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Ramos‐Martín M, García‐Álvarez J, Soto AP. Access to Substituted 1,1-Diarylalkanes by Friedel-Crafts Benzylations Mediated by FeCl 3-based Deep Eutectic Solvents. CHEMSUSCHEM 2025; 18:e202400892. [PMID: 39052527 PMCID: PMC11739837 DOI: 10.1002/cssc.202400892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2024] [Revised: 07/05/2024] [Accepted: 07/25/2024] [Indexed: 07/27/2024]
Abstract
The development of new, more efficient Friedel-Crafts benzylation methodologies that provide access to 1,1-diarylalkanes is an important objective of interest for the production of pharmaceuticals and fine chemical products. In this regard, this study introduces a novel synthetic route to 1,1-diarylalkanes conducted in the Deep Eutectic Solvent (DES) 3 FeCl3 ⋅ 6 H2O/Gly, which serves as both a reaction medium and promoter. Under these conditions, Friedel-Crafts benzylations of various arenes bearing activating and deactivating ortho-/para-directing groups, can be performed using diverse benzylating reagents such as styrenes, alcohols, acetates, ethers, and chlorides. Importantly, highly electronically deactivated electrophiles, including those with CF3 and NO2 groups, are suitable substrates. This methodology provides a wide range of asymmetric 1,1-diarylalkanes (up to 132 examples) with generally good yields and high regioselectivities. The efficiency of this approach was demonstrated with the multigram-scale synthesis (10 mmol) of 1-phenyl-1-xylyl ethane (PXE), a liquid with great industrial applicability. Moreover, the Fe(III)-based DES could be reused for 20 consecutive cycles with no appreciable erosion of the yields.
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Affiliation(s)
- Marina Ramos‐Martín
- Laboratorio de Química Sintética Sostenible (QuimSinSos)Departamento de Química Orgánica e Inorgánica (IUQOEM)Centro de Innovación en Química Avanzada (ORFEO-CINQA)Facultad de QuímicaUniversidad de OviedoE-33006OviedoSpain
| | - Joaquín García‐Álvarez
- Laboratorio de Química Sintética Sostenible (QuimSinSos)Departamento de Química Orgánica e Inorgánica (IUQOEM)Centro de Innovación en Química Avanzada (ORFEO-CINQA)Facultad de QuímicaUniversidad de OviedoE-33006OviedoSpain
| | - Alejandro Presa Soto
- Laboratorio de Química Sintética Sostenible (QuimSinSos)Departamento de Química Orgánica e Inorgánica (IUQOEM)Centro de Innovación en Química Avanzada (ORFEO-CINQA)Facultad de QuímicaUniversidad de OviedoE-33006OviedoSpain
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2
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Zhao Z, Pang Y, Zhao Z, Zhou PP, Wang Y. Supramolecular catalysis with ethers enabled by dual chalcogen bonding activation. Nat Commun 2023; 14:6347. [PMID: 37816750 PMCID: PMC10564790 DOI: 10.1038/s41467-023-42129-1] [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: 01/30/2023] [Accepted: 09/29/2023] [Indexed: 10/12/2023] Open
Abstract
The activation of ethers by weak interactions is a long-standing objective in supramolecular catalysis, but yet it remains an underdeveloped topic. The obstacles towards solving this problem are prominent since it is difficult for a weak interaction to cleave a relatively strong C-O σ-bond and moreover, the ionic intermediate composing of an alkoxide ion and an electrophilic carbocation would deactivate weak interaction donors. Herein, we describe a distinctive activation mode, dual Se···π and Se···O bonding, that could activate benzylic as well as allylic ether C-O σ-bonds to achieve cyclization, coupling and elimination reactions. This dual Se···π and Se···O bonding catalysis approach could tolerate various alkoxide leaving groups, while the other representative weak interaction donors showed no catalytic activity.
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Affiliation(s)
- Zhiguo Zhao
- School of Chemistry and Chemical Engineering, Key Laboratory of the Colloid and Interface Chemistry of the Ministry of Education, Shandong University, Jinan, 250100, China
| | - Yuanling Pang
- School of Chemistry and Chemical Engineering, Key Laboratory of the Colloid and Interface Chemistry of the Ministry of Education, Shandong University, Jinan, 250100, China
| | - Ziqiang Zhao
- School of Chemistry and Chemical Engineering, Key Laboratory of the Colloid and Interface Chemistry of the Ministry of Education, Shandong University, Jinan, 250100, China
| | - Pan-Pan Zhou
- College of Chemistry and Chemical Engineering, Key Laboratory of Special Function Materials and Structure Design of Ministry of Education, Lanzhou University, Lanzhou, 730000, China
| | - Yao Wang
- School of Chemistry and Chemical Engineering, Key Laboratory of the Colloid and Interface Chemistry of the Ministry of Education, Shandong University, Jinan, 250100, China.
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3
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Du X, Zhang C, Liu S. Radical-Friedel-Crafts benzylation of arenes with benzyl ethers over 2H-MoS 2: ether cleavage into carbon- and oxygen-centered radicals. Dalton Trans 2022; 51:15322-15329. [PMID: 36102605 DOI: 10.1039/d2dt02801h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The selective activation of C-O ether bonds is an essential tool in organic synthesis and natural polymer depolymerization. However, the direct cleavage of the ether bond is still challenging work, especially breaking this inert and redox-neutral bond to provide one active carbon radical and another oxygen-centered fragment with oxidation capacity that can participate in the controllable radical reaction. We herein report that commercial 2H-MoS2 with negligible acidity can efficiently catalyze the benzylation of arenes with benzyl ethers, and a new Radical-Friedel-Crafts mechanism is proposed, which is quite different from the strong acid-catalyzed Friedel-Crafts mechanism. With dibenzyl ether as the model benzylation reagent, 2H-MoS2 can achieve the homolytic cleavage of the Bn-OR bond to generate the benzyl carbon radical and RO˙ species, identified by EPR measurement and radical trap experiments. The following radical-involved benzylation is confirmed by the Hammett results and a plausible pathway is proposed to clarify the Radical-Friedel-Crafts process. Heterogeneous 2H-MoS2 can be consecutively used four times without regeneration and it offers 94-95% yields of 2-benzyl-1,4-dimethylbenzene from dibenzyl ether and p-xylene in 30 min at 140 °C. Furthermore, this mechanism can provide some inspiration to activate the ether bond and to utilize ether as an oxidant in C-H bond activation.
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Affiliation(s)
- Xinze Du
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Chaofeng Zhang
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.,College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing 210037, China.
| | - Shenglin Liu
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
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4
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Chen X, Zhang Z, Yuan B, Yu F, Xie C, Yu S. Lignin-based sulfonated carbon as an efficient biomass catalyst for clean benzylation of benzene ring compounds. J IND ENG CHEM 2022. [DOI: 10.1016/j.jiec.2022.04.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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5
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Pallikonda G, Chakravarty M. Benzylic Phosphates in Friedel–Crafts Reactions with Activated and Unactivated Arenes: Access to Polyarylated Alkanes. J Org Chem 2016; 81:2135-42. [DOI: 10.1021/acs.joc.5b02441] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Gangaram Pallikonda
- Department of Chemistry, Birla Institute of Technology and Sciences, Pilani Hyderabad Campus, Jawahar
nagar, Shameerpet Mandal, Hyderabad, Telangana 500078, India
| | - Manab Chakravarty
- Department of Chemistry, Birla Institute of Technology and Sciences, Pilani Hyderabad Campus, Jawahar
nagar, Shameerpet Mandal, Hyderabad, Telangana 500078, India
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6
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Novel and highly efficient one pot protocol for the synthesis of diversely functionalized triarylmethanes. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2014.11.139] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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7
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Das D, Mohapatra SS, Roy S. Recent advances in heterobimetallic catalysis across a “transition metal–tin” motif. Chem Soc Rev 2015; 44:3666-90. [DOI: 10.1039/c4cs00523f] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
This review focuses on the efficacy of catalysts, based on a transition metal–tin (TM–Sn) motif and crafted on a single scaffold, in mediating a wide variety of organic transformations.
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Affiliation(s)
- Debjit Das
- Centre for Applied Chemistry
- Central University of Jharkhand
- Ranchi-835205
- India
| | - Swapna Sarita Mohapatra
- Organometallics & Catalysis Laboratory
- School of Basic Sciences
- Indian Institute of Technology
- Bhubaneswar-751013
- India
| | - Sujit Roy
- Organometallics & Catalysis Laboratory
- School of Basic Sciences
- Indian Institute of Technology
- Bhubaneswar-751013
- India
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Maity AK, Bhattacharjee M, Roy S. SnCl2 insertion into Ir–Cl and Rh–Cl bonds: Synthesis, characterization and catalytic activity of three-legged piano-stool trichlorostannyl iridium and rhodium complexes. J Organomet Chem 2014. [DOI: 10.1016/j.jorganchem.2014.06.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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9
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Uchuskin MG, Makarov AS, Butin AV. Catalytic Alkylation of Furans by π-Activated Alcohols (Review). Chem Heterocycl Compd (N Y) 2014. [DOI: 10.1007/s10593-014-1534-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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10
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Green synthesis and anti-inflammatory studies of a series of 1,1-bis(heteroaryl)alkane derivatives. Eur J Med Chem 2014; 83:561-8. [DOI: 10.1016/j.ejmech.2014.06.045] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2014] [Revised: 06/11/2014] [Accepted: 06/23/2014] [Indexed: 11/20/2022]
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11
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Sawama Y, Shishido Y, Kawajiri T, Goto R, Monguchi Y, Sajiki H. Iron-Catalyzed Friedel-Crafts Benzylation with Benzyl TMS Ethers at Room Temperature. Chemistry 2013; 20:510-6. [DOI: 10.1002/chem.201302862] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2013] [Indexed: 11/07/2022]
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12
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Shimada K, Higashi T, Gong Y, Aoyagi S, Takikawa Y, Ogawa S. SnCl4-Induced Unsymmetrical Cleavage of Bis(N,N-diethylcarbamoyltelluro)-arylmethanes: Generation of Tellurobenzaldehydes. HETEROATOM CHEMISTRY 2013. [DOI: 10.1002/hc.21115] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Kazuaki Shimada
- Department of Chemistry and Bioengineering; Faculty of Engineering; Iwate University; Morioka Iwate 020-8551 Japan
| | - Takumi Higashi
- Department of Chemistry and Bioengineering; Faculty of Engineering; Iwate University; Morioka Iwate 020-8551 Japan
| | - Yaling Gong
- Department of Chemistry and Bioengineering; Faculty of Engineering; Iwate University; Morioka Iwate 020-8551 Japan
| | - Shigenobu Aoyagi
- Department of Chemistry and Bioengineering; Faculty of Engineering; Iwate University; Morioka Iwate 020-8551 Japan
| | - Yuji Takikawa
- Department of Chemistry and Bioengineering; Faculty of Engineering; Iwate University; Morioka Iwate 020-8551 Japan
| | - Satoshi Ogawa
- Department of Chemistry and Bioengineering; Faculty of Engineering; Iwate University; Morioka Iwate 020-8551 Japan
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14
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Kupracz L, Kirschning A. Two-Step Flow Synthesis of Biarylmethanes by Reductive Arylation of Tosylhydrazones. J Flow Chem 2013. [DOI: 10.1556/jfc-d-12-00021] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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15
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Dhiman S, Ramasastry SSV. Di- and triheteroarylalkanes via self-condensation and intramolecular Friedel–Crafts type reaction of heteroaryl alcohols. Org Biomol Chem 2013; 11:8030-5. [DOI: 10.1039/c3ob41945b] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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16
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Multimetallic Ir–Sn3-catalyzed substitution reaction of π-activated alcohols with carbon and heteroatom nucleophiles. Tetrahedron 2013. [DOI: 10.1016/j.tet.2012.10.086] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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17
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Khodaei MM, Nazari E. Synthesis of diarylmethanes via a Friedel–Crafts benzylation using arenes and benzyl alcohols in the presence of triphenylphosphine ditriflate. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.07.051] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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18
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Allylic activation across an Ir–Sn heterobimetallic catalyst: nucleophilic substitution and disproportionation of allylic alcohol. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.02.054] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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19
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Czeluśniak I, Jachimowska M, Szymańska-Buzar T. Stannylation of unsaturated carbon–carbon bonds by tin tetrachloride. J Organomet Chem 2011. [DOI: 10.1016/j.jorganchem.2011.06.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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20
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Tin exchanged heteropoly tungstate: An efficient catalyst for benzylation of arenes with benzyl alcohol. ACTA ACUST UNITED AC 2011. [DOI: 10.1016/j.molcata.2011.01.008] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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21
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Bera M, Pratihar S, Roy S. Ag(I)-Catalyzed Regioselective Ring-Opening of N-Tosylaziridine and N-Tosylazetidine with S-, O-, and N-Nucleophiles and Tethered Dinucleophiles. J Org Chem 2011; 76:1475-8. [DOI: 10.1021/jo102285z] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Milan Bera
- Organometallics & Catalysis Laboratory, Chemistry Department, Indian Institute of Technology, Kharagpur 721302, India
| | - Sanjay Pratihar
- Organometallics & Catalysis Laboratory, Chemistry Department, Indian Institute of Technology, Kharagpur 721302, India
| | - Sujit Roy
- Organometallics & Catalysis Laboratory, Chemistry Department, Indian Institute of Technology, Kharagpur 721302, India
- School of Basic Science, Indian Institute of Technology, Bhubaneswar 751013, India
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22
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Pratihar S, Roy S. Nucleophilicity and site selectivity of commonly used arenes and heteroarenes. J Org Chem 2010; 75:4957-63. [PMID: 20670024 DOI: 10.1021/jo100425a] [Citation(s) in RCA: 83] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
By using the inverse concept of electrophilicity and nucleophilicity and with four different available equations from literature for electrophilicity and electrodonating power, the nucleophilicity values of 69 commonly used arenes and heteroarenes have been calculated at the B3LYP/6-311+G(d,p) level of theory. The linearity between the nucleophilicity and Hammett sigma and sigma(p) values has been chosen as a test to judge the goodness of the methods used. Finally four different arene and heteroarene series (substituted indoles, phenols, pyrroles, and anisoles) have been subjected to local nucleophilicity analysis in order to predict the site selectivity in electrophilic aromatic substitution reactions (EAS). In each case we have obtained excellent correlation with the experimental result.
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Affiliation(s)
- Sanjay Pratihar
- Organometallics & Catalysis Laboratory, Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, India
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Chen CR, Zhou S, Biradar DB, Gau HM. Extremely Efficient Cross-Coupling of Benzylic Halides with Aryltitanium Tris(isopropoxide) Catalyzed by Low Loadings of a Simple Palladium(II) Acetate/Tris(p-tolyl)phosphine System. Adv Synth Catal 2010. [DOI: 10.1002/adsc.201000311] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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24
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Bera M, Roy S. Silver(I)−Diene Complexes as Versatile Catalysts for the C-Arylation of N-Tosylaziridines: Mechanistic Insight from In Situ Diagnostics. J Org Chem 2010; 75:4402-12. [DOI: 10.1021/jo100260k] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Milan Bera
- Organometallics & Catalysis Laboratory, Chemistry Department, Indian Institute of Technology, Kharagpur 721302, India
| | - Sujit Roy
- Organometallics & Catalysis Laboratory, Chemistry Department, Indian Institute of Technology, Kharagpur 721302, India
- Organometallics & Catalysis Laboratory, School of Basic Sciences, Indian Institute of Technology, Bhubaneswar 751013, India
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Jaratjaroonphong J, Sathalalai S, Techasauvapak P, Reutrakul V. Iodine-catalyzed Friedel–Crafts alkylation of electron-rich arenes with aldehydes: efficient synthesis of triarylmethanes and diarylalkanes. Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2009.08.036] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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26
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Bera M, Roy S. Silver(I)-Catalyzed Dual Activation of Propargylic Alcohol and Aziridine/Azetidine: Triggering Ring-Opening and Endo-Selective Ring-Closing in a Cascade. J Org Chem 2009; 74:8814-7. [DOI: 10.1021/jo901877f] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Milan Bera
- Organometallics & Catalysis Laboratory, Chemistry Department, Indian Institute of Technology, Kharagpur 721302, India
| | - Sujit Roy
- Organometallics & Catalysis Laboratory, Chemistry Department, Indian Institute of Technology, Kharagpur 721302, India
- Organometallics & Catalysis Laboratory, School of Basic Sciences, Indian Institute of Technology, Bhubaneswar 751013, India
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Prades A, Corberán R, Poyatos M, Peris E. A Simple Catalyst for the Efficient Benzylation of Arenes by Using Alcohols, Ethers, Styrenes, Aldehydes, or Ketones. Chemistry 2009; 15:4610-3. [DOI: 10.1002/chem.200802740] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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28
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Yamamoto Y, Itonaga K. Versatile Friedel-Crafts-type alkylation of benzene derivatives using a molybdenum complex/ortho-chloranil catalytic system. Chemistry 2008; 14:10705-15. [PMID: 18956395 DOI: 10.1002/chem.200801105] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
A variety of molybdenum complexes catalyze Friedel-Crafts-type alkylation reactions of benzene derivatives with alkenes and alcohols in the presence of an organic oxidant, o-chloranil. The utilization of [Mo(CO)(6)] and two equivalents of o-chloranil catalytically furnished the hydroarylation product of norbornene with p-xylene at 80 degrees C, whereas [Cr(CO)(6)] and [W(CO)(6)] failed to catalyze the same reaction, thus indicating the importance of the molybdenum source. The best results were obtained when a molybdenum(II) complex [CpMoCl(CO)(3)] (Cp=cyclopentadienyl) was used as a precatalyst. The hydroarylation reactions also took place with styrenes, cyclohexenes, and 1-hexene as olefin substrates. The electrophilic-substitution mechanism was proposed on the basis of the ortho/para selectivities and the Markovnikov selectivities observed for the hydroarylation products. Our hypothesis was further corroborated by the fact that in the presence of the [CpMoCl(CO)(3)]/o-chloranil catalytic system, secondary, benzylic, or allylic alcohols participated in the alkylation of benzenes with similar selectivities.
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Affiliation(s)
- Yoshihiko Yamamoto
- Department of Applied Chemistry, Graduate School of Science and Engineering, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo 152-8552, Japan.
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30
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Ir/Sn dual-reagent catalysis towards highly selective alkylation of arenes and heteroarenes with benzyl alcohols. J CHEM SCI 2008. [DOI: 10.1007/s12039-008-0068-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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31
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Kirchmann M, Fleischhauer S, Wesemann L. Iridium Coordination Compounds of Stanna-closo-dodecaborate. Organometallics 2008. [DOI: 10.1021/om8001679] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Marius Kirchmann
- Institut für Anorganische Chemie, Universität Tübingen, Auf der Morgenstelle 18, D-72076 Tübingen, Germany
| | - Sebastian Fleischhauer
- Institut für Anorganische Chemie, Universität Tübingen, Auf der Morgenstelle 18, D-72076 Tübingen, Germany
| | - Lars Wesemann
- Institut für Anorganische Chemie, Universität Tübingen, Auf der Morgenstelle 18, D-72076 Tübingen, Germany
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Kilian M, Wadepohl H, Gade LH. Triamidostannates(II) as Sterically Demanding Ligands for Rhodium and Iridium. Organometallics 2008. [DOI: 10.1021/om700960p] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Michaela Kilian
- Anorganisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - Hubert Wadepohl
- Anorganisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - Lutz H. Gade
- Anorganisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
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Generation of Ir–Sn and Rh–Sn bonds from the oxidative addition of tin(IV) halides to [Ir(μ-Cl)(1,5-COD)]2 and [Rh(μ-Cl)(1,5-COD)]2. J Organomet Chem 2007. [DOI: 10.1016/j.jorganchem.2007.09.016] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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