1
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Soda AK, Chinthapally KP, C S PK, Chilaka SK, Madabhushi S. Lewis acid catalyzed spiro annulation of ( Z)-3-amino-acrylates with 2-amino arylbenzamides: one-pot synthesis of pyrrole-quinazoline hybrids. RSC Adv 2023; 13:15001-15005. [PMID: 37200694 PMCID: PMC10187044 DOI: 10.1039/d3ra02639f] [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: 04/21/2023] [Accepted: 04/27/2023] [Indexed: 05/20/2023] Open
Abstract
The one-pot domino reaction of ethyl (Z)-3-amino-3-phenylacrylates with 2-amino-N-alkyl/arylbenzamides under Lewis acid catalysis was described as an effective way to construct novel spiro [pyrrole-3,2'-quinazoline] carboxylate derivatives. By combining substituted alkyl/aryl amides with spiro annulated 1H-pyrrole-2,3-diones, this method provides a novel way for producing spiro pyrrole derivatives in good to excellent yields. The current procedure has a number of benefits, including quicker reaction times, a broad tolerance range for functional groups, and the ability to synthesize 2,3-dihydroquinazolin-4(1H)-ones that are of biological importance and take part in organic transformations. This is the first use of molecular hybridization involving linking with pyrrole derivatives and dihydroquinazolin-4(1H)-ones.
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Affiliation(s)
- Anil Kumar Soda
- Fluoro-Agrochemicals Department, CSIR-Indian Institute of Chemical Technology Hyderabad-500007 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad-201002 India
| | | | - Phani Krishna C S
- Fluoro-Agrochemicals Department, CSIR-Indian Institute of Chemical Technology Hyderabad-500007 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad-201002 India
| | - Sai Krishna Chilaka
- Fluoro-Agrochemicals Department, CSIR-Indian Institute of Chemical Technology Hyderabad-500007 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad-201002 India
| | - Sridhar Madabhushi
- Fluoro-Agrochemicals Department, CSIR-Indian Institute of Chemical Technology Hyderabad-500007 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad-201002 India
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2
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Muller C, Horký F, Vayer M, Golushko A, Lebœuf D, Moran J. Synthesis of functionalised isochromans: epoxides as aldehyde surrogates in hexafluoroisopropanol. Chem Sci 2023; 14:2983-2989. [PMID: 36937595 PMCID: PMC10016621 DOI: 10.1039/d2sc06692k] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Accepted: 02/13/2023] [Indexed: 02/17/2023] Open
Abstract
The oxa-Pictet-Spengler reaction is arguably the most straightforward and modular way to construct the privileged isochroman motif, but its scope is largely limited to benzaldehyde derivatives and to electron-rich β-phenylethanols that lack substitution along the aliphatic chain. Here we describe a variant of this reaction starting from an epoxide, rather than an aldehyde, that greatly expands the scope and rate of the reaction (<1 h, 20 °C). Besides facilitating the initial Meinwald rearrangement, the use of hexafluoroisopropanol (HFIP) as a solvent expands the electrophile scope to include partners equivalent to ketones, aliphatic aldehydes, and phenylacetyl aldehydes, and the nucleophile scope to include modestly electronically deactivated and highly substituted β-phenylethanols. The products could be easily further derivatised in the same pot by subsequent ring-opening, reductions, and intra- and intermolecular Friedel-Crafts reactions, also in HFIP. Finally, owing to the high pharmacological relevance of the isochroman motif, the synthesis of drug analogues was demonstrated.
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Affiliation(s)
- Cyprien Muller
- Institut de Science et d'Ingénierie Supramoléculaires (ISIS), CNRS UMR 7006, Université de Strasbourg 8 allée Gaspard Monge 67000 Strasbourg France
| | - Filip Horký
- Institut de Science et d'Ingénierie Supramoléculaires (ISIS), CNRS UMR 7006, Université de Strasbourg 8 allée Gaspard Monge 67000 Strasbourg France
| | - Marie Vayer
- Institut de Science et d'Ingénierie Supramoléculaires (ISIS), CNRS UMR 7006, Université de Strasbourg 8 allée Gaspard Monge 67000 Strasbourg France
| | - Andrei Golushko
- Institut de Science et d'Ingénierie Supramoléculaires (ISIS), CNRS UMR 7006, Université de Strasbourg 8 allée Gaspard Monge 67000 Strasbourg France
| | - David Lebœuf
- Institut de Science et d'Ingénierie Supramoléculaires (ISIS), CNRS UMR 7006, Université de Strasbourg 8 allée Gaspard Monge 67000 Strasbourg France
| | - Joseph Moran
- Institut de Science et d'Ingénierie Supramoléculaires (ISIS), CNRS UMR 7006, Université de Strasbourg 8 allée Gaspard Monge 67000 Strasbourg France
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3
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Du F, Wang M, Wang L, Li Y, Wang Y, Deng W, Yan W, Jin X. Catalytic Conversion of Polyoxymethylene with Bio-Derived Substrates: Kinetic Modeling on Solvent Enhancement Effect and Experimental Studies on Reaction Mechanism. Chem Eng Sci 2023. [DOI: 10.1016/j.ces.2023.118670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2023]
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4
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Nguyen MT, Le N, Nguyen HT, Luong TDV, Nguyen VKT, Kawazoe Y, Tran PH, Pham-Tran NN. Mechanism of Friedel-Crafts Acylation Using Metal Triflate in Deep Eutectic Solvents: An Experimental and Computational Study. ACS OMEGA 2023; 8:271-278. [PMID: 36643563 PMCID: PMC9835085 DOI: 10.1021/acsomega.2c03944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Accepted: 12/06/2022] [Indexed: 06/17/2023]
Abstract
In this paper, we develop a method for Friedel-Crafts acylation using metal triflate in deep eutectic solvents. Various metal triflates were tested and provided good to excellent yields of corresponding ketone products. The density functional theory calculation revealed the metal effects on the formation of active intermediate acylium triflate as well as the acidic condition. The metal triflate in the deep eutectic solvent can be recovered and reused with a little loss in the catalytic activity.
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Affiliation(s)
- Minh-Tam
Thi Nguyen
- Faculty
of Chemistry, University of Science, Ho Chi Minh City 700000, Vietnam
- Vietnam
National University, Ho Chi
Minh City 700000, Vietnam
| | - Nghia Le
- Faculty
of Chemistry, University of Science, Ho Chi Minh City 700000, Vietnam
- Vietnam
National University, Ho Chi
Minh City 700000, Vietnam
- Institute
for Computational Science and Technology (ICST), Quang Trung Software City, Ho Chi Minh City 700000, Vietnam
| | - Hai Truong Nguyen
- Faculty
of Chemistry, University of Science, Ho Chi Minh City 700000, Vietnam
- Vietnam
National University, Ho Chi
Minh City 700000, Vietnam
| | - Tram Diem Vu Luong
- Faculty
of Chemistry, University of Science, Ho Chi Minh City 700000, Vietnam
- Vietnam
National University, Ho Chi
Minh City 700000, Vietnam
| | - Van Kieu Thuy Nguyen
- Faculty
of Chemistry, University of Science, Ho Chi Minh City 700000, Vietnam
- Vietnam
National University, Ho Chi
Minh City 700000, Vietnam
| | - Yoshiyuki Kawazoe
- New
Industry Creation Hatchery Center, Tohoku
University, Sendai 980-8579, Japan
- Department
of Physics and Nanotechnology, SRM Institute
of Science and Technology, Kattankulathur 603203, Tamil Nadu, India
- School of
Physics, Suranaree University of Technology, 111 University Venue Muang, Nakhon Ratchasima 30000, Thailand
| | - Phuong Hoang Tran
- Faculty
of Chemistry, University of Science, Ho Chi Minh City 700000, Vietnam
- Vietnam
National University, Ho Chi
Minh City 700000, Vietnam
| | - Nguyen-Nguyen Pham-Tran
- Faculty
of Chemistry, University of Science, Ho Chi Minh City 700000, Vietnam
- Vietnam
National University, Ho Chi
Minh City 700000, Vietnam
- Institute
for Computational Science and Technology (ICST), Quang Trung Software City, Ho Chi Minh City 700000, Vietnam
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5
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Kim YH, Kim DB, Youn SW. Simple Tandem Olefin Isomerization/Intramolecular Hydroamination of Alkenyl Amines with Various Allylic Tethers. J Org Chem 2022; 87:11919-11924. [PMID: 36001369 DOI: 10.1021/acs.joc.2c01640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A simple and efficient AgOTf-promoted tandem olefin isomerization/intramolecular hydroamination of 1,1-disubstituted alkenyl amines has been developed. This one-pot process represents a facile and attractive route for the synthesis of diverse 2-alkyl-substituted 1,3-X,N-heterocycles through chemo- and regioselective C(sp3)-N bond formation with atom economy. Advantages such as the operationally simple and practical procedure that uses a readily available catalyst under aerobic conditions, good to excellent chemical yields, the high functional group tolerance, the broad substrate scope, and high efficiency and selectivity are noteworthy.
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Affiliation(s)
- Young Ho Kim
- Center for New Directions in Organic Synthesis, Department of Chemistry and Research Institute for Natural Sciences, Hanyang University, Seoul 04763, Korea
| | - Dong Bin Kim
- Center for New Directions in Organic Synthesis, Department of Chemistry and Research Institute for Natural Sciences, Hanyang University, Seoul 04763, Korea
| | - So Won Youn
- Center for New Directions in Organic Synthesis, Department of Chemistry and Research Institute for Natural Sciences, Hanyang University, Seoul 04763, Korea
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6
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Soda AK, Bontha IR, Chilaka SK, Chellu RK, Madabhushi S. Lewis acid catalyzed tandem synthesis of quinazoline‐2,4‐diones by reaction of isatins with aryl/alkyl amines using TBHP as oxidant. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Anil Kumar Soda
- Indian Institute of Chemical Technology CSIR: Indian Institute of Chemical Technology Fluoro-Agrochemicals Fluoro-Agrochemicals, CSIR-IICT,Tarnaka 500007 Hyderabad INDIA
| | - Indrasena Reddy Bontha
- Indian Institute of Chemical Technology CSIR: Indian Institute of Chemical Technology Fluoro-Agrochemicals Fluoro-Agrochemicals, CSIR-IICT,Tarnaka 500007 Hyderabad INDIA
| | - Sai Krishna Chilaka
- Indian Institute of Chemical Technology CSIR: Indian Institute of Chemical Technology Fluoro-Agrochemicals Fluoro-Agrochemicals, CSIR-IICT,Tarnaka 500007 Hyderabad INDIA
| | - Ramesh Kumar Chellu
- Indian Institute of Chemical Technology CSIR: Indian Institute of Chemical Technology Fluoro-Agrochemicals Fluoro-Agrochemicals, CSIR-IICT,Tarnaka 500007 Hyderabad INDIA
| | - Sridhar Madabhushi
- Indian Institute of Chemical Technology Fluoro&Agrochemicals Department Taranaka 500007 Hyderabad INDIA
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7
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Tatina MB, Xinzhu W, Santoso M, Moussa Z, Judeh ZMA. TMSOTf-Promoted Intermolecular Cascade Reaction of Aromatic Diazo Ketones with Olefins: Selective Synthesis of 3-Arylethylideneoxindoles. J Org Chem 2020; 85:9129-9138. [DOI: 10.1021/acs.joc.0c01076] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Madhu Babu Tatina
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, N1.2−B1-14, 637459, Singapore
| | - Wang Xinzhu
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, N1.2−B1-14, 637459, Singapore
| | - Mardi Santoso
- Department of Chemistry, Institut Teknologi Sepuluh Nopember, ITS Sukolilo, Surabaya 60111, Indonesia
| | - Ziad Moussa
- Department of Chemistry, College of Science, United Arab Emirates University, P.O.Box 15551, Al Ain, United Arab Emirates
| | - Zaher M. A. Judeh
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, N1.2−B1-14, 637459, Singapore
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8
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Zhong C, Yin Q, Zhao Y, Li Q, Hu L. Formal [5+1] annulation reactions of dielectrophilic peroxides: facile access to functionalized dihydropyrans. Chem Commun (Camb) 2020; 56:13189-13192. [DOI: 10.1039/d0cc05565d] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Peroxides, functioning as unique five-atom bielectrophilic synthons, enable the new [5+1] annulation reactions to access dihydropyrans in high yields.
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Affiliation(s)
- Chen Zhong
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research
- School of Pharmaceutical Sciences
- Chongqing University
- Chongqing 401331
- China
| | - Qi Yin
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research
- School of Pharmaceutical Sciences
- Chongqing University
- Chongqing 401331
- China
| | - Yukun Zhao
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research
- School of Pharmaceutical Sciences
- Chongqing University
- Chongqing 401331
- China
| | - Qinfeng Li
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research
- School of Pharmaceutical Sciences
- Chongqing University
- Chongqing 401331
- China
| | - Lin Hu
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research
- School of Pharmaceutical Sciences
- Chongqing University
- Chongqing 401331
- China
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9
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Borthakur U, Biswas S, Saikia AK. Vinylsilanes in Highly Diastereo- and Regio-Selective Synthesis of Dihydropyrans. ACS OMEGA 2019; 4:2630-2636. [PMID: 31459498 PMCID: PMC6648048 DOI: 10.1021/acsomega.8b03635] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/27/2018] [Accepted: 01/21/2019] [Indexed: 06/10/2023]
Abstract
Borontrifluoride etherate (BF3·OEt2) can be efficiently used for the synthesis of dihydropyrans from triethylsilyl homoallylic alcohols and aldehydes in good yields. The reaction is highly diastereo- and regio-selective.
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10
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Dachavaram SS, Penthala NR, Calahan JL, Munson EJ, Crooks PA. Highly sulphated cellulose: a versatile, reusable and selective desilylating agent for deprotection of alcoholic TBDMS ethers. Org Biomol Chem 2018; 16:6057-6062. [PMID: 30090907 DOI: 10.1039/c8ob01438h] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A mild, efficient and rapid protocol was developed for the deprotection of alcoholic TBDMS ethers using a recyclable, eco-friendly highly sulphated cellulose sulphate acid catalyst in methanol. This acid catalyst selectively cleaves alcoholic TBDMS ethers in bis-TBDMS ethers containing both alcoholic and phenolic TBDMS ether moieties.
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Affiliation(s)
- Soma Shekar Dachavaram
- Department of Pharmaceutical Sciences College of Pharmacy, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA.
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11
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Gendron T, Sander K, Cybulska K, Benhamou L, Sin PKB, Khan A, Wood M, Porter MJ, Årstad E. Ring-Closing Synthesis of Dibenzothiophene Sulfonium Salts and Their Use as Leaving Groups for Aromatic 18F-Fluorination. J Am Chem Soc 2018; 140:11125-11132. [PMID: 30132661 PMCID: PMC6128620 DOI: 10.1021/jacs.8b06730] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Herein, we report a novel intramolecular ring-closing reaction of biaryl thioethers that give access to highly functionalized dibenzothiophene sulfonium salts under mild conditions. The resulting precursors react regioselectively with [18F]fluoride to give [18F]fluoroarenes in predictable radiochemical yields. The strategy expands the available radiochemical space and provides superior labeling efficiency for clinically relevant PET tracers.
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Affiliation(s)
- Thibault Gendron
- Institute of Nuclear Medicine , University College London , 235 Euston Road (T-5) , London NW1 2BU , United Kingdom.,Department of Chemistry , University College London , 20 Gordon Street , London WC1H 0AJ , United Kingdom
| | - Kerstin Sander
- Institute of Nuclear Medicine , University College London , 235 Euston Road (T-5) , London NW1 2BU , United Kingdom.,Department of Chemistry , University College London , 20 Gordon Street , London WC1H 0AJ , United Kingdom
| | - Klaudia Cybulska
- Department of Chemistry , University College London , 20 Gordon Street , London WC1H 0AJ , United Kingdom
| | - Laure Benhamou
- Institute of Nuclear Medicine , University College London , 235 Euston Road (T-5) , London NW1 2BU , United Kingdom.,Department of Chemistry , University College London , 20 Gordon Street , London WC1H 0AJ , United Kingdom
| | - Pak Kwan Brian Sin
- Institute of Nuclear Medicine , University College London , 235 Euston Road (T-5) , London NW1 2BU , United Kingdom.,Department of Chemistry , University College London , 20 Gordon Street , London WC1H 0AJ , United Kingdom
| | - Aqsa Khan
- Department of Chemistry , University College London , 20 Gordon Street , London WC1H 0AJ , United Kingdom
| | - Michael Wood
- Department of Chemistry , University College London , 20 Gordon Street , London WC1H 0AJ , United Kingdom
| | - Michael J Porter
- Department of Chemistry , University College London , 20 Gordon Street , London WC1H 0AJ , United Kingdom
| | - Erik Årstad
- Institute of Nuclear Medicine , University College London , 235 Euston Road (T-5) , London NW1 2BU , United Kingdom.,Department of Chemistry , University College London , 20 Gordon Street , London WC1H 0AJ , United Kingdom
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12
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Kita Y, Yata T, Nishimoto Y, Yasuda M. Indium Catalyzed Hydrofunctionalization of Styrene Derivatives Bearing a Hydroxy Group with Organosilicon Nucleophiles. J Org Chem 2018; 83:740-753. [PMID: 29226674 DOI: 10.1021/acs.joc.7b02739] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Hydrofunctionalization is one of the most important transformation reactions of alkenes. Herein, we describe the development of an indium-triiodide-catalyzed hydrofunctionalization of alkenes bearing a hydroxy group using various types of organosilicon nucleophiles. Indium triiodide was the most effective catalyst, whereas typical Lewis acids such as TiCl4, AlCl3, and BF3·OEt2 were ineffective. Many functional groups were successfully introduced, and these resulted in yields of 31-86%. Various styrene derivatives were also applicable to this reaction. Mechanistic investigation revealed that the present hydrofunctionalization proceeded through Brønsted acid-catalyzed intramolecular hydroalkoxylation of alkenes followed by InI3-catalyzed substitution reaction of cyclic ether intermediates.
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Affiliation(s)
- Yuji Kita
- Department of Applied Chemistry and ‡Frontier Research Base for Global Young Researchers, Center for Open Innovation Research and Education (COiRE), Graduate School of Engineering, Osaka University , 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Tetsuji Yata
- Department of Applied Chemistry and ‡Frontier Research Base for Global Young Researchers, Center for Open Innovation Research and Education (COiRE), Graduate School of Engineering, Osaka University , 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Yoshihiro Nishimoto
- Department of Applied Chemistry and ‡Frontier Research Base for Global Young Researchers, Center for Open Innovation Research and Education (COiRE), Graduate School of Engineering, Osaka University , 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Makoto Yasuda
- Department of Applied Chemistry and ‡Frontier Research Base for Global Young Researchers, Center for Open Innovation Research and Education (COiRE), Graduate School of Engineering, Osaka University , 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
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13
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Fassbender J, Schnakenburg G, Gates DP, Espinosa Ferao A, Streubel R. Unconventional ionic ring-deconstruction pathways of a three-membered heterocycle. Chem Commun (Camb) 2018; 54:14013-14016. [DOI: 10.1039/c8cc08713j] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Two different ionic deconstruction reactions of the oxaphosphirane ring in I are reported. One is induced by base and involves displacement of the aldehyde unit forming II whilst acid-initiated extrusion of the ring-carbon with its substituents yielded III. Further insights into the latter ring-deconstruction were obtained by quantum chemical calculations.
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Affiliation(s)
- Jan Fassbender
- Institut für Anorganische Chemie der Rheinischen Friedrich-Wilhelms-Universität Bonn
- 53121 Bonn
- Germany
| | - Gregor Schnakenburg
- Institut für Anorganische Chemie der Rheinischen Friedrich-Wilhelms-Universität Bonn
- 53121 Bonn
- Germany
| | - Derek P. Gates
- Department of Chemistry
- University of British Columbia
- Vancouver
- Canada
| | - Arturo Espinosa Ferao
- Departamento de Química Orgánica
- Universidad de Murcia
- Campus de Espinardo
- 30100 Murcia
- Spain
| | - Rainer Streubel
- Institut für Anorganische Chemie der Rheinischen Friedrich-Wilhelms-Universität Bonn
- 53121 Bonn
- Germany
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14
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Sandridge MJ, McLarney BD, Williams CW, France S. α-Alkylidene-γ-butyrolactone Formation via Bi(OTf) 3-Catalyzed, Dehydrative, Ring-Opening Cyclizations of Cyclopropyl Carbinols: Understanding Substituent Effects and Predicting E/Z Selectivity. J Org Chem 2017; 82:10883-10897. [PMID: 28876932 DOI: 10.1021/acs.joc.7b01706] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A Bi(OTf)3-catalyzed ring-opening cyclization of (hetero)aryl cyclopropyl carbinols to form α-alkylidene-γ-butyrolactones (ABLs) is reported. This transformation represents different chemoselectivity from previous reports that demonstrated formation of (hetero)aryl-fused cyclohexa-1,3-dienes upon acid-promoted cyclopropyl carbinol ring opening. ABLs are obtained in up to 89% yield with a general preference for the E-isomers. Mechanistically, Bi(OTf)3 serves as a stable and easy to handle precursor to TfOH. TfOH then catalyzes the formation of cyclopropyl carbinyl cations, which undergo ring opening, intramolecular trapping by the neighboring ester group, subsequent hydrolysis, and loss of methanol resulting in the formation of the ABLs. The nature and relative positioning of the substituents on both the carbinol and the cyclopropane determine both chemo- and stereoselective outcomes. Carbinol substituents determine the extent of cyclopropyl carbinyl cation formation. The cyclopropane donor substituents determine the overall reaction chemoselectivity. Weakly stabilizing or electron-poor donor groups provide better yields of the ABL products. In contrast, copious amounts of competing products are observed with highly stabilizing cyclopropane donor substituents. Finally, a predictive model for E/Z selectivity was developed using DFT calculations.
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Affiliation(s)
- Matthew J Sandridge
- School of Chemistry and Biochemistry and ‡Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology , Atlanta, Georgia 30332, United States
| | - Brett D McLarney
- School of Chemistry and Biochemistry and ‡Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology , Atlanta, Georgia 30332, United States
| | - Corey W Williams
- School of Chemistry and Biochemistry and ‡Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology , Atlanta, Georgia 30332, United States
| | - Stefan France
- School of Chemistry and Biochemistry and ‡Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology , Atlanta, Georgia 30332, United States
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15
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Subba Reddy BV, Nair PN, Antony A, Srivastava N. Recent Advances in Prins Spirocyclization. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700633] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- B. V. Subba Reddy
- Centre for Semio Chemicals; CSIR - Indian Institute of Chemical Technology; Hyderabad India
| | - Preethi Narayanan Nair
- Centre for Semio Chemicals; CSIR - Indian Institute of Chemical Technology; Hyderabad India
| | - Aneesh Antony
- Centre for Semio Chemicals; CSIR - Indian Institute of Chemical Technology; Hyderabad India
| | - Nikhil Srivastava
- Centre for Semio Chemicals; CSIR - Indian Institute of Chemical Technology; Hyderabad India
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16
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Lempenauer L, Duñach E, Lemière G. Tuning the Reactivity of Functionalized Diallylic Alcohols: Brønsted versus Lewis Acid Catalysis. Chemistry 2017; 23:10285-10288. [DOI: 10.1002/chem.201702601] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Indexed: 11/06/2022]
Affiliation(s)
- Luisa Lempenauer
- Université Côte d'AzurInstitut de Chimie de Nice, CNRS, Parc Valrose 06108 Nice Cedex 2 France
| | - Elisabet Duñach
- Université Côte d'AzurInstitut de Chimie de Nice, CNRS, Parc Valrose 06108 Nice Cedex 2 France
| | - Gilles Lemière
- Université Côte d'AzurInstitut de Chimie de Nice, CNRS, Parc Valrose 06108 Nice Cedex 2 France
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17
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Tran PH, Nguyen HT, Hansen PE, Le TN. Greener Friedel-Crafts Acylation Using Microwave-Enhanced Reactivity of Bismuth Triflate in the Friedel-Crafts Benzoylation of Aromatic Compounds with Benzoic Anhydride. ChemistrySelect 2017. [DOI: 10.1002/slct.201601681] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Phuong Hoang Tran
- Department of Organic Chemistry, Faculty of Chemistry; University of Science, Vietnam National University; Hochiminh city 70000 Vietnam
| | - Hai Truong Nguyen
- Department of Organic Chemistry, Faculty of Chemistry; University of Science, Vietnam National University; Hochiminh city 70000 Vietnam
| | - Poul Erik Hansen
- Department of Science and Environment; Roskilde University, POB 260; Roskilde DK- 4000 Denmark
| | - Thach Ngoc Le
- Department of Organic Chemistry, Faculty of Chemistry; University of Science, Vietnam National University; Hochiminh city 70000 Vietnam
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18
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Affiliation(s)
- Pierrick Ondet
- Institut de Chimie de Nice; UMR 7272; Université Nice Sophia Antipolis; Parc Valrose 06108 Nice Cedex 2 France
| | - Gilles Lemière
- Institut de Chimie de Nice; UMR 7272; Université Nice Sophia Antipolis; Parc Valrose 06108 Nice Cedex 2 France
| | - Elisabet Duñach
- Institut de Chimie de Nice; UMR 7272; Université Nice Sophia Antipolis; Parc Valrose 06108 Nice Cedex 2 France
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19
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Elizarov N, Pucheault M, Antoniotti S. Highly Efficient Hosomi-Sakurai Reaction of Aromatic Aldehydes Catalyzed by Montmorillonite Doped with Simple Bismuth(III) Salts. Batch and Continuous Flow Studies. ChemistrySelect 2016. [DOI: 10.1002/slct.201600916] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Nelli Elizarov
- Université Côte d'Azur, CNRS, ICN, Parc Valrose; 06108 Nice cedex 2 France
| | - Mathieu Pucheault
- Institut des Sciences Moléculaires, UMR 5255 CNRS -; Université de Bordeaux; 351 cours de la libération 33405 Talence cedex France
| | - Sylvain Antoniotti
- Université Côte d'Azur, CNRS, ICN, Parc Valrose; 06108 Nice cedex 2 France
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20
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Youn SW, Jang SS, Lee SR. Bi(OTf) 3 -mediated intramolecular hydroamination of 2-aminostilbenes for the synthesis of 2-arylindolines. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.06.063] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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21
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Shuler WG, Combee LA, Falk ID, Hilinski MK. Intermolecular Electrophilic Addition of Epoxides to Alkenes: [3+2] Cycloadditions Catalyzed by Lewis Acids. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600651] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- William G. Shuler
- Department of Chemistry; The University of Virginia; McCormick Road 22904 Charlottesville VA USA
| | - Logan A. Combee
- Department of Chemistry; The University of Virginia; McCormick Road 22904 Charlottesville VA USA
| | - Isaac D. Falk
- Department of Chemistry; The University of Virginia; McCormick Road 22904 Charlottesville VA USA
| | - Michael K. Hilinski
- Department of Chemistry; The University of Virginia; McCormick Road 22904 Charlottesville VA USA
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22
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23
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Ondet P, Lempenauer L, Duñach E, Lemière G. Bismuth(iii) triflate-catalysed tandem cyclisations towards complex polycyclic ethers. Org Chem Front 2016. [DOI: 10.1039/c6qo00212a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of complex polycyclic ethers have been synthesised under very mild conditions using a low catalyst loading of bismuth(iii) triflate.
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Affiliation(s)
- Pierrick Ondet
- Institut de Chimie de Nice
- UMR 7272
- Université Nice Sophia Antipolis
- CNRS
- 06108 Nice Cedex 2
| | - Luisa Lempenauer
- Institut de Chimie de Nice
- UMR 7272
- Université Nice Sophia Antipolis
- CNRS
- 06108 Nice Cedex 2
| | - Elisabet Duñach
- Institut de Chimie de Nice
- UMR 7272
- Université Nice Sophia Antipolis
- CNRS
- 06108 Nice Cedex 2
| | - Gilles Lemière
- Institut de Chimie de Nice
- UMR 7272
- Université Nice Sophia Antipolis
- CNRS
- 06108 Nice Cedex 2
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24
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Park J, Lee YM, Ohkubo K, Nam W, Fukuzumi S. Efficient Epoxidation of Styrene Derivatives by a Nonheme Iron(IV)-Oxo Complex via Proton-Coupled Electron Transfer with Triflic Acid. Inorg Chem 2015; 54:5806-12. [PMID: 26010774 DOI: 10.1021/acs.inorgchem.5b00504] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Styrene derivatives are not oxidized by [(N4Py)Fe(IV)(O)](2+) (N4Py = N,N-bis(2-pyridylmethyl)-N-bis(2-pyridyl)methylamine) in acetonitrile at 298 K, whereas epoxidation of styrene derivatives by the iron(IV)-oxo complex occurs efficiently in the presence of triflic acid (HOTf) via proton-coupled electron transfer (PCET) from styrene derivatives to the diprotonated species of [(N4Py)Fe(IV)(O)](2+) with HOTf. Logarithms of the first-order rate constants of HOTf-promoted expoxidation of styrene derivatives with [(N4Py)Fe(IV)(O)](2+) and PCET from electron donors to [(N4Py)Fe(IV)(O)](2+) in the precursor complexes exhibit a remarkably unified correlation with the driving force of PCET in light of the Marcus theory of electron transfer when the differences in the formation constants of precursor complexes are taken into account. The same PCET driving force dependence is obtained for the first-order rate constants of HOTf-promoted oxygen atom transfer from thioanisols to [(N4Py)Fe(IV)(O)](2+) and HOTf-promoted hydrogen atom transfer from toluene derivatives to [(N4Py)Fe(IV)(O)](2+) in the precursor complexes. Thus, HOTf-promoted epoxidation of styrene derivatives by [(N4Py)Fe(IV)(O)](2+) proceeds via the rate-determining electron transfer from styrene derivatives to the diprotonated species of [(N4Py)Fe(IV)(O)](2+), as shown in the reactions of HOTf-promoted oxygen atom transfer from thioanisols to [(N4Py)Fe(IV)(O)](2+) and HOTf-promoted hydrogen atom transfer from toluene derivatives to [(N4Py)Fe(IV)(O)](2+).
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Affiliation(s)
- Jiyun Park
- †Department of Material and Life Science, Graduate School of Engineering, ALCA and SENTAN, Japan Science and Technology Agency (JST), Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan
| | - Yong-Min Lee
- ‡Department of Chemistry and Nano Science, Ewha Womans University, Seoul 120-750, Korea
| | - Kei Ohkubo
- †Department of Material and Life Science, Graduate School of Engineering, ALCA and SENTAN, Japan Science and Technology Agency (JST), Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan.,‡Department of Chemistry and Nano Science, Ewha Womans University, Seoul 120-750, Korea
| | - Wonwoo Nam
- ‡Department of Chemistry and Nano Science, Ewha Womans University, Seoul 120-750, Korea
| | - Shunichi Fukuzumi
- †Department of Material and Life Science, Graduate School of Engineering, ALCA and SENTAN, Japan Science and Technology Agency (JST), Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan.,‡Department of Chemistry and Nano Science, Ewha Womans University, Seoul 120-750, Korea.,§Faculty of Science and Technology, ALCA and SENTAN, Japan Science and Technology Agency (JST), Meijo University, Nagoya, Aichi 468-8502, Japan
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25
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Ondet P, Joffrin A, Diaf I, Lemière G, Duñach E. Cycloisomerization of Allene–Enol Ethers under Bi(OTf)3 Catalysis. Org Lett 2015; 17:1002-5. [DOI: 10.1021/acs.orglett.5b00110] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Pierrick Ondet
- Institut de Chimie
de Nice,
UMR 7272, Université Nice Sophia Antipolis, CNRS, Parc
Valrose, 06108 Nice
Cedex 2, France
| | - Amélie Joffrin
- Institut de Chimie
de Nice,
UMR 7272, Université Nice Sophia Antipolis, CNRS, Parc
Valrose, 06108 Nice
Cedex 2, France
| | - Ilhem Diaf
- Institut de Chimie
de Nice,
UMR 7272, Université Nice Sophia Antipolis, CNRS, Parc
Valrose, 06108 Nice
Cedex 2, France
| | - Gilles Lemière
- Institut de Chimie
de Nice,
UMR 7272, Université Nice Sophia Antipolis, CNRS, Parc
Valrose, 06108 Nice
Cedex 2, France
| | - Elisabet Duñach
- Institut de Chimie
de Nice,
UMR 7272, Université Nice Sophia Antipolis, CNRS, Parc
Valrose, 06108 Nice
Cedex 2, France
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26
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Murai M, Hosokawa N, Roy D, Takai K. Bismuth-Catalyzed Synthesis of Polycyclic Aromatic Hydrocarbons (PAHs) with a Phenanthrene Backbone via Cyclization and Aromatization of 2-(2-Arylphenyl)vinyl Ethers. Org Lett 2014; 16:4134-7. [DOI: 10.1021/ol5018273] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Masahito Murai
- Division
of Chemistry and Biotechnology, Graduate School of Natural Science
and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
| | - Naoki Hosokawa
- Division
of Chemistry and Biotechnology, Graduate School of Natural Science
and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
| | - David Roy
- Division
of Chemistry and Biotechnology, Graduate School of Natural Science
and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
| | - Kazuhiko Takai
- Division
of Chemistry and Biotechnology, Graduate School of Natural Science
and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
- Research
Center of New Functional Materials for Energy Production, Storage
and Transport, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
- ACT-C, Japan Science
and Technology Agency, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
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27
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Murai M, Origuchi K, Takai K. Bismuth(III)-catalyzed dehydrative etherification and thioetherification of phenolic hydroxy groups. Org Lett 2014; 16:3828-31. [PMID: 25007290 DOI: 10.1021/ol501744g] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Use of a bismuth catalyst allowed efficient dehydrative substitution of phenolic hydroxy groups with alcohols and thiols to form C-O and C-S bonds. The reaction required equimolar amounts of two readily available substrates that generated H(2)O as the only byproduct. The relatively mild reaction conditions were compatible with the functional groups selected, and provided excellent chemoselectivity.
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Affiliation(s)
- Masahito Murai
- Division of Chemistry and Biotechnology, Graduate School of Natural Science and Technology and ‡Research Center of New Functional Materials for Energy Production, Storage and Transport, Okayama University , 3-1-1 Tsushimanaka, Kita-ku, Okayama, Okayama Prefecture 700-8530, Japan
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28
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Khan MN, Pal S, Karamthulla S, Choudhury LH. Multicomponent reactions for facile access to coumarin-fused dihydroquinolines and quinolines: synthesis and photophysical studies. NEW J CHEM 2014. [DOI: 10.1039/c4nj00630e] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A three-component reaction of 4-hydroxycoumarin, aldehydes and aromatic amines in the presence of catalytic amounts of Bi(OTf)3 is reported. Photophysical studies of these molecules showed that coumarin-fused dihydroquinolines exhibit significant quantum yields.
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Affiliation(s)
- Md. Nasim Khan
- Department of Chemistry
- Indian Institute of Technology Patna
- Bihar-800013, India
| | - Suman Pal
- Department of Chemistry
- Indian Institute of Technology Patna
- Bihar-800013, India
| | - Shaik Karamthulla
- Department of Chemistry
- Indian Institute of Technology Patna
- Bihar-800013, India
| | - Lokman H. Choudhury
- Department of Chemistry
- Indian Institute of Technology Patna
- Bihar-800013, India
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29
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Cacciuttolo B, Ondet P, Poulain-Martini S, Lemière G, Duñach E. Bi(OTf)3-catalysed synthesis of substituted indanes by a double hydroarylation of unactivated 1,3-dienes. Org Chem Front 2014. [DOI: 10.1039/c4qo00149d] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A straightforward synthesis of indane derivatives by sequential hydroarylation of 1,3-dienes catalysed by bismuth(iii) triflate is presented.
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Affiliation(s)
- Bastien Cacciuttolo
- Institut de Chimie de Nice UMR 7272
- Université de Nice Sophia-Antipolis
- 06108 Nice Cedex 2, France
| | - Pierrick Ondet
- Institut de Chimie de Nice UMR 7272
- Université de Nice Sophia-Antipolis
- 06108 Nice Cedex 2, France
| | - Sophie Poulain-Martini
- Institut de Chimie de Nice UMR 7272
- Université de Nice Sophia-Antipolis
- 06108 Nice Cedex 2, France
| | - Gilles Lemière
- Institut de Chimie de Nice UMR 7272
- Université de Nice Sophia-Antipolis
- 06108 Nice Cedex 2, France
| | - Elisabet Duñach
- Institut de Chimie de Nice UMR 7272
- Université de Nice Sophia-Antipolis
- 06108 Nice Cedex 2, France
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30
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Barbero A, Diez-Varga A, Pulido FJ. Multicomponent Prins Cyclization from Allylsilyl Alcohols Leading to Dioxaspirodecanes. Org Lett 2013; 15:5234-7. [DOI: 10.1021/ol402425u] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Asunción Barbero
- Departamento de Química Orgánica, Facultad de Ciencias, Campus Miguel Delibes, 47011 Valladolid, Spain
| | - Alberto Diez-Varga
- Departamento de Química Orgánica, Facultad de Ciencias, Campus Miguel Delibes, 47011 Valladolid, Spain
| | - Francisco J. Pulido
- Departamento de Química Orgánica, Facultad de Ciencias, Campus Miguel Delibes, 47011 Valladolid, Spain
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31
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Hinkle RJ, Lewis SE. Atom economical, one-pot, three-reaction cascade to novel tricyclic 2,4-dihydro-1H-benzo[f]isochromenes. Org Lett 2013; 15:4070-3. [PMID: 23901903 PMCID: PMC4447333 DOI: 10.1021/ol401600j] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Reaction of 6-methyl-1-phenylhept-3-yne-2,6-diol with various aldehydes under Lewis acid conditions provides an atom economical, two-component cascade reaction sequence to novel 2,4-dihydro-1H-benzo[f]isochromene compounds. Aliphatic aldehydes as well as electron-deficient and -rich aromatic aldehydes can be used.
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Affiliation(s)
- Robert J Hinkle
- Department of Chemistry, The College of William & Mary, P.O. Box 8795, Williamsburg, Virginia 23187-8795, USA.
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32
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Chen Z, Xiao Y, Zhang J. Reaction of Two Differently Functionalized Oxiranes with Nickel Perchlorate: A Modular Entry to Highly Substituted 1,3-Dioxolanes. European J Org Chem 2013. [DOI: 10.1002/ejoc.201300558] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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33
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Feng J, Fu X, Chen Z, Lin L, Liu X, Feng X. Efficient Enantioselective Synthesis of Dihydropyrans Using a Chiral N,N′-Dioxide as Organocatalyst. Org Lett 2013; 15:2640-3. [DOI: 10.1021/ol400894j] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Juhua Feng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
| | - Xuan Fu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
| | - Zhenling Chen
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
| | - Lili Lin
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
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34
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35
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Abstract
This review covers uses of bismuth catalysts since 2005 with a special emphasis on the emerging applications of such catalysts. Low toxicity, low catalytic loading, synergistic effects with other catalysts, and some hydrocompatibility properties confer to bismuth salts major advantages. The expanding activity in the field clearly highlights the growing potential of bismuth catalysts. The article is not a comprehensive review on bismuth catalysis but a selection of its most promising uses in challenging synthetic transformations.
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Affiliation(s)
- Thierry Ollevier
- Département de chimie, Université Laval, 1045 avenue de la Médecine, Québec (Québec) G1V 0A6, Canada.
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36
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Shang JY, Li F, Bai XF, Jiang JX, Yang KF, Lai GQ, Xu LW. Malononitrile-Assisted Highly Chemoselective Bismuth Triflate Catalyzed Conjugate Reduction of α,β-Unsaturated Ketones. European J Org Chem 2012. [DOI: 10.1002/ejoc.201200020] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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