1
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Li Y, Sun G, He X, Lv H, Gao B. Palladium-Catalyzed Intramolecular Annulation of Difluoroalkenes to Difluoro- and Trifluoromethylated Indane Analogs. J Fluor Chem 2023. [DOI: 10.1016/j.jfluchem.2023.110115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/22/2023]
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2
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Sharma P, Taneja N, Singh S, Hazra CK. Brønsted-Acid-Catalyzed One-Pot Synthesis of β,β-Diaryl Esters: Direct Regioselective Approach to Diverse Arrays of 3-Aryl-1-indanone Cores. Chemistry 2023; 29:e202202956. [PMID: 36200620 DOI: 10.1002/chem.202202956] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Indexed: 11/05/2022]
Abstract
A three-component, solvent-dependent, Brønsted-acid-catalyzed reaction of benzaldehydes, silyl enolates and arene nucleophiles has been developed for the synthesis of potential drug candidate 3-aryl-1-indanones. This reaction features the formation of three C-C bonds, high regioselectivity in a one-pot strategy, broad substrate generality, facile scalability (1.04g), high functional group tolerance and viable substrates. The β-O-silyl ethers generated in-situ from the Mukaiyama aldol reaction were subjected to acid-catalyzed benzylic arylation with strong as well as weak nucleophiles, and the resultant β,β-diaryl esters can undergo a third C-C bond formation with excellent regioselectivity through intramolecular cyclization to afford the indanone products in the same pot. Detailed mechanistic insight leads to a feasible reaction pathway. This transformation opens up a practical and adaptable approach to producing a variety of synthetically valuable transformations and enable the synthesis of medicinally valuable (R)-tolterodine and (+)-indatraline.
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Affiliation(s)
- Pragya Sharma
- Department of Chemistry, Indian Institute of Technology Delhi Hauz Khas, New Delhi, 110016, India
| | - Neha Taneja
- Department of Chemistry, Indian Institute of Technology Delhi Hauz Khas, New Delhi, 110016, India
| | - Sanjay Singh
- Department of Chemistry, Indian Institute of Technology Delhi Hauz Khas, New Delhi, 110016, India
| | - Chinmoy K Hazra
- Department of Chemistry, Indian Institute of Technology Delhi Hauz Khas, New Delhi, 110016, India
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3
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Khoroshilova OV, Boyarskaya IA, Vasilyev AV. Synthesis of α-(Trifluoromethyl)styrenes and 1,3-Di(trifluoromethyl)indanes via Electrophilic Activation of TMS Ethers of (Trifluoromethyl)benzyl Alcohols in Brønsted Acids. J Org Chem 2022; 87:15845-15862. [DOI: 10.1021/acs.joc.2c01961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- Olesya V. Khoroshilova
- Department of Organic Chemistry, Institute of Chemistry, Saint Petersburg State University, Universitetskaya nab., 7/9, Saint Petersburg 199034, Russia
| | - Irina A. Boyarskaya
- Department of Organic Chemistry, Institute of Chemistry, Saint Petersburg State University, Universitetskaya nab., 7/9, Saint Petersburg 199034, Russia
| | - Aleksander V. Vasilyev
- Department of Organic Chemistry, Institute of Chemistry, Saint Petersburg State University, Universitetskaya nab., 7/9, Saint Petersburg 199034, Russia
- Department of Chemistry, Saint Petersburg State Forest Technical University, Institutsky per., 5, Saint Petersburg 194021, Russia
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4
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Vayer M, Mayer RJ, Moran J, Lebœuf D. Leveraging the Hydroarylation of α-(Trifluoromethyl)styrenes to Access Trifluoromethylated All-Carbon Quaternary Centers. ACS Catal 2022. [DOI: 10.1021/acscatal.2c03330] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Marie Vayer
- Université de Strasbourg, CNRS, ISIS UMR
7006, 67000 Strasbourg, France
| | - Robert J. Mayer
- Université de Strasbourg, CNRS, ISIS UMR
7006, 67000 Strasbourg, France
| | - Joseph Moran
- Université de Strasbourg, CNRS, ISIS UMR
7006, 67000 Strasbourg, France
- Institut Universitaire de France (IUF), 75005 Paris, France
| | - David Lebœuf
- Université de Strasbourg, CNRS, ISIS UMR
7006, 67000 Strasbourg, France
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5
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Yamazaki S, Katayama K, Wang Z, Mikata Y, Morimoto T, Ogawa A. Sequential Knoevenagel Condensation/Cyclization for the Synthesis of Indene and Benzofulvene Derivatives. ACS OMEGA 2021; 6:28441-28454. [PMID: 34723041 PMCID: PMC8552470 DOI: 10.1021/acsomega.1c05283] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Accepted: 10/07/2021] [Indexed: 06/13/2023]
Abstract
Sequential Knoevenagel condensation/cyclization leading to indene and benzofulvene derivatives has been developed. The reaction of 2-(1-phenylvinyl)benzaldehyde with malonates gave benzylidene malonates, cyclized indenes, and dehydrogenated benzofulvenes. The product selectivity depends on the reaction conditions. The reaction with piperidine, AcOH in benzene at 80 °C for 1.5 h gave a benzylidene malonate in 75% yield as a major product. The reactions with piperidine, AcOH in benzene at 80 °C for 17 h and with TiCl4-pyridine at room temperature gave an indene derivative in 56 and 79% yields, respectively, as a major product. The reaction with TiCl4-Et3N gave a benzofulvene in 40% yield selectively. Indene was transformed to a benzofulvene derivative using the reagents TiCl4-Et3N and 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ). The reaction of variously substituted aryl derivatives with dimethyl malonate gave indene and benzofulvene derivatives. The reactions of 2-(1-phenylvinyl)benzaldehyde with Meldrum's acid or malononitrile also gave cyclized compounds in the suitable sequential or stepwise conditions. Furthermore, the reaction of 2-arylbenzaldehydes has been investigated. The limitation and scope have been described. The reaction mechanism of the cyclization steps has been examined by DFT calculations.
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Affiliation(s)
- Shoko Yamazaki
- Department
of Chemistry, Nara University of Education, Takabatake-cho, Nara 630-8528, Japan
| | - Kohtaro Katayama
- Department
of Chemistry, Nara University of Education, Takabatake-cho, Nara 630-8528, Japan
| | - Zhichao Wang
- Department
of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, Gakuen-cho 1-1, Nakaku, Sakai, Osaka 599-8531, Japan
| | - Yuji Mikata
- KYOUSEI
Science Center, Nara Women’s University, Nara 630-8506, Japan
| | - Tsumoru Morimoto
- Graduate
School of Materials Science, Nara Institute
of Science and Technology (NAIST), Takayama, Ikoma, Nara 630-0192, Japan
| | - Akiya Ogawa
- Department
of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, Gakuen-cho 1-1, Nakaku, Sakai, Osaka 599-8531, Japan
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6
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Abstract
This review describes methods for the synthesis of 1-trifluomethylindanes and close structures, which are still quite rare and scarcely available compounds. There are two main approaches to obtain 1-CF3-indanes. The first one is the construction of an indane system from CF3 precursors; the main methods are acid-mediated Friedel–Crafts cyclization, transition metal-catalyzed [3+2] annulation, and free-radical transformations. The second approach is the trifluoromethylation of a ready-made indane core by various CF3 sources, such as Ruppert–Prakash or Togni reagents. Many of these synthetic procedures possess high regio- and stereo-selectivity, allowing the preparation of unique 1-CF3-indane structures. In recent years, great attention has been paid to the synthesis of 1-CF3-indanes, due to the discovery of important biologically active properties for these compounds.
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7
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Melo SJ, Sousa JPB, Sá MG, Morais LS, Magalhães NM, Gouveia FN, Albernaz LC, Espindola LS. Machaerium acutifolium compounds with larvicidal activity against Aedes aegypti. PEST MANAGEMENT SCIENCE 2021; 77:1444-1451. [PMID: 33128432 DOI: 10.1002/ps.6163] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 10/11/2020] [Accepted: 10/31/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND Plant extracts and isolated compounds are known for their insecticidal activity. The Aedes aegypti mosquito has a significant medical impact as it transmits a number of arboviruses and is able to develop resistance to the commercially available insecticides. This study investigates larvicidal compounds isolated from Machaerium acutifolium, designated by the Brazilian Forest Service as a sustainable species. RESULTS A M. acutifolium trunk ethyl acetate extract was fractionated using chromatographic methods with full structural elucidation by mass spectrometry (MS), nuclear magnetic resonance and specific rotation analyses revealing: one new 3-arylcoumarin derivative 1; two flavonoids 2 and 3; a trans-stilbene 4, and an unprecedented natural indene 5. The larvicidal activity against Ae. aegypti after 24 h exposure was: crude extract (median lethal dose, LC50 205 mg L-1 ), fraction C (LC50 27 mg L-1 ) and 5 (LC50 24 mg L-1 ). CONCLUSION A M. acutifolium extract showed larvicidal activity, which increased with prolonged exposure, demonstrating LC50 75 mg L-1 after 72 h. Although the flavonoids 2 and 3 and trans-stilbene 4 were deemed inactive according to the adopted mortality limit, additional tests revealed their ability to cause 65% Ae. aegypti larvae mortality, suggesting they could contribute to the larvicidal activity. Compound 5, identified by liquid chromatography-MS, was over eight-fold more toxic to larvae than the crude extract after 24 h. Therefore, 5 constitutes a structural model for new prototypes to control Ae. aegypti. These data reinforce the potential of natural products as a source of commercial alternatives for vector control strategies, respecting both sustainability and eco-friendly principles. © 2020 Society of Chemical Industry.
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Affiliation(s)
- Sebastião J Melo
- Laboratório de Farmacognosia, Universidade de Brasília, Campus Universitário Darcy Ribeiro, Brasília, Brazil
| | - João Paulo B Sousa
- Laboratório de Farmacognosia, Universidade de Brasília, Campus Universitário Darcy Ribeiro, Brasília, Brazil
| | - Maíra G Sá
- Laboratório de Farmacognosia, Universidade de Brasília, Campus Universitário Darcy Ribeiro, Brasília, Brazil
| | - Laís S Morais
- Laboratório de Farmacognosia, Universidade de Brasília, Campus Universitário Darcy Ribeiro, Brasília, Brazil
| | - Natália Mg Magalhães
- Laboratório de Farmacognosia, Universidade de Brasília, Campus Universitário Darcy Ribeiro, Brasília, Brazil
| | - Fernando N Gouveia
- Laboratório de Produtos Florestais, Serviço Florestal Brasileiro, Brasília, Brazil
| | - Lorena C Albernaz
- Laboratório de Farmacognosia, Universidade de Brasília, Campus Universitário Darcy Ribeiro, Brasília, Brazil
| | - Laila S Espindola
- Laboratório de Farmacognosia, Universidade de Brasília, Campus Universitário Darcy Ribeiro, Brasília, Brazil
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Fernandes AJ, Panossian A, Michelet B, Martin-Mingot A, Leroux FR, Thibaudeau S. CF 3-substituted carbocations: underexploited intermediates with great potential in modern synthetic chemistry. Beilstein J Org Chem 2021; 17:343-378. [PMID: 33828616 PMCID: PMC7871035 DOI: 10.3762/bjoc.17.32] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Accepted: 12/17/2020] [Indexed: 12/12/2022] Open
Abstract
"The extraordinary instability of such an "ion" accounts for many of the peculiarities of organic reactions" - Franck C. Whitmore (1932). This statement from Whitmore came in a period where carbocations began to be considered as intermediates in reactions. Ninety years later, pointing at the strong knowledge acquired from the contributions of famous organic chemists, carbocations are very well known reaction intermediates. Among them, destabilized carbocations - carbocations substituted with electron-withdrawing groups - are, however, still predestined to be transient species and sometimes considered as exotic ones. Among them, the CF3-substituted carbocations, frequently suggested to be involved in synthetic transformations but rarely considered as affordable intermediates for synthetic purposes, have long been investigated. This review highlights recent and past reports focusing on their study and potential in modern synthetic transformations.
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Affiliation(s)
- Anthony J Fernandes
- Université de Strasbourg, Université de Haute-Alsace, CNRS, UMR 7042-LIMA, ECPM, 25 Rue Becquerel, 67087 Strasbourg, France
| | - Armen Panossian
- Université de Strasbourg, Université de Haute-Alsace, CNRS, UMR 7042-LIMA, ECPM, 25 Rue Becquerel, 67087 Strasbourg, France
| | - Bastien Michelet
- Université de Poitiers, CNRS, IC2MP, UMR 7285, Equipe “Synthèse Organique”, 4 Rue Michel Brunet, 86073 Poitiers Cedex 9, France
| | - Agnès Martin-Mingot
- Université de Poitiers, CNRS, IC2MP, UMR 7285, Equipe “Synthèse Organique”, 4 Rue Michel Brunet, 86073 Poitiers Cedex 9, France
| | - Frédéric R Leroux
- Université de Strasbourg, Université de Haute-Alsace, CNRS, UMR 7042-LIMA, ECPM, 25 Rue Becquerel, 67087 Strasbourg, France
| | - Sébastien Thibaudeau
- Université de Poitiers, CNRS, IC2MP, UMR 7285, Equipe “Synthèse Organique”, 4 Rue Michel Brunet, 86073 Poitiers Cedex 9, France
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Zerov AV, Boyarskaya IA, Khoroshilova OV, Lavrentieva IN, Slita AV, Sinegubova EO, Zarubaev VV, Vasilyev AV. TfOH-Promoted Reactions of TMS-Ethers of CF 3-Pentenynoles with Arenes. Synthesis of CF 3-Substituted Pentenynes, Indenes, and Other Carbocyclic Structures. J Org Chem 2021; 86:1489-1504. [PMID: 33372515 DOI: 10.1021/acs.joc.0c02361] [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
Trimethylsilyl ethers of 1,5-diaryl-3-(trifluoromethyl)-pent-1-en-4-yn-3-oles [Ar-C≡C-C(CF3)(OSiMe3)-CH═CH-Ar'] in the superacid TfOH give rise to reactive conjugated CF3-allylic-propargylic cations [Ar-C≡C-C+(CF3)-CH═CH-Ar']. These species react with arenes in the presence of 1.5 equiv of TfOH forming regio- and stereoselectively E-1,1,5-triaryl-3-(trifluoromethyl)-pent-2-en-4-ynes [Ar-C≡C-C(CF3)═CH-CHAr'(Ar″)] in good yields. In the excess of TfOH, these CF3-pentenynes are further intramolecularly cyclized into CF3-bicyclic dihydroanthracene derivatives ("helicopter"-like molecules). The CF3-pentenynes may also react with arenes, as external nucleophiles, leading to CF3-indenes. These two main reaction pathways depend on internal nucleophilicity of aryl substituents in CF3-pentenynes and external nucleophilicity of aromatic molecules. Plausible cationic reaction mechanisms have been discussed. CF3-bicyclic dihydroanthracene derivatives have been studied regarding their cytotoxicity and virus-inhibiting activity against influenza virus A/Puerto Rico/8/34 (H1N1) in MDCK cell line.
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Affiliation(s)
- Aleksey V Zerov
- Department of Organic Chemistry, Institute of Chemistry, Saint Petersburg State University, Universitetskaya nab., 7/9, Saint Petersburg 199034, Russia
| | - Irina A Boyarskaya
- Department of Organic Chemistry, Institute of Chemistry, Saint Petersburg State University, Universitetskaya nab., 7/9, Saint Petersburg 199034, Russia
| | - Olesya V Khoroshilova
- Department of Organic Chemistry, Institute of Chemistry, Saint Petersburg State University, Universitetskaya nab., 7/9, Saint Petersburg 199034, Russia
| | - Irina N Lavrentieva
- St. Petersburg Pasteur Institute, Mira st., 14, Saint Petersburg 197101, Russia
| | - Alexander V Slita
- St. Petersburg Pasteur Institute, Mira st., 14, Saint Petersburg 197101, Russia
| | | | - Vladimir V Zarubaev
- St. Petersburg Pasteur Institute, Mira st., 14, Saint Petersburg 197101, Russia
| | - Aleksander V Vasilyev
- Department of Organic Chemistry, Institute of Chemistry, Saint Petersburg State University, Universitetskaya nab., 7/9, Saint Petersburg 199034, Russia.,Department of Chemistry, Saint Petersburg State Forest Technical University, Institutsky per., 5, Saint Petersburg 194021, Russia
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10
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Chaudhary B, Kulkarni N, Sharma S. Rhodium(iii)-catalyzed synthesis of 3-trifluoromethylindanones from N-methoxybenzamides via C–H activation and Claisen/retro-Claisen reaction. Org Chem Front 2020. [DOI: 10.1039/d0qo00330a] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
An efficient synthesis of 3-trifluoromethylindanones via C–H annulation of N-methoxybenzamides with β-trifluoromethyl-α,β-unsaturated ketones under Rh(iii)-catalysis is described.
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Affiliation(s)
- Bharatkumar Chaudhary
- Department of Medicinal Chemistry
- National Institute of Pharmaceutical Education and Research
- Ahmedabad (NIPER-A)
- Gandhinagar
- India
| | - Neeraj Kulkarni
- Department of Medicinal Chemistry
- National Institute of Pharmaceutical Education and Research
- Ahmedabad (NIPER-A)
- Gandhinagar
- India
| | - Satyasheel Sharma
- Department of Medicinal Chemistry
- National Institute of Pharmaceutical Education and Research
- Ahmedabad (NIPER-A)
- Gandhinagar
- India
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11
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Noël F, Vuković VD, Yi J, Richmond E, Kravljanac P, Moran J. Catalytic Synthesis of Trifluoromethylated Allenes, Indenes, Chromenes, and Olefins from Propargylic Alcohols in HFIP. J Org Chem 2019; 84:15926-15947. [DOI: 10.1021/acs.joc.9b02398] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Florent Noël
- Université de Strasbourg, CNRS, ISIS, 8 Allée Gaspard Monge, 67000 Strasbourg, France
| | - Vuk D. Vuković
- Université de Strasbourg, CNRS, ISIS, 8 Allée Gaspard Monge, 67000 Strasbourg, France
| | - Jing Yi
- Université de Strasbourg, CNRS, ISIS, 8 Allée Gaspard Monge, 67000 Strasbourg, France
| | - Edward Richmond
- Université de Strasbourg, CNRS, ISIS, 8 Allée Gaspard Monge, 67000 Strasbourg, France
| | - Pavle Kravljanac
- Université de Strasbourg, CNRS, ISIS, 8 Allée Gaspard Monge, 67000 Strasbourg, France
| | - Joseph Moran
- Université de Strasbourg, CNRS, ISIS, 8 Allée Gaspard Monge, 67000 Strasbourg, France
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12
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Affiliation(s)
- Antonia Rinaldi
- Dipartimento di Chimica "U. Schiff"; Università degli Studi di Firenze; Via della Lastruccia 13 50019 Sesto F.no Italy
| | - Dina Scarpi
- Dipartimento di Chimica "U. Schiff"; Università degli Studi di Firenze; Via della Lastruccia 13 50019 Sesto F.no Italy
| | - Ernesto G. Occhiato
- Dipartimento di Chimica "U. Schiff"; Università degli Studi di Firenze; Via della Lastruccia 13 50019 Sesto F.no Italy
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13
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Li Y, Yu J, Bi Y, Yan G, Huang D. Tandem Reactions of Ynones:viaConjugate Addition of Nitrogen‐, Carbon‐, Oxygen‐, Boron‐, Silicon‐, Phosphorus‐, and Sulfur‐Containing Nucleophiles. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900611] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Yang Li
- Department of ChemistryLishui University No. 1 Xueyuan Road Lishui City 323000 Zhejiang Province People's Republic of China
| | - Jian Yu
- Department of ChemistryLishui University No. 1 Xueyuan Road Lishui City 323000 Zhejiang Province People's Republic of China
| | - Yicheng Bi
- Department of ChemistryQingdao University of Science & Technology Qingdao Shandong People's Republic of China
| | - Guobing Yan
- Department of ChemistryLishui University No. 1 Xueyuan Road Lishui City 323000 Zhejiang Province People's Republic of China
| | - Dayun Huang
- Department of ChemistryLishui University No. 1 Xueyuan Road Lishui City 323000 Zhejiang Province People's Republic of China
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14
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Zerov AV, Bulova AA, Khoroshilova OV, Vasilyev AV. TfOH-promoted transformation of TMS-ethers of diarylsubstituted CF3-allyl alcohols with arenes into CF3-indanes. Org Chem Front 2019. [DOI: 10.1039/c9qo00822e] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Novel synthesis of 1,3-diaryl-1-trifluoromethyl indanes, having predominantly a trans-configuration of aryl groups, was developed on the basis of the reaction of TMS-ethers of 2,4-diaryl-1,1,1-trifluorobut-3-en-2-ols with arenes in superacid TfOH.
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Affiliation(s)
- Aleksey V. Zerov
- Department of Organic Chemistry
- Institute of Chemistry
- Saint Petersburg State University
- Saint Petersburg
- Russia
| | - Anastasia A. Bulova
- Department of Organic Chemistry
- Institute of Chemistry
- Saint Petersburg State University
- Saint Petersburg
- Russia
| | - Olesya V. Khoroshilova
- Research Center for X-ray Diffraction Studies
- Research Park
- St. Petersburg State University
- Saint Petersburg
- Russia
| | - Aleksander V. Vasilyev
- Department of Organic Chemistry
- Institute of Chemistry
- Saint Petersburg State University
- Saint Petersburg
- Russia
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