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Arun V, Roy L, De Sarkar S. Alcohols as Fluoroalkyl Synthons: Ni-catalyzed Dehydrogenative Approach to Access Polyfluoroalkyl Bis-indoles. Chemistry 2020; 26:16649-16654. [PMID: 32914904 DOI: 10.1002/chem.202003912] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Indexed: 01/04/2023]
Abstract
An acceptorless dehydrogenative strategy for the synthesis of polyfluoroalkylated bis-indoles is described by employing an earth-abundant nickel-based catalytic system under air. The notable feature of the present transformation is the use of bench stable and easily affordable polyfluorinated alcohols without any pre-functionalization for the introduction of precious polyfluoroalkyl groups. The developed straightforward protocol accomplished biologically relevant fluoroalkyl bis-indoles in a sustainable fashion. Extensive DFT study predicts the unique role of indole molecules which stabilizes the transition states during the dehydrogenation process of polyfluorinated alcohols, presumably through non-covalent π⋅⋅⋅π and H-bonding interactions.
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Affiliation(s)
- V Arun
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, 741246, West Bengal, India
| | - Lisa Roy
- Institute of Chemical Technology Mumbai, IOC Odisha Campus Bhubaneswar, IIT Kharagpur Extension Centre, Bhubaneswar, 751013, India
| | - Suman De Sarkar
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, 741246, West Bengal, India
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Liu J, Yu D, Yang Y, You H, Sun M, Wang Y, Shen X, Liu ZQ. Free-Radical-Promoted Dehydrogenative Coupling of Polyfluorinated Alcohol with Quinone, Chromone, and Coumarin. Org Lett 2020; 22:4844-4847. [PMID: 32500708 DOI: 10.1021/acs.orglett.0c01671] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A free-radical-mediated dehydrogenative cross-coupling reaction of polyfluorinated alcohol with quinone, coumarin, and chromone was developed. It provides a sustainable and practical strategy for installation of fluorine atom into organic molecules by using polyfluorinated alcohols.
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Affiliation(s)
- Jingping Liu
- College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Dan Yu
- College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Yong Yang
- College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Huichao You
- College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Minzhi Sun
- College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Yaxin Wang
- College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Xu Shen
- College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Zhong-Quan Liu
- College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China
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Boualouache A, Boucenna A, Otmanine G. Interaction of intermediates with transition metal surfaces in the dehydrogenation of ethanol to ethyl acetate: A theoretical investigation. PROGRESS IN REACTION KINETICS AND MECHANISM 2019. [DOI: 10.1177/1468678319834831] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
By employing a combined approach of the unity bond index–quadratic exponential potential method and density functional theory within the generalized gradient approximation, we have studied the interaction of intermediates in the ethanol dehydrogenation process to ethyl acetate on Cu, Ag, Ni, Pd, Pt, Co, Au and Ir(111) transition metal surfaces. Binding energies and geometries were optimized for the main intermediates of this process. Electronic structures were computed for some intermediates/transition metal systems. We also calculated the activation energies for the elementary steps of the reactions. The results show that amid the studied surfaces, Cu(111) stabilizes ethoxy and acetyl species, preventing their dissociation. Inducing the η2 binding mode of acetaldehyde by alloying Cu with Ni, Co, Pd, Pt or Ir can enhance the catalytic proprieties of the Cu(111) clean surface.
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Affiliation(s)
- Adel Boualouache
- Laboratory of Hydrocarbons Technology, Department of Chemical and Pharmaceutical Processes Engineering, University of M’hamed Bougara, Boumerdes 35000, Algeria
| | - Ali Boucenna
- Laboratory of Hydrocarbons Technology, Department of Chemical and Pharmaceutical Processes Engineering, University of M’hamed Bougara, Boumerdes 35000, Algeria
| | - Ghazi Otmanine
- Laboratory of Hydrocarbons Technology, Department of Chemical and Pharmaceutical Processes Engineering, University of M’hamed Bougara, Boumerdes 35000, Algeria
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Xu Z, Hang Z, Chai L, Liu ZQ. A Free-Radical-Promoted Site-Specific Cross-Dehydrogenative-Coupling of N-Heterocycles with Fluorinated Alcohols. Org Lett 2016; 18:4662-5. [DOI: 10.1021/acs.orglett.6b02274] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zhengbao Xu
- State Key Laboratory of Applied
Organic Chemistry, Lanzhou University, Lanzhou 730000, P. R. China
| | - Zhaojia Hang
- State Key Laboratory of Applied
Organic Chemistry, Lanzhou University, Lanzhou 730000, P. R. China
| | - Li Chai
- State Key Laboratory of Applied
Organic Chemistry, Lanzhou University, Lanzhou 730000, P. R. China
| | - Zhong-Quan Liu
- State Key Laboratory of Applied
Organic Chemistry, Lanzhou University, Lanzhou 730000, P. R. China
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Xu Z, Hang Z, Liu ZQ. Free-Radical Triggered Ordered Domino Reaction: An Approach to C–C Bond Formation via Selective Functionalization of α-Hydroxyl-(sp3)C–H in Fluorinated Alcohols. Org Lett 2016; 18:4470-3. [DOI: 10.1021/acs.orglett.6b01946] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Zhengbao Xu
- State Key Laboratory of Applied
Organic Chemistry, Lanzhou University, Lanzhou 730000, P. R. China
| | - Zhaojia Hang
- State Key Laboratory of Applied
Organic Chemistry, Lanzhou University, Lanzhou 730000, P. R. China
| | - Zhong-Quan Liu
- State Key Laboratory of Applied
Organic Chemistry, Lanzhou University, Lanzhou 730000, P. R. China
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Sam B, Luong T, Krische MJ. Ruthenium-catalyzed C-C coupling of fluorinated alcohols with allenes: dehydrogenation at the energetic limit of β-hydride elimination. Angew Chem Int Ed Engl 2015; 54:5465-9. [PMID: 25757459 PMCID: PMC4405479 DOI: 10.1002/anie.201500238] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2015] [Indexed: 11/05/2022]
Abstract
Ruthenium(II) complexes catalyze the CC coupling of 1,1-disubstituted allenes and fluorinated alcohols to form homoallylic alcohols bearing all-carbon quaternary centers with good to complete levels of diastereoselectivity. Whereas fluorinated alcohols are relatively abundant and tractable, the corresponding aldehydes are often not commercially available because of their instability.
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Affiliation(s)
- Brannon Sam
- University of Texas at Austin, Department of Chemistry, 105 E 24th St. (A5300), Austin, TX 78712-1167 (USA)
| | - Tom Luong
- University of Texas at Austin, Department of Chemistry, 105 E 24th St. (A5300), Austin, TX 78712-1167 (USA)
| | - Michael J. Krische
- University of Texas at Austin, Department of Chemistry, 105 E 24th St. (A5300), Austin, TX 78712-1167 (USA)
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Sam B, Luong T, Krische MJ. Ruthenium-Catalyzed CC Coupling of Fluorinated Alcohols with Allenes: Dehydrogenation at the Energetic Limit of β-Hydride Elimination. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201500238] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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Radilla J, Boronat M, Corma A, Illas F. Monitoring the interaction of adsorbates on metal surfaces by surface site engineering: the case of ethoxy on Cu, Pd, Ag and Au regular and stepped surfaces. Phys Chem Chem Phys 2010; 12:6492-8. [DOI: 10.1039/c000405g] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Li X, Gellman AJ, Sholl DS. Density functional theory study of β-hydride elimination of ethyl on flat and stepped Cu surfaces. J Chem Phys 2007; 127:144710. [DOI: 10.1063/1.2786994] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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11
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Bhatia B, Sholl DS. Enantiospecific Chemisorption of Small Molecules on Intrinsically Chiral Cu Surfaces. Angew Chem Int Ed Engl 2005. [DOI: 10.1002/ange.200501655] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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12
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Bhatia B, Sholl DS. Enantiospecific Chemisorption of Small Molecules on Intrinsically Chiral Cu Surfaces. Angew Chem Int Ed Engl 2005; 44:7761-4. [PMID: 16278911 DOI: 10.1002/anie.200501655] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Bhawna Bhatia
- Department of Chemical Engineering, Carnegie Mellon University, Pittsburgh, PA 15213, USA
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