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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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Brufani G, Di Erasmo B, Li CJ, Vaccaro L. Csp 2-H functionalization of phenols: an effective access route to valuable materials via Csp 2-C bond formation. Chem Sci 2024; 15:3831-3871. [PMID: 38487228 PMCID: PMC10935747 DOI: 10.1039/d4sc00687a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Accepted: 02/02/2024] [Indexed: 03/17/2024] Open
Abstract
In the vast majority of top-selling pharmaceutical and industrial products, phenolic structural motifs are highly prevalent. Non-functionalized simple phenols serve as building blocks in the synthesis of value-added chemicals. It is worth mentioning that lignin, being the largest renewable biomass source of aromatic building blocks in nature, mainly consists of phenolic units, which enable the production of structurally diverse phenols. Given their remarkable applicability in the chemical value chain, many efforts have been devoted to increasing the molecular complexity of the phenolic scaffold. Among the key techniques, direct functionalization of Csp2-H is a powerful tool, enabling the construction of new Csp2-C bonds in an economical and atomic manner. Herein we present and summarize the large plethora of direct Csp2-H functionalization methods that enables scaffold diversification of simple, unprotected phenols, leading to the formation of new Csp2-C bonds. In this review article, we intend to summarize the contributions that appeared in the literature mainly in the last 5 years dealing with the functionalization of unprotected phenols, both catalytic and non-catalytic. Our goal is to highlight the key findings and the ongoing challenges in the stimulating and growing research dedicated to the development of new protocols for the valorization of phenols.
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Affiliation(s)
- Giulia Brufani
- Laboratory of Green S.O.C., Dipartimento di Chimica, Biologia e Biotecnologie, Università degli Studi di Perugia Via Elce di Sotto 8 06123 Perugia Italy https://greensoc.chm.unipg.it
| | - Benedetta Di Erasmo
- Laboratory of Green S.O.C., Dipartimento di Chimica, Biologia e Biotecnologie, Università degli Studi di Perugia Via Elce di Sotto 8 06123 Perugia Italy https://greensoc.chm.unipg.it
- Department of Chemistry, FRQNT Centre for Green Chemistry and Catalysis, McGill University 801 Sherbrooke Street West Montreal QC H3A0B8 Canada
| | - Chao-Jun Li
- Department of Chemistry, FRQNT Centre for Green Chemistry and Catalysis, McGill University 801 Sherbrooke Street West Montreal QC H3A0B8 Canada
| | - Luigi Vaccaro
- Laboratory of Green S.O.C., Dipartimento di Chimica, Biologia e Biotecnologie, Università degli Studi di Perugia Via Elce di Sotto 8 06123 Perugia Italy https://greensoc.chm.unipg.it
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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: 2.5] [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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Huang G, Fang Y, Ni S, Li M, Dang L. Theoretical Study on NHC−Ag(I)/Au(I) Catalyzed Mobius Versus Wagner‐Meerwein Rearrangements of 2‐Methyl‐N‐methoxyaniline. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100456] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Guanglong Huang
- Department of Chemistry Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province Shantou University Guangdong 515063 P. R. China
| | - Yu‐Qi Fang
- Department of Chemistry Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province Shantou University Guangdong 515063 P. R. China
| | - Shao‐Fei Ni
- Department of Chemistry Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province Shantou University Guangdong 515063 P. R. China
| | - Ming‐De Li
- Department of Chemistry Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province Shantou University Guangdong 515063 P. R. China
| | - Li Dang
- Department of Chemistry Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province Shantou University Guangdong 515063 P. R. China
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5
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Abstract
In this contribution, we provide an overview of the main avenues that have emerged in gold coordination chemistry during the last years. The unique properties of gold have motivated research in gold chemistry, and especially regarding the properties and applications of gold compounds in catalysis, medicine, and materials chemistry. The advances in the synthesis and knowledge of gold coordination compounds have been possible with the design of novel ligands becoming relevant motifs that have allowed the preparation of elusive complexes in this area of research. Strong donor ligands with easily modulable electronic and steric properties, such as stable singlet carbenes or cyclometalated ligands, have been decisive in the stabilization of gold(0) species, gold fluoride complexes, gold hydrides, unprecedented π complexes, or cluster derivatives. These new ligands have been important not only from the fundamental structure and bonding studies but also for the synthesis of sophisticated catalysts to improve activity and selectivity of organic transformations. Moreover, they have enabled the facile oxidative addition from gold(I) to gold(III) and the design of a plethora of complexes with specific properties.
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Affiliation(s)
- Raquel P Herrera
- Laboratorio de Organocatálisis Asimétrica Departamento de Química Orgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, 50009 Zaragoza, Spain
| | - M Concepción Gimeno
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, 50009 Zaragoza, Spain
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Hu S, Wu J, Lu Z, Wang J, Tao Y, Jiang M, Chen F. Time‐Economical Synthesis of Diarylacetates Enabled by TfOH‐Catalyzed Arylation of
α
‐Aryl‐
α
‐Diazoesters with Arenes. ChemCatChem 2021. [DOI: 10.1002/cctc.202100271] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Sha Hu
- Engineering Center of Catalysis and Synthesis for Chiral Molecules Department of Chemistry Fudan University 200433 Shanghai P. R. China
- Shanghai Engineering Center of Industrial Catalysis for Chiral Drugs 200433 Shanghai P. R. China
| | - Jiale Wu
- Engineering Center of Catalysis and Synthesis for Chiral Molecules Department of Chemistry Fudan University 200433 Shanghai P. R. China
- Shanghai Engineering Center of Industrial Catalysis for Chiral Drugs 200433 Shanghai P. R. China
| | - Zuolin Lu
- Institute of Pharmaceutical Science and Technology Zhejiang University of Technology 310014 Hangzhou P. R. China
| | - Jiaqi Wang
- Engineering Center of Catalysis and Synthesis for Chiral Molecules Department of Chemistry Fudan University 200433 Shanghai P. R. China
- Shanghai Engineering Center of Industrial Catalysis for Chiral Drugs 200433 Shanghai P. R. China
| | - Yuan Tao
- Engineering Center of Catalysis and Synthesis for Chiral Molecules Department of Chemistry Fudan University 200433 Shanghai P. R. China
- Shanghai Engineering Center of Industrial Catalysis for Chiral Drugs 200433 Shanghai P. R. China
| | - Meifen Jiang
- Engineering Center of Catalysis and Synthesis for Chiral Molecules Department of Chemistry Fudan University 200433 Shanghai P. R. China
- Shanghai Engineering Center of Industrial Catalysis for Chiral Drugs 200433 Shanghai P. R. China
| | - Fener Chen
- Engineering Center of Catalysis and Synthesis for Chiral Molecules Department of Chemistry Fudan University 200433 Shanghai P. R. China
- Shanghai Engineering Center of Industrial Catalysis for Chiral Drugs 200433 Shanghai P. R. China
- Institute of Pharmaceutical Science and Technology Zhejiang University of Technology 310014 Hangzhou P. R. China
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7
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Trouvé J, Gramage-Doria R. Beyond hydrogen bonding: recent trends of outer sphere interactions in transition metal catalysis. Chem Soc Rev 2021; 50:3565-3584. [DOI: 10.1039/d0cs01339k] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The implementation of interactions beyond hydrogen bonding in the 2nd coordination sphere of transition metal catalysts is rare. However, it has already shown great promise in last 5 years, providing new tools to control the activity and selectivity as here reviewed.
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