1
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Petcu AS, Lázaro-Milla C, Alonso JM, Almendros P. Unveiling the Use of 1,1-Bis(triflyl)ethylene as CF 3SO 2CH═CH 2 Source with the Assistance of ( n-Bu) 4NF: Synthesis of 3-[(Trifluoromethyl)sulfonyl]cyclobut-1-enes. Org Lett 2024; 26:4560-4565. [PMID: 38767989 PMCID: PMC11148847 DOI: 10.1021/acs.orglett.4c01514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2024] [Revised: 05/14/2024] [Accepted: 05/17/2024] [Indexed: 05/22/2024]
Abstract
Allylic sulfone-embedded cyclobutenes have been prepared in one pot from alkynes. The carbocycle and the alkenyl sulfone moieties were installed through consecutive bis(triflyl)cyclobutenylation of a triple bond and tetra-n-butylammonium fluoride (TBAF)-assisted hydrodesulfonylation of an allylic bis(sulfone). It is noteworthy that 1,1-bis(triflyl)ethylene acts as a CF3SO2CH═CH2 source for the first time.
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Affiliation(s)
- A. Sonia Petcu
- Instituto
de Química Orgánica General, IQOG, CSIC, Juan de la Cierva 3, 28006 Madrid, Spain
- Grupo
de Lactamas y Heterociclos Bioactivos, Departamento de Química
Orgánica, Unidad Asociada al CSIC, Facultad de Química, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - Carlos Lázaro-Milla
- Grupo
de Lactamas y Heterociclos Bioactivos, Departamento de Química
Orgánica, Unidad Asociada al CSIC, Facultad de Química, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - José M. Alonso
- Grupo
de Lactamas y Heterociclos Bioactivos, Departamento de Química
Orgánica, Unidad Asociada al CSIC, Facultad de Química, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - Pedro Almendros
- Instituto
de Química Orgánica General, IQOG, CSIC, Juan de la Cierva 3, 28006 Madrid, Spain
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2
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Kawazoe T, Yanai H, Hagiyama Y, Funabiki K, Matsumoto T. Diverse Synthesis of 2H-Isoindole-Based Polycyclic Aromatic Compounds. Chemistry 2023; 29:e202301703. [PMID: 37493337 DOI: 10.1002/chem.202301703] [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: 05/29/2023] [Indexed: 07/27/2023]
Abstract
1,3-Disubstituted N-aryl-2H-isoindoles have been synthesized by a cascade reaction of divinyl ethers, which are derived from easily available 4-bromoisocoumarins, with substituted anilines in HFIP. This cascade reaction consists of a ring-opening step through addition-elimination mechanism and the following 5-exo-tet type ring-closing step via the intramolecular nucleophilic substitution reaction. Thus obtained 2H-isoindoles have been derivatized to high-order nitrogen-containing polycycles including less accessible benzo[a]ullazines.
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Affiliation(s)
- Teru Kawazoe
- School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan
| | - Hikaru Yanai
- School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan
| | - Yuto Hagiyama
- Department of Chemistry and Biomolecular Science, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan
| | - Kazumasa Funabiki
- Department of Chemistry and Biomolecular Science, Gifu University, 1-1 Yanagido, Gifu, 501-1193, 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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3
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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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4
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Hoshikawa S, Yanai H, Martín-Mejías I, Lázaro-Milla C, Aragoncillo C, Almendros P, Matsumoto T. Synthesis of Polycyclic Aromatic Hydrocarbons Decorated by Fluorinated Carbon Acids/Carbanions. Chemistry 2021; 27:16112-16116. [PMID: 34542205 DOI: 10.1002/chem.202103188] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Indexed: 11/07/2022]
Abstract
The carboarylation reaction of biphenyl-alkynes was successfully triggered by electrophilic attack of 1,1-bis(triflyl)ethylene on the alkyne moiety to give polycyclic aromatic hydrocarbons (PAHs) decorated by superacidic carbon acid functionality. Neutralisation of thus obtained acids with NaHCO3 yielded the corresponding sodium salts, which showed improved solubility in both aqueous and organic solvents.
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Affiliation(s)
- Shoki Hoshikawa
- School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan
| | - Hikaru Yanai
- School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan
| | - Irene Martín-Mejías
- 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, Facultad de Química, Universidad Complutense de Madrid, 28040, Madrid, Spain
| | - Cristina Aragoncillo
- Grupo de Lactamas y Heterociclos Bioactivos, Unidad Asociada al CSIC, Departamento de Química Orgánica, Facultad de Química, 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
| | - Takashi Matsumoto
- School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan
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5
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Lázaro‐Milla C, Almendros P. A Convenient Formal [4+2] Heterocylization Route to Bis(triflyl)tetrahydroquinolines. Chemistry 2021; 27:13534-13538. [PMID: 34369000 PMCID: PMC8519061 DOI: 10.1002/chem.202102254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Indexed: 11/23/2022]
Abstract
We report the sustainable and efficient synthesis of a new type of quinoline derivatives bearing one or two SO2 CF3 groups. The protocol is metal-, catalyst- and irradiation-free, involves the use of readily available and stable precursors, and avoids the formation of side products. Also, the mild conditions of the process allow the tolerance of a wide range of functional groups.
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Affiliation(s)
- Carlos Lázaro‐Milla
- Grupo de Lactamas y Heterociclos BioactivosUnidad Asociada al CSICDepartamento de Química OrgánicaFacultad de Ciencias QuímicasUniversidad Complutense de Madrid28040MadridSpain
| | - Pedro Almendros
- Instituto de Química Orgánica General, IQOGConsejo Superior de Investigaciones CientíficasCSICJuan de la Cierva 328006MadridSpain
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6
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KOTANI A, YANAI H, MATSUMOTO T, HAKAMATA H. p Ka Determination of Strongly Acidic C-H Acids Bearing a (Perfluoroalkyl)sulfonyl Group in Acetonitrile by Means of Voltammetric Reduction of Quinone. ELECTROCHEMISTRY 2021. [DOI: 10.5796/electrochemistry.20-65154] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- Akira KOTANI
- Department of Analytical Chemistry, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences
| | - Hikaru YANAI
- Department of Synthetic Organic Chemistry, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences
| | - Takashi MATSUMOTO
- Department of Synthetic Organic Chemistry, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences
| | - Hideki HAKAMATA
- Department of Analytical Chemistry, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences
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7
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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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8
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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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9
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Lázaro‐Milla C, Macicior J, Yanai H, Almendros P. Trifluorosulfonylation Cascade in Allenols: Stereocontrolled Synthesis of Bis(triflyl)enones. Chemistry 2020; 26:8983-8989. [PMID: 32369226 DOI: 10.1002/chem.202001236] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Indexed: 12/14/2022]
Affiliation(s)
- Carlos Lázaro‐Milla
- Grupo de Lactamas y Heterociclos BioactivosUnidad Asociada al CSIC, Departamento de Química OrgánicaFacultad de Ciencias QuímicasUniversidad Complutense de, Madrid 28040 Madrid Spain
| | - Jon Macicior
- Grupo de Lactamas y Heterociclos BioactivosUnidad Asociada al CSIC, Departamento de Química OrgánicaFacultad de Ciencias QuímicasUniversidad Complutense de, Madrid 28040 Madrid Spain
- Instituto de Química Orgánica General, IQOGConsejo Superior de Investigaciones Científicas, CSIC Juan de la Cierva 3 28006 Madrid Spain
| | - Hikaru Yanai
- School of PharmacyTokyo University of Pharmacy and Life Sciences 1432-1 Horinouchi Hachioji Tokyo 192-0392 Japan
| | - Pedro Almendros
- Instituto de Química Orgánica General, IQOGConsejo Superior de Investigaciones Científicas, CSIC Juan de la Cierva 3 28006 Madrid Spain
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10
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11
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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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12
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Yanai H, Suzuki T, Kleemiss F, Fukaya H, Dobashi Y, Malaspina LA, Grabowsky S, Matsumoto T. Chemical Bonding in Polarised Push–Pull Ethylenes. Angew Chem Int Ed Engl 2019; 58:8839-8844. [DOI: 10.1002/anie.201904176] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Indexed: 01/06/2023]
Affiliation(s)
- Hikaru Yanai
- School of PharmacyTokyo University of Pharmacy and Life Sciences 1432-1 Horinouchi Hachioji Tokyo 192-0392 Japan
| | - Takumi Suzuki
- School of PharmacyTokyo University of Pharmacy and Life Sciences 1432-1 Horinouchi Hachioji Tokyo 192-0392 Japan
| | - Florian Kleemiss
- Institut für Anorganische Chemie und KristallographieFachbereich 2-Biologie/ChemieUniversität Bremen Leobener Str. 3 28359 Bremen Germany
| | - Haruhiko Fukaya
- School of PharmacyTokyo University of Pharmacy and Life Sciences 1432-1 Horinouchi Hachioji Tokyo 192-0392 Japan
| | - Yasuo Dobashi
- School of PharmacyTokyo University of Pharmacy and Life Sciences 1432-1 Horinouchi Hachioji Tokyo 192-0392 Japan
| | - Lorraine A. Malaspina
- Institut für Anorganische Chemie und KristallographieFachbereich 2-Biologie/ChemieUniversität Bremen Leobener Str. 3 28359 Bremen Germany
| | - Simon Grabowsky
- Institut für Anorganische Chemie und KristallographieFachbereich 2-Biologie/ChemieUniversität Bremen Leobener Str. 3 28359 Bremen Germany
| | - Takashi Matsumoto
- School of PharmacyTokyo University of Pharmacy and Life Sciences 1432-1 Horinouchi Hachioji Tokyo 192-0392 Japan
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13
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Yanai H, Suzuki T, Kleemiss F, Fukaya H, Dobashi Y, Malaspina LA, Grabowsky S, Matsumoto T. Chemical Bonding in Polarised Push–Pull Ethylenes. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201904176] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Hikaru Yanai
- School of PharmacyTokyo University of Pharmacy and Life Sciences 1432-1 Horinouchi Hachioji Tokyo 192-0392 Japan
| | - Takumi Suzuki
- School of PharmacyTokyo University of Pharmacy and Life Sciences 1432-1 Horinouchi Hachioji Tokyo 192-0392 Japan
| | - Florian Kleemiss
- Institut für Anorganische Chemie und KristallographieFachbereich 2-Biologie/ChemieUniversität Bremen Leobener Str. 3 28359 Bremen Germany
| | - Haruhiko Fukaya
- School of PharmacyTokyo University of Pharmacy and Life Sciences 1432-1 Horinouchi Hachioji Tokyo 192-0392 Japan
| | - Yasuo Dobashi
- School of PharmacyTokyo University of Pharmacy and Life Sciences 1432-1 Horinouchi Hachioji Tokyo 192-0392 Japan
| | - Lorraine A. Malaspina
- Institut für Anorganische Chemie und KristallographieFachbereich 2-Biologie/ChemieUniversität Bremen Leobener Str. 3 28359 Bremen Germany
| | - Simon Grabowsky
- Institut für Anorganische Chemie und KristallographieFachbereich 2-Biologie/ChemieUniversität Bremen Leobener Str. 3 28359 Bremen Germany
| | - Takashi Matsumoto
- School of PharmacyTokyo University of Pharmacy and Life Sciences 1432-1 Horinouchi Hachioji Tokyo 192-0392 Japan
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15
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Höfler D, Goddard R, Lingnau JB, Nöthling N, List B. A Purely Organic Tricarbanion. Angew Chem Int Ed Engl 2018; 57:8326-8329. [DOI: 10.1002/anie.201803647] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Revised: 04/23/2018] [Indexed: 11/10/2022]
Affiliation(s)
- Denis Höfler
- Max-Planck Institut für Kohlenforschung Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Germany
| | - Richard Goddard
- Max-Planck Institut für Kohlenforschung Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Germany
| | - Julia B. Lingnau
- Max-Planck Institut für Kohlenforschung Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Germany
| | - Nils Nöthling
- Max-Planck Institut für Kohlenforschung Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Germany
| | - Benjamin List
- Max-Planck Institut für Kohlenforschung Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Germany
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16
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Höfler D, Goddard R, Lingnau JB, Nöthling N, List B. Ein rein organisches Tricarbanion. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201803647] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Denis Höfler
- Max-Planck Institut für Kohlenforschung Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Deutschland
| | - Richard Goddard
- Max-Planck Institut für Kohlenforschung Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Deutschland
| | - Julia B. Lingnau
- Max-Planck Institut für Kohlenforschung Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Deutschland
| | - Nils Nöthling
- Max-Planck Institut für Kohlenforschung Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Deutschland
| | - Benjamin List
- Max-Planck Institut für Kohlenforschung Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Deutschland
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17
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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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18
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Alcaide B, Almendros P, Lázaro-Milla C, Delgado-Martínez P. Divergence in Ynone Reactivity: Atypical Cyclization by 3,4-Difunctionalization versus Rare Bis(cyclization). Chemistry 2018; 24:8186-8194. [DOI: 10.1002/chem.201800630] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Indexed: 11/10/2022]
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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19
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Sumii Y, Sugita Y, Tokunaga E, Shibata N. Synthesis of Aryl Triflones through the Trifluoromethanesulfonylation of Benzynes. ChemistryOpen 2018; 7:204-211. [PMID: 29497592 PMCID: PMC5827650 DOI: 10.1002/open.201700204] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2017] [Indexed: 11/05/2022] Open
Abstract
The direct synthesis of aryl triflones, that is, trifluoromethanesulfonyl arenes, was achieved through the trifluoromethanesulfonylation of benzynes. The trifluoromethanesulfonyl group, one of the fluorinated functional groups, is a highly electron-negative and mild lipophilic substituent. Aryl triflones have high potential in the synthesis of bioactive compounds and specialty materials. The treatment of 2-(trimethylsilyl)aryl trifluoromethanesulfonates with cesium fluoride in the presence of 15-crown-5 generated benzynes, which reacted with sodium trifluoromethanesulfinate followed by protonation with tBuOH under heating conditions, provided aryl triflones in moderated to good yields. Both symmetrical and unsymmetrical triflones were nicely accessed under the same reaction conditions. Interestingly, the trifluoromethanesulfonylation of unsymmetrical benzyne precursors proceeded smoothly to furnish corresponding aryl triflones in good yields with good to high regioselectivities. The balance of polarization of electric charge as well as steric hindrance of the benzyne intermediates are central factors to control the outcome of regioselectivity.
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Affiliation(s)
- Yuji Sumii
- Department of Nanopharmaceutical Sciences and Department of Life Science and Applied ChemistryNagoya Institute of TechnologyGokiso-cho, Showa-kuNagoya466–8555Japan
| | - Yutaka Sugita
- Department of Nanopharmaceutical Sciences and Department of Life Science and Applied ChemistryNagoya Institute of TechnologyGokiso-cho, Showa-kuNagoya466–8555Japan
| | - Etsuko Tokunaga
- Department of Nanopharmaceutical Sciences and Department of Life Science and Applied ChemistryNagoya Institute of TechnologyGokiso-cho, Showa-kuNagoya466–8555Japan
| | - Norio Shibata
- Department of Nanopharmaceutical Sciences and Department of Life Science and Applied ChemistryNagoya Institute of TechnologyGokiso-cho, Showa-kuNagoya466–8555Japan
- Institute of Advanced Fluorine-Containing MaterialsZhejiang Normal University688 Yingbin Avenue321004JinhuaChina
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20
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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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21
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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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22
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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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23
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Zhao X, Huang Y, Qing FL, Xu XH. Synthesis of aryl triflones by insertion of arynes into C–SO2CF3 bonds. RSC Adv 2017. [DOI: 10.1039/c6ra26429h] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
A new approach toward the synthesis of aryl triflones was achieved by the formal insertion of arynes into C–SO2CF3 bonds.
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Affiliation(s)
- Xian Zhao
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
- China
| | - Yangen Huang
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
- China
| | - Feng-Ling Qing
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
- China
| | - Xiu-Hua Xu
- Key Laboratory of Organofluorine Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Science
- Shanghai 200032
- China
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24
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Mishima M, Abboud JLM, Fujio M, Suenaga M, Koch HF, Koch JG. Gas-phase Acidities of 2-Aryl-2-chloro-1,1,1-trifluoroethanes and Related Compounds. Experimental and Computational Studies. J PHYS ORG CHEM 2016. [DOI: 10.1002/poc.3576] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Masaaki Mishima
- Institute for Materials Chemistry and Engineering; Kyushu University; Fukuoka 819-0395 Japan
| | - José-Luis M. Abboud
- Institute for Materials Chemistry and Engineering; Kyushu University; Fukuoka 819-0395 Japan
| | - Mizue Fujio
- Institute for Materials Chemistry and Engineering; Kyushu University; Fukuoka 819-0395 Japan
| | - Masahiko Suenaga
- Department of Chemistry, Graduate School of Science; Kyushu University; Fukuoka 819-0395 Japan
| | - Heinz F. Koch
- Department of Chemistry; Ithaca College; Ithaca NY 14850 USA
| | - Judith G. Koch
- Department of Chemistry; Ithaca College; Ithaca NY 14850 USA
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25
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Yanai H, Kobayashi O, Takada K, Isono T, Satoh T, Matsumoto T. Sequential Mukaiyama-Michael reaction induced by carbon acids. Chem Commun (Camb) 2016; 52:3280-3. [PMID: 26734829 DOI: 10.1039/c5cc10115h] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In the presence of a strong carbon acid, the sequential Mukaiyama-Michael reaction using two different Michael acceptors proceeded and the reaction of ketene silyl acetal derived from EtOAc with α-pyrones as primal acceptors yielded the corresponding cyclic ketene silyl acetals, which were reactive enough to undergo the following reaction with second acceptors.
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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.
| | - Osamu Kobayashi
- School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan.
| | - Kenji Takada
- Faculty of Engineering, Hokkaido University, Sapporo, Hokkaido 060-8628, Japan
| | - Takuya Isono
- Faculty of Engineering, Hokkaido University, Sapporo, Hokkaido 060-8628, Japan
| | - Toshifumi Satoh
- Faculty of Engineering, Hokkaido University, Sapporo, Hokkaido 060-8628, 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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26
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Hua LN, Li H, Qing FL, Huang Y, Xu XH. Iodine-mediated regioselective synthesis of vinyl triflones from styrenes with CF3SO2Na. Org Biomol Chem 2016; 14:8443-7. [DOI: 10.1039/c6ob01567k] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The iodine-mediated reaction of styrenes and CF3SO2Na proceeded regioselectively to give various potentially useful vinyl triflones.
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Affiliation(s)
- Li-Na Hua
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
- China
| | - Huan Li
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
- China
| | - Feng-Ling Qing
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
- China
| | - Yangen Huang
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
- China
| | - Xiu-Hua Xu
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
- China
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27
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Huang Z, Wang C, Tokunaga E, Sumii Y, Shibata N. Stereoselective Synthesis of β-Lactam-triflones under Catalyst-Free Conditions. Org Lett 2015; 17:5610-3. [DOI: 10.1021/acs.orglett.5b02827] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Zhongyan Huang
- Department of Nanopharmaceutical
Sciences, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya 466-8555, Japan
| | - Chen Wang
- Department of Nanopharmaceutical
Sciences, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya 466-8555, Japan
| | - Etsuko Tokunaga
- Department of Nanopharmaceutical
Sciences, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya 466-8555, Japan
| | - Yuji Sumii
- Department of Nanopharmaceutical
Sciences, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya 466-8555, Japan
| | - Norio Shibata
- Department of Nanopharmaceutical
Sciences, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya 466-8555, Japan
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28
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Mishima M, Abboud JLM. Substituent effects on acidity of aryl-substituted fluoroalkanes: a computational study. J PHYS ORG CHEM 2015. [DOI: 10.1002/poc.3489] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Masaaki Mishima
- Institute for Materials Chemistry and Engineering; Kyushu University; 744 Motooka Nishi-ku, Fukuoka 819-0395 Japan
| | - José-Luis M. Abboud
- Institute for Materials Chemistry and Engineering; Kyushu University; 744 Motooka Nishi-ku, Fukuoka 819-0395 Japan
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29
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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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30
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Affiliation(s)
- Takahiko Akiyama
- Department
of Chemistry, Faculty of Science, Gakushuin University, 1-5-1 Mejiro, Toshima-ku, Tokyo 171-8588, Japan
| | - Keiji Mori
- Department
of Chemistry, Faculty of Science, Gakushuin University, 1-5-1 Mejiro, Toshima-ku, Tokyo 171-8588, Japan
- Department
of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho Koganei, Tokyo 184-8588, Japan
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31
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32
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Xu XH, Matsuzaki K, Shibata N. Synthetic methods for compounds having CF3-S units on carbon by trifluoromethylation, trifluoromethylthiolation, triflylation, and related reactions. Chem Rev 2014; 115:731-64. [PMID: 25121343 DOI: 10.1021/cr500193b] [Citation(s) in RCA: 836] [Impact Index Per Article: 83.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Xiu-Hua Xu
- Department of Nanopharmaceutical Science and Department of Frontier Materials, Nagoya Institute of Technology , Gokiso, Showa-ku, Nagoya 466-8555, Japan
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33
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Zhang M, Sonoda T, Shiota Y, Mishima M, Yanai H, Fujita M, Taguchi T. Gas-phase acidity of 1,1-bis(trifluoromethanesulfonyl)propane derivatives and related compounds: experimental and theoretical studies. J PHYS ORG CHEM 2014. [DOI: 10.1002/poc.3304] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Min Zhang
- Institute for Materials Chemistry and Engineering; Kyushu University; Hakozaki, Higashi-ku Fukuoka 812-8581 Japan
| | - Takaaki Sonoda
- Institute for Materials Chemistry and Engineering; Kyushu University; Hakozaki, Higashi-ku Fukuoka 812-8581 Japan
| | - Yoshihito Shiota
- Institute for Materials Chemistry and Engineering; Kyushu University; Hakozaki, Higashi-ku Fukuoka 812-8581 Japan
| | - Masaaki Mishima
- Institute for Materials Chemistry and Engineering; Kyushu University; Hakozaki, Higashi-ku Fukuoka 812-8581 Japan
| | - Hikaru Yanai
- School of Pharmacy; Tokyo University of Pharmacy and Life Sciences; 1432-1 Horinouchi Hachioji Tokyo 192-0392 Japan
| | - Masaya Fujita
- School of Pharmacy; Tokyo University of Pharmacy and Life Sciences; 1432-1 Horinouchi Hachioji Tokyo 192-0392 Japan
| | - Takeo Taguchi
- School of Pharmacy; Tokyo University of Pharmacy and Life Sciences; 1432-1 Horinouchi Hachioji Tokyo 192-0392 Japan
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34
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Yanai H, Egawa S, Yamada K, Ono J, Aoki M, Matsumoto T, Taguchi T. 1,1-Bis(triflyl)alkadienes: Easy-To-Handle Building Blocks for Strongly Acidic Carbon Acids. ASIAN J ORG CHEM 2014. [DOI: 10.1002/ajoc.201402010] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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35
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Yanai H, Taguchi T. Synthesis and Catalysis of Strong Carbon Acids Containing Bis(triflyl)methyl Group. J SYN ORG CHEM JPN 2014. [DOI: 10.5059/yukigoseikyokaishi.72.158] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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36
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Yanai H, Fujita M, Takahashi A, Zhang M, Mishima M, Kotani A, Matsumoto T, Taguchi T. Synthesis of δ-oxo-1,1-bis(triflyl)alkanes and their acidities. Molecules 2013; 18:15531-40. [PMID: 24352012 PMCID: PMC6269671 DOI: 10.3390/molecules181215531] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2013] [Revised: 12/03/2013] [Accepted: 12/11/2013] [Indexed: 11/22/2022] Open
Abstract
The reaction of 1,1-bis(triflyl)ethylene generated in situ with enolizable carbonyls yielded δ-oxo-1,1-bis(triflyl)alkane derivatives. Their acidities in both the gas and solution phases were determined.
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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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37
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Yanai H, Ishii N, Matsumoto T, Taguchi T. Organic Acid Catalysts in Reactions of Lactones with Silicon Enolates. ASIAN J ORG CHEM 2013. [DOI: 10.1002/ajoc.201300157] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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38
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Yanai H, Egawa S, Taguchi T. Reductive alkylation of bis(triflyl)methane through self-promoting formation of easily isolable 1,1-bis(triflyl)alkenes. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.02.039] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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39
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Yanai H, Takahashi Y, Fukaya H, Dobashi Y, Matsumoto T. 2-(Pyridinium-1-yl)-1,1-bis(triflyl)ethanides: structural behaviour and availability as bis(triflyl)ethylating reagents. Chem Commun (Camb) 2013; 49:10091-3. [DOI: 10.1039/c3cc46171h] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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40
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Yanai H, Yoshino T, Fujita M, Fukaya H, Kotani A, Kusu F, Taguchi T. Synthesis, Characterization, and Applications of Zwitterions Containing a Carbanion Moiety. Angew Chem Int Ed Engl 2012; 52:1560-3. [DOI: 10.1002/anie.201208809] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2012] [Indexed: 11/11/2022]
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41
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Yanai H, Yoshino T, Fujita M, Fukaya H, Kotani A, Kusu F, Taguchi T. Synthesis, Characterization, and Applications of Zwitterions Containing a Carbanion Moiety. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201208809] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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42
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Yanai H, Taguchi T. Organic acid induced olefination reaction of lactones. Chem Commun (Camb) 2012; 48:8967-9. [DOI: 10.1039/c2cc33606e] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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