1
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Shi Y, Zhang Y, Ji X, Huang H. Hydroazidation of trifluoromethyl alkenes with trimethylsilyl azide enabled by organic photoredox catalysis. Chem Commun (Camb) 2024; 60:7741-7744. [PMID: 38973554 DOI: 10.1039/d4cc02503b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/09/2024]
Abstract
Herein, we report an organic photoredox-catalyzed hydroazidation of trifluoromethyl alkenes with user-friendly trimethylsilyl azide (TMSN3), enabling a direct access to a broad range of valuable β-CF3-azides with exclusive selectivity under mild reaction conditions. The synthetic utility of this reaction was demonstrated by the late-stage modification of complex drug derivatives, scale-up of the reaction and diverse further derivatizations of the β-CF3-azide product.
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Affiliation(s)
- Yutao Shi
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China.
| | - Yuliang Zhang
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China.
| | - Xiaochen Ji
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China.
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, 453007, China
| | - Huawen Huang
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China.
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, 453007, China
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2
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Shen HC, Wang ZS, Noble A, Aggarwal VK. Simultaneous Stereoinvertive and Stereoselective C(sp 3)-C(sp 3) Cross-Coupling of Boronic Esters and Allylic Carbonates. J Am Chem Soc 2024; 146:13719-13726. [PMID: 38721780 PMCID: PMC11117407 DOI: 10.1021/jacs.4c03686] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2024] [Revised: 05/03/2024] [Accepted: 05/03/2024] [Indexed: 05/23/2024]
Abstract
With increasing interest in constructing more three-dimensional entities, there has been growing interest in cross-coupling reactions that forge C(sp3)-C(sp3) bonds, which leads to additional challenges as it is not just a more difficult bond to construct but issues of stereocontrol also arise. Herein, we report the stereocontrolled cross-coupling of enantioenriched boronic esters with racemic allylic carbonates enabled by iridium catalysis, leading to the formation of C(sp3)-C(sp3) bonds with single or vicinal stereogenic centers. The method shows broad substrate scope, enabling primary, secondary, and even tertiary boronic esters to be employed, and can be used to prepare any of the four possible stereoisomers of a coupled product with vicinal chiral centers. The new method, which combines the simultaneous enantiospecific reaction of a chiral nucleophile with the enantioselective reaction of a chiral electrophile in a single process, offers a solution for stereodivergent cross-coupling of two C(sp3) fragments.
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Affiliation(s)
| | | | - Adam Noble
- School of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 1TS, U.K.
| | - Varinder K. Aggarwal
- School of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 1TS, U.K.
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3
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Pecchini P, Fochi M, Bartoccini F, Piersanti G, Bernardi L. Enantioselective organocatalytic strategies to access noncanonical α-amino acids. Chem Sci 2024; 15:5832-5868. [PMID: 38665517 PMCID: PMC11041364 DOI: 10.1039/d4sc01081g] [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: 02/15/2024] [Accepted: 03/23/2024] [Indexed: 04/28/2024] Open
Abstract
Organocatalytic asymmetric synthesis has evolved over the years and continues to attract the interest of many researchers worldwide. Enantiopure noncanonical amino acids (ncAAs) are valuable building blocks in organic synthesis, medicinal chemistry, and chemical biology. They are employed in the elaboration of peptides and proteins with enhanced activities and/or improved properties compared to their natural counterparts, as chiral catalysts, in chiral ligand design, and as chiral building blocks for asymmetric syntheses of complex molecules, including natural products. The linkage of ncAA synthesis and enantioselective organocatalysis, the subject of this perspective, tries to imitate the natural biosynthetic process. Herein, we present contemporary and earlier developments in the field of organocatalytic activation of simple feedstock materials, providing potential ncAAs with diverse side chains, unique three-dimensional structures, and a high degree of functionality. These asymmetric organocatalytic strategies, useful for forging a wide range of C-C, C-H, and C-N bonds and/or combinations thereof, vary from classical name reactions, such as Ugi, Strecker, and Mannich reactions, to the most advanced concepts such as deracemisation, transamination, and carbene N-H insertion. Concurrently, we present some interesting mechanistic studies/models, providing information on the chirality transfer process. Finally, this perspective highlights, through the diversity of the amino acids (AAs) not selected by nature for protein incorporation, the most generic modes of activation, induction, and reactivity commonly used, such as chiral enamine, hydrogen bonding, Brønsted acids/bases, and phase-transfer organocatalysis, reflecting their increasingly important role in organic and applied chemistry.
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Affiliation(s)
- Pietro Pecchini
- Department of Industrial Chemistry "Toso Montanari", Center for Chemical Catalysis C3 & INSTM RU Bologna V. Gobetti 85 40129 Bologna Italy
| | - Mariafrancesca Fochi
- Department of Industrial Chemistry "Toso Montanari", Center for Chemical Catalysis C3 & INSTM RU Bologna V. Gobetti 85 40129 Bologna Italy
| | - Francesca Bartoccini
- Department of Biomolecular Sciences, University of Urbino Carlo Bo Piazza Rinascimento 6 61029 Urbino PU Italy
| | - Giovanni Piersanti
- Department of Biomolecular Sciences, University of Urbino Carlo Bo Piazza Rinascimento 6 61029 Urbino PU Italy
| | - Luca Bernardi
- Department of Industrial Chemistry "Toso Montanari", Center for Chemical Catalysis C3 & INSTM RU Bologna V. Gobetti 85 40129 Bologna Italy
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4
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Khuntia R, Mahapatra SK, Roy L, Chandra Pan S. Structurally divergent enantioselective synthesis of benzofuran fused azocine derivatives and spiro-cyclopentanone benzofurans enabled by sequential catalysis. Chem Sci 2023; 14:10768-10776. [PMID: 37829006 PMCID: PMC10566461 DOI: 10.1039/d3sc03239f] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Accepted: 09/04/2023] [Indexed: 10/14/2023] Open
Abstract
An important objective in organic synthesis and medicinal chemistry is the capacity to access structurally varied and complex molecules rapidly and affordably from easily available starting materials. Herein, a protocol for the structurally divergent synthesis of benzofuran fused azocine derivatives and spiro-cyclopentanone benzofurans has been developed via chiral bifunctional urea catalyzed reaction between aurone-derived α,β-unsaturated imine and ynone followed by switchable divergent annulation reactions by Lewis base catalysts (DBU and PPh3) with concomitant epimerization. The skeletally diversified products were formed in high yields with high diastereo- and enantioselectivities. Computational analysis with DFT and accurate DLPNO-CCSD(T) has been employed to gain deeper insights into mechanistic intricacies and investigate the role of chiral and Lewis base catalysts in skeletal diversity.
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Affiliation(s)
- Rupkumar Khuntia
- Department of Chemistry, Indian Institute of Technology Guwahati Assam 781039 India https://www.iitg.ac.in/span/
| | - Sanat Kumar Mahapatra
- Institute of Chemical Technology Mumbai IOC Odisha Campus Bhubaneswar Bhubaneswar 751013 India
| | - Lisa Roy
- Institute of Chemical Technology Mumbai IOC Odisha Campus Bhubaneswar Bhubaneswar 751013 India
| | - Subhas Chandra Pan
- Department of Chemistry, Indian Institute of Technology Guwahati Assam 781039 India https://www.iitg.ac.in/span/
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5
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Xie JH, Hou YM, Feng Z, You SL. Stereodivergent Construction of 1,3-Chiral Centers via Tandem Asymmetric Conjugate Addition and Allylic Substitution Reaction. Angew Chem Int Ed Engl 2023; 62:e202216396. [PMID: 36597878 DOI: 10.1002/anie.202216396] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 01/03/2023] [Accepted: 01/04/2023] [Indexed: 01/05/2023]
Abstract
Herein, we report a synthesis of cyclohexanones bearing multi-continuous stereocenters by combining copper-catalyzed asymmetric conjugate addition of dialkylzinc reagents to cyclic enones with iridium-catalyzed asymmetric allylic substitution reaction. Good to excellent yields, diastereoselectivity and enantioselectivity can be obtained. Unlike the stereodivergent construction of adjacent stereocenters (1,2-position) reported in the literature, the current reaction can achieve the stereodivergent construction of nonadjacent stereocenters (1,3-position) by a proper combination of two chiral catalysts with different enantiomers.
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Affiliation(s)
- Jia-Hao Xie
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, 200032, Shanghai, China
| | - Yi-Ming Hou
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, 200032, Shanghai, China
| | - Zuolijun Feng
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, 200032, Shanghai, China
| | - Shu-Li You
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, 200032, Shanghai, China
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6
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Applications of Hantzsch Esters in Organocatalytic Enantioselective Synthesis. Catalysts 2023. [DOI: 10.3390/catal13020419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023] Open
Abstract
Hantzsch esters (1,4-dihydropyridine dicarboxylates) have become, in this century, very versatile reagents for enantioselective organic transformations. They can act as hydride transfer agents to reduce, regioselectively, a variety of multiple bonds, e.g., C=C and C=N, under mild reaction conditions. They are excellent reagents for the dearomatization of heteroaromatic substances, and participate readily in cascade processes. In the last few years, they have also become useful reagents for photoredox reactions. They can participate as sacrificial electron and hydrogen donors and when 4-alkyl or 4-acyl-substituted, they can act as alkyl or acyl radical transfer agents. These last reactions may take place in the presence or absence of a photocatalyst. This review surveys the literature published in this area in the last five years.
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7
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Stereodivergently asymmetric synthesis of chiral phosphorus compounds by synergistic combination of ion-pair catalyst and base. Sci China Chem 2022. [DOI: 10.1007/s11426-022-1337-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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8
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Portolani C, Centonze G, Luciani S, Pellegrini A, Righi P, Mazzanti A, Ciogli A, Sorato A, Bencivenni G. Synthesis of Atropisomeric Hydrazides by One-Pot Sequential Enantio- and Diastereoselective Catalysis. Angew Chem Int Ed Engl 2022; 61:e202209895. [PMID: 36036383 PMCID: PMC9826270 DOI: 10.1002/anie.202209895] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Indexed: 01/11/2023]
Abstract
The first catalytic enantioselective and diastereoselective synthesis of atropisomeric hydrazides was achieved using a sequential catalysis protocol. This strategy is based on a one-pot sequence of two organocatalytic cycles featuring the enamine amination of branched aldehydes followed by nitrogen alkylation under phase-transfer conditions. The resulting axially chiral hydrazides were obtained directly from commercially available reagents in high yields and with good stereocontrol. The permutation of organocatalysts allowed easy access to all stereoisomers, enabling a stereodivergent approach to enantioenriched atropisomeric hydrazides.
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Affiliation(s)
- Chiara Portolani
- Department of Industrial Chemistry “Toso Montanari”Alma Mater Studiorum-University of Bolognaviale del Risorgimento 440136BolognaItaly,Center for Chemical Catalysis, C3Alma Mater Studiorum-University of Bolognaviale del Risorgimento 440136BolognaItaly
| | - Giovanni Centonze
- Department of Industrial Chemistry “Toso Montanari”Alma Mater Studiorum-University of Bolognaviale del Risorgimento 440136BolognaItaly,Center for Chemical Catalysis, C3Alma Mater Studiorum-University of Bolognaviale del Risorgimento 440136BolognaItaly
| | - Sara Luciani
- Department of Industrial Chemistry “Toso Montanari”Alma Mater Studiorum-University of Bolognaviale del Risorgimento 440136BolognaItaly
| | - Andrea Pellegrini
- Department of Industrial Chemistry “Toso Montanari”Alma Mater Studiorum-University of Bolognaviale del Risorgimento 440136BolognaItaly,Center for Chemical Catalysis, C3Alma Mater Studiorum-University of Bolognaviale del Risorgimento 440136BolognaItaly
| | - Paolo Righi
- Department of Industrial Chemistry “Toso Montanari”Alma Mater Studiorum-University of Bolognaviale del Risorgimento 440136BolognaItaly,Center for Chemical Catalysis, C3Alma Mater Studiorum-University of Bolognaviale del Risorgimento 440136BolognaItaly
| | - Andrea Mazzanti
- Department of Industrial Chemistry “Toso Montanari”Alma Mater Studiorum-University of Bolognaviale del Risorgimento 440136BolognaItaly,Center for Chemical Catalysis, C3Alma Mater Studiorum-University of Bolognaviale del Risorgimento 440136BolognaItaly
| | - Alessia Ciogli
- Department of Chemistry and technologies of drugSapienza University of Romepiazzale A. Moro 500185RomeItaly
| | - Andrea Sorato
- Department of Chemistry and technologies of drugSapienza University of Romepiazzale A. Moro 500185RomeItaly
| | - Giorgio Bencivenni
- Department of Industrial Chemistry “Toso Montanari”Alma Mater Studiorum-University of Bolognaviale del Risorgimento 440136BolognaItaly,Center for Chemical Catalysis, C3Alma Mater Studiorum-University of Bolognaviale del Risorgimento 440136BolognaItaly
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9
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Chang X, Cheng X, Liu X, Fu C, Wang W, Wang C. Stereodivergent Construction of 1,4‐Nonadjacent Stereocenters via Hydroalkylation of Racemic Allylic Alcohols Enabled by Copper/Ruthenium Relay Catalysis. Angew Chem Int Ed Engl 2022; 61:e202206517. [DOI: 10.1002/anie.202206517] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Indexed: 12/22/2022]
Affiliation(s)
- Xin Chang
- College of Chemistry and Molecular Sciences Engineering Research Center of Organosilicon Compounds & Materials Ministry of Education Wuhan University Wuhan 430072 China
| | - Xiang Cheng
- College of Chemistry and Molecular Sciences Engineering Research Center of Organosilicon Compounds & Materials Ministry of Education Wuhan University Wuhan 430072 China
| | - Xue‐Tao Liu
- College of Chemistry and Molecular Sciences Engineering Research Center of Organosilicon Compounds & Materials Ministry of Education Wuhan University Wuhan 430072 China
| | - Cong Fu
- College of Chemistry and Molecular Sciences Engineering Research Center of Organosilicon Compounds & Materials Ministry of Education Wuhan University Wuhan 430072 China
| | - Wei‐Yi Wang
- College of Chemistry and Molecular Sciences Engineering Research Center of Organosilicon Compounds & Materials Ministry of Education Wuhan University Wuhan 430072 China
| | - Chun‐Jiang Wang
- College of Chemistry and Molecular Sciences Engineering Research Center of Organosilicon Compounds & Materials Ministry of Education Wuhan University Wuhan 430072 China
- State Key Laboratory of Elemento-organic Chemistry Nankai University Tianjin 300071 China
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10
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Portolani C, Centonze G, Luciani S, Pellegrini A, Righi P, Mazzanti A, Ciogli A, Sorato A, Bencivenni G. Synthesis of Atropisomeric Hydrazides by One‐Pot Sequential Enantio‐ and Diastereoselective Catalysis. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202209895] [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)
- Chiara Portolani
- Università degli Studi di Bologna: Universita degli Studi di Bologna Dipartimento di Chimica Industriale "Toso Montanari" viale del risorgimento 4 40136 bologna ITALY
| | - Giovanni Centonze
- Universita di Bologna Dipartimento di Chimica Industriale "Toso Montanari" viale del risorgimento 4 40136 bologna ITALY
| | - Sara Luciani
- Universita di Bologna Dipartimento di Chimica Industriale "Toso Montanari" viale del risorgimento 4 40136 bologna ITALY
| | - Andrea Pellegrini
- Universita degli Studi di Bologna Dipartimento di Chimica Industriale "Toso Montanari" viale del risorgimento 4 40136 bologna ITALY
| | - Paolo Righi
- Universita di Bologna Dipartimento di Chimica Industriale "Toso Montanari" viale del risorgimento 4 40136 bologna ITALY
| | - Andrea Mazzanti
- Universita di Bologna Dipartimento di Chimica Industriale "Toso Montanari" viale del risorgimento 4 40136 bologna ITALY
| | - Alessia Ciogli
- University of Rome La Sapienza: Universita degli Studi di Roma La Sapienza Department of Chemistry and technologies of drug piazzale A. Moro 5 00185 Roma ITALY
| | - Andrea Sorato
- University of Rome La Sapienza: Universita degli Studi di Roma La Sapienza Department of Chemistry and technologies of drug piazzale aldo moro 5 00185 roma ITALY
| | - Giorgio Bencivenni
- Universita degli Studi di Bologna Dipartimento di Chimica Industriale Department of Industrial Chemistry Viale del Risorgimento n�4 40136 Bologna ITALY
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11
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Bisag GD, Pecchini P, Mancinelli M, Fochi M, Bernardi L. Sulfoxonium Ylides in Aminocatalysis: An Enantioselective Entry to Cyclopropane-Fused Chromanol Structures. Org Lett 2022; 24:5468-5473. [PMID: 35856291 PMCID: PMC9344464 DOI: 10.1021/acs.orglett.2c02204] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
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The 1,1a,2,7b-tetrahydrocyclopropa[c]chromene,
arising from fusion of chromane and cyclopropane rings is the core
of medicinally relevant compounds. Engaging sulfoxonium ylides in
enantioselective aminocatalytic reactions for the first time, a convenient
entry to this scaffold is presented. Several ring-fused derivatives
were obtained in moderate-to-good yields and enantioselectivities
and with perfect diastereoselectivity at the cyclopropane, using an
α,α-diphenylprolinol aminocatalyst. The versatility of
the hemiacetal moiety in the products was leveraged to effect various
synthetic manipulations.
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Affiliation(s)
- Giorgiana Denisa Bisag
- Department of Industrial Chemistry "Toso Montanari", Center for Chemical Catalysis - C3, and INSTM RU Bologna, Alma Mater Studiorum - University of Bologna, V. Risorgimento 4, 40136 Bologna, Italy
| | - Pietro Pecchini
- Department of Industrial Chemistry "Toso Montanari", Center for Chemical Catalysis - C3, and INSTM RU Bologna, Alma Mater Studiorum - University of Bologna, V. Risorgimento 4, 40136 Bologna, Italy
| | - Michele Mancinelli
- Department of Industrial Chemistry "Toso Montanari", Center for Chemical Catalysis - C3, and INSTM RU Bologna, Alma Mater Studiorum - University of Bologna, V. Risorgimento 4, 40136 Bologna, Italy
| | - Mariafrancesca Fochi
- Department of Industrial Chemistry "Toso Montanari", Center for Chemical Catalysis - C3, and INSTM RU Bologna, Alma Mater Studiorum - University of Bologna, V. Risorgimento 4, 40136 Bologna, Italy
| | - Luca Bernardi
- Department of Industrial Chemistry "Toso Montanari", Center for Chemical Catalysis - C3, and INSTM RU Bologna, Alma Mater Studiorum - University of Bologna, V. Risorgimento 4, 40136 Bologna, Italy
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12
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Chang X, Cheng X, Liu XT, Fu C, Wang WY, Wang CJ. Stereodivergent Construction of 1,4‐Nonadjacent Stereocenters via Hydroalkylation of Racemic Allylic Alcohols Enabled by Copper/Ruthenium Relay Catalysis. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202206517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Xin Chang
- Wuhan University College of Chemistry and Molecular Sciences CHINA
| | - Xiang Cheng
- Wuhan University College of Chemistry and Molecular Sciences CHINA
| | - Xue-Tao Liu
- Wuhan University College of Chemistry and Molecular Sciences CHINA
| | - Cong Fu
- Wuhan University College of Chemistry and Molecular Sciences CHINA
| | - Wei-Yi Wang
- Wuhan University College of Chemistry and Molecular Sciences CHINA
| | - Chun-Jiang Wang
- Wuhan University Department of Chemistry Bayi road 430072 wuhan CHINA
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13
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Flury P, Eppler O, Schollmeyer D, Laufer S, Pillaiyar T. 2,2,2-Trifluoroethanol-mediated hydroarylation of fluorinated alkynes with indoles: Application to diindolylmethanes. Arch Pharm (Weinheim) 2022; 355:e2100488. [PMID: 35467043 DOI: 10.1002/ardp.202100488] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 03/28/2022] [Accepted: 03/30/2022] [Indexed: 12/16/2022]
Abstract
A new mild and practically simple alkyne hydroarylation protocol for the synthesis of 3-(indol-3-yl)-3-(trifluoromethyl)acrylic acid esters by the reaction of indole derivatives with ethyl/methyl 4,4,4-trifluoro-3-(indol-3-yl)but-2-enoates in trifluoroethanol was developed. This method has the following advantages: no catalyst, atom economy, high yields, broad substrate scope, and large-scale synthesis. The potential application of this protocol was further demonstrated by the synthesis of a variety of CF3 -substituted synthons and a new class of (un)symmetrical 3,3'-diindolylmethanes with a quaternary carbon core that might be biologically active.
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Affiliation(s)
- Philipp Flury
- Institute of Pharmacy, Pharmaceutical/Medicinal Chemistry and Tübingen Center for Academic Drug Discovery, Eberhard Karls University Tübingen, Tübingen, Germany
| | - Olga Eppler
- Institute of Pharmacy, Pharmaceutical/Medicinal Chemistry and Tübingen Center for Academic Drug Discovery, Eberhard Karls University Tübingen, Tübingen, Germany
| | - Dieter Schollmeyer
- Department of Chemistry, Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Stefan Laufer
- Institute of Pharmacy, Pharmaceutical/Medicinal Chemistry and Tübingen Center for Academic Drug Discovery, Eberhard Karls University Tübingen, Tübingen, Germany
| | - Thanigaimalai Pillaiyar
- Institute of Pharmacy, Pharmaceutical/Medicinal Chemistry and Tübingen Center for Academic Drug Discovery, Eberhard Karls University Tübingen, Tübingen, Germany
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14
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Wu F, Yuan Y, Wu X. Copper‐Catalyzed 1,2‐Trifluoromethylation Carbonylation of Unactivated Alkenes: Efficient Access to β‐Trifluoromethylated Aliphatic Carboxylic Acid Derivatives. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202112609] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Fu‐Peng Wu
- Leibniz-Institut für Katalyse e.V. Albert-Einstein-Straße 29a 18059 Rostock Germany
| | - Yang Yuan
- Leibniz-Institut für Katalyse e.V. Albert-Einstein-Straße 29a 18059 Rostock Germany
| | - Xiao‐Feng Wu
- Leibniz-Institut für Katalyse e.V. Albert-Einstein-Straße 29a 18059 Rostock Germany
- Dalian National Laboratory for Clean Energy Dalian Institute of Chemical Physics Chinese Academy of Sciences 116023 Dalian Liaoning China
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15
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Wu FP, Yuan Y, Wu XF. Copper-Catalyzed 1,2-Trifluoromethylation Carbonylation of Unactivated Alkenes: Efficient Access to β-Trifluoromethylated Aliphatic Carboxylic Acid Derivatives. Angew Chem Int Ed Engl 2021; 60:25787-25792. [PMID: 34622558 DOI: 10.1002/anie.202112609] [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: 09/16/2021] [Revised: 10/05/2021] [Indexed: 12/15/2022]
Abstract
A novel copper-catalyzed carbonylative trifluoromethylation of unactivated alkenes has been developed. A broad range of β-trifluoromethylated carboxylic acid derivatives were prepared in moderate to excellent yields from simple alkenes with excellent regioselectivity. It is noteworthy that ethylene gas, as the simplest olefin, can also be applied directly to obtain β-trifluoromethylated amides and ester. This transformation presents the first example on carbonylative trifluoromethylation of alkenes.
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Affiliation(s)
- Fu-Peng Wu
- Leibniz-Institut für Katalyse e.V., Albert-Einstein-Straße 29a, 18059, Rostock, Germany
| | - Yang Yuan
- Leibniz-Institut für Katalyse e.V., Albert-Einstein-Straße 29a, 18059, Rostock, Germany
| | - Xiao-Feng Wu
- Leibniz-Institut für Katalyse e.V., Albert-Einstein-Straße 29a, 18059, Rostock, Germany.,Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 116023, Dalian, Liaoning, China
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16
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Sonsona IG, Vicenzi A, Guidotti M, Bisag GD, Fochi M, Herrera RP, Bernardi L. Investigation of Squaramide Catalysts in the Aldol Reaction En Route to Funapide. European J Org Chem 2021. [DOI: 10.1002/ejoc.202101254] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Isaac G. Sonsona
- Department of Industrial Chemistry “Toso Montanari” & INSTM RU Bologna Alma Mater Studiorum – University of Bologna V. Risorgimento 4 40136 Bologna Italy
- Departamento de Química Orgánica Laboratorio de Organocatálisis Asimétrica Instituto de Síntesis Química y Catálisis Homogénea (ISQCH) CSIC-Universidad de Zaragoza C/ Pedro Cerbuna 12 50009 Zaragoza Spain
| | - Andrea Vicenzi
- Department of Industrial Chemistry “Toso Montanari” & INSTM RU Bologna Alma Mater Studiorum – University of Bologna V. Risorgimento 4 40136 Bologna Italy
| | - Marco Guidotti
- Department of Industrial Chemistry “Toso Montanari” & INSTM RU Bologna Alma Mater Studiorum – University of Bologna V. Risorgimento 4 40136 Bologna Italy
| | - Giorgiana Denisa Bisag
- Department of Industrial Chemistry “Toso Montanari” & INSTM RU Bologna Alma Mater Studiorum – University of Bologna V. Risorgimento 4 40136 Bologna Italy
| | - Mariafrancesca Fochi
- Department of Industrial Chemistry “Toso Montanari” & INSTM RU Bologna Alma Mater Studiorum – University of Bologna V. Risorgimento 4 40136 Bologna Italy
| | - Raquel P. Herrera
- Departamento de Química Orgánica Laboratorio de Organocatálisis Asimétrica Instituto de Síntesis Química y Catálisis Homogénea (ISQCH) CSIC-Universidad de Zaragoza C/ Pedro Cerbuna 12 50009 Zaragoza Spain
| | - Luca Bernardi
- Department of Industrial Chemistry “Toso Montanari” & INSTM RU Bologna Alma Mater Studiorum – University of Bologna V. Risorgimento 4 40136 Bologna Italy
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