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Pd-catalyzed atom-efficient cross-coupling of triarylbismuth reagents with protecting group-free iodophenylmethanols: Synthesis of biarylmethanols. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.151676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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2
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Sha SC, Tcyrulnikov S, Li M, Hu B, Fu Y, Kozlowski MC, Walsh PJ. Cation-π Interactions in the Benzylic Arylation of Toluenes with Bimetallic Catalysts. J Am Chem Soc 2018; 140:12415-12423. [PMID: 30185030 PMCID: PMC6200331 DOI: 10.1021/jacs.8b05143] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A method to directly arylate toluene derivatives with aryl bromides to generate diarylmethanes, which are important building blocks in drug discovery, is described. In this method, KN(SiMe3)2 in combination with a (NIXANTPHOS)Pd catalyst accomplished the deprotonative activation of toluene derivatives to permit cross-coupling with aryl bromides. Good to excellent yields are obtained with a range of electron-rich to neutral aryl bromides. Both electron-rich and electron-poor toluene derivatives are well tolerated, and even 2-chlorotoluene performs well, providing a platform for introduction of additional functionalization. This discovery hinges on the use of a main group metal to activate toluene for deprotonation by means of a cation-π interaction, which is secured by a bimetallic K(NIXANTPHOS)Pd assembly. Mechanistic and computational studies support acidification of toluene derivatives by the K+-cation- π interaction, which may prove pertinent in the development of other, new reaction systems.
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Affiliation(s)
- Sheng-Chun Sha
- Department of Chemistry, Roy and Diana Vagelos Laboratories , University of Pennsylvania , Philadelphia , Pennsylvania 19104 , United States
| | - Sergei Tcyrulnikov
- Department of Chemistry, Roy and Diana Vagelos Laboratories , University of Pennsylvania , Philadelphia , Pennsylvania 19104 , United States
| | - Minyan Li
- Department of Chemistry, Roy and Diana Vagelos Laboratories , University of Pennsylvania , Philadelphia , Pennsylvania 19104 , United States
| | - Bowen Hu
- Department of Chemistry, Roy and Diana Vagelos Laboratories , University of Pennsylvania , Philadelphia , Pennsylvania 19104 , United States
| | - Yue Fu
- Department of Chemistry, Roy and Diana Vagelos Laboratories , University of Pennsylvania , Philadelphia , Pennsylvania 19104 , United States
| | - Marisa C Kozlowski
- Department of Chemistry, Roy and Diana Vagelos Laboratories , University of Pennsylvania , Philadelphia , Pennsylvania 19104 , United States
| | - Patrick J Walsh
- Department of Chemistry, Roy and Diana Vagelos Laboratories , University of Pennsylvania , Philadelphia , Pennsylvania 19104 , United States
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Pei MM, Liu P, Liu Y, Lv XM, Ma XW, Dai B. Pd-Catalyzed, Highly Selective C(sp²)-Br Bond Coupling Reactions of o-(or m-, or p-) Chloromethyl Bromobenzene with Arylboronic Acids. Molecules 2018; 23:molecules23020433. [PMID: 29462874 PMCID: PMC6017369 DOI: 10.3390/molecules23020433] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Revised: 02/13/2018] [Accepted: 02/13/2018] [Indexed: 11/16/2022] Open
Abstract
Highly selective C(sp2)–C(sp2) cross-coupling of dihalogenated hydrocarbons comprising C(sp2)–Br and C(sp3)–Cl bonds with arylboronic acids is reported. This highly selective coupling reaction of the C(sp2)–Br bond is successfully achieved using Pd(OAc)2 and PCy3·HBF4 as the palladium source and ligand, respectively. A series of chloromethyl-1,1′-biphenyl compounds are obtained in moderate-to-excellent yields. Moreover, this protocol can be extended to the one-pot dual arylation of 1-bromo-4-(chloromethyl)benzene with two arylboronic acids, leading to diverse unsymmetrical 4-benzyl-1,1′-biphenyl derivatives.
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Affiliation(s)
- Ming-Ming Pei
- School of Chemistry and Chemical Engineering/Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Shihezi University, Shihezi 832003, China.
| | - Ping Liu
- School of Chemistry and Chemical Engineering/Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Shihezi University, Shihezi 832003, China.
| | - Yan Liu
- School of Chemistry and Chemical Engineering/Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Shihezi University, Shihezi 832003, China.
| | - Xin-Ming Lv
- School of Chemistry and Chemical Engineering/Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Shihezi University, Shihezi 832003, China.
| | - Xiao-Wei Ma
- School of Chemistry and Chemical Engineering/Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Shihezi University, Shihezi 832003, China.
| | - Bin Dai
- School of Chemistry and Chemical Engineering/Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Shihezi University, Shihezi 832003, China.
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Catalytic cross-coupling reaction of aryl iodides with triarylbismuths by an N-heterocyclic carbene-PdCl2 based on benzo-9-crown-3 catalyst at room temperature. MOLECULAR CATALYSIS 2017. [DOI: 10.1016/j.mcat.2017.10.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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5
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Pal S, Chowdhury S, Rozwadowski E, Auffrant A, Gosmini C. Cobalt-Catalyzed Reductive Cross-Coupling Between Benzyl Chlorides and Aryl Halides. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201600378] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Suman Pal
- LCM, CNRS, Ecole polytechnique; Université Paris-Saclay; 91228 Palaiseau France
| | - Sushobhan Chowdhury
- LCM, CNRS, Ecole polytechnique; Université Paris-Saclay; 91228 Palaiseau France
| | - Elodie Rozwadowski
- LCM, CNRS, Ecole polytechnique; Université Paris-Saclay; 91228 Palaiseau France
| | - Audrey Auffrant
- LCM, CNRS, Ecole polytechnique; Université Paris-Saclay; 91228 Palaiseau France
| | - Corinne Gosmini
- LCM, CNRS, Ecole polytechnique; Université Paris-Saclay; 91228 Palaiseau France
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Bhardwaj M, Sharma H, Paul S, Clark JH. Fe3O4@SiO2/EDAC–Pd(0) as a novel and efficient inorganic/organic magnetic composite: sustainable catalyst for the benzylic C–H bond oxidation and reductive amination under mild conditions. NEW J CHEM 2016. [DOI: 10.1039/c5nj03413b] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Magnetically recyclable ethylene diamine functionalized inorganic/organic composite, Fe3O4@SiO2/EDAC–Pd(0) for selective C–H bond oxidation and reductive amination under sustainable reaction media.
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Affiliation(s)
- Madhvi Bhardwaj
- Department of Chemistry
- University of Jammu
- Jammu-180 006
- India
| | - Harsha Sharma
- Department of Chemistry
- University of Jammu
- Jammu-180 006
- India
| | - Satya Paul
- Department of Chemistry
- University of Jammu
- Jammu-180 006
- India
| | - James H. Clark
- Green Chemistry Centre of Excellence
- Department of Chemistry
- University of York
- York
- UK
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7
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Rao MLN, Dhanorkar RJ. Rapid threefold cross-couplings with sterically bulky triarylbismuths under Pd–Cu dual catalysis. RSC Adv 2016. [DOI: 10.1039/c5ra23311a] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
The threefold cross-coupling reactivity of sterically highly demanding bulky triarylbismuths was addressed with task specific Pd–Cu dual catalytic conditions.
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Affiliation(s)
- Maddali L. N. Rao
- Department of Chemistry
- Indian Institute of Technology Kanpur
- Kanpur
- India
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Singh MK, Lakshman MK. Diarylmethanes through an Unprecedented Palladium-Catalyzed C-C Cross-Coupling of 1-(Aryl)methoxy-1 H-Benzotriazoles with Arylboronic Acids. ChemCatChem 2015; 7:4156-4162. [PMID: 27134687 PMCID: PMC4847744 DOI: 10.1002/cctc.201500818] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2015] [Indexed: 11/09/2022]
Abstract
1-(Aryl)methoxy-1H-benzotriazoles (ArCH2OBt) are bench-stable reagents that are prepared readily from 1H-benzotriazol-1-yl-4-methylbenzenesulfonate (BtOTs) and benzylic alcohols. These compounds, which contain a N-O-C bond, undergo cross-coupling with arylboronic acids by C-O bond scission with catalysts that comprise Pd(OAc)2 and biarylphosphine ligands. Such reactivity of ArCH2OBt derivatives, leading to diarylmethanes, has not been described previously and constitutes a new activation of benzylic alcohols. With regard to the various ligands-metal complexes that support catalytic activity, it appears that those with smaller "percent buried volumes" (%Vbur) provide better outcomes. This factor has been evaluated in the initial optimization studies and in further reactions with difficult coupling partners. Ligand electronics of the biaryl moiety seem to play a lesser role in this type of reaction. The bis-coordinating bis[(2-diphenylphosphino)phenyl]ether appears to be suitable to improve the yields of low-yielding reactions.
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Affiliation(s)
- Manish K Singh
- Department of Chemistry, The City College and The City University of New York, 160 Convent Avenue, New York, NY 10031
| | - Mahesh K Lakshman
- Department of Chemistry, The City College and The City University of New York, 160 Convent Avenue, New York, NY 10031
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Ackerman LKG, Anka-Lufford LL, Naodovic M, Weix DJ. Cobalt co-catalysis for cross-electrophile coupling: diarylmethanes from benzyl mesylates and aryl halides. Chem Sci 2015; 6:1115-1119. [PMID: 25685312 PMCID: PMC4323094 DOI: 10.1039/c4sc03106g] [Citation(s) in RCA: 162] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2014] [Accepted: 11/07/2014] [Indexed: 12/24/2022] Open
Abstract
The nickel-catalyzed cross-coupling of aryl halides with alkyl radicals derived from alkyl halides has recently been extended to couplings with carbon radicals generated by a co-catalyst. In this study, a new co-catalyst, cobalt phthalocyanine (Co(Pc)), is introduced and demonstrated to be effective for coupling substrates not prone to homolysis. This is because Co(Pc) reacts with electrophiles by an SN2 mechanism instead of by the electron-transfer or halogen abstraction mechanisms previously explored. Studies demonstrating the orthogonal reactivity of (bpy)Ni and Co(Pc), applying this selectivity to the coupling of benzyl mesylates with aryl halides, and the adaptation of these conditions to the less reactive benzyl phosphate ester and an enantioconvergent reaction are presented.
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Affiliation(s)
- Laura K. G. Ackerman
- Department of Chemistry , University of Rochester , Rochester , NY 14627-0216 , USA .
| | | | - Marina Naodovic
- Department of Chemistry , University of Rochester , Rochester , NY 14627-0216 , USA .
| | - Daniel J. Weix
- Department of Chemistry , University of Rochester , Rochester , NY 14627-0216 , USA .
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Rao MLN, Dhanorkar RJ. Atom-economic threefold cross-couplings of triarylbismuth reagents with 2-halobenzaldehydes and pot-economic in situ Wittig functionalizations with phosphonium salts. RSC Adv 2014. [DOI: 10.1039/c4ra13348j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Rao ML, Kumar A. Pd-catalyzed chemo-selective mono-arylations and bis-arylations of functionalized 4-chlorocoumarins with triarylbismuths as threefold arylating reagents. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.07.059] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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Rao MLN, Dhanorkar RJ. Triarylbismuthanes as Threefold Aryl-Transfer Reagents in Regioselective Cross-Coupling Reactions with Bromopyridines and Quinolines. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402455] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Rao MLN, Dhanorkar RJ. Threefold and chemoselective couplings of triarylbismuths with benzylic chlorides and iodides using palladium catalysis. RSC Adv 2014. [DOI: 10.1039/c3ra46672h] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Shimada S. Recent Advances in Organic Syntheses Using Organobismuth Compounds. J SYN ORG CHEM JPN 2014. [DOI: 10.5059/yukigoseikyokaishi.72.1032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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