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Yanai H. Development of Stable Carbanionic Substituents. CHEM REC 2023; 23:e202300076. [PMID: 37058109 DOI: 10.1002/tcr.202300076] [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: 02/28/2023] [Revised: 03/29/2023] [Indexed: 04/15/2023]
Abstract
During the past decade, carbon (C-H) acids depicted as 'Tf2 CHR' (Tf=CF3 SO2 ) have attracted considerable attention as a new class of superacidic molecules, which show stronger acidity than sulfuric acid molecules. In recent years, the author has developed a synthetic methodology for such strong acids and has opened the door to chemistry of highly stabilised carbanions [Tf2 CR]- , which are the conjugate bases of the carbon acids. These carbanion-containing salts are stable and easy-to-handle species. Our efforts have revealed that the ionic but lipophilic characters of this type of carbanion can be used as a unique 'substituent' for increasing both the water solubility and the lipophilicity of organic compounds. This Personal Account provides an overview of our [Tf2 CR]- chemistry, including its synthesis, structure, reactivity, and applications.
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Affiliation(s)
- Hikaru Yanai
- School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan
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2
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Abstract
1,2,3-triazoles represent a functional heterocyclic core that has been at the center of modern organic chemistry since the beginning of click chemistry. Being a versatile framework, such an aromatic ring can be observed in uncountable molecules useful in medicine and photochemistry, just to name a few. This review summarizes the progress achieved in their synthesis from 2015 to today, with particular emphasis on the development of new catalytic and eco-compatible approaches. In doing so, we subdivided the report based on their degree of functionalization and, for each subparagraph, we outlined the role of the catalyst employed.
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3
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Yanai H, Hoshikawa S, Moriiwa Y, Shoji A, Yanagida A, Matsumoto T. A Fluorinated Carbanionic Substituent for Improving Water Solubility and Lipophilicity of Fluorescent Dyes. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202012764] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Hikaru Yanai
- School of Pharmacy Tokyo University of Pharmacy and Life Sciences 1432-1 Horinouchi, Hachioji Tokyo 192-0392 Japan
| | - Shoki Hoshikawa
- School of Pharmacy Tokyo University of Pharmacy and Life Sciences 1432-1 Horinouchi, Hachioji Tokyo 192-0392 Japan
| | - Yukiko Moriiwa
- School of Pharmacy Tokyo University of Pharmacy and Life Sciences 1432-1 Horinouchi, Hachioji Tokyo 192-0392 Japan
| | - Atsushi Shoji
- School of Pharmacy Tokyo University of Pharmacy and Life Sciences 1432-1 Horinouchi, Hachioji Tokyo 192-0392 Japan
| | - Akio Yanagida
- School of Pharmacy Tokyo University of Pharmacy and Life Sciences 1432-1 Horinouchi, Hachioji Tokyo 192-0392 Japan
| | - Takashi Matsumoto
- School of Pharmacy Tokyo University of Pharmacy and Life Sciences 1432-1 Horinouchi, Hachioji Tokyo 192-0392 Japan
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Yanai H, Hoshikawa S, Moriiwa Y, Shoji A, Yanagida A, Matsumoto T. A Fluorinated Carbanionic Substituent for Improving Water Solubility and Lipophilicity of Fluorescent Dyes. Angew Chem Int Ed Engl 2021; 60:5168-5172. [PMID: 33245605 DOI: 10.1002/anie.202012764] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2020] [Revised: 11/02/2020] [Indexed: 12/21/2022]
Abstract
Installation of a carbanionic substituent, that is strongly stabilized by two (trifluoromethyl)sulfonyl (Tf=SO2 CF3 ) groups, into several fluorescence dyes including boron-dipyrromethenes (BODIPYs), fluoresceins, and aminocoumarins has been achieved by the 2,2-bis(triflyl)ethylation reaction of the dye frameworks with highly electrophilic Tf2 C=CH2 , followed by neutralization with NaHCO3 . Despite the contradiction between water solubility and lipophilicity, the carbanion-decorated dyes thus obtained showed significant enhancement of not only water solubility but also lipophilicity. This work clearly demonstrates that the fluorinated, highly stabilized carbanionic substituent is a new option for controlling the macroscopic property of chemical materials.
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Affiliation(s)
- Hikaru Yanai
- School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan
| | - Shoki Hoshikawa
- School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan
| | - Yukiko Moriiwa
- School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan
| | - Atsushi Shoji
- School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan
| | - Akio Yanagida
- School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan
| | - Takashi Matsumoto
- School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan
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Yoshida S. Sequential conjugation methods based on triazole formation and related reactions using azides. Org Biomol Chem 2020; 18:1550-1562. [PMID: 32016260 DOI: 10.1039/c9ob02698c] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The recent remarkable progress in azide chemistry has realized sequential conjugation methods with selective 1,2,3-triazole formation. On the basis of the diverse reactivities of azides and azidophiles, including terminal alkynes and cyclooctynes, various selective reactions to furnish triazoles and a wide range of platform molecules, such as diynes, diazides, triynes, and triazides, have been developed so far for bis- and tris(triazole) syntheses. This review highlights recent transformations involving selective triazole formation, allowing the efficient preparation of unsymmetric bis- and tris(triazole)s using diverse platform molecules.
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Affiliation(s)
- Suguru Yoshida
- Laboratory of Chemical Bioscience, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University (TMDU), 2-3-10 Kanda-Surugadai, Chiyoda-ku, Tokyo 101-0062, Japan.
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6
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Martín-Mejías I, Aragoncillo C, Yanai H, Hoshikawa S, Fujimoto Y, Matsumoto T, Almendros P. A catalyst-free bis(triflyl)ethylation/benzannulation reaction: rapid access to carbazole-based superacidic carbon acids from alkynols. Chem Commun (Camb) 2020; 56:1795-1798. [DOI: 10.1039/c9cc08930f] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
A metal- and irradiation-free preparation of Tf2CHCH2-decorated carbazoles from 1-(indol-2-yl)but-3-yn-1-ols under mild conditions with a 2-fluoropyridinium salt as the Tf2CCH2 source has been attained in a straightforward and selective manner.
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Affiliation(s)
| | - Cristina Aragoncillo
- Grupo de Lactamas y Heterociclos Bioactivos
- Departamento de Química Orgánica
- Unidad Asociada al CSIC
- Facultad de Química
- Universidad Complutense de Madrid
| | - Hikaru Yanai
- School of Pharmacy
- Tokyo University of Pharmacy and Life Sciences
- Hachioji
- Japan
| | - Shoki Hoshikawa
- School of Pharmacy
- Tokyo University of Pharmacy and Life Sciences
- Hachioji
- Japan
| | - Yuuki Fujimoto
- School of Pharmacy
- Tokyo University of Pharmacy and Life Sciences
- Hachioji
- Japan
| | - Takashi Matsumoto
- School of Pharmacy
- Tokyo University of Pharmacy and Life Sciences
- Hachioji
- Japan
| | - Pedro Almendros
- Instituto de Química Orgánica General
- IQOG-CSIC
- 28006-Madrid
- Spain
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7
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Alcaide B, Almendros P, Lázaro-Milla C. Convenient Access to 2,3-Disubstituted-cyclobut-2-en-1-ones under Suzuki Conditions and Their Synthetic Utility. Chemistry 2019; 25:7547-7552. [PMID: 30840329 DOI: 10.1002/chem.201900690] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Indexed: 11/05/2022]
Abstract
A regioselective synthesis of general applicability has been designed for the one-pot preparation of 2,3-disubstituted-cyclobutenones from iodoalkynes through cyclobutenylation, Suzuki CC coupling, and ketone formation. This one-pot methodology has been applied to the selective synthesis of an orally active cyclooxygenase II inhibitor. Furthermore, the obtained cyclobut-2-en-1-ones were used as synthons in several transformations, such as, the preparation of β-lactams, phthalazines, cyclohexa-2,5-dien-1-ones, and cyclopent-3-en-1-ones.
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Affiliation(s)
- Benito Alcaide
- Grupo de Lactamas y Heterociclos Bioactivos, Unidad Asociada al CSIC, Departamento de Química Orgánica I, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, 28040, Madrid, Spain
| | - Pedro Almendros
- Instituto de Química Orgánica General, IQOG, Consejo Superior de Investigaciones Científicas, CSIC, Juan de la Cierva 3, 28006, Madrid, Spain
| | - Carlos Lázaro-Milla
- Grupo de Lactamas y Heterociclos Bioactivos, Unidad Asociada al CSIC, Departamento de Química Orgánica I, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, 28040, Madrid, Spain
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Ni J, Jiang Y, An Z, Lan J, Yan R. A convenient access to allylic triflones with allenes and triflyl chloride in the presence of (EtO)2P(O)H. Chem Commun (Camb) 2019; 55:7343-7345. [PMID: 31169835 DOI: 10.1039/c9cc03096d] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
A simple method for the preparation of allylic triflones from allenes and triflyl chloride in the presence of (EtO)2P(O)H has been developed.
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Affiliation(s)
- Jixiang Ni
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou
- People's Republic of China
| | - Yong Jiang
- School of Chemistry and Chemical Engineering
- Yangtze Normal University
- Chongqing
- China
| | - Zhenyu An
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou
- People's Republic of China
| | - Jingfeng Lan
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou
- People's Republic of China
| | - Rulong Yan
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou
- People's Republic of China
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Cao S, Liu Y, Hu C, Wen C, Wan J. Alkyl Propiolates Participated [3+2] Annulation for the Switchable Synthesis of 1,5‐ and 1,4‐Disubstituted 1,2,3‐Triazoles Containing Ester Side Chain. ChemCatChem 2018. [DOI: 10.1002/cctc.201801366] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Shuo Cao
- College of Chemistry and Chemical EngineeringJiangxi Normal University Nanchang 330022 P. R. China
| | - Yunyun Liu
- College of Chemistry and Chemical EngineeringJiangxi Normal University Nanchang 330022 P. R. China
| | - Changfeng Hu
- College of Basic Medical SciencesZhejiang Chinese Medical University Hangzhou 310053 P. R. China
| | - Chengping Wen
- College of Basic Medical SciencesZhejiang Chinese Medical University Hangzhou 310053 P. R. China
| | - Jie‐Ping Wan
- College of Chemistry and Chemical EngineeringJiangxi Normal University Nanchang 330022 P. R. China
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10
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Yanai H, Almendros P, Takahashi S, Lázaro-Milla C, Alcaide B, Matsumoto T. Synthesis and Characterization of Stable Phosphorus Carbabetaines. Chem Asian J 2018; 13:1956-1961. [PMID: 29771003 DOI: 10.1002/asia.201800769] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Indexed: 12/25/2022]
Abstract
Phosphorus 1,3- and 1,4-carbabetaines with 'P(+)-C-C(-)' and 'P(+)-C-C-C(-)' structures, respectively, in which the carbanion moiety was significantly stabilized by two trifluoromethylsulfonyl groups, have been synthesized and characterized. Analysis of their X-ray crystal structures revealed that any attractive interactions between the anionic and cationic moieties were negligibly weak. This result was corroborated by using natural bond orbital (NBO) and Bader's quantum theory of atoms in molecules (QTAIM) models. In contrast, performing the same analysis of a known 1,3-carbabetaine equivalent, which can be drawn as a 'P(+)-C-C=C-O(-)' resonance structure, revealed pronounced charge-transfer interactions between the anionic and cationic moieties.
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Affiliation(s)
- Hikaru Yanai
- School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan
| | - Pedro Almendros
- Instituto de Química Orgánica General, Consejo Superior de Investigaciones Científicas (IQOG-CSIC), Juan de la Cierva 3, 28006, Madrid, Spain
| | - Saori Takahashi
- School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan
| | - Carlos Lázaro-Milla
- Grupo de Lactamas y Heterociclos Bioactivos, Departamento de Química Orgánica I, Unidad Asociada al CSIC, Facultad de Química, Universidad Complutense de Madrid, 28040, Madrid, Spain
| | - Benito Alcaide
- Grupo de Lactamas y Heterociclos Bioactivos, Departamento de Química Orgánica I, Unidad Asociada al CSIC, Facultad de Química, Universidad Complutense de Madrid, 28040, Madrid, Spain
| | - Takashi Matsumoto
- School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan
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Almendros P, Yanai H, Hoshikawa S, Aragoncillo C, Lázaro-Milla C, Toledano-Pinedo M, Matsumoto T, Alcaide B. Transition metal-free controlled synthesis of bis[(trifluoromethyl)sulfonyl]ethyl-decorated heterocycles. Org Chem Front 2018. [DOI: 10.1039/c8qo00955d] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The metal- and irradiation-free C–H bis(triflyl)ethylation reactions of a variety of heterocycles including marketed drugs have been accomplished.
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Affiliation(s)
- Pedro Almendros
- Instituto de Química Orgánica General
- Consejo Superior de Investigaciones Científicas
- IQOG-CSIC
- 28006 Madrid
- Spain
| | - Hikaru Yanai
- School of Pharmacy
- Tokyo University of Pharmacy and Life Sciences
- Tokyo 192-0392
- Japan
| | - Shoki Hoshikawa
- School of Pharmacy
- Tokyo University of Pharmacy and Life Sciences
- Tokyo 192-0392
- Japan
| | - Cristina Aragoncillo
- Grupo de Lactamas y Heterociclos Bioactivos
- Departamento de Química Orgánica I
- Unidad Asociada al CSIC
- Facultad de Química
- Universidad Complutense de Madrid
| | - Carlos Lázaro-Milla
- Grupo de Lactamas y Heterociclos Bioactivos
- Departamento de Química Orgánica I
- Unidad Asociada al CSIC
- Facultad de Química
- Universidad Complutense de Madrid
| | - Mireia Toledano-Pinedo
- Grupo de Lactamas y Heterociclos Bioactivos
- Departamento de Química Orgánica I
- Unidad Asociada al CSIC
- Facultad de Química
- Universidad Complutense de Madrid
| | - Takashi Matsumoto
- School of Pharmacy
- Tokyo University of Pharmacy and Life Sciences
- Tokyo 192-0392
- Japan
| | - Benito Alcaide
- Grupo de Lactamas y Heterociclos Bioactivos
- Departamento de Química Orgánica I
- Unidad Asociada al CSIC
- Facultad de Química
- Universidad Complutense de Madrid
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12
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Alcaide B, Almendros P, Lázaro-Milla C. Regioselective Synthesis of Heteroatom-Functionalized Cyclobutene-triflones and Cyclobutenones. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700492] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Benito Alcaide
- Grupo de Lactamas y Heterociclos Bioactivos; Departamento de Química Orgánica I; Unidad Asociada al CSIC; Facultad de Química; Universidad Complutense de Madrid; 28040 Madrid Spain
| | - Pedro Almendros
- Instituto de Química Orgánica General; Consejo Superior de Investigaciones Científicas; IQOG-CSIC; Juan de la Cierva 3 28006 Madrid Spain
| | - Carlos Lázaro-Milla
- Grupo de Lactamas y Heterociclos Bioactivos; Departamento de Química Orgánica I; Unidad Asociada al CSIC; Facultad de Química; Universidad Complutense de Madrid; 28040 Madrid Spain
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13
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Yanai H, Takahashi R, Takahashi Y, Kotani A, Hakamata H, Matsumoto T. 2-(Pyridinium-1-yl)-1,1-bis(perfluoroalkylsulfonyl)ethan-1-ide: A Practical Reagent for Synthesis of Strongly Acidic 1,1-Bis(perfluoroalkylsulfonyl)alkanes. Chemistry 2017; 23:8203-8211. [DOI: 10.1002/chem.201700515] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Indexed: 11/11/2022]
Affiliation(s)
- Hikaru Yanai
- School of Pharmacy; Tokyo University of Pharmacy and Life Sciences; 1432-1 Horinouchi, Hachioji Tokyo 192-0392 Japan
| | - Ryuta Takahashi
- School of Pharmacy; Tokyo University of Pharmacy and Life Sciences; 1432-1 Horinouchi, Hachioji Tokyo 192-0392 Japan
| | - Yoichi Takahashi
- School of Pharmacy; Tokyo University of Pharmacy and Life Sciences; 1432-1 Horinouchi, Hachioji Tokyo 192-0392 Japan
| | - Akira Kotani
- School of Pharmacy; Tokyo University of Pharmacy and Life Sciences; 1432-1 Horinouchi, Hachioji Tokyo 192-0392 Japan
| | - Hideki Hakamata
- School of Pharmacy; Tokyo University of Pharmacy and Life Sciences; 1432-1 Horinouchi, Hachioji Tokyo 192-0392 Japan
| | - Takashi Matsumoto
- School of Pharmacy; Tokyo University of Pharmacy and Life Sciences; 1432-1 Horinouchi, Hachioji Tokyo 192-0392 Japan
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14
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Direct Metal-Free Entry to Aminocyclobutenes or Aminocyclobutenols from Ynamides: Synthetic Applications. Chemistry 2016; 22:8998-9005. [DOI: 10.1002/chem.201601044] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Indexed: 01/28/2023]
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Lima CGS, Ali A, van Berkel SS, Westermann B, Paixão MW. Emerging approaches for the synthesis of triazoles: beyond metal-catalyzed and strain-promoted azide-alkyne cycloaddition. Chem Commun (Camb) 2016; 51:10784-96. [PMID: 26066359 DOI: 10.1039/c5cc04114g] [Citation(s) in RCA: 92] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Metal-free 1,3-dipolar cycloaddition reactions have proven to be a powerful tool for the assembly of key heterocycles, in particular diversely functionalized 1,2,3-triazoles. A number of metal-free (3+2)-cycloaddition approaches have been developed up to date with the aim to circumvent the use of metal catalysts allowing these reactions to take place in biological systems without perturbation of the naturally occurring processes. This feature article specifically provides an overview of emerging metal-free synthetic routes, and their mechanistic features, in the formation of functionalized 1,2,3-triazoles.
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Affiliation(s)
- Carolina G S Lima
- Department of Chemistry, Universidade Federal de São Carlos (UFSCar), São Carlos, SP, Brazil.
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16
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Yang ZW, Zhang Q, Jiang YY, Li L, Xiao B, Fu Y. Palladium-catalyzed directing group-assisted C8-triflation of naphthalenes. Chem Commun (Camb) 2016; 52:6709-11. [DOI: 10.1039/c6cc01732k] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
The transition-metal-catalyzed direct triflation of naphthyl amides and naphthyl ketones has been accomplished for the first time.
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Affiliation(s)
- Zhi-Wei Yang
- Hefei National Laboratory for Physical Sciences at the Microscale
- iChEM
- CAS Key Laboratory of Urban Pollutant Conversion
- Anhui Province Key Laboratory of Biomass Clean Energy
- Department of Chemistry
| | - Qi Zhang
- Hefei National Laboratory for Physical Sciences at the Microscale
- iChEM
- CAS Key Laboratory of Urban Pollutant Conversion
- Anhui Province Key Laboratory of Biomass Clean Energy
- Department of Chemistry
| | - Yuan-Ye Jiang
- Hefei National Laboratory for Physical Sciences at the Microscale
- iChEM
- CAS Key Laboratory of Urban Pollutant Conversion
- Anhui Province Key Laboratory of Biomass Clean Energy
- Department of Chemistry
| | - Lei Li
- Hefei National Laboratory for Physical Sciences at the Microscale
- iChEM
- CAS Key Laboratory of Urban Pollutant Conversion
- Anhui Province Key Laboratory of Biomass Clean Energy
- Department of Chemistry
| | - Bin Xiao
- Hefei National Laboratory for Physical Sciences at the Microscale
- iChEM
- CAS Key Laboratory of Urban Pollutant Conversion
- Anhui Province Key Laboratory of Biomass Clean Energy
- Department of Chemistry
| | - Yao Fu
- Hefei National Laboratory for Physical Sciences at the Microscale
- iChEM
- CAS Key Laboratory of Urban Pollutant Conversion
- Anhui Province Key Laboratory of Biomass Clean Energy
- Department of Chemistry
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17
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Yanai H. Chemistry of Fluorinated Carbon Acids: Synthesis, Physicochemical Properties, and Catalysis. Chem Pharm Bull (Tokyo) 2015; 63:649-62. [PMID: 26329858 DOI: 10.1248/cpb.c15-00487] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The bis[(trifluoromethyl)sulfonyl]methyl (Tf2CH; Tf=SO2CF3) group is known to be one of the strongest carbon acid functionalities. The acidity of such carbon acids in the gas phase is stronger than that of sulfuric acid. Our recent investigations have demonstrated that this type of carbon acids work as novel acid catalysts. In this paper, recent achievements in carbon acid chemistry by our research group, including synthesis, physicochemical properties, and catalysis, are summarized.
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Affiliation(s)
- Hikaru Yanai
- School of Pharmacy, Tokyo University of Pharmacy and Life Sciences
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18
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Saoudi B, Debache A, Soulé JF, Doucet H. Synthesis of heteroarenes dyads from heteroarenes and heteroarylsulfonyl chlorides via Pd-catalyzed desulfitative C–H bond heteroarylations. RSC Adv 2015. [DOI: 10.1039/c5ra07762a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
We report palladium-catalyzed synthesis of heteroarenes dyads using heteroarylsulfonyl chlorides as coupling partners. The C–H bond functionalizations occurred at α-position with pyrroles and furans, while at β-position with thiophenes.
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Affiliation(s)
- Besma Saoudi
- Institut des Sciences Chimiques de Rennes
- UMR 6226 CNRS-Université de Rennes 1 “Organométalliques, Matériaux et Catalyse”
- Campus de Beaulieu
- 35042 Rennes
- France
| | - Adbelmadjid Debache
- Laboratoire de synthèse des molecules à intérêt biologique Université Mentouri-Constantine
- 25000 Constantine
- Algeria
| | - Jean-François Soulé
- Institut des Sciences Chimiques de Rennes
- UMR 6226 CNRS-Université de Rennes 1 “Organométalliques, Matériaux et Catalyse”
- Campus de Beaulieu
- 35042 Rennes
- France
| | - Henri Doucet
- Institut des Sciences Chimiques de Rennes
- UMR 6226 CNRS-Université de Rennes 1 “Organométalliques, Matériaux et Catalyse”
- Campus de Beaulieu
- 35042 Rennes
- France
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