1
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Wu LS, Zhou T, Shi BF. Pd(II)-Catalyzed Desymmetrizing gem-Dimethyl C(sp 3)-H Alkenylation/Aza-Wacker Cyclization Directed by PIP Auxiliary. Org Lett 2024; 26:4457-4462. [PMID: 38775281 DOI: 10.1021/acs.orglett.4c01214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2024]
Abstract
Desymmetrization of gem-dimethyl groups has been developed as an efficient pathway to achieve asymmetric C(sp3)-H functionalization. Herein, we described a Pd(II)-catalyzed desymmetrizing gem-dimethyl C(sp3)-H alkenylation/aza-Wacker cyclization directed by a bidentate 2-pyridinylisopropyl auxiliary. Chiral α-methyl γ-lactams were obtained in good yields (up to 82%) and high enantioselectivities (up to 91.5% ee).
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Affiliation(s)
- Le-Song Wu
- Center of Chemistry for Frontier Technologies, Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Tao Zhou
- Center of Chemistry for Frontier Technologies, Department of Chemistry, Zhejiang University, Hangzhou 310027, China
- College of Material Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou 311121, Zhejiang China
| | - Bing-Feng Shi
- Center of Chemistry for Frontier Technologies, Department of Chemistry, Zhejiang University, Hangzhou 310027, China
- College of Material Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou 311121, Zhejiang China
- College of Biological, Chemical Science and Engineering, Jiaxing University, Jiaxing 314001, China
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2
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Zhang Z, Wei F, Wang X, Zhang Y. Pd(0)-Catalyzed Intermolecular Methylene C(sp 3)-H Silylation by Using N-Heterocyclic Carbene Ligands. Org Lett 2024; 26:3586-3590. [PMID: 38651729 DOI: 10.1021/acs.orglett.4c01044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/25/2024]
Abstract
The direct functionalization of methylene C(sp3)-H bonds is one of the greatest challenges in transition metal-catalyzed C-H activation. Although Pd(0)-catalyzed intramolecular cyclization reactions of methylene C(sp3)-H bonds have been reported, intermolecular functionalization remains to be discovered. Herein, we report the first example of a Pd(0)-catalyzed intermolecular methylene C(sp3)-H functionalization reaction. By use of a N-heterocyclic carbene ligand, the methylene C(sp3)-H bonds of 1-(benzyloxy)-2-iodobenzenes are activated and disilylated with hexamethyldisilane, affording disilylated products.
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Affiliation(s)
- Zhengyang Zhang
- School of Chemical Science and Engineering, Shanghai Key Laboratory of Chemical Assessment and Sustainability, Tongji University, Shanghai 200092, China
| | - Feng Wei
- School of Chemical Science and Engineering, Shanghai Key Laboratory of Chemical Assessment and Sustainability, Tongji University, Shanghai 200092, China
| | - Xuan Wang
- Department of Chemistry, College of Sciences, Shanghai University, 99 Shangda Road, Shanghai 200444, China
| | - Yanghui Zhang
- School of Chemical Science and Engineering, Shanghai Key Laboratory of Chemical Assessment and Sustainability, Tongji University, Shanghai 200092, China
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3
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Mohanlal S, Saha D, Pandey S, Acharya R, Sharma NK. Synthesis of R-GABA Derivatives via Pd(II) Catalyzed Enantioselective C(sp 3)-H Arylation and Virtual Validation with GABA B1 Receptor for Potential leads. Chem Asian J 2024:e202400064. [PMID: 38497556 DOI: 10.1002/asia.202400064] [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: 01/19/2024] [Revised: 02/20/2024] [Accepted: 03/18/2024] [Indexed: 03/19/2024]
Abstract
GABA (γ-amino butyric acid) analogues like baclofen, tolibut, phenibut, etc., are well-known GABAB1 inhibitors and pharmaceutically important drugs. However, there is a huge demand for more chiral GABA aryl analogues with promising pharmacological actions. Here, we demonstrate the chiral ligand acetyl-protected amino quinoline (APAQ) mediated enantioselective synthesis of GABAB1 inhibitor drug scaffolds from easily accessible GABA via Pd-catalyzed C(sp3)-H activation. The synthetic methodology shows moderate to good yields, up to 74% of ee. We have successfully demonstrated the deprotection and removal of the directing group to synthesize R-tolibut in 86% yield. Further, we employed computation to probe the binding of R-GABA analogues to the extracellular domain of the human GABAB1 receptor. Our Rosetta-based molecular docking calculations show better binding for four R-enantiomers of GABA analogues than R-baclofen and R-phenibut. In addition, we employed GROMACS MD simulations and MMPB(GB)SA calculations to identify per-residue contribution to binding free energy. Our computational results suggest analogues (3R)-4-amino-3-(3,4-dimethylphenyl) butanoic acid, (3R)-4-amino-3-(3-fluorophenyl) butanoic acid, (3R)-3-(4-acetylphenyl)-4-aminobutanoic acid, (3R)-4-amino-3-(4-methoxyphenyl) butanoic acid, and (3R)-4-amino-3-phenylbutanoic acid are potential leads which could be synthesized from our methodology reported here.
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Affiliation(s)
- Smitha Mohanlal
- School of Chemical Sciences, National Institute of Science Education and Research, Bhubaneswar, Jatni, 752050
- Homi Bhabha National Institute (HBNI), Training School Complex, Anushaktinagar, Mumbai, 400094, India
| | - Diprupa Saha
- School of Chemical Sciences, National Institute of Science Education and Research, Bhubaneswar, Jatni, 752050
- Homi Bhabha National Institute (HBNI), Training School Complex, Anushaktinagar, Mumbai, 400094, India
| | - Shubhant Pandey
- School of Biological Sciences, National Institute of Science Education and Research, Bhubaneswar, Jatni, 752050
- Homi Bhabha National Institute (HBNI), Training School Complex, Anushaktinagar, Mumbai, 400094, India
| | - Rudresh Acharya
- School of Biological Sciences, National Institute of Science Education and Research, Bhubaneswar, Jatni, 752050
- Homi Bhabha National Institute (HBNI), Training School Complex, Anushaktinagar, Mumbai, 400094, India
| | - Nagendra K Sharma
- School of Chemical Sciences, National Institute of Science Education and Research, Bhubaneswar, Jatni, 752050
- Homi Bhabha National Institute (HBNI), Training School Complex, Anushaktinagar, Mumbai, 400094, India
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4
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Lv X, Wang M, Zhao Y, Shi Z. P(III)-Directed Asymmetric C-H Arylation toward Planar Chiral Ferrocenes by Palladium Catalysis. J Am Chem Soc 2024; 146:3483-3491. [PMID: 38266486 DOI: 10.1021/jacs.3c13266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2024]
Abstract
Planar chiral ferrocenyl phosphines have been employed as highly valuable ligands in metal-catalyzed asymmetric reactions. However, their preparation remains a formidable challenge due to the requirement for intricate, multistep synthetic sequences. In addressing this issue, we have developed a groundbreaking enantioselective C-H activation strategy facilitated by P(III) directing groups, enabling the efficient construction of planar chiral ferrocenyl phosphines in a single step. Our innovative approach entails the combination of a palladium catalyst, a parent ferrocenyl phosphine, and a chiral phosphoramidite ligand, leading to exceptional reactivity and enantioselectivity. Remarkably, these novel ligands exhibit remarkable efficacy in silver-catalyzed asymmetric 1,3-dipolar cycloadditions. We carried out a combination of experimental and computational studies to obtain a more comprehensive understanding of the reaction pathway and the factors contributing to enantioselectivity.
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Affiliation(s)
- Xueli Lv
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Minyan Wang
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Yue Zhao
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Zhuangzhi Shi
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
- College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
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5
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Yue Q, Liu B, Liao G, Shi BF. Binaphthyl Scaffold: A Class of Versatile Structure in Asymmetric C–H Functionalization. ACS Catal 2022. [DOI: 10.1021/acscatal.2c02193] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Qiang Yue
- Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang310027, China
| | - Bin Liu
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, Jiangxi330031, China
| | - Gang Liao
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543Republic of Singapore
| | - Bing-Feng Shi
- Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang310027, China
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan453007, China
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6
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Xu YX, Liang YQ, Cai ZJ, Ji SJ. Ruthenium(II)-Catalyzed Chelation-Assisted Desulfitative Arylation of Benzo[h]quinolines with Arylsulfonyl Chlorides. Org Lett 2022; 24:2601-2606. [PMID: 35357174 DOI: 10.1021/acs.orglett.2c00542] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Herein, a novel chelation-assisted C-H arylation reaction of benzo[h]quinoline is described. This transformation, using [RuCl2(p-cymene)]2 as the catalyst and cheap and easily accessible arylsulfonyl chlorides as the arylation source, featured simple reaction conditions, a broad substrate scope, and functional group tolerance. The successful application of some bioactive-molecule-based sulfonyl chlorides further highlighted the potential utility and importance of this desulfitative C-H arylation protocol.
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Affiliation(s)
- Yi-Xin Xu
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, China
| | - Yu-Qing Liang
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, China
| | - Zhong-Jian Cai
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, China
| | - Shun-Jun Ji
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, China.,Suzhou Baolidi Functional Materials Research Institute, Suzhou 215144, China
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7
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Babu SA, Aggarwal Y, Patel P, Tomar R. Diastereoselective palladium-catalyzed functionalization of prochiral C(sp 3)-H bonds of aliphatic and alicyclic compounds. Chem Commun (Camb) 2022; 58:2612-2633. [PMID: 35113087 DOI: 10.1039/d1cc05649b] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
We highlight the reported developments of the palladium-catalyzed C-H activation and functionalization of the inactive/unreactive prochiral C(sp3)-H bonds of aliphatic and alicyclic compounds. There exist numerous classical methods for generating contiguous stereogenic centers in a compound with a high degree of stereocontrol. Along similar lines, the Pd(II)-catalyzed, directing group-aided functionalization of inactive prochiral/diastereotopic C(sp3)-H bonds have been exploited to accomplish the stereoselective construction of stereo-arrays in organic compounds. We present a concise discussion on how specific strategies consisting of Pd(II)-catalyzed, directing group-aided C(sp3)-H functionalization have been utilized to generate two or more stereogenic centers in aliphatic and alicyclic compounds.
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Affiliation(s)
- Srinivasarao Arulananda Babu
- Department of Chemical Sciences, Indian Institute of Science Education and Research, Mohali, Knowledge City, Sector 81, SAS Nagar, Mohali, Manauli P.O., Punjab, 140306, India.
| | - Yashika Aggarwal
- Department of Chemical Sciences, Indian Institute of Science Education and Research, Mohali, Knowledge City, Sector 81, SAS Nagar, Mohali, Manauli P.O., Punjab, 140306, India.
| | - Pooja Patel
- Department of Chemical Sciences, Indian Institute of Science Education and Research, Mohali, Knowledge City, Sector 81, SAS Nagar, Mohali, Manauli P.O., Punjab, 140306, India.
| | - Radha Tomar
- Department of Chemical Sciences, Indian Institute of Science Education and Research, Mohali, Knowledge City, Sector 81, SAS Nagar, Mohali, Manauli P.O., Punjab, 140306, India.
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8
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Li HL, Yang DF, Jing HQ, Antilla JC, Kuninobu Y. Palladium-Catalyzed Enantioselective C(sp 3)-H Arylation of 2-Propyl Azaaryls Enabled by an Amino Acid Ligand. Org Lett 2022; 24:1286-1291. [PMID: 35142219 DOI: 10.1021/acs.orglett.1c04215] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A palladium(II)-catalyzed enantioselective arylation of unbiased secondary C(sp3)-H bonds was developed. The enantioselectivity was controlled by the combination of a pyridyl or isoquinolinyl directing group and an amino acid, N-Boc-2-pentyl proline. A variety of 2-propyl azaaryls and biaryl iodides were employed to provide arylated products in moderate to good yields (up to 82%) with high enantioselectivities (up to 93:7 er). This reaction is a rare example of an amino-acid-enabled enantioselective acyclic methylene C(sp3)-H arylation. Furthermore, the reaction proceeded with high enantioselectivity even on a gram scale, and the product was transformed to a 5,6,7,8-tetrahydroisoquinoline bioactive molecule. Kinetic isotope effect (KIE) experiments indicated that C-H activation is the rate-determining step for the enantioselective C(sp3)-H arylation.
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Affiliation(s)
- Hong-Liang Li
- Guangxi Key Laboratory of Marine Natural Products and Combinatorial Biosynthesis Chemistry, Beibu Gulf Marine Research Center, Guangxi Academy of Sciences, Nanning 53007, China
| | - Deng-Feng Yang
- Guangxi Key Laboratory of Marine Natural Products and Combinatorial Biosynthesis Chemistry, Beibu Gulf Marine Research Center, Guangxi Academy of Sciences, Nanning 53007, China
| | - Hua-Qing Jing
- School of Pharmaceutical Science and Technology, Tianjin University, Nakai District, Tianjin 30072, China
| | - Jon C Antilla
- School of Pharmaceutical Science and Technology, Tianjin University, Nakai District, Tianjin 30072, China
| | - Yoichiro Kuninobu
- Institute for Materials Chemistry and Engineering, Kyushu University, 6-1 Kasugakoen, Kasuga-shi, Fukuoka 816-8580, Japan
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9
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Li B, Xu H, Dang Y, Houk KN. Dispersion and Steric Effects on Enantio-/Diastereoselectivities in Synergistic Dual Transition-Metal Catalysis. J Am Chem Soc 2022; 144:1971-1985. [DOI: 10.1021/jacs.1c12664] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Bo Li
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, China
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, United States
| | - Hui Xu
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, China
| | - Yanfeng Dang
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, China
| | - K. N. Houk
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, United States
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10
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Zhang H, Sun MC, Yang D, Li T, Song MP, Niu JL. Cobalt(II)-Catalyzed Activation of C(sp3)–H Bonds: Organic Oxidant Enabled Selective Functionalization. ACS Catal 2022. [DOI: 10.1021/acscatal.1c05250] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- He Zhang
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - Meng-Chan Sun
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - Dandan Yang
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - Tong Li
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - Mao-Ping Song
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - Jun-Long Niu
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China
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11
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12
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Yu X, Zhang ZZ, Niu JL, Shi BF. Coordination-assisted, transition-metal-catalyzed enantioselective desymmetric C–H functionalization. Org Chem Front 2022. [DOI: 10.1039/d1qo01884a] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Recent advances in transition-metal-catalyzed enantioselective desymmetric C–H functionalization are summarized.
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Affiliation(s)
- Xin Yu
- Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang, 310027, China
| | - Zhuo-Zhuo Zhang
- School of Food and Biological Engineering, Chengdu University, Chengdu, Sichuan, 610106, China
| | - Jun-Long Niu
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
| | - Bing-Feng Shi
- Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang, 310027, China
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13
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Wang J, Li M. Recent Advances on Transition-Metal-Catalyzed Asymmetric C–H Arylation Reactions. SYNTHESIS-STUTTGART 2021. [DOI: 10.1055/a-1677-5870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
AbstractTransition-metal-catalyzed asymmetric C–H functionalization has become a powerful strategy to synthesize complex chiral molecules. Recently, catalytic enantioselective C–H arylation has attracted great interest from organic chemists to construct aryl-substituted chiral compounds. In this short review, we highlight recent advances in asymmetric C–H arylation from 2019 to late 2021, including enantioselective C(sp2)–H arylation to construct axial or planar chiral compounds, and enantioselective C(sp3)–H arylation to introduce central chirality via desymmetrization of the methyl group or methylene C–H activation. These processes proceed with palladium, rhodium, iridium, nickel, or copper catalysts, and utilize aryl halides, boron, or diazo derivatives as arylation reagents.1 Introduction2 Transition-Metal-Catalyzed Asymmetric C(sp2)–H Arylation2.1 Chelation-Assisted Asymmetric C(sp2)–H Arylation for the Construction of Atropisomer2.2 Chelation-Assisted Asymmetric C(sp2)–H Arylation for the Construction of Planar Chiral Compounds2.3 Chelation-Assisted Asymmetric C(sp2)–H Arylation and Axial-to-Central Chirality Transfer for the Construction of Spirocycles2.4 Other Asymmetric C(sp2)–H Arylation Reactions3 Transition-Metal-Catalyzed Asymmetric C(sp3)–H Arylation3.1 Chelation-Assisted Enantioselective C(sp3)–H Arylation through Desymmetrization3.2 Chelation-Assisted Enantioselective Methylene C(sp3)–H Arylation3.3 Other Asymmetric C(sp3)–H Arylations4 Conclusion and Outlook
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Affiliation(s)
- Jun Wang
- Department of Chemistry, Southern University of Science and Technology
- Department of Chemistry, Hong Kong Baptist University
| | - Mingliang Li
- Department of Chemistry, Southern University of Science and Technology
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14
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Wang HW, Wu JX, Qiao YH, Li YF, Li DC, Dou JM, Yao QX, Lu Y. Rh III-Catalyzed Direct Heteroarylation of C(sp 3)-H and C(sp 2)-H Bonds in Heterocycles with N-Heteroaromatic Boronates. Org Lett 2021; 23:7177-7182. [PMID: 34472870 DOI: 10.1021/acs.orglett.1c02546] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Herein, we disclose a RhIII-catalyzed heteroarylation of C(sp3)-H and C(sp2)-H bonds in heterocycles with organoboron reagents. This protocol displays high efficiency and excellent functional group tolerance. A range of heterocyclic boronates with strong coordinating atoms, including pyridine, pyrimidine, pyrazole, thiophene, and furan derivatives, can be extensively served as the coupling reagents. The direct heteroarylation method could supply potential application in terms of the synthesis of drug molecules with multiple heterocycles.
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Affiliation(s)
- Huai-Wei Wang
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252000, China
| | - Jia-Xue Wu
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252000, China
| | - Yu-Han Qiao
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252000, China
| | - Yong-Fei Li
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252000, China
| | - Da-Cheng Li
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252000, China
| | - Jian-Min Dou
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252000, China
| | - Qing-Xia Yao
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252000, China
| | - Yi Lu
- Coordination Chemistry Institute, State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
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15
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Zhang Q, Shi BF. 2-(Pyridin-2-yl)isopropyl (PIP) Amine: An Enabling Directing Group for Divergent and Asymmetric Functionalization of Unactivated Methylene C(sp 3)-H Bonds. Acc Chem Res 2021; 54:2750-2763. [PMID: 34019373 DOI: 10.1021/acs.accounts.1c00168] [Citation(s) in RCA: 90] [Impact Index Per Article: 30.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Directing group (DG) assistance provides a good solution to the problems of reactivity and selectivity, two of the fundamental challenges in C(sp3)-H activation. However, the activation of unbiased methylene C(sp3)-H bonds remains challenging due to the high heterolytic bond dissociation energy and substantial steric hindrance. Two main strategies have been developed thus far, that is, use of a strongly coordinating bidentate DG pioneered by Daugulis and use of a weakly coordinating monodentate DG accelerated by pyridine-type ligands, as disclosed by Yu. The seminal work by Daugulis sparked significant interest in the application of the monoanionic bidentate auxiliary in aliphatic C-H activation reactions. Our research has focused on enabling the divergent functionalization and enantiotopic differentiation of unactivated methylene C-H bonds. Inspired by the structure of bidentate 8-aminoquinoline and the accelerating effect of the gem-dimethyl moiety in cyclometalations, we developed a strongly coordinating bidentate 2-(pyridine-yl)isopropyl (PIP) amine DG consisting of a pyridyl group, a gem-dimethyl moiety, and an amino group, which enabled the divergent functionalization of unactivated β-methylene C(sp3)-H bonds to forge C-O, C-N, C-C, and C-F bonds with palladium catalysts. The exclusive β-selectivity was ascribed to the preferential formation of kinetically favored [5,5]-bicyclic palladacycle intermediates. DFT calculations revealed that the well-designed gem-dimethyl group was responsible for the lowered energy and compressed bite angle of the key transition state related to C-H cleavage.More recently, the combination of PIP amine with axially chiral ligands was found to promote asymmetric functionalization of unbiased methylene C(sp3)-H bonds, a challenging research topic in the area of C-H activation that remains to be addressed. Two different types of axially chiral ligands, namely, non-C2-symmetric chiral phosphoric acids (CPAs) and 3,3'-disubstituted BINOLs, have been developed. The former enabled Pd(II)-catalyzed inter- and intramolecular arylation of unbiased methylene C(sp3)-H bonds with high enantioselectivity, whereas the latter promoted a series of asymmetric functionalization reactions, such as alkynylation, arylation, alkenylation/aza-Wacker cyclization, and intramolecular amidation. The unexpectedly high stereocontrol compared with other bidentate DGs might be attributable to steric communication between the ligand and gem-dimethyl moiety of PIP amine. Thus far, the combination of PIP amine DG with 3,3'-disubstituted BINOL ligands is arguably the most general strategy for asymmetric functionalization of unbiased methylene C(sp3)-H bonds. Finally, the ease of installation and removal of PIP under mild conditions and synthetic applications are described.
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Affiliation(s)
- Qi Zhang
- Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang 310027, China
| | - Bing-Feng Shi
- Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang 310027, China
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16
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Yang X, Jiang MX, Zhou T, Han YQ, Xu XT, Zhang K, Shi BF. Pd(II)-Catalyzed enantioselective arylation of unbiased methylene C(sp 3)-H bonds enabled by a 3,3'-F 2-BINOL ligand. Chem Commun (Camb) 2021; 57:5562-5565. [PMID: 33969855 DOI: 10.1039/d1cc01690c] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Palladium-catalyzed asymmetric functionalization of unbiased methylene C(sp3)-H bonds is a long-standing challenge. Here, we report a Pd(ii)-catalyzed highly enantioselective arylation of unbiased methylene C(sp3)-H bonds enabled by a strongly coordinating bidentate 2-pyridinylisopropyl (PIP) directing group and an easily accessible 3,3'-F2-BINOL chiral ligand. The use of aryl iodides with the combination of 3,3'-F2-BINOL was beneficial for high enantiocontrol. A range of aliphatic amides and aryl iodides were tolerated, providing the desired arylated products in high enantioselectivities (up to 96% ee). The PIP directing group could be removed under mild conditions without erosion of enantiopurity.
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Affiliation(s)
- Xu Yang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529020, China
| | - Meng-Xue Jiang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529020, China
| | - Tao Zhou
- Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang 310027, China.
| | - Ye-Qiang Han
- Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang 310027, China.
| | - Xue-Tao Xu
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529020, China
| | - Kun Zhang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529020, China
| | - Bing-Feng Shi
- Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang 310027, China. and College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, China
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17
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Wu LS, Ding Y, Han YQ, Shi BF. Asymmetric Synthesis of γ-Lactams Containing α,β-Contiguous Stereocenters via Pd(II)-Catalyzed Cascade Methylene C(sp3)–H Alkenylation/Aza-Wacker Cyclization. Org Lett 2021; 23:2048-2051. [DOI: 10.1021/acs.orglett.1c00204] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Le-Song Wu
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Yi Ding
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Ye-Qiang Han
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Bing-Feng Shi
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China
- Green Catalysis Center and College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
- College of Biological, Chemical Science and Engineering, Jiaxing University, Jiaxing 314001, China
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18
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Jiang MX, Yang X, Han YQ, Zhou T, Xu XT, Zhang K, Shi BF. Pd(ii)-Catalyzed asymmetric intramolecular arylation of unbiased methylene C(sp3)–H bonds using readily accessible 3,3′-F2-BINOL as a chiral ligand. Org Chem Front 2021. [DOI: 10.1039/d1qo00302j] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Pd(ii)-Catalyzed asymmetric intramolecular methylene C(sp3)–H arylation using readily accessible 3,3′-F2-BINOL as a ligand is reported.
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Affiliation(s)
- Meng-Xue Jiang
- School of Biotechnology and Health Sciences
- Wuyi University
- Jiangmen
- China
| | - Xu Yang
- School of Biotechnology and Health Sciences
- Wuyi University
- Jiangmen
- China
| | - Ye-Qiang Han
- Department of Chemistry
- Zhejiang University
- Hangzhou
- China
| | - Tao Zhou
- Department of Chemistry
- Zhejiang University
- Hangzhou
- China
| | - Xue-Tao Xu
- School of Biotechnology and Health Sciences
- Wuyi University
- Jiangmen
- China
| | - Kun Zhang
- School of Biotechnology and Health Sciences
- Wuyi University
- Jiangmen
- China
| | - Bing-Feng Shi
- Department of Chemistry
- Zhejiang University
- Hangzhou
- China
- College of Chemistry and Molecular Engineering
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19
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Han YQ, Zhang Q, Yang X, Jiang MX, Ding Y, Shi BF. Pd(II)-Catalyzed Enantioselective Intramolecular Arylation of Unbiased C(sp3)–H Bonds to Construct Chiral Benzo-ring Compounds. Org Lett 2020; 23:97-101. [DOI: 10.1021/acs.orglett.0c03775] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Ye-Qiang Han
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Qi Zhang
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Xu Yang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529020, China
| | - Meng-Xue Jiang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529020, China
| | - Yi Ding
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Bing-Feng Shi
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China
- College of Biological, Chemical Science and Engineering, Jiaxing University, Jiaxing 314001, China
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