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Chen F, Zhao XX, Zhang HT, Ma YN, Chen X. Facile Friedel-Crafts alkylation of arenes under solvent-free conditions. Org Biomol Chem 2024; 22:2187-2191. [PMID: 38391292 DOI: 10.1039/d4ob00162a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2024]
Abstract
The Friedel-Crafts alkylation of arenes is an important part of electrophilic aromatic substitution reactions. However, the reactivity of arenes is weakened by electron-withdrawing substituents, leading to limited substrate scopes and applications. Herein, we developed an efficient HOTf-promoted Friedel-Crafts alkylation reaction of broad arenes with α-aryl-α-diazoesters under metal-free and solvent-free conditions.
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Affiliation(s)
- Feijing Chen
- College of Chemistry, Zhengzhou University, Zhengzhou, 450001, Henan, China.
| | - Xiao-Xiao Zhao
- College of Chemistry, Zhengzhou University, Zhengzhou, 450001, Henan, China.
| | - Hao-Tian Zhang
- College of Chemistry, Zhengzhou University, Zhengzhou, 450001, Henan, China.
| | - Yan-Na Ma
- College of Chemistry, Zhengzhou University, Zhengzhou, 450001, Henan, China.
| | - Xuenian Chen
- College of Chemistry, Zhengzhou University, Zhengzhou, 450001, Henan, China.
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2
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Palavong N, Jantrapirom J, Tummatorn J, Thongsornkleeb C, Ruchirawat S. Acid‐dependent Divergent Conversion of ortho‐Arylcyclopropanecarbonyl Carboxaldehydes for the Synthesis of Furanodibenzocycloheptenes and Dibenzocycloheptenes. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
| | | | - Jumreang Tummatorn
- Chulabhorn Research Institute Medicinal chemistry 54 Kamphaeng Phet 6 Talat Bang Khen 10210 Lak Si THAILAND
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3
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Chen CY, Zhao JH, Xiong LX, Wang F, Yang G, Ma C. Borane-catalyzed arylation of aryldiazoacetates with N, N-dialkylanilines. Org Biomol Chem 2022; 20:4101-4104. [PMID: 35537202 DOI: 10.1039/d2ob00447j] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A selective arylation of donor-acceptor diazo compounds with aniline derivatives catalyzed by Lewis acidic boranes is developed. This simple reaction protocol provides an efficient method for the synthesis of diarylacetates under metal-free conditions.
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Affiliation(s)
- Cheng-Yu Chen
- Hubei Collaborative Innovation Centre for Advanced Organic Chemical Materials, College of Chemistry and Chemical Engineering, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, Hubei University, Wuhan, 430062, P. R. China.
| | - Jing-Hao Zhao
- Hubei Collaborative Innovation Centre for Advanced Organic Chemical Materials, College of Chemistry and Chemical Engineering, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, Hubei University, Wuhan, 430062, P. R. China.
| | - Li-Xue Xiong
- Hubei Collaborative Innovation Centre for Advanced Organic Chemical Materials, College of Chemistry and Chemical Engineering, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, Hubei University, Wuhan, 430062, P. R. China.
| | - Feiyi Wang
- Hubei Collaborative Innovation Centre for Advanced Organic Chemical Materials, College of Chemistry and Chemical Engineering, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, Hubei University, Wuhan, 430062, P. R. China.
| | - Guichun Yang
- Hubei Collaborative Innovation Centre for Advanced Organic Chemical Materials, College of Chemistry and Chemical Engineering, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, Hubei University, Wuhan, 430062, P. R. China.
| | - Chao Ma
- Hubei Collaborative Innovation Centre for Advanced Organic Chemical Materials, College of Chemistry and Chemical Engineering, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, Hubei University, Wuhan, 430062, P. R. China.
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4
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Qu ZW, Zhu H, Grimme S. Acid‐Catalyzed Carbene Transfer from Diazo Compounds: Carbocation versus Carbene as Key Intermediate. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Zheng-Wang Qu
- University of Bonn: Rheinische Friedrich-Wilhelms-Universitat Bonn Mulliken Center for Theoretical Chemistry Beringstr. 4 D-53115 Bonn GERMANY
| | - Hui Zhu
- Universität Bonn: Rheinische Friedrich-Wilhelms-Universitat Bonn Mulliken Center for Theoretical Chemistry Bonn GERMANY
| | - Stefan Grimme
- Universität Bonn: Rheinische Friedrich-Wilhelms-Universitat Bonn Mulliken Center for Theoretical Chemistry Bonn GERMANY
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5
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Leveille AN, Echemendía R, Mattson AE, Burtoloso ACB. Enantioselective Indole Insertion Reactions of α-Carbonyl Sulfoxonium Ylides. Org Lett 2021; 23:9446-9450. [PMID: 34854689 DOI: 10.1021/acs.orglett.1c03627] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The first example of organocatalytic enantioselective C-H insertion reactions of indoles and sulfoxonium ylides is reported. Under the influence of phosphoric acid catalysis, levels of enantiocontrol in the range of 20-93% ee and moderate yields (up to 50%) were achieved for 29 examples in formal C-H insertion reactions of free indoles and α-carbonyl sulfoxonium ylides. No nitrogen protection on the indole is necessary.
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Affiliation(s)
- Alexandria N Leveille
- Department Chemistry and Biochemistry, Worcester Polytechnic Institute, 100 Institute Road, Worcester, Massachusetts 01609, United States
| | - Radell Echemendía
- Institute of Chemistry of São Carlos, University of São Paulo, CEP 13560-970 São Carlos, São Paulo, Brazil
| | - Anita E Mattson
- Department Chemistry and Biochemistry, Worcester Polytechnic Institute, 100 Institute Road, Worcester, Massachusetts 01609, United States
| | - Antonio C B Burtoloso
- Institute of Chemistry of São Carlos, University of São Paulo, CEP 13560-970 São Carlos, São Paulo, Brazil
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6
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He F, Empel C, Koenigs RM. Silver-Catalyzed N-H Functionalization of Aryl/Aryl Diazoalkanes with Anilines. Org Lett 2021; 23:6719-6723. [PMID: 34427449 DOI: 10.1021/acs.orglett.1c02289] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Herein, we report on the N-H functionalization reaction of primary and secondary anilines with diaryldiazoalkanes using simple AgPF6 as catalyst. We demonstrated broad applicability in the reaction of diaryldiazoalkanes with different anilines (31 examples, up to 97% yield). Furthermore, we propose a possible reaction mechanism for the N-H functionalization.
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Affiliation(s)
- Feifei He
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, D-52074 Aachen, Germany
| | - Claire Empel
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, D-52074 Aachen, Germany
| | - Rene M Koenigs
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, D-52074 Aachen, Germany
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