg Russia
| | - Anna N. Kazakova
- Department of Organic Chemistry; Institute of Chemistry; Saint Petersburg State University; Universitetskaya nab. 7/9 199034 Saint Petersburg Russia
| | - Irina A. Boyarskaya
- Department of Organic Chemistry; Institute of Chemistry; Saint Petersburg State University; Universitetskaya nab. 7/9 199034 Saint Petersburg Russia
| | - Vladislav V. Gurzhiy
- Center for X-ray Diffraction Studies Research Park; St. Petersburg State University; Universitetskiy pr. 26 198504 Saint Petersburg, Petrodvoretz Russia
| | - Margarita S. Avdontceva
- Center for X-ray Diffraction Studies Research Park; St. Petersburg State University; Universitetskiy pr. 26 198504 Saint Petersburg, Petrodvoretz Russia
| | - Taras L. Panikorovsky
- Center for X-ray Diffraction Studies Research Park; St. Petersburg State University; Universitetskiy pr. 26 198504 Saint Petersburg, Petrodvoretz Russia
| | - Vasiliy M. Muzalevskiy
- Department of Chemistry; Lomonosov Moscow State University; Vorobievy Gory 1 119899 Moscow Russia
| | - Valentine G. Nenajdenko
- Department of Chemistry; Lomonosov Moscow State University; Vorobievy Gory 1 119899 Moscow Russia
| | - Aleksander V. Vasilyev
- Department of Organic Chemistry; Institute of Chemistry; Saint Petersburg State University; Universitetskaya nab. 7/9 199034 Saint Petersburg Russia
- Department of Chemistry; Saint Petersburg State Forest Technical University; Institutsky per. 5 194021 Saint Petersburg Russia
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14
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15
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Kazakova AN, Iakovenko RO, Boyarskaya IA, Ivanov AY, Avdontceva MS, Zolotarev AA, Panikorovsky TL, Starova GL, Nenajdenko VG, Vasilyev AV. Brominated CF3-allyl alcohols as multicentered electrophiles in TfOH promoted reactions with arenes. Org Chem Front 2017. [DOI: 10.1039/c6qo00643d] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Reactions of (di-)bromo-substituted CF3-allyl alcohols with/without arenes with TfOH lead to CF3-alkenes or CF3-indenes.
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Affiliation(s)
- Anna N. Kazakova
- Department of Organic Chemistry
- Institute of Chemistry
- Saint Petersburg State University
- Saint Petersburg
- Russia
| | - Roman O. Iakovenko
- Department of Organic Chemistry
- Institute of Chemistry
- Saint Petersburg State University
- Saint Petersburg
- Russia
| | - Irina A. Boyarskaya
- Department of Organic Chemistry
- Institute of Chemistry
- Saint Petersburg State University
- Saint Petersburg
- Russia
| | - Alexander Yu. Ivanov
- Center for Magnetic Resonance
- Research Park
- St Petersburg State University
- Saint Petersburg
- Russia
| | - Margarita S. Avdontceva
- Center for X-ray Diffraction Studies Research Park
- St Petersburg State University
- Saint Petersburg
- Russia
| | - Andrei A. Zolotarev
- Center for X-ray Diffraction Studies Research Park
- St Petersburg State University
- Saint Petersburg
- Russia
| | - Taras L. Panikorovsky
- Center for X-ray Diffraction Studies Research Park
- St Petersburg State University
- Saint Petersburg
- Russia
| | - Galina L. Starova
- Center for X-ray Diffraction Studies Research Park
- St Petersburg State University
- Saint Petersburg
- Russia
| | | | - Aleksander V. Vasilyev
- Department of Organic Chemistry
- Institute of Chemistry
- Saint Petersburg State University
- Saint Petersburg
- Russia
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16
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Rulev AY, Romanov AR, Kondrashov EV, Ushakov IA, Vashchenko AV, Muzalevskiy VM, Nenajdenko VG. Domino Assembly of Trifluoromethylated N,O-Heterocycles by the Reaction of Fluorinated α-Bromoenones with Amino Alcohols. J Org Chem 2016; 81:10029-10034. [DOI: 10.1021/acs.joc.6b01927] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Alexander Yu. Rulev
- A.
E. Favorsky Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, Irkutsk 664033, Russia
| | - Alexey R. Romanov
- A.
E. Favorsky Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, Irkutsk 664033, Russia
| | - Evgeniy V. Kondrashov
- A.
E. Favorsky Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, Irkutsk 664033, Russia
| | - Igor A. Ushakov
- A.
E. Favorsky Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, Irkutsk 664033, Russia
| | - Alexander V. Vashchenko
- A.
E. Favorsky Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, Irkutsk 664033, Russia
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Kondrashov EV, Romanov AR, Ushakov IA, Rulev AY. Alkyl-and arylsulfanyl-substituted unsaturated carbonyl compounds. J Sulphur Chem 2016. [DOI: 10.1080/17415993.2016.1215448] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Evgeniy V. Kondrashov
- A. E. Favorsky Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, Irkutsk, Russia
| | - Alexey R. Romanov
- A. E. Favorsky Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, Irkutsk, Russia
| | - Igor A. Ushakov
- National Research Irkutsk State Technical University, Irkutsk, Russia
| | - Alexander Yu. Rulev
- A. E. Favorsky Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, Irkutsk, Russia
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18
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Kondrashov EV, Oznobikhina LP, Aksamentova TN, Chipanina NN, Romanov AR, Rulev AY. Basicity of the polydentate captodative aminoenones. Ab initio
, DFT, and FTIR study. J PHYS ORG CHEM 2016. [DOI: 10.1002/poc.3532] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- E. V. Kondrashov
- A. E. Favorsky Institute of Chemistry; Siberian Branch of the Russian Academy of Sciences; 1 Favorsky St. 664033 Irkutsk Russia
| | - L. P. Oznobikhina
- A. E. Favorsky Institute of Chemistry; Siberian Branch of the Russian Academy of Sciences; 1 Favorsky St. 664033 Irkutsk Russia
| | - T. N. Aksamentova
- A. E. Favorsky Institute of Chemistry; Siberian Branch of the Russian Academy of Sciences; 1 Favorsky St. 664033 Irkutsk Russia
| | - N. N. Chipanina
- A. E. Favorsky Institute of Chemistry; Siberian Branch of the Russian Academy of Sciences; 1 Favorsky St. 664033 Irkutsk Russia
| | - A. R. Romanov
- A. E. Favorsky Institute of Chemistry; Siberian Branch of the Russian Academy of Sciences; 1 Favorsky St. 664033 Irkutsk Russia
| | - A. Yu. Rulev
- A. E. Favorsky Institute of Chemistry; Siberian Branch of the Russian Academy of Sciences; 1 Favorsky St. 664033 Irkutsk Russia
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19
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Muzalevskiy VM, Rulev AY, Kondrashov EV, Romanov AR, Ushakov IA, Chertkov VA, Nenajdenko VG. Multichannel Reaction of α-Bromoenones with 1,2-Diamines: Synthesis of 1,4-Diazabicyclo[4.1.0]hept-4-enes by Reaction withN-Unsubstituted 1,2-Diamines. European J Org Chem 2016. [DOI: 10.1002/ejoc.201501584] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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20
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Rulev AY, Romanov AR. Unsaturated polyfluoroalkyl ketones in the synthesis of nitrogen-bearing heterocycles. RSC Adv 2016. [DOI: 10.1039/c5ra23759a] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
This review focuses on the recent achievements and new developments in the synthesis of polyfluorinated aza-heterocycles based on fluorine-bearing enones and ynones published in the last decade.
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Affiliation(s)
- A. Yu. Rulev
- A. E. Favorsky Institute of Chemistry
- Siberian Division of the Russian Academy of Sciences
- Irkutsk 664033
- Russia
| | - A. R. Romanov
- A. E. Favorsky Institute of Chemistry
- Siberian Division of the Russian Academy of Sciences
- Irkutsk 664033
- Russia
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21
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Muzalevskiy VM, Ustynyuk YA, Gloriozov IP, Chertkov VA, Rulev AY, Kondrashov EV, Ushakov IA, Romanov AR, Nenajdenko VG. Experimental and Theoretical Study of an Intramolecular CF3-Group Shift in the Reactions of α-Bromoenones with 1,2-Diamines. Chemistry 2015; 21:16982-9. [PMID: 26440451 DOI: 10.1002/chem.201502706] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2015] [Indexed: 01/09/2023]
Abstract
The reactions of trifluoromethylated 2-bromoenones and N,N'-dialkyl-1,2-diamines have been studied. Depending on the structures of the starting compounds, the formation of 2-trifluoroacetylpiperazine or 3-trifluoromethylpiperazine-2-ones was observed. The mechanism of the reaction is discussed in terms of multistep processes involving sequential substitution of bromine in the starting α-bromoenones and intramolecular cyclization of the captodative aminoenones as key intermediates to form the target heterocycles. The results of theoretical calculations are in perfect agreement with the experimental data. The unique role of the trifluoromethyl group in this reaction is demonstrated.
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Affiliation(s)
- Vasily M Muzalevskiy
- Department of Chemistry, Moscow State University, Leninskie Gory, Moscow 119992 (Russia), Fax: (+7) 495-932-8846
| | - Yury A Ustynyuk
- Department of Chemistry, Moscow State University, Leninskie Gory, Moscow 119992 (Russia), Fax: (+7) 495-932-8846
| | - Igor P Gloriozov
- Department of Chemistry, Moscow State University, Leninskie Gory, Moscow 119992 (Russia), Fax: (+7) 495-932-8846
| | - Vyacheslav A Chertkov
- Department of Chemistry, Moscow State University, Leninskie Gory, Moscow 119992 (Russia), Fax: (+7) 495-932-8846
| | - Alexander Yu Rulev
- A. E. Favorsky Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, 1, Favorsky Str., Irkutsk 664033 (Russia), Fax: (+7) 3952-419346.
| | - Evgeniy V Kondrashov
- A. E. Favorsky Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, 1, Favorsky Str., Irkutsk 664033 (Russia), Fax: (+7) 3952-419346
| | - Igor A Ushakov
- A. E. Favorsky Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, 1, Favorsky Str., Irkutsk 664033 (Russia), Fax: (+7) 3952-419346
| | - Alexey R Romanov
- A. E. Favorsky Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, 1, Favorsky Str., Irkutsk 664033 (Russia), Fax: (+7) 3952-419346
| | - Valentine G Nenajdenko
- Department of Chemistry, Moscow State University, Leninskie Gory, Moscow 119992 (Russia), Fax: (+7) 495-932-8846.
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22
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Donslund BS, Monleón A, Larsen J, Ibsen L, Jørgensen KA. The stereoselective formation of highly substituted CF3-dihydropyrans as versatile building blocks. Chem Commun (Camb) 2015. [PMID: 26225818 DOI: 10.1039/c5cc04874e] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The highly enantioselective dienamine-mediated formation of 5-bromo-6-(trifluoromethyl)-3,4-dihydro-2H-pyrans from α,β-unsaturated aldehydes and α-bromo-(trifluoromethyl)-enones employing a C2-symmetric aminocatalyst is described. The products are demonstrated to be applicable in coupling reactions directly onto the ring, thereby granting access to a broad scope of highly substituted 6-(trifluoromethyl)-dihydropyran compounds.
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Affiliation(s)
- Bjarke S Donslund
- Department of Chemistry, Aarhus University, DK-8000 Aarhus C, Denmark.
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Rulev AY, Muzalevskiy VM, Kondrashov EV, Ushakov IA, Romanov AR, Khrustalev VN, Nenajdenko VG. Reaction of α-Bromo Enones with 1,2-Diamines. Cascade Assembly of 3-(Trifluoromethyl)piperazin-2-ones via Rearrangement. Org Lett 2013; 15:2726-9. [DOI: 10.1021/ol401041f] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Alexander Yu. Rulev
- A. E. Favorsky Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, Irkutsk 664033, Russia, Department of Chemistry, Lomonosov Moscow State University, 119899 Moscow, Russia, A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Moscow 119991, Russia
| | - Vasiliy M. Muzalevskiy
- A. E. Favorsky Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, Irkutsk 664033, Russia, Department of Chemistry, Lomonosov Moscow State University, 119899 Moscow, Russia, A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Moscow 119991, Russia
| | - Evgeniy V. Kondrashov
- A. E. Favorsky Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, Irkutsk 664033, Russia, Department of Chemistry, Lomonosov Moscow State University, 119899 Moscow, Russia, A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Moscow 119991, Russia
| | - Igor A. Ushakov
- A. E. Favorsky Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, Irkutsk 664033, Russia, Department of Chemistry, Lomonosov Moscow State University, 119899 Moscow, Russia, A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Moscow 119991, Russia
| | - Alexey R. Romanov
- A. E. Favorsky Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, Irkutsk 664033, Russia, Department of Chemistry, Lomonosov Moscow State University, 119899 Moscow, Russia, A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Moscow 119991, Russia
| | - Victor N. Khrustalev
- A. E. Favorsky Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, Irkutsk 664033, Russia, Department of Chemistry, Lomonosov Moscow State University, 119899 Moscow, Russia, A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Moscow 119991, Russia
| | - Valentine G. Nenajdenko
- A. E. Favorsky Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, Irkutsk 664033, Russia, Department of Chemistry, Lomonosov Moscow State University, 119899 Moscow, Russia, A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Moscow 119991, Russia
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Chipanina NN, Aksamentova TN, Rulev AY. Stereoelectronic structure of α-bromoalkenyl trifluoromethyl ketones. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2009. [DOI: 10.1134/s1070428009100017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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