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Kang Q, Lin Y, Li Y, Xu L, Li K, Shi H. Catalytic S
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Ar Hydroxylation and Alkoxylation of Aryl Fluorides. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202106440] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Qi‐Kai Kang
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province School of Science Westlake University 18 Shilongshan Road Hangzhou 310024 Zhejiang Province China
- Institute of Natural Sciences Westlake Institute for Advanced Study 18 Shilongshan Road Hangzhou 310024 Zhejiang Province China
| | - Yunzhi Lin
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province School of Science Westlake University 18 Shilongshan Road Hangzhou 310024 Zhejiang Province China
| | - Yuntong Li
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province School of Science Westlake University 18 Shilongshan Road Hangzhou 310024 Zhejiang Province China
| | - Lun Xu
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province School of Science Westlake University 18 Shilongshan Road Hangzhou 310024 Zhejiang Province China
| | - Ke Li
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province School of Science Westlake University 18 Shilongshan Road Hangzhou 310024 Zhejiang Province China
- Institute of Natural Sciences Westlake Institute for Advanced Study 18 Shilongshan Road Hangzhou 310024 Zhejiang Province China
| | - Hang Shi
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province School of Science Westlake University 18 Shilongshan Road Hangzhou 310024 Zhejiang Province China
- Institute of Natural Sciences Westlake Institute for Advanced Study 18 Shilongshan Road Hangzhou 310024 Zhejiang Province China
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Kang QK, Lin Y, Li Y, Xu L, Li K, Shi H. Catalytic S N Ar Hydroxylation and Alkoxylation of Aryl Fluorides. Angew Chem Int Ed Engl 2021; 60:20391-20399. [PMID: 34263536 DOI: 10.1002/anie.202106440] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Revised: 07/08/2021] [Indexed: 12/14/2022]
Abstract
Nucleophilic aromatic substitution (SN Ar) is a powerful strategy for incorporating a heteroatom into an aromatic ring by displacement of a leaving group with a nucleophile, but this method is limited to electron-deficient arenes. We have now established a reliable method for accessing phenols and phenyl alkyl ethers via catalytic SN Ar reactions. The method is applicable to a broad array of electron-rich and neutral aryl fluorides, which are inert under classical SN Ar conditions. Although the mechanism of SN Ar reactions involving metal arene complexes is hypothesized to involve a stepwise pathway (addition followed by elimination), experimental data that support this hypothesis is still under exploration. Mechanistic studies and DFT calculations suggest either a stepwise or stepwise-like energy profile. Notably, we isolated a rhodium η5 -cyclohexadienyl complex intermediate with an sp3 -hybridized carbon bearing both a nucleophile and a leaving group.
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Affiliation(s)
- Qi-Kai Kang
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, School of Science, Westlake University, 18 Shilongshan Road, Hangzhou, 310024, Zhejiang Province, China.,Institute of Natural Sciences, Westlake Institute for Advanced Study, 18 Shilongshan Road, Hangzhou, 310024, Zhejiang Province, China
| | - Yunzhi Lin
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, School of Science, Westlake University, 18 Shilongshan Road, Hangzhou, 310024, Zhejiang Province, China
| | - Yuntong Li
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, School of Science, Westlake University, 18 Shilongshan Road, Hangzhou, 310024, Zhejiang Province, China
| | - Lun Xu
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, School of Science, Westlake University, 18 Shilongshan Road, Hangzhou, 310024, Zhejiang Province, China
| | - Ke Li
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, School of Science, Westlake University, 18 Shilongshan Road, Hangzhou, 310024, Zhejiang Province, China.,Institute of Natural Sciences, Westlake Institute for Advanced Study, 18 Shilongshan Road, Hangzhou, 310024, Zhejiang Province, China
| | - Hang Shi
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, School of Science, Westlake University, 18 Shilongshan Road, Hangzhou, 310024, Zhejiang Province, China.,Institute of Natural Sciences, Westlake Institute for Advanced Study, 18 Shilongshan Road, Hangzhou, 310024, Zhejiang Province, China
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Kang QK, Lin Y, Li Y, Shi H. Ru(II)-Catalyzed Amination of Aryl Fluorides via η 6-Coordination. J Am Chem Soc 2020; 142:3706-3711. [PMID: 32039590 DOI: 10.1021/jacs.9b13684] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
We developed a Ru/hemilabile-ligand-catalyzed nucleophilic aromatic substitution (SNAr) of aryl fluorides as the limiting reagents. Significant ligand enhancement was demonstrated by the engagement of both electron-rich and neutral arenes in the SNAr amination without using excess arenes. Preliminary mechanistic studies revealed that the nucleophilic substitution proceeds on a η6-complex of the Ru catalyst and the substrate, and the hemilabile ligand facilitates dissociation of products from the metal center.
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Affiliation(s)
- Qi-Kai Kang
- Institute of Natural Sciences , Westlake Institute for Advanced Study , 18 Shilongshan Road , Hangzhou 310024 , Zhejiang , China.,Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, School of Science , Westlake University , 18 Shilongshan Road , Hangzhou 310024 , Zhejiang , China
| | - Yunzhi Lin
- Institute of Natural Sciences , Westlake Institute for Advanced Study , 18 Shilongshan Road , Hangzhou 310024 , Zhejiang , China.,Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, School of Science , Westlake University , 18 Shilongshan Road , Hangzhou 310024 , Zhejiang , China
| | - Yuntong Li
- Institute of Natural Sciences , Westlake Institute for Advanced Study , 18 Shilongshan Road , Hangzhou 310024 , Zhejiang , China.,Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, School of Science , Westlake University , 18 Shilongshan Road , Hangzhou 310024 , Zhejiang , China
| | - Hang Shi
- Institute of Natural Sciences , Westlake Institute for Advanced Study , 18 Shilongshan Road , Hangzhou 310024 , Zhejiang , China.,Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, School of Science , Westlake University , 18 Shilongshan Road , Hangzhou 310024 , Zhejiang , China
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Peixoto D, Malta G, Cruz H, Barroso S, Carvalho AL, Ferreira LM, Branco PS. N-Heterocyclic Olefin Catalysis for the Ring Opening of Cyclic Amidine Compounds: A Pathway to the Synthesis of ε-Caprolactam- and γ-Lactam-Derived Amines. J Org Chem 2019; 84:3793-3800. [PMID: 30753075 DOI: 10.1021/acs.joc.8b02823] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
For the first time, 1,2-dimethyl-3-ethylimidazolium iodide (1a) catalyzes the ring opening of the bicyclic amidine system of DBU (1,8-diazabicyclo[5.4.0]undec-7-ene) or DBN (1,5-diazabicyclo[4.3.0]non-5-ene) on reaction with aldehydes. The mechanism here proposed involves an N-heterocyclic olefin (NHO) catalytic species that acts as a nucleophile to promote the cyclic amidine ring opening. The resulting ε-caprolactam- and γ-lactam-derived imines were obtained in moderate to excellent yields (28-99%) and reduced to the corresponding amines by sodium borohydride. Confirmation of the imine product was achieved via single-crystal X-ray diffraction studies.
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Aoki Y, O'Brien HM, Kawasaki H, Takaya H, Nakamura M. Ligand-Free Iron-Catalyzed C-F Amination of Diarylamines: A One-Pot Regioselective Synthesis of Diaryl Dihydrophenazines. Org Lett 2019; 21:461-464. [PMID: 30628796 DOI: 10.1021/acs.orglett.8b03702] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A one-pot synthesis of various 5,10-diaryl-5,10-dihydrophenazines (DADHPs) from diarylamines has been achieved by using an iron-catalyzed C-F amination. Homodimerization of magnesium diarylamides, followed by defluorinative intramolecular cyclization (double ortho C-F amination) in the presence of catalytic FeCl2 and stoichiometric 1,2-dibromoethane, affords the corresponding DADHPs with complete regiocontrol. The unique high reactivity of fluorine over other halogens indicates that amination proceeds via an SNAr mechanism facilitated by iron.
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Affiliation(s)
- Yuma Aoki
- International Research Center for Elements Science, Institute for Chemical Research , Kyoto University , Uji, Kyoto 611-0011 , Japan.,Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering , Kyoto University , Nishikyo-ku, Kyoto 615-8510 , Japan
| | - Harry M O'Brien
- School of Chemistry , University of Bristol , Cantock's Close , Bristol BS8 1TS , U.K
| | - Hiroto Kawasaki
- International Research Center for Elements Science, Institute for Chemical Research , Kyoto University , Uji, Kyoto 611-0011 , Japan.,Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering , Kyoto University , Nishikyo-ku, Kyoto 615-8510 , Japan
| | - Hikaru Takaya
- International Research Center for Elements Science, Institute for Chemical Research , Kyoto University , Uji, Kyoto 611-0011 , Japan.,Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering , Kyoto University , Nishikyo-ku, Kyoto 615-8510 , Japan
| | - Masaharu Nakamura
- International Research Center for Elements Science, Institute for Chemical Research , Kyoto University , Uji, Kyoto 611-0011 , Japan.,Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering , Kyoto University , Nishikyo-ku, Kyoto 615-8510 , Japan
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Li B, Xu C, He YM, Deng GJ, Fan QH. Asymmetric Hydrogenation of Bis(quinolin-2-yl)methanes: A Direct Access to Chiral 1,3-Diamines. CHINESE J CHEM 2018. [DOI: 10.1002/cjoc.201800363] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Bin Li
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function; Institute of Chemistry, Chinese Academy of Sciences (CAS), and University of Chinese Academy of Sciences; Beijing 100190 China
- Key Laboratory of Environmentally Friendly Chemistry of the Ministry of Education; College of Chemistry, Xiangtan University; Xiangtan Hunan 411105 China
| | - Cong Xu
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function; Institute of Chemistry, Chinese Academy of Sciences (CAS), and University of Chinese Academy of Sciences; Beijing 100190 China
| | - Yan-Mei He
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function; Institute of Chemistry, Chinese Academy of Sciences (CAS), and University of Chinese Academy of Sciences; Beijing 100190 China
| | - Guo-Jun Deng
- Key Laboratory of Environmentally Friendly Chemistry of the Ministry of Education; College of Chemistry, Xiangtan University; Xiangtan Hunan 411105 China
| | - Qing-Hua Fan
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function; Institute of Chemistry, Chinese Academy of Sciences (CAS), and University of Chinese Academy of Sciences; Beijing 100190 China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin); Tianjin 300071 China
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n-Butyllithium-mediated synthesis of N-aryl tertiary amines by reactions of fluoroarenes with secondary amines at room temperature. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.01.050] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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Martjuga M, Shabashov D, Belyakov S, Liepinsh E, Suna E. Asymmetric Synthesis of 1,3-Diamines by Diastereoselective Reduction of Enantiopure N-tert-Butanesulfinylketimines: Unusual Directing Effects of the ortho-Substituent. J Org Chem 2010; 75:2357-68. [DOI: 10.1021/jo100173f] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Marina Martjuga
- Latvian Institute of Organic Synthesis, Aizkraukles 21, LV-1006 Riga, Latvia
| | - Dmitry Shabashov
- Latvian Institute of Organic Synthesis, Aizkraukles 21, LV-1006 Riga, Latvia
| | - Sergey Belyakov
- Latvian Institute of Organic Synthesis, Aizkraukles 21, LV-1006 Riga, Latvia
| | - Edvards Liepinsh
- Latvian Institute of Organic Synthesis, Aizkraukles 21, LV-1006 Riga, Latvia
| | - Edgars Suna
- Latvian Institute of Organic Synthesis, Aizkraukles 21, LV-1006 Riga, Latvia
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Otsuka M, Endo K, Shibata T. CatalyticSNAr reaction of non-activated fluoroarenes with amines viaRuη6-arene complexes. Chem Commun (Camb) 2010; 46:336-8. [DOI: 10.1039/b919413d] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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