1
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Teng Y, Yu X, Shang D, Wang Z, Rao W. Brønsted Acid-Catalyzed Dehydrative Nazarov-type Cyclization of CF 3-Substituted 3-Indolylallyl Alcohols: Divergent Synthesis of 1-Trifluoromethylated Cyclopenta[ b]indoles. J Org Chem 2024. [PMID: 38175524 DOI: 10.1021/acs.joc.3c02331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2024]
Abstract
An expedient and efficient synthetic method for the divergent synthesis of 1-trifluoromethylated cyclopenta[b]indoles that relies on Brønsted acid-catalyzed dehydrative Nazarov-type cyclization of CF3-substituted 3-indolylallyl alcohols is described. Two classes of 1-trifluoromethylated cyclopenta[b]indoles can be easily accessed simply by changing the NH-protecting group of indoles. With arylsulfonyl protected 3-indolylallyl alcohols as starting materials, the reaction provided the arylsulfonyl protected 1-trifluoromethylated cyclopenta[b]indoles in good to excellent yields, whereas pivaloyl (Piv) protected substrates led to the formation of NH-free 1-trifluoromethylated cyclolopenta[b]indoles with another alkenyl isomer. This protocol features tunable chemoselectivity, operational simplicity, excellent functional group compatibility, and mild metal-free conditions.
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Affiliation(s)
- Yuling Teng
- Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forsest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Xiangdong Yu
- Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forsest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Dandan Shang
- Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forsest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Zeliang Wang
- Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forsest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Weidong Rao
- Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forsest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
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2
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Feng L, Teng Y, Yu X, Wang Z, Rao W. Brønsted Acid-Catalyzed Dehydrative Nazarov-Type Cyclization/C2-N1 Cleavage Cascade of Perfluoroalkylated 3-Indolyl(2-benzothienyl)methanols. Org Lett 2023. [PMID: 37384549 DOI: 10.1021/acs.orglett.3c01503] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/01/2023]
Abstract
A novel and unprecedented p-toluenesulfonic acid-catalyzed dehydrative Nazarov-type cyclization/C2-N1 bond cleavage cascade reaction of perfluoroalkylated 3-indolyl(2-benzothienyl)methanols has been developed. This reaction provides an efficient and practical protocol for the construction of highly functionalized benzothiophene-fused cyclopentenones with exclusive stereoselectivity. In addition, this cascade transformation also delineates a rare example of the involvement of the selective C2-N1 bond cleavage of indoles.
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Affiliation(s)
- Li Feng
- Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Yuling Teng
- Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Xiangdong Yu
- Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Zeliang Wang
- Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Weidong Rao
- Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
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3
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Gilles L, Antoniotti S. Spirocyclic Compounds in Fragrance Chemistry: Synthesis and Olfactory Properties. Chempluschem 2022; 87:e202200227. [PMID: 36367229 DOI: 10.1002/cplu.202200227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Revised: 09/27/2022] [Indexed: 11/13/2022]
Abstract
In this Review, both the scientific literature and patents have been analysed to gather, examine and classify synthetic strategies developed to access spirocyclic molecules having olfactory properties of interest for the perfume industry. New structures have been reported at a steady state since 1961 with a particularly intense activity in the 80's. In the diversity of olfactory properties observed, spirocyclic molecules were found to be quite frequently woody, as well as fruity and ambery, among other tonalities. More recent data reflect the evolution of modern synthetic organic chemistry towards bioinspiration, enantioselective reactions, green and sustainable chemistry and biotechnology.
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Affiliation(s)
- Laure Gilles
- Université Côte d'Azur, CNRS, Institut de Chimie de Nice, Parc Valrose, 06108, Nice cedex 2, France.,Alysophil SAS, Bio Parc, 850 bd Sébastien Brant, BP 30170, 67405, Illkirch, France
| | - Sylvain Antoniotti
- Université Côte d'Azur, CNRS, Institut de Chimie de Nice, Parc Valrose, 06108, Nice cedex 2, France
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4
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Zhang Y, Chen Y, Song M, Tan B, Jiang Y, Yan C, Jiang Y, Hu X, Zhang C, Chen W, Xu J. Total Syntheses of Calyciphylline A-Type Alkaloids (-)-10-Deoxydaphnipaxianine A, (+)-Daphlongamine E and (+)-Calyciphylline R via Late-Stage Divinyl Carbinol Rearrangements. J Am Chem Soc 2022; 144:16042-16051. [PMID: 36007885 DOI: 10.1021/jacs.2c05957] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Among the famous Daphniphyllum alkaloids family, the calyciphylline A-type subfamily has triggered particular interest from the organic synthesis community in recent years. Here, we report divergent total syntheses of three calyciphylline A-type alkaloids, namely, (-)-10-deoxydaphnipaxianine A, (+)-daphlongamine E, and (+)-calyciphylline R. Our work highlights an efficient, divergent strategy via late-stage divinyl carbinol rearrangements, including an unprecedented oxidative Nazarov electrocyclization using an unfunctionalized tertiary divinyl carbinol and an unusual allylic alcohol rearrangement. A highly efficient "donor-acceptor" platinum catalyst was used for a critical nitrile hydration step. Moreover, the power of selective amide reductions has also been showcased by novel and classic tactics.
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Affiliation(s)
- Yan Zhang
- Department of Chemistry and Shenzhen Grubbs Institute and Guangdong Provincial Key Laboratory of Catalysis and Shenzhen Key Laboratory of Small Molecule Drug Discovery and Synthesis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Yuye Chen
- Department of Chemistry and Shenzhen Grubbs Institute and Guangdong Provincial Key Laboratory of Catalysis and Shenzhen Key Laboratory of Small Molecule Drug Discovery and Synthesis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Manrong Song
- Department of Chemistry and Shenzhen Grubbs Institute and Guangdong Provincial Key Laboratory of Catalysis and Shenzhen Key Laboratory of Small Molecule Drug Discovery and Synthesis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Bin Tan
- Department of Chemistry and Shenzhen Grubbs Institute and Guangdong Provincial Key Laboratory of Catalysis and Shenzhen Key Laboratory of Small Molecule Drug Discovery and Synthesis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Yujia Jiang
- Department of Chemistry and Shenzhen Grubbs Institute and Guangdong Provincial Key Laboratory of Catalysis and Shenzhen Key Laboratory of Small Molecule Drug Discovery and Synthesis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Chongyuan Yan
- Department of Chemistry and Shenzhen Grubbs Institute and Guangdong Provincial Key Laboratory of Catalysis and Shenzhen Key Laboratory of Small Molecule Drug Discovery and Synthesis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Yuyang Jiang
- Department of Chemistry and Shenzhen Grubbs Institute and Guangdong Provincial Key Laboratory of Catalysis and Shenzhen Key Laboratory of Small Molecule Drug Discovery and Synthesis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Xinyue Hu
- Department of Chemistry and Shenzhen Grubbs Institute and Guangdong Provincial Key Laboratory of Catalysis and Shenzhen Key Laboratory of Small Molecule Drug Discovery and Synthesis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Chengqian Zhang
- Department of Chemistry and Shenzhen Grubbs Institute and Guangdong Provincial Key Laboratory of Catalysis and Shenzhen Key Laboratory of Small Molecule Drug Discovery and Synthesis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Wenqing Chen
- Department of Chemistry and Shenzhen Grubbs Institute and Guangdong Provincial Key Laboratory of Catalysis and Shenzhen Key Laboratory of Small Molecule Drug Discovery and Synthesis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Jing Xu
- Department of Chemistry and Shenzhen Grubbs Institute and Guangdong Provincial Key Laboratory of Catalysis and Shenzhen Key Laboratory of Small Molecule Drug Discovery and Synthesis, Southern University of Science and Technology, Shenzhen 518055, China
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5
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Chang MY, Lin CY. Bi(OTf)3‐Catalyzed Cyclocondensation of Oxygenated Arylacetic Acids with Salicyl Alcohols. Synthesis of 5‐Oxadibenzo[a,d]cycloocten‐6‐ones. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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6
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Chang MY, Lin CY, Chen SM. Synthesis of 1‐Aryl Isoquinolinones or o‐Diaryl Pyrimidines via Bismuth Triflate‐Mediated Intermolecular Annulation of Arylacetic Acids with Nitroarylaldehydes or Trimethoxybenzene in the Presence of Acetonitrile. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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7
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Mondal B, Jagadeesh C, Das D, Saha J. An acid-promoted pseudocine substitution manifold of γ-aminocyclopentenone enables divergent access to polycyclic indole derivatives. Chem Commun (Camb) 2022; 58:2504-2507. [PMID: 35089294 DOI: 10.1039/d1cc06883k] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
We demonstrated γ-aminocyclopentenones to be a suitable surrogate for reactive cyclopentadienone via a pseudocine-substitution manifold. This approach enabled its orchestrated annulation with "tailored" bis-nucleophiles and to furnish complex β,γ-annulated cyclopentanoids or indole-based polycyclic architectures. This strategy represents a generalized means for direct, regioselective and stereoselective β,γ-functionalization of monosubstituted or unsubstituted aminocyclopentenones.
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Affiliation(s)
- Biplab Mondal
- Department of Biological and Synthetic Chemistry, Centre of Biomedical Research (CBMR), SGPGIMS Campus. Raebareli Road, Lucknow 226014, Uttar Pradesh, India.
| | - Chenna Jagadeesh
- Department of Biological and Synthetic Chemistry, Centre of Biomedical Research (CBMR), SGPGIMS Campus. Raebareli Road, Lucknow 226014, Uttar Pradesh, India.
| | - Dinabandhu Das
- School of Physical Sciences, Jawaharlal Nehru University, New Delhi-110067, India
| | - Jaideep Saha
- Department of Biological and Synthetic Chemistry, Centre of Biomedical Research (CBMR), SGPGIMS Campus. Raebareli Road, Lucknow 226014, Uttar Pradesh, India.
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8
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Chang MY, Lin CY, Chen SM, Hsiao YT. Bsi(OTf) 3-mediated tandem annulation of 1-aryl isochroman-3-ones with oxygenated arenes: one-pot synthesis of polyoxygenated homotriptycenes. Org Biomol Chem 2021; 19:4733-4742. [PMID: 33970174 DOI: 10.1039/d1ob00606a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Bi(OTf)3 (bismuth triflate)-mediated one-pot tandem annulation of oxygenated 1-aryl isochroman-3-ones with oxygenated arenes provides polyoxygenated homotriptycenes in moderate to good yields in MeNO2 at reflux (101 °C) for 10 h under an air atmosphere and easy-operational conditions via intermolecular and intramolecular Friedel-Crafts type procedures. A plausible mechanism is proposed and discussed. This protocol provides a highly effective ring-closure via three carbon-carbon (C-C) bond formations.
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Affiliation(s)
- Meng-Yang Chang
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 807, Taiwan. and Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan
| | - Chun-Yi Lin
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
| | - Shin-Mei Chen
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
| | - Yu-Ting Hsiao
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
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9
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Li S, Li Y, Feng B, Liang J, You G, Liu X, Xian L. Bi(iii)-catalyzed aminooxygenation of propargyl amidines to synthesize 2-fluoroalkyl imidazole-5-carbaldehydes and their decarbonylations. Chem Commun (Camb) 2020; 56:6400-6403. [PMID: 32390034 DOI: 10.1039/d0cc02143a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
The first example of main group metal Bi(iii)-catalyzed aminooxygenation of fluorinated propargyl amidines was developed to produce 2-fluoroalkyl imidazole-5-carbaldehydes in moderate to excellent yields, in which phenol played a critical role and could be recovered and recycled. In the presence of KOt-Bu, an unconventional decarbonylation occurred on the 2-fluoroalkyl imidazole-5-carbaldehydes.
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Affiliation(s)
- Shan Li
- Key Laboratory of Regional Ecological Environment Analysis and Pollution Control of West Guangxi, College of Chemistry and Environment Engineering, Baise University, 21 Zhongshan No. 2 Road, Baise, 533000, China.
| | - Yajun Li
- State Key Laboratory of Structural Chemistry, Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, University of Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou, 350002, China
| | - Bin Feng
- Key Laboratory of Regional Ecological Environment Analysis and Pollution Control of West Guangxi, College of Chemistry and Environment Engineering, Baise University, 21 Zhongshan No. 2 Road, Baise, 533000, China.
| | - Jian Liang
- Key Laboratory of Regional Ecological Environment Analysis and Pollution Control of West Guangxi, College of Chemistry and Environment Engineering, Baise University, 21 Zhongshan No. 2 Road, Baise, 533000, China.
| | - Geyun You
- Key Laboratory of Regional Ecological Environment Analysis and Pollution Control of West Guangxi, College of Chemistry and Environment Engineering, Baise University, 21 Zhongshan No. 2 Road, Baise, 533000, China.
| | - Xiaofeng Liu
- Key Laboratory of Regional Ecological Environment Analysis and Pollution Control of West Guangxi, College of Chemistry and Environment Engineering, Baise University, 21 Zhongshan No. 2 Road, Baise, 533000, China.
| | - Liqing Xian
- School of Materials Science and Engineering, Baise University, Baise, 533000, China
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10
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Ali S, Gattu R, Singh V, Mondal S, Khan AT, Dubey G, Bharatam PV. Reaction behaviour of arylamines with nitroalkenes in the presence of bismuth(iii) triflate: an easy access to 2,3-dialkylquinolines. Org Biomol Chem 2020; 18:1785-1793. [DOI: 10.1039/c9ob02214g] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
We report the reaction behaviour of arylamines with nitroalkenes in the presence of bismuth(iii) triflate (10 mol%) and diacetoxyiodobenzene (10 mol%).
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Affiliation(s)
- Saghir Ali
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Guwahati-781039
- India
| | - Radhakrishna Gattu
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Guwahati-781039
- India
| | - Varun Singh
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Guwahati-781039
- India
| | - Santa Mondal
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Guwahati-781039
- India
| | - Abu T. Khan
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Guwahati-781039
- India
| | - Gurudutt Dubey
- Department of Medicinal Chemistry
- National Institute of Pharmaceutical Education and Research (NIPER)
- S.A.S. Nagar-160062
- India
| | - P. V. Bharatam
- Department of Medicinal Chemistry
- National Institute of Pharmaceutical Education and Research (NIPER)
- S.A.S. Nagar-160062
- India
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11
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Affiliation(s)
- Luisa Lempenauer
- Université Côte d'Azur, CNRSInstitut de Chimie de Nice UMR 7272 Parc Valrose 06108 Nice Cedex 2 France
| | - Gilles Lemière
- Sorbonne Université, CNRSInstitut Parisien de Chimie Moléculaire 4 Place Jussieu, CC 229 75252 Paris Cedex 05 France
| | - Elisabet Duñach
- Université Côte d'Azur, CNRSInstitut de Chimie de Nice UMR 7272 Parc Valrose 06108 Nice Cedex 2 France
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12
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Xu B, Wang B, Xun W, Qiu FG. Total Synthesis of (−)‐Daphenylline. Angew Chem Int Ed Engl 2019; 58:5754-5757. [DOI: 10.1002/anie.201902268] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Indexed: 02/04/2023]
Affiliation(s)
- Bo Xu
- State Key Laboratory of Respiratory DiseaseGuangzhou Institutes of Biomedicine and HealthChinese Academy of Sciences 190 Kaiyuan Avenue Guangzhou 510530 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Bingyang Wang
- State Key Laboratory of Respiratory DiseaseGuangzhou Institutes of Biomedicine and HealthChinese Academy of Sciences 190 Kaiyuan Avenue Guangzhou 510530 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Wen Xun
- State Key Laboratory of Respiratory DiseaseGuangzhou Institutes of Biomedicine and HealthChinese Academy of Sciences 190 Kaiyuan Avenue Guangzhou 510530 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Fayang G. Qiu
- State Key Laboratory of Respiratory DiseaseGuangzhou Institutes of Biomedicine and HealthChinese Academy of Sciences 190 Kaiyuan Avenue Guangzhou 510530 China
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13
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Affiliation(s)
- Bo Xu
- State Key Laboratory of Respiratory DiseaseGuangzhou Institutes of Biomedicine and HealthChinese Academy of Sciences 190 Kaiyuan Avenue Guangzhou 510530 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Bingyang Wang
- State Key Laboratory of Respiratory DiseaseGuangzhou Institutes of Biomedicine and HealthChinese Academy of Sciences 190 Kaiyuan Avenue Guangzhou 510530 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Wen Xun
- State Key Laboratory of Respiratory DiseaseGuangzhou Institutes of Biomedicine and HealthChinese Academy of Sciences 190 Kaiyuan Avenue Guangzhou 510530 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Fayang G. Qiu
- State Key Laboratory of Respiratory DiseaseGuangzhou Institutes of Biomedicine and HealthChinese Academy of Sciences 190 Kaiyuan Avenue Guangzhou 510530 China
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14
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Alachouzos G, Frontier AJ. Cationic Cascade for Building Complex Polycyclic Molecules from Simple Precursors: Diastereoselective Installation of Three Contiguous Stereogenic Centers in a One-Pot Process. J Am Chem Soc 2018; 141:118-122. [DOI: 10.1021/jacs.8b11713] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Georgios Alachouzos
- Department of Chemistry, University of Rochester, 414 Hutchison Hall, 100 Trustee Road, Rochester, New York 14627-0216, United States
| | - Alison J. Frontier
- Department of Chemistry, University of Rochester, 414 Hutchison Hall, 100 Trustee Road, Rochester, New York 14627-0216, United States
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15
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Lempenauer L, Soupart A, Lemière G, Duñach E. Synthesis and olfactory evaluation of allylic α‐quaternary ether ketones. FLAVOUR FRAG J 2018. [DOI: 10.1002/ffj.3481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Luisa Lempenauer
- UMR 7272, CNRS, Institut de Chimie de NiceUniversité Côte d'Azur Nice France
| | - Aline Soupart
- UMR 7272, CNRS, Institut de Chimie de NiceUniversité Côte d'Azur Nice France
| | - Gilles Lemière
- UMR 7272, CNRS, Institut de Chimie de NiceUniversité Côte d'Azur Nice France
| | - Elisabet Duñach
- UMR 7272, CNRS, Institut de Chimie de NiceUniversité Côte d'Azur Nice France
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16
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Lempenauer L, Soupart A, Duñach E, Lemière G. Synthesis of α-oxygenated β,γ-unsaturated ketones by a catalytic rearrangement strategy. Org Biomol Chem 2018; 16:5441-5445. [PMID: 30019736 DOI: 10.1039/c8ob01559g] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A straightforward two-step entry to α-oxgenated β,γ-unsaturated ketones from readily available α,β-unsaturated ketones is disclosed. It was found that bis(allylic) alcohols undergo a skeletal rearrangement in the presence of 1 mol% of cheap and non-corrosive p-toluenesulfonic acid. Computational studies were conducted to support the mechanism and to rationalise the influence of the catalyst acidity on the product selectivity.
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Affiliation(s)
- Luisa Lempenauer
- Université Côte d'Azur, Institut de Chimie de Nice, UMR 7272 CNRS, Parc Valrose, 06108 Nice Cedex 2, France.
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17
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Jin J, Zhao Y, Gouranourimi A, Ariafard A, Hong Chan PW. Chiral Brønsted Acid Catalyzed Enantioselective Dehydrative Nazarov-Type Electrocyclization of Aryl and 2-Thienyl Vinyl Alcohols. J Am Chem Soc 2018; 140:5834-5841. [PMID: 29631393 DOI: 10.1021/jacs.8b02339] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
An efficient chiral Brønsted acid-catalyzed enantioselective dehydrative Nazarov-type electrocyclization (DNE) of electron-rich aryl- and 2-thienyl-β-amino-2-en-1-ols is described. The 4π conrotatory electrocyclization reaction affords access to a wide variety of the corresponding 1 H-indenes and 4 H-cyclopenta[ b]thiophenes in excellent yields of up to 99% and enantiomeric excess (ee) values of up to 99%. Experimental and computational studies based on a proposed intimate contact ion-pair species that is further assisted by hydrogen bonding between the amino group of the substrate cation and chiral catalyst anion provide insight into the observed product enantioselectivities.
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Affiliation(s)
- Jianwen Jin
- School of Chemistry , Monash University , Clayton , Victoria 3800 , Australia
| | - Yichao Zhao
- School of Chemistry , Monash University , Clayton , Victoria 3800 , Australia
| | - Ali Gouranourimi
- School of Physical Sciences-Chemistry , University of Tasmania , Hobart , Tasmania 7001 , Australia
| | - Alireza Ariafard
- School of Physical Sciences-Chemistry , University of Tasmania , Hobart , Tasmania 7001 , Australia
| | - Philip Wai Hong Chan
- School of Chemistry , Monash University , Clayton , Victoria 3800 , Australia.,Department of Chemistry , University of Warwick , Coventry , CV4 7AL , United Kingdom
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18
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Ondet P, Filippi JJ, Lemière G, Duñach E. Stereocontrolled Cascade Cyclisation of Campholenic Enol Ether Derivatives: En Route to Vetiver-Scented Spiroxides. European J Org Chem 2018. [DOI: 10.1002/ejoc.201701578] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Pierrick Ondet
- Institut de Chimie de Nice; CNRS; Université Côte d'Azur; Parc Valrose 06108 Nice cedex 2 France
| | - Jean-Jacques Filippi
- Institut de Chimie de Nice; CNRS; Université Côte d'Azur; Parc Valrose 06108 Nice cedex 2 France
| | - Gilles Lemière
- Institut de Chimie de Nice; CNRS; Université Côte d'Azur; Parc Valrose 06108 Nice cedex 2 France
| | - Elisabet Duñach
- Institut de Chimie de Nice; CNRS; Université Côte d'Azur; Parc Valrose 06108 Nice cedex 2 France
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19
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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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20
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Martin MC, Sandridge MJ, Williams CW, Francis ZA, France S. Dehydrative Nazarov-type electrocyclizations of alkenyl (hetero)aryl carbinols via calcium catalysis: Access to cyclopenta[b]thiophenes and indene derivatives. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.03.041] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Three-component coupling of acetylenic sulfones, Grignard reagents and α, β-unsaturated carbonyls: A convenient synthesis of diallylic alcohols. J Organomet Chem 2016. [DOI: 10.1016/j.jorganchem.2016.10.026] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Ondet P, Plessis C, Lemière G, Duñach E. Synthesis and olfactory evaluation of spiro tricyclic diether structures. FLAVOUR FRAG J 2016. [DOI: 10.1002/ffj.3361] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Pierrick Ondet
- Université Côte d'Azur, CNRS; Institut de Chimie de Nice; UMR 7272 Parc Valrose 06108 Nice Cedex 2 France
| | - Caroline Plessis
- MANE; Centre de Recherche en Chimie Organique; 620 route de Grasse 06620 Le Bar-sur-Loup France
| | - Gilles Lemière
- Université Côte d'Azur, CNRS; Institut de Chimie de Nice; UMR 7272 Parc Valrose 06108 Nice Cedex 2 France
| | - Elisabet Duñach
- Université Côte d'Azur, CNRS; Institut de Chimie de Nice; UMR 7272 Parc Valrose 06108 Nice Cedex 2 France
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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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Liang Y, Lai J, Liu T, Tang S. Direct Regioselective [3 + 2]-Cyclization Reactions of Ambivalent Electrophilic/Nucleophilic β-Chlorovinyl Dithianes: Access to Cyclopentene Derivatives. Org Lett 2016; 18:5086-5089. [PMID: 27624691 DOI: 10.1021/acs.orglett.6b02536] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The highly regioselective and operationally straightforward [3 + 2] cyclizations of β-chlorovinyl dithianes with α,β-unsaturated carbonyl compounds have been developed. This protocol provides direct access to highly functionalized cyclopentenes with perfect chemo- and regioselectivities under extremely mild reaction conditions. In particular, the unprecedented cyclization allows for the selective preparation of hydroxylated cyclopentenes.
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Affiliation(s)
- Yongping Liang
- School of Pharmacy and ‡State Key Laboratory of Applied Organic Chemistry, Lanzhou University , Lanzhou 730000, P. R. China
| | - Junshan Lai
- School of Pharmacy and ‡State Key Laboratory of Applied Organic Chemistry, Lanzhou University , Lanzhou 730000, P. R. China
| | - Teng Liu
- School of Pharmacy and ‡State Key Laboratory of Applied Organic Chemistry, Lanzhou University , Lanzhou 730000, P. R. China
| | - Shouchu Tang
- School of Pharmacy and ‡State Key Laboratory of Applied Organic Chemistry, Lanzhou University , Lanzhou 730000, P. R. China
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