1
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Kazi AA, Manjuladevi N, Kumar SS, Sharma A, Singh LR. A quick access to CF 3-containing functionalized benzofuranyl, benzothiophene and indolyl heterocycles under catalyst-free conditions. Chem Commun (Camb) 2024. [PMID: 39129527 DOI: 10.1039/d4cc02395a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/13/2024]
Abstract
A catalyst-free one-pot synthetic protocol is presented for the preparation of CF3-containing benzofuran, indolin, and benzothiophene derivatives using readily available aromatic aldehydes and ketones. 2-Bromo-3,3,3-trifluoropropene was employed as a non-corrosive and environmentally benign trifluoromethylacetylene synthon for incorporation of the CF3 group. The reaction proceeds via the formation of a suitably substituted 4,4,4-trifluoro-1-phenylbut-2-yn-1-ol intermediate, which undergoes 5-exo-dig cyclization, resulting in an exocyclic double bond with Z-configuration. The synthetic utility, substrate scope, tolerance to broader substrates are also presented.
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Affiliation(s)
- Ayazoddin Aunoddin Kazi
- Fluoro-Agrochemicals Division, CSIR-Indian Institute of Chemical Technology, Hyderabad-500 007, India.
- Chemical Sciences Division, Academy of Scientific and Innovative Research, Ghaziabad-201 002, India
| | - Nadimpalli Manjuladevi
- Fluoro-Agrochemicals Division, CSIR-Indian Institute of Chemical Technology, Hyderabad-500 007, India.
| | - Salla Suresh Kumar
- Fluoro-Agrochemicals Division, CSIR-Indian Institute of Chemical Technology, Hyderabad-500 007, India.
- Chemical Sciences Division, Academy of Scientific and Innovative Research, Ghaziabad-201 002, India
| | - Anamika Sharma
- Chemical Sciences Division, Academy of Scientific and Innovative Research, Ghaziabad-201 002, India
- Department of Natural Products and Medicinal Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad-500 007, India.
| | - L Ravithej Singh
- Fluoro-Agrochemicals Division, CSIR-Indian Institute of Chemical Technology, Hyderabad-500 007, India.
- Chemical Sciences Division, Academy of Scientific and Innovative Research, Ghaziabad-201 002, India
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2
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Sokolenko LV, Sokolenko TM, Yagupolskii YL. 1,2-Difluoroethylene (HFO-1132): synthesis and chemistry. Beilstein J Org Chem 2024; 20:1955-1966. [PMID: 39161709 PMCID: PMC11331538 DOI: 10.3762/bjoc.20.171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2024] [Accepted: 07/26/2024] [Indexed: 08/21/2024] Open
Abstract
This article provides a comprehensive overview of the synthesis and chemistry of 1,2-difluoroethylene (HFO-1132). The major routes for the preparation of the E- and Z-isomer of HFO-1132 are reviewed, along with the chemistry in radical, nucleophilic, and electrophilic reactions.
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Affiliation(s)
- Liubov V Sokolenko
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine, Academician Kukhar str., 5, Kyiv-94, 02660, Ukraine
| | - Taras M Sokolenko
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine, Academician Kukhar str., 5, Kyiv-94, 02660, Ukraine
| | - Yurii L Yagupolskii
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine, Academician Kukhar str., 5, Kyiv-94, 02660, Ukraine
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3
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Csenki JT, Novák Z. Iodonium based regioselective double nucleophilic alkene functionalization of a hydrofluoroolefin scaffold. Chem Commun (Camb) 2024; 60:726-729. [PMID: 38112008 DOI: 10.1039/d3cc04985j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2023]
Abstract
Herein, we report a modular regioselective alkene difunctionalization strategy based on the use of hydrofluoroolefin (HFO) gas as fluorous feedstock material. The transformation of the HFO gas to iodonium salt creates vicinal electrophilic sites readily available for a broad range of nucleophiles.
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Affiliation(s)
- János T Csenki
- MTA-ELTE "Lendület" Catalysis and Organic Synthesis Research Group, Eötvös Loránd University, Institute of Chemistry, Pázmány Péter stny. 1/A, Budapest H-1117, Hungary.
| | - Zoltán Novák
- MTA-ELTE "Lendület" Catalysis and Organic Synthesis Research Group, Eötvös Loránd University, Institute of Chemistry, Pázmány Péter stny. 1/A, Budapest H-1117, Hungary.
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4
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Liu Q, Yoshikawa I, Kudo K. Synthesis of 2-trifluoromethylated 3-pyrrolines/pyrrolidines via [3+2] cycloaddition of azomethine ylides with the participation of 3,3,3-trifluoroalanine. J Fluor Chem 2022. [DOI: 10.1016/j.jfluchem.2022.110061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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5
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Csenki JT, Tóth BL, Béke F, Varga B, P. Fehér P, Stirling A, Czégény Z, Bényei A, Novák Z. Synthesis of Hydrofluoroolefin‐Based Iodonium Reagent via Dyotropic Rearrangement and Its Utilization in Fluoroalkylation. Angew Chem Int Ed Engl 2022; 61:e202208420. [PMID: 35876269 PMCID: PMC9540448 DOI: 10.1002/anie.202208420] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Indexed: 11/25/2022]
Abstract
[1,2]‐shift of atoms in alkyl fragments belongs to the class of dyotropic rearrangements. Various atoms, including halogens can be involved in the migration, however participation of iodine is unprecedented. Herein, we report our experimental and DFT studies on the oxidation triggered dyotropic rearrangement of iodo and chloro functions via butterfly‐type transition state to demonstrate the migrating ability of λ3‐iodane centre. With the exploitation of dyotropic rearrangement we designed and synthesized a novel fluoroalkyl iodonium reagent from industrial feedstock gas HFO‐1234yf. We demonstrated that the hypervalent reagent serves as an excellent fluoroalkylation agent for various amines and nitrogen heterocycles.
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Affiliation(s)
- János T. Csenki
- ELTE “Lendület” Catalysis and Organic Synthesis Research Group DepartmentInstitute of ChemistryEötvös Loránd UniversityPázmány Péter stny. 1/A1117BudapestHungary
| | - Balázs L. Tóth
- ELTE “Lendület” Catalysis and Organic Synthesis Research Group DepartmentInstitute of ChemistryEötvös Loránd UniversityPázmány Péter stny. 1/A1117BudapestHungary
| | - Ferenc Béke
- ELTE “Lendület” Catalysis and Organic Synthesis Research Group DepartmentInstitute of ChemistryEötvös Loránd UniversityPázmány Péter stny. 1/A1117BudapestHungary
| | - Bálint Varga
- ELTE “Lendület” Catalysis and Organic Synthesis Research Group DepartmentInstitute of ChemistryEötvös Loránd UniversityPázmány Péter stny. 1/A1117BudapestHungary
| | - Péter P. Fehér
- Research Centre for Natural SciencesEötvös Loránd Research NetworkMagyar Tudósok körútja 21117BudapestHungary
| | - András Stirling
- Research Centre for Natural SciencesEötvös Loránd Research NetworkMagyar Tudósok körútja 21117BudapestHungary
- Department of ChemistryEszterházy Károly Catholic UniversityLeányka u. 63300EgerHungary
| | - Zsuzsanna Czégény
- Research Centre for Natural SciencesEötvös Loránd Research NetworkMagyar Tudósok körútja 21117BudapestHungary
| | - Attila Bényei
- Department of Physical ChemistryUniversity of DebrecenEgyetem tér 14032DebrecenHungary
| | - Zoltán Novák
- ELTE “Lendület” Catalysis and Organic Synthesis Research Group DepartmentInstitute of ChemistryEötvös Loránd UniversityPázmány Péter stny. 1/A1117BudapestHungary
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6
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Csenki JT, Tóth BL, Béke F, Varga B, Fehér PP, Stirling A, Czégény Z, Bényei A, Novák Z. Synthesis of Hydrofluoroolefin‐based Iodonium Reagent via Dyotropic Rearrangement and Its Utilization in Fluoroalkylation. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202208420] [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)
- János Tivadar Csenki
- Eötvös Loránd Tudományegyetem: Eotvos Lorand Tudomanyegyetem Institute of Chemistry HUNGARY
| | - Balázs László Tóth
- Eötvös Loránd Tudományegyetem: Eotvos Lorand Tudomanyegyetem Institute of Chemistry HUNGARY
| | - Ferenc Béke
- Eötvös Loránd Tudományegyetem: Eotvos Lorand Tudomanyegyetem Institute of Chemistry HUNGARY
| | - Bálint Varga
- Eötvös Loránd Tudományegyetem: Eotvos Lorand Tudomanyegyetem Institute of Chemistry HUNGARY
| | - Péter Pál Fehér
- Research Centre for Natural Sciences: Termeszettudomanyi Kutatokozpont Research Centre for Natural Sciences: Termeszettudomanyi Kutatokozpont HUNGARY
| | - András Stirling
- Research Centre for Natural Sciences: Termeszettudomanyi Kutatokozpont Research Centre for Natural Sciences: Termeszettudomanyi Kutatokozpont HUNGARY
| | - Zsuzsanna Czégény
- Research Centre for Natural Sciences: Termeszettudomanyi Kutatokozpont Research Centre for Natural Sciences: Termeszettudomanyi Kutatokozpont HUNGARY
| | - Attila Bényei
- University of Debrecen: Debreceni Egyetem Department of Physical Chemistry HUNGARY
| | - Zoltán Novák
- Eotvos Lorand Tudomanyegyetem Institute of Chemistry Pázány Péter stny 1/a 1117 Budapest HUNGARY
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7
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Csenki JT, Mészáros Á, Gonda Z, Novák Z. Stereoselective Direct N-Trifluoropropenylation of Heterocycles with a Hypervalent Iodonium Reagent. Chemistry 2021; 27:15638-15643. [PMID: 34549840 PMCID: PMC9293340 DOI: 10.1002/chem.202102840] [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: 08/04/2021] [Indexed: 12/16/2022]
Abstract
The availability and synthesis of fluorinated enamine derivatives such as N-(3,3,3-trifluoropropenyl)heterocycles are challenging, especially through direct functionalization of the heterocyclic scaffold. Herein, a stereoselective N-trifluoropropenylation method based on the use of a bench-stable trifluoropropenyl iodonium salt is described. This reagent enables the straightforward trifluoropropenylation of various N-heterocycles under mild reaction conditions, providing trifluoromethyl enamine type moieties with high stereoselectivity and efficiency.
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Affiliation(s)
- János T Csenki
- ELTE "Lendület" Catalysis and Organic Synthesis Research Group, Institute of Chemistry, Eötvös Loránd University, Pázmány Péter stny. 1/A, 1117, Budapest, Hungary
| | - Ádám Mészáros
- ELTE "Lendület" Catalysis and Organic Synthesis Research Group, Institute of Chemistry, Eötvös Loránd University, Pázmány Péter stny. 1/A, 1117, Budapest, Hungary
| | - Zsombor Gonda
- ELTE "Lendület" Catalysis and Organic Synthesis Research Group, Institute of Chemistry, Eötvös Loránd University, Pázmány Péter stny. 1/A, 1117, Budapest, Hungary
| | - Zoltán Novák
- ELTE "Lendület" Catalysis and Organic Synthesis Research Group, Institute of Chemistry, Eötvös Loránd University, Pázmány Péter stny. 1/A, 1117, Budapest, Hungary
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8
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Ikeda G, Kawasaki M, Hanamoto T. Sonogashira cross-coupling of (Z)-2‑bromo-2-CF3-vinyl benzyl sulfide and access to 4-CF3-3-iodo-2-substituted thiophenes. J Fluor Chem 2021. [DOI: 10.1016/j.jfluchem.2021.109838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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9
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Murray BJ, Marsh TGF, Yufit DS, Fox MA, Harsanyi A, Boulton LT, Sandford G. HFO‐1234yf as a CF
3
‐Building Block: Synthesis and Chemistry of CF
3
‐Ynones. European J Org Chem 2020. [DOI: 10.1002/ejoc.202001071] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Ben J. Murray
- Department of Chemistry Durham University South Road DH1 3LE Durham U.K
| | | | - Dmitri S. Yufit
- Department of Chemistry Durham University South Road DH1 3LE Durham U.K
| | - Mark A. Fox
- Department of Chemistry Durham University South Road DH1 3LE Durham U.K
| | - Antal Harsanyi
- Medicines Research Centre GlaxoSmithKline R&D Ltd Gunnels Wood Road SG1 2NY Stevenage Hertfordshire U.K
| | - Lee T. Boulton
- Medicines Research Centre GlaxoSmithKline R&D Ltd Gunnels Wood Road SG1 2NY Stevenage Hertfordshire U.K
| | - Graham Sandford
- Department of Chemistry Durham University South Road DH1 3LE Durham U.K
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