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Teli YA, Reetu R, Chanu SA, Kant K, Keremane KS, Almeer R, Singh V, Malakar CC. HFIP-Mediated Dual C(Ar)-Alkylation Process Towards the Regioselective Synthesis of Triarylmethanes (TRAMs). Chem Asian J 2024; 19:e202400635. [PMID: 39109591 DOI: 10.1002/asia.202400635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2024] [Revised: 07/23/2024] [Accepted: 08/07/2024] [Indexed: 10/04/2024]
Abstract
The distinct roles of different chemical species are essential for the discovery of novel chemical transformations in organic synthesis. Here, we have designed a potential strategy for the synthesis of triarylmethanes (TRAMs) using the dual C(aryl)-alkylation process. This protocol was influenced by 1,1,1,3,3,3-hexafluoroisopropanol (HFIP) as a pivotal reagent and proceeds through the selective para C-H functionalization method. The described approach has been proven to be highly efficient in terms of substrate scope with excellent functional group tolerance and gram scale synthesis of the desired product with 90 % yield. The recyclability and reusability of HFIP has enhanced the feasibility of this protocol towards the sustainable synthesis of TRAMs.
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Affiliation(s)
- Yaqoob A Teli
- Department of Chemistry, National Institute of Technology Manipur, Imphal, 795004, India
| | - Reetu Reetu
- Department of Chemistry, National Institute of Technology Manipur, Imphal, 795004, India
| | - S Aleena Chanu
- Department of Chemistry, National Institute of Technology Manipur, Imphal, 795004, India
| | - Kamal Kant
- Department of Chemistry, National Institute of Technology Manipur, Imphal, 795004, India
| | - Kavya S Keremane
- Materials Research Institute, The Pennsylvania State University, University Park, PA, 16802, United States
| | - Rafa Almeer
- Department of Zoology, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Virender Singh
- Department of Chemistry, Central University of Punjab, Bathinda, Punjab, 151001, India
| | - Chandi C Malakar
- Department of Chemistry, National Institute of Technology Manipur, Imphal, 795004, India
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Lerch S, Fritsch S, Strassner T. Friedel-Crafts acylation of benzene derivatives in tunable aryl alkyl ionic liquids (TAAILs). Beilstein J Org Chem 2023; 19:212-216. [PMID: 36865025 PMCID: PMC9972882 DOI: 10.3762/bjoc.19.20] [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: 11/06/2022] [Accepted: 01/30/2023] [Indexed: 02/25/2023] Open
Abstract
An iron(III) chloride hexahydrate-catalyzed Friedel-Crafts acylation of benzene derivatives in tunable aryl alkyl ionic liquids (TAAILs) has been developed. Through optimization of the metal salt, reaction conditions and ionic liquids, we were able to design a robust catalyst system that tolerates different electron-rich substrates under ambient atmosphere and allows for a multigram scale.
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Affiliation(s)
- Swantje Lerch
- Professur für Physikalische Organische Chemie, Technische Universität Dresden, 01062 Dresden, Germany
| | - Stefan Fritsch
- Professur für Physikalische Organische Chemie, Technische Universität Dresden, 01062 Dresden, Germany
| | - Thomas Strassner
- Professur für Physikalische Organische Chemie, Technische Universität Dresden, 01062 Dresden, Germany
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Quintana AA, Sztapka AM, Santos Ebinuma VDC, Agatemor C. Enabling Sustainable Chemistry with Ionic Liquids and Deep Eutectic Solvents: A Fad or the Future? Angew Chem Int Ed Engl 2022; 61:e202205609. [PMID: 35789078 DOI: 10.1002/anie.202205609] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2022] [Indexed: 12/17/2022]
Abstract
Ionic liquids (ILs) and deep eutectic solvents (DESs) debuted with a promise of a superior sustainability footprint due to their low vapor pressure. However, their toxicity and high cost compromise this footprint, impeding their real-world applications. Fortunately, their property tunability through a rational selection of precursors, including bioderived ones, provides a strategy to ameliorate toxicity, lower cost, and endow new functions. This Review discusses whether ILs and DESs are sustainable solvents and how they contribute to sustainable chemical processes.
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Affiliation(s)
| | | | - Valéria de Carvalho Santos Ebinuma
- Department of Engineering of Bioprocesses and Biotechnology, School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, São Paulo, Brazil
| | - Christian Agatemor
- Department of Chemistry, University of Miami, Coral Gables, FL 33124, USA.,Sylvester Comprehensive Cancer Center, University of Miami, Miami, FL 33136, USA
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Agatemor C, Quintana AA, Sztapka LM, Ebinuma VDCS. Enabling Sustainable Chemistry with Ionic Liquids and Deep Eutectic Solvents: a Fad or the Future? Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202205609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Christian Agatemor
- University of Miami - Coral Gables Campus: University of Miami Chemistry 1301 Memorial Dr 33146 Coral Gables UNITED STATES
| | - Aline Andrea Quintana
- University of Miami - Coral Gables Campus: University of Miami Chemistry UNITED STATES
| | - Lani Maria Sztapka
- University of Miami - Coral Gables Campus: University of Miami Chemistry UNITED STATES
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Li W, Wang D, Liang X, Jin Z, Zhou S, Chen G, Pan Y. Lewis-Acid-Catalyzed Selective Friedel-Crafts Reaction or Annulation between Anilines and Glyoxylates. Org Lett 2022; 24:3086-3091. [PMID: 35435692 DOI: 10.1021/acs.orglett.2c01115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A Lewis-acid-catalyzed selective reaction between anilines and glyoxylates was developed for synthesis of diarylmethanes or oxoimidazolidines. Under the catalysis of AgOTf, a series of anilines-based diarylmethanes, including primary, secondary, and tertiary anilines, were obtained in moderate to good yields. Moreover, stereoselective oxoimidazolidines were performed with the catalysis of Cu(OAc)2·H2O.
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Affiliation(s)
- Wangyu Li
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Dungai Wang
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Xiao Liang
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Zhixiong Jin
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Shiwen Zhou
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Guanru Chen
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Yuanjiang Pan
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China
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Rinkam S, Senapak W, Watchasit S, Saeeng R, sirion U. Brönsted Acidic Ionic Liquid Catalyzed Three-Component Friedel-Crafts Reaction for the Synthesis of Unsymmetrical Triarylmethanes. Synlett 2022. [DOI: 10.1055/a-1809-7768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
convenient and practical methodology for the synthesis of unsymmetrical triarylmethanes was demonstrated through a one-pot three-component double Friedel-Craft reaction between various aliphatic aromatic and heteroaromatic aldehydes, N,N-dialkylanilines and indoles using Bronsted acidic ionic liquid as catalyst. This method was successfully performed under metal- and solvent-free conditions at 80oC, affording the corresponding unsymmetrical triarylmethane products in moderate to high yields with a broad range of substrates. In addition, the mechanistic proposal of this methodology was studied by using quantitative NMR analysis (qNMR).
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