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1
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Wang H, Niu W, He Y, Wei Y, Li X, Lin YW. Synthesis of CF 3-Containing 2-Imidazolines and Imidazoles via a Iodide-Promoted [3 + 2] Cyclization Reaction. J Org Chem 2023; 88:15282-15287. [PMID: 37824681 DOI: 10.1021/acs.joc.3c01768] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2023]
Abstract
We report herein a general and effective system achieving cyclization of β-trifluoromethyl enones with amidines in the presence of 1,3-diiodo-5,5-dimethylhydantoin (DIH), which affords a range of trifluoromethylated 2-imidazolines in synthetically useful yields with good diastereoselectivities (up to 95% yield, up to 98:2 dr) and good functional group tolerance. Furthermore, the one-pot synthesis of trifluoromethylated imidazoles via sequential cyclization and oxidation is demonstrated. More significantly, the reaction mechanism was verified by ESI-MS studies of possible intermediates, and a reasonable reaction mechanism was proposed.
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Affiliation(s)
- Huamin Wang
- School of Chemistry and Chemical Engineering, University of South China, Hengyang421001,P. R. China
| | - Wenjing Niu
- School of Chemistry and Chemical Engineering, University of South China, Hengyang421001,P. R. China
| | - Yongjun He
- School of Chemistry and Chemical Engineering, University of South China, Hengyang421001,P. R. China
| | - Yibo Wei
- School of Chemistry and Chemical Engineering, University of South China, Hengyang421001,P. R. China
| | - Xianxian Li
- School of Chemistry and Chemical Engineering, University of South China, Hengyang421001,P. R. China
| | - Ying-Wu Lin
- School of Chemistry and Chemical Engineering, University of South China, Hengyang421001,P. R. China
- Hengyang Medical College, University of South China, Hengyang 421001,P. R. China
- Laboratory of Protein Structure and Function, University of South China Medical School, Hengyang421001,P. R. China
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2
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Song Y, Wang LC, Du S, Chen Z, Wu XF. The cascade coupling/iodoaminocyclization reaction of trifluoroacetimidoyl chlorides and allylamines: metal-free access to 2-trifluoromethyl-imidazolines. Org Biomol Chem 2021; 19:6115-6119. [PMID: 34165110 DOI: 10.1039/d1ob00986a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A metal-free cascade coupling/iodoaminocyclization reaction for the rapid assembly of 2-trifluoromethyl-imidazolines has been disclosed. The transformation applies readily accessible trifluoroacetimidoyl chlorides, allylamines and N-iodosuccinimides as the starting substrates, achieving an efficient and straightforward pathway to construct diverse imidazoline derivatives. Excellent efficiency of the reaction is observed (higher than 90% isolated yield for half of the examples), and the obtained imidazoline products bearing a pendent iodomethyl group could be easily transformed into other synthetically valuable compounds.
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Affiliation(s)
- Yufei Song
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, China.
| | - Le-Cheng Wang
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, China.
| | - Shiying Du
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, China.
| | - Zhengkai Chen
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, China.
| | - Xiao-Feng Wu
- Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 116023, Dalian, Liaoning, China and Leibniz-Institut für Katalyse e. V. an der Universität Rostock, Albert-Einstein-Straβe 29a, 18059 Rostock, Germany.
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3
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Claraz A, Djian A, Masson G. Electrochemical tandem trifluoromethylation of allylamines/formal (3 + 2)-cycloaddition for the rapid access to CF3-containing imidazolines and oxazolidines. Org Chem Front 2021. [DOI: 10.1039/d0qo01307b] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A straightforward and environmentally friendly synthesis of CF3-containing imidazolines and oxazolidines has been developed through an electrochemical three-component reaction among allylamines, the Langlois reagent, and nitrile or carbonyl compounds.
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Affiliation(s)
- Aurélie Claraz
- Institut de Chimie des Substances Naturelles
- Université Paris Saclay
- CNRS
- UPR2301
- 91198 Gif-sur-Yvette cedex
| | - Aurélie Djian
- Institut de Chimie des Substances Naturelles
- Université Paris Saclay
- CNRS
- UPR2301
- 91198 Gif-sur-Yvette cedex
| | - Géraldine Masson
- Institut de Chimie des Substances Naturelles
- Université Paris Saclay
- CNRS
- UPR2301
- 91198 Gif-sur-Yvette cedex
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4
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Kumar S, Shah TA, Punniyamurthy T. Recent advances in the application of tetrabromomethane in organic synthesis. Org Chem Front 2021. [DOI: 10.1039/d0qo01369b] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
This review article covers the use of tetrabromomethane as mediator, catalyst and reagents for organic synthesis for the period from 2007 to 2020.
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Affiliation(s)
- Sandeep Kumar
- Department of Chemistry
- DAV University
- Jalandhar-144012
- India
| | - Tariq A. Shah
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Guwahati-781039
- India
- Department of Chemistry
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5
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Aneeja T, Radhika S, Neetha M, Anilkumar G. An Overview of the One-pot Synthesis of Imidazolines. CURR ORG CHEM 2020. [DOI: 10.2174/1385272824999201001153735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
One-pot syntheses are a simple, efficient and easy methodology, which are widely
used for the synthesis of organic compounds. Imidazoline is a valuable heterocyclic moiety
used as a synthetic intermediate, chiral auxiliary, chiral catalyst and a ligand for asymmetric
catalysis. Imidazole is a fundamental unit of biomolecules that can be easily prepared from
imidazolines. The one-pot method is an impressive approach to synthesize organic compounds
as it minimizes the reaction time, separation procedures, and ecological impact. Many significant
one-pot methods such as N-bromosuccinimide mediated reaction, ring-opening of tetrahydrofuran,
triflic anhydrate mediated reaction, etc. were reported for imidazoline synthesis.
This review describes an overview of the one-pot synthesis of imidazolines and covers literature
up to 2020.
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Affiliation(s)
- Thaipparambil Aneeja
- School of Chemical Sciences, Mahatma Gandhi University, Priyadarsini Hills P.O., Kottayam, Kerala, 686560, India
| | - Sankaran Radhika
- School of Chemical Sciences, Mahatma Gandhi University, Priyadarsini Hills P.O., Kottayam, Kerala, 686560, India
| | - Mohan Neetha
- School of Chemical Sciences, Mahatma Gandhi University, Priyadarsini Hills P.O., Kottayam, Kerala, 686560, India
| | - Gopinathan Anilkumar
- School of Chemical Sciences, Mahatma Gandhi University, Priyadarsini Hills P.O., Kottayam, Kerala, 686560, India
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6
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Affiliation(s)
| | - Jetze J. Tepe
- Department of Chemistry Michigan State University East Lansing Michigan 48823
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7
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Abstract
In this mini-review, the main synthetic routes used in the preparation of oxazolines is presented.
The review is systematically carried out and the syntheses are presented in terms of precursors
utilised (nitriles, aldehydes and carboxylic acids). Additionally, the reported synthesis of all chiral and
achiral oxazolines involve either the use of amino alcohols as essential building blocks or some form
of intramolecular cyclisation reactions. A comparison of the effectiveness of various reaction initiators
such as Lewis acids, bases, oxidants and metals as well as their respective reaction conditions is also
described. Lewis acid catalysts such as zinc chloride, zinc oxide and indium (III) chloride as well as
triflic acid and ruthenium complexes are presented as effective catalysts in the formation of oxazolines
from nitrile precursors. Oxidising agents such as N-bromosuccinimide, hypervalent iodine reagents
and reducing agents such as butyllithium have been used in the formation oxazolines from aldehydes.
While carboxylic acids have been used effectively as good precursors to oxazolines when
using reagents such as cyanuric chloride as well as transition metal containing catalysts such as copper,
ruthenium and titanium. In some cases, catalyst free reaction conditions have also been reported
offering substituted oxazolines through microwave and ultrasonic irradiation as well as under standard
reflux conditions.
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Affiliation(s)
- Ensar Mulahmetovic
- Centre for Research in Engineering Surface Technology (CREST), Focas Institute, Dublin Institute of Technology, Camden Row, Dublin 8, Ireland
| | - Gráinne C. Hargaden
- School of Chemical and Pharmaceutical Sciences, Dublin Institute of Technology, Kevin Street, Dublin 8, Ireland
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8
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Colella M, Musci P, Carlucci C, Lillini S, Tomassetti M, Aramini A, Degennaro L, Luisi R. 1,3-Dibromo-1,1-difluoro-2-propanone as a Useful Synthon for a Chemoselective Preparation of 4-Bromodifluoromethyl Thiazoles. ACS OMEGA 2018; 3:14841-14848. [PMID: 31458153 PMCID: PMC6644220 DOI: 10.1021/acsomega.8b02273] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Accepted: 10/22/2018] [Indexed: 06/10/2023]
Abstract
We report herein a synthetic protocol for the preparation of 1,3-dibromo-1,1-difluoro-2-propanone, a new synthon used for the first time in a reaction with aromatic amines and sodium thiocyanate, leading to thiazoles which are useful candidates in drug discovery programs. The new synthon allows to introduce a bromodifluoromethyl group at the C4 of the thiazole, and it is amenable of further transformation such as the Br/F exchange useful in radiopharmaceutics. Application of the strategy to the preparation of a precursor of the biologically relevant DF2755Y is also reported.
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Affiliation(s)
- Marco Colella
- Department
of Pharmacy—Drug Sciences, University
of Bari “A. Moro” Via E. Orabona 4, Bari 70125, Italy
| | - Pantaleo Musci
- Department
of Pharmacy—Drug Sciences, University
of Bari “A. Moro” Via E. Orabona 4, Bari 70125, Italy
| | - Claudia Carlucci
- Department
of Pharmacy—Drug Sciences, University
of Bari “A. Moro” Via E. Orabona 4, Bari 70125, Italy
| | - Samuele Lillini
- Department
of Discovery, Dompé Farmaceutici
S.p.A., Via Pietro Castellino, Napoli 80131, Italy
| | - Mara Tomassetti
- Department
of Discovery, Dompé Farmaceutici
S.p.A., Via Pietro Castellino, Napoli 80131, Italy
| | - Andrea Aramini
- Department
of Discovery, Dompé Farmaceutici
S.p.A., Via Campo di
Pile, L’Aquila 67100, Italy
- Department
of Discovery, Dompé Farmaceutici
S.p.A., Via Pietro Castellino, Napoli 80131, Italy
| | - Leonardo Degennaro
- Department
of Pharmacy—Drug Sciences, University
of Bari “A. Moro” Via E. Orabona 4, Bari 70125, Italy
| | - Renzo Luisi
- Department
of Pharmacy—Drug Sciences, University
of Bari “A. Moro” Via E. Orabona 4, Bari 70125, Italy
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9
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Krasavin M. N-(Hetero)aryl-2-imidazolines: an emerging privileged motif for contemporary drug design. Chem Heterocycl Compd (N Y) 2017. [DOI: 10.1007/s10593-017-2047-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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10
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Lin QY, Xu XH, Qing FL. Visible light-induced selective hydrobromodifluoromethylation of alkenes with dibromodifluoromethane. Org Biomol Chem 2015; 13:8740-9. [PMID: 26185911 DOI: 10.1039/c5ob01302j] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A visible light-induced selective hydrobromodifluoromethylation of alkenes using CF2Br2 was developed. This transformation proceeded smoothly in the presence of catalytic eosin Y at room temperature to give various hydrobromodifluoromethylated compounds with broad functional group tolerance.
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Affiliation(s)
- Qing-Yu Lin
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Science, Shanghai 200032, China.
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11
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Jiang H, Lu W, Yang K, Ma G, Xu M, Li J, Yao J, Wan W, Deng H, Wu S, Zhu S, Hao J. Enhancement of Neighbouring-Group Participation in Cu0-Promoted Cross-Couplinggem-Difluoromethylenation of Aryl/Alkenyl Halides with 1,3-Azolic Difluoromethyl Bromides. Chemistry 2014; 20:10084-92. [DOI: 10.1002/chem.201402205] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2014] [Indexed: 11/11/2022]
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12
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Li Y, Zhang L, Zhang L, Wu Y, Gong Y. Rhodium-Catalyzed Intramolecular Difluoromethylenative Dearomatization of Phenols. European J Org Chem 2013. [DOI: 10.1002/ejoc.201301225] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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13
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Jiang H, Yan L, Xu M, Lu W, Cai Y, Wan W, Yao J, Wu S, Zhu S, Hao J. Nucleophile-Dependent Regioselective Reaction of (S)-4-Benzyl-2-Fluoroalkyl-1,3-Oxazolines. J Org Chem 2013; 78:4261-9. [DOI: 10.1021/jo400073d] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Haizhen Jiang
- Department of Chemistry, Shanghai University, 99 Shangda Road, Shanghai 200444, People’s
Republic of China
- Key Laboratory
of Organofluorine
Chemistry, Shanghai Institute of
Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, People’s Republic of
China
| | - Liuming Yan
- Department of Chemistry, Shanghai University, 99 Shangda Road, Shanghai 200444, People’s
Republic of China
| | - Minjun Xu
- Department of Chemistry, Shanghai University, 99 Shangda Road, Shanghai 200444, People’s
Republic of China
| | - Wenjun Lu
- Department of Chemistry, Shanghai University, 99 Shangda Road, Shanghai 200444, People’s
Republic of China
| | - Yeshan Cai
- Department of Chemistry, Shanghai University, 99 Shangda Road, Shanghai 200444, People’s
Republic of China
| | - Wen Wan
- Department of Chemistry, Shanghai University, 99 Shangda Road, Shanghai 200444, People’s
Republic of China
| | - Jianhua Yao
- Key Laboratory
of Organofluorine
Chemistry, Shanghai Institute of
Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, People’s Republic of
China
| | - Shaoxiong Wu
- Emory NMR Research Center, Emory University, 201 Dowman Drive, Atlanta, Georgia, 30322,
United States
| | - Shizheng Zhu
- Key Laboratory
of Organofluorine
Chemistry, Shanghai Institute of
Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, People’s Republic of
China
| | - Jian Hao
- Department of Chemistry, Shanghai University, 99 Shangda Road, Shanghai 200444, People’s
Republic of China
- Key Laboratory
of Organofluorine
Chemistry, Shanghai Institute of
Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, People’s Republic of
China
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