1
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Noori S, Ghorbani-Vaghei R, Azadbakht R, Karamshahi Z, Koolivand M. Graphene-oxide/schiff base N2O4 ligand-palladium: A new catalyst for the synthesis of furan derivatives. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.131849] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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2
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Bruña S, Kennedy AR, Fairley M, O'Hara CT. Facile Access to Hetero-poly-functional Arenes and meta-Substituted Arenes via Two-Step Dimetalation and Mg/Halogen-Exchange Protocol. Chemistry 2021; 27:4134-4140. [PMID: 33201552 DOI: 10.1002/chem.202004696] [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: 10/23/2020] [Indexed: 11/07/2022]
Abstract
The Grignard reagent, iPrMgCl and its lithium chloride-enhanced 'turbo' derivative iPrMgCl⋅LiCl have been employed to investigate the single iodo/magnesium exchange reactions of the trisubstituted arenes, 2,5-diiodo-N,N-diisopropylbenzamide 1, 1,4-diiodo-2-methoxybenzene 2, and 1,4-diiodo-2-(trifluoromethyl)benzene 3. These three arenes themselves were initially prepared by a double ortho-, meta'-deprotonation of N,N-diisopropylbenzamide, anisole and (trifluoromethyl)benzene, respectively, using the sodium magnesiate reagent [Na4 Mg2 (TMP)6 (nBu)2 ] (where TMP is 2,2,6,6-tetramethylpiperidide), and subsequent electrophilic quenching with iodine/THF solution. Thus, by following a combined deprotonation and magnesium/halogen exchange strategy, the simple monosubstituted arenes can be converted to trisubstituted diiodoarenes, which can ultimately be transformed into the corresponding mono-magnesiated arenes, in THF at -40 °C, within seconds in good yields. The other functional group (OMe, NiPr2 or CF3 respectively) present on the di-iodoarenes helps direct the exchange reaction to the ortho position, whereas subsequent addition of different electrophiles permits the preparation of hetero-poly-functional-arenes, with three different substituents in their structure. Intriguingly, if water is used as the electrophile, a new and facile route to prepare meta-substituted arenes, which cannot be easily obtained by conventional processes, is forthcoming. In contrast to directed ortho-metalation (DoM) chemistry, this reaction sequence can be thought of as InDirect meta-Metalation (IDmM). The scope of the chemistry has been tested further by exposing the initial unreacted iodo-functionality at the meta-position to a second Mg/I-exchange reaction and subsequent functionalization.
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Affiliation(s)
- Sonia Bruña
- Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow, G1 1XL, Scotland
| | - Alan R Kennedy
- Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow, G1 1XL, Scotland
| | - Michael Fairley
- Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow, G1 1XL, Scotland
| | - Charles T O'Hara
- Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow, G1 1XL, Scotland
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3
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Hao F, Wang X, Mohammadnia M. Preparation and Characterization of a Novel Magnetic Nano Catalyst for Synthesis and Antibacterial Activities of Novel Furan-2(5 H)-Ones Derivatives. Polycycl Aromat Compd 2021. [DOI: 10.1080/10406638.2021.1887298] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Feng Hao
- Department of Light Industry and Chemical Engineering, ChiFeng Industry Vocational Technology College, Chifeng, Inner Mongolia, China
| | - Xia Wang
- Chemical Engineering Department, Hulunbeir, Inner Mongolia, China
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4
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Said MS, Udavant R, Sahu AK, Khan A, Nayak R, Dastager SG, Kumar P, Gajbhiye J. Total synthesis of (-)-2-methoxy-2-butenolide-3-cinnamate and its antimicrobial potentials. Nat Prod Res 2020; 35:5177-5182. [PMID: 32643424 DOI: 10.1080/14786419.2020.1789979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
The first total synthesis of (-)-2-methoxy-2-butenolide-3-cinnamate (butenolide cinnamate) was achieved using commercially available starting material. The synthesized compound was found to have promising antibacterial activity against Gram-negative strains Escherichia coli (ATCC 8739), Salmonella typhimurium (ATCC 23564) and Pseudomonas aeruginosa (ATCC 19154) with a minimum inhibitory concentration of 2.0 µg/mL, 1.0 µg/mL and 2.0 µg/mL, respectively. Notably, the compound was more potent against Gram-negative test strains than the Gram-positive test strains.
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Affiliation(s)
- Madhukar S Said
- Division of Organic Chemistry, National Chemical Laboratory, Pune, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Rohini Udavant
- Division of Organic Chemistry, National Chemical Laboratory, Pune, India
| | - Amit Kumar Sahu
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India.,NCIM-Resource Center, CSIR-National Chemical Laboratory, Pune, India
| | - AbuJunaid Khan
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India.,NCIM-Resource Center, CSIR-National Chemical Laboratory, Pune, India
| | - Rashmi Nayak
- Division of Organic Chemistry, National Chemical Laboratory, Pune, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Syed G Dastager
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India.,NCIM-Resource Center, CSIR-National Chemical Laboratory, Pune, India
| | - Pradeep Kumar
- Division of Organic Chemistry, National Chemical Laboratory, Pune, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Jayant Gajbhiye
- Division of Organic Chemistry, National Chemical Laboratory, Pune, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
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5
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Adamkiewicz A, Węglarz I, Butkiewicz A, Woyciechowska M, Mlynarski J. Lewis Acid‐Catalyzed Stereoselective α‐Addition of Chiral Aldehydes to Cyclic Dienol Silanes: Aqueous Synthesis of Chiral Butenolides. Adv Synth Catal 2020. [DOI: 10.1002/adsc.201901218] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Anna Adamkiewicz
- Faculty of Chemistry Jagiellonian University Gronostajowa 2 30-387 Krakow Poland
| | - Izabela Węglarz
- Institute of Organic Chemistry Polish Academy of Sciences Kasprzaka 44/52 Warsaw Poland
| | - Aleksandra Butkiewicz
- Institute of Organic Chemistry Polish Academy of Sciences Kasprzaka 44/52 Warsaw Poland
| | - Marta Woyciechowska
- Faculty of Chemistry Jagiellonian University Gronostajowa 2 30-387 Krakow Poland
| | - Jacek Mlynarski
- Institute of Organic Chemistry Polish Academy of Sciences Kasprzaka 44/52 Warsaw Poland
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6
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Bao J, Tian H, Yang P, Deng J, Gui J. Modular Synthesis of Functionalized Butenolides by Oxidative Furan Fragmentation. European J Org Chem 2020. [DOI: 10.1002/ejoc.201901613] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Jiajing Bao
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances; Center for Excellence in Molecular Synthesis; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
| | - Hailong Tian
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances; Center for Excellence in Molecular Synthesis; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
| | - Peicheng Yang
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances; Center for Excellence in Molecular Synthesis; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
| | - Jiachen Deng
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances; Center for Excellence in Molecular Synthesis; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
| | - Jinghan Gui
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances; Center for Excellence in Molecular Synthesis; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
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7
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Comparative studies of palladium and copper-catalysed γ-arylation of silyloxy furans with diaryliodonium salts. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.02.042] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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8
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Kumar R, Singh RM. Metal-free POCl3 promoted stereoselective hydrochlorination of ethynylated azaheterocycles. Org Biomol Chem 2019; 17:5990-5996. [DOI: 10.1039/c9ob00841a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
An efficient stereoselective hydrochlorination of ethynylated azaheterocycles was achieved using POCl3 as a chlorinating agent under metal-free reaction conditions.
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Affiliation(s)
- Ritush Kumar
- Department of Chemistry
- Indian Institute of Technology Guwahati
- India
- Department of Chemistry
- Institute of Science
| | - Radhey M. Singh
- Department of Chemistry
- Institute of Science
- Centre of Advanced Study
- Banaras Hindu University
- Varanasi-221005
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9
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Asheri O, Habibi-Khorassani SM, Shahraki M. A Study on the Kinetics and Mechanism of the One-Pot Formation of 3,4,5-Substituted Furan-2(5H)-Ones in the Presence of Lactic Acid: Effect of Different Substituents. PROGRESS IN REACTION KINETICS AND MECHANISM 2018. [DOI: 10.3184/146867818x15319903829218] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The kinetics of the reaction between para-substituted anilines and dimethyl acetylenedicarboxylate (DMAD) with derivatives of benzaldehyde for the one-pot formation of 3,4,5-substituted furan-2(5 H)-ones in the presence of lactic acid as a catalyst have been studied spectrophotometrically at different temperatures. A mechanism involving four steps was proposed for the reactions, all of which followed second-order kinetics. The partial orders with respect to substituted aniline and DMAD were one and one and the reactions revealed zero-order kinetics for benzaldehyde and its derivatives. Changing of substituents on benzaldehyde left rates of reaction unaffected. However, various substituents on aniline showed that para electron-withdrawing groups decreased the rate of reaction. According to investigation of an isokinetic relationship, a common mechanism exists for all studied substituents and a general mechanism can be formulated. Kinetic values ( k and Ea) and associated activation parameters (Δ G‡, Δ S‡ and Δ H‡) of the reactions were determined.
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Affiliation(s)
- Osman Asheri
- Department of Chemistry, Faculty of Science, University of Sistan and Baluchestan, PO Box 98135-674, Zahedan, Iran
| | | | - Mehdi Shahraki
- Department of Chemistry, Faculty of Science, University of Sistan and Baluchestan, PO Box 98135-674, Zahedan, Iran
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10
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Xin YX, Pan S, Huang Y, Xu XH, Qing FL. Copper-Catalyzed Sulfenylation, Sulfonylation, and Selenylation of 2,3-Allenoic Acids with Disulfides or Diselenides. J Org Chem 2018; 83:6101-6109. [DOI: 10.1021/acs.joc.8b00858] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ya-Xun Xin
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, 2999 North Renmin Lu, Shanghai 201620, China
| | - Shen Pan
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, 2999 North Renmin Lu, Shanghai 201620, China
| | - Yangen Huang
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, 2999 North Renmin Lu, Shanghai 201620, China
| | - Xiu-Hua Xu
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
| | - Feng-Ling Qing
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, 2999 North Renmin Lu, Shanghai 201620, China
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
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11
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Talbi A, Bsaibess T, Efrit ML, M'Rabet H, Gaucher A, Prim D. Straightforward and Regioselective Access to Unsaturated α-Benzyl Butyrolactones. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700895] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Arbia Talbi
- Université de Tunis El Manar; Faculté des Sciences de Tunis; Laboratoire de Synthèse Organique Sélective et Hétérocyclique-Evaluation de l'Activité Biologique; 2092 Tunis Tunisie
- Université de Versailles Saint Quentin-en-Yvelines; Institut Lavoisier de Versailles-UMR CNRS 8180; 45 avenue des Etats-Unis 78035 Versailles France
| | - Talia Bsaibess
- Université de Versailles Saint Quentin-en-Yvelines; Institut Lavoisier de Versailles-UMR CNRS 8180; 45 avenue des Etats-Unis 78035 Versailles France
| | - Mohamed Lotfi Efrit
- Université de Tunis El Manar; Faculté des Sciences de Tunis; Laboratoire de Synthèse Organique Sélective et Hétérocyclique-Evaluation de l'Activité Biologique; 2092 Tunis Tunisie
| | - Hédi M'Rabet
- Université de Tunis El Manar; Faculté des Sciences de Tunis; Laboratoire de Synthèse Organique Sélective et Hétérocyclique-Evaluation de l'Activité Biologique; 2092 Tunis Tunisie
| | - Anne Gaucher
- Université de Versailles Saint Quentin-en-Yvelines; Institut Lavoisier de Versailles-UMR CNRS 8180; 45 avenue des Etats-Unis 78035 Versailles France
| | - Damien Prim
- Université de Versailles Saint Quentin-en-Yvelines; Institut Lavoisier de Versailles-UMR CNRS 8180; 45 avenue des Etats-Unis 78035 Versailles France
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12
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Crimmins MT, Zhang Y, Williams PS. Approach to the Synthesis of Briarane Diterpenes through a Dianionic Claisen Rearrangement and Ring-Closing Metathesis. Org Lett 2017; 19:3907-3910. [DOI: 10.1021/acs.orglett.7b01806] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Michael T. Crimmins
- Kenan, Caudill, Venable,
and Murray Laboratories of Chemistry University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Yan Zhang
- Kenan, Caudill, Venable,
and Murray Laboratories of Chemistry University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Philip S. Williams
- Kenan, Caudill, Venable,
and Murray Laboratories of Chemistry University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
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13
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Kangani M, Hazeri N, Maghsoodlou MT. Synthesis of pyrrole and furan derivatives in the presence of lactic acid as a catalyst. JOURNAL OF SAUDI CHEMICAL SOCIETY 2017. [DOI: 10.1016/j.jscs.2015.03.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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14
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Song X, Xue F, Feng Z, Wang Y, Wang Z, Xi Y. A Combined Experimental and Theoretical Study on the Reaction Mechanism and Molecular Structure of 4-(Diphenylamino)-3-iodo-2(5H)-furanone. Aust J Chem 2017. [DOI: 10.1071/ch16616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The simultaneous α-iodination and Nβ-arylation mechanism of 5-alkyloxy-4-phenylamino-2(5H)-furanone by (diacetoxyiodo)benzene was investigated by means of density functional theory (DFT) with B3LYP/6-31G*//LANL2DZ, selecting 4-(diphenylamino)-5-methyloxy-3-iodo-2(5H)-furanone as the calculation model. In addition, the effect of solvent on the reaction pathway was investigated using the Polarisable Continuum Model (PCM). Good agreement was found between the computational and the experimental results. Furthermore, single crystals of 4-(diphenylamino)-5-ethoxy-3-iodo-2(5H)-furanone were grown by slow evaporation technique. The molecular structure analysis was performed by single crystal X-ray analysis and theoretical calculations using a semi-empirical quantum chemical method and DFT/B3LYP methods with a LANL2DZ as basis set.
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15
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Mao W, Zhu C. Efficient synthesis of multiply substituted butenolides from keto acids and terminal alkynes promoted by combined acids. Org Chem Front 2017. [DOI: 10.1039/c6qo00820h] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
A general and efficient approach to highly substituted butenolides through the annulation of keto acids and terminal alkynes is described.
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Affiliation(s)
- Wenbin Mao
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou
| | - Chen Zhu
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou
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16
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Karak M, Acosta JAM, Barbosa LCA, Boukouvalas J. Late-Stage Bromination Enables the Synthesis of Rubrolides B, I, K, and O. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600473] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Milandip Karak
- Department of Chemistry; Universidade Federal de Minas Gerais; Av. Pres. Antônio Carlos, 6627, Campus Pampulha CEP 31270-901 Belo Horizonte MG Brazil
- Department of Chemistry; Universidade Federal de Viçosa; Av. Peter Henry Rolfs, s/n Campus Universitário CEP 36570-900 Viçosa MG Brazil
| | - Jaime A. M. Acosta
- Department of Chemistry; Universidade Federal de Minas Gerais; Av. Pres. Antônio Carlos, 6627, Campus Pampulha CEP 31270-901 Belo Horizonte MG Brazil
| | - Luiz C. A. Barbosa
- Department of Chemistry; Universidade Federal de Minas Gerais; Av. Pres. Antônio Carlos, 6627, Campus Pampulha CEP 31270-901 Belo Horizonte MG Brazil
- Department of Chemistry; Universidade Federal de Viçosa; Av. Peter Henry Rolfs, s/n Campus Universitário CEP 36570-900 Viçosa MG Brazil
| | - John Boukouvalas
- Department of Chemistry; Universidade Federal de Minas Gerais; Av. Pres. Antônio Carlos, 6627, Campus Pampulha CEP 31270-901 Belo Horizonte MG Brazil
- Department of Chemistry; Université Laval; Pavillon Alexandre-Vachon, 1045 Avenue de la Médecine G1V 0A6 Quebec City, Quebec Canada
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17
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Kotzabasaki V, Vassilikogiannakis G, Stratakis M. Regiocontrolled Synthesis of γ-Hydroxybutenolides via Singlet Oxygen-Mediated Oxidation of 2-Thiophenyl Furans. J Org Chem 2016; 81:4406-11. [DOI: 10.1021/acs.joc.6b00660] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | | | - Manolis Stratakis
- Department of Chemistry, University of Crete, 71003 Voutes, Iraklion, Greece
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18
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Vitamin B12: An efficient type catalyst for the one-pot synthesis of 3,4,5-trisubstituted furan-2(5 H )-ones and N -aryl-3-aminodihydropyrrol-2-one-4-carboxylates. CHINESE CHEM LETT 2016. [DOI: 10.1016/j.cclet.2015.07.025] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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19
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Kiran Kumar Y, Ranjith Kumar G, Sridhar Reddy M. Hg/Pt-catalyzed conversion of bromo alkynamines/alkynols to saturated and unsaturated γ-butyrolactams/lactones via intramolecular electrophilic cyclization. Org Biomol Chem 2015; 14:1252-60. [PMID: 26647118 DOI: 10.1039/c5ob02125a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Convenient and general Hg(ii)/Pt(iv) catalyzed syntheses of γ-butyrolactams and α,β-unsaturated γ-butyrolactones/lactams are described via intramolecular electrophilic cyclizations of bromoalkynes with tosylamino and hydroxyl tethers. The reaction features the use of wet solvents, the exclusion of any base and additive, mild conditions and practical yields. We also synthesised few chiral lactams through this pathway. Additionally, it is shown that the NHTs group distanced further from the homopropargylic position assists regioselective bromoalkyne hydration to yield useful α-bromoketones. Furthermore, Boc protected bromo homo propargyl amines undergo 6-endo-dig cyclization through Boc oxygen to give bromomethylene substituted oxazinones.
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Affiliation(s)
- Yalla Kiran Kumar
- Medicinal & Process Chemistry Division, CSIR-Central Drug Research Institute, BS-10/1, Sector 10, Jankipuram Extension, Sitapur Road, Lucknow 226031, India.
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20
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Mao W, Zhu C. Synergistic Acid-Promoted Synthesis of Highly Substituted Butenolides via the Annulation of Keto Acids and Tertiary Alcohols. Org Lett 2015; 17:5710-3. [DOI: 10.1021/acs.orglett.5b03026] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Wenbin Mao
- Key Laboratory of Organic Synthesis of Jiangsu Province,
College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 199 Ren-Ai Road, Suzhou, Jiangsu 215123, People’s Republic of China
| | - Chen Zhu
- Key Laboratory of Organic Synthesis of Jiangsu Province,
College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 199 Ren-Ai Road, Suzhou, Jiangsu 215123, People’s Republic of China
- Key Laboratory of Synthetic Chemistry of
Natural Substances, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, People’s Republic of China
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21
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Cheng Y, Ding WH, Long Q, Zhao M, Yang J, Li XQ. Synthesis of stable isotopically labelled 3-methylfuran-2(5H)-one and the corresponding strigolactones. J Labelled Comp Radiopharm 2015; 58:355-60. [PMID: 26179068 DOI: 10.1002/jlcr.3311] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2015] [Revised: 05/24/2015] [Accepted: 05/26/2015] [Indexed: 01/30/2023]
Abstract
Conventional synthetic procedures of strigolactones (SLs) involve the independent synthesis of ring ABC and ring D, followed by a coupling of the two fragments. Here we prepared three kinds of stable, isotopically labelled D-ring analogues productively using a facile protocol. Then, a coupling of the D-rings to ring ABC produced three isotope-labelled SL derivatives. Moreover, (+)-D3-2'-epi-1A and (-)-ent-D3-2'-epi-1A with high enantiomeric purity were obtained via chiral resolution.
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Affiliation(s)
- Yun Cheng
- Institute of Applied Chemistry, East China University of Science and Technology, 130 Mei Long Road, Shanghai, 200237, China
| | - Wen-hui Ding
- Institute of Applied Chemistry, East China University of Science and Technology, 130 Mei Long Road, Shanghai, 200237, China
| | - Qin Long
- Institute of Applied Chemistry, East China University of Science and Technology, 130 Mei Long Road, Shanghai, 200237, China
| | - Min Zhao
- Institute of Applied Chemistry, East China University of Science and Technology, 130 Mei Long Road, Shanghai, 200237, China
| | - Jun Yang
- Center for Advanced materials, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 354 Ling Ling Lu, Shanghai, 200032, China
| | - Xiao-qiang Li
- Center for Advanced materials, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 354 Ling Ling Lu, Shanghai, 200032, China
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22
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Xie M, Wang J, Fang K, Wang S, Yan L. Regio- and stereoselective synthesis of (E)-β-halo alkenyl ketones/sulfones via haloallylation of alkynyl ketones/sulfones. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.05.098] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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23
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Gandeepan P, Rajamalli P, Cheng CH. Rhodium(III)-Catalyzed [4+1] Annulation of Aromatic and Vinylic Carboxylic Acids with Allenes: An Efficient Method Towards Vinyl-Substituted Phthalides and 2-Furanones. Chemistry 2015; 21:9198-203. [DOI: 10.1002/chem.201501106] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2015] [Indexed: 11/09/2022]
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Steinkamp AD, Frings M, Thomé I, Schiffers I, Bolm C. Asymmetric Copper-Catalyzed Vinylogous Mukaiyama Michael Addition of Cyclic Dienol Silanes to Unsaturated α-Keto Phosphonates. Chemistry 2015; 21:7705-8. [DOI: 10.1002/chem.201500861] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2015] [Indexed: 11/07/2022]
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25
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Yuan L, Huang W, Zhou K, Wang Y, Dong W, Du G, Gao X, Ma Y, Hu Q. Butyrolactones derivatives from the fermentation products of a plant entophytic fungusPenicillium oxalicum. Nat Prod Res 2015; 29:1914-9. [DOI: 10.1080/14786419.2015.1013473] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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26
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Ye YQ, Xia CF, Yang JX, Yang YC, Qin Y, Gao XM, Du G, Li XM, Hu QF. Butyrolactones Derivatives from the Fermentation Products of an Endophytic Fungus Aspergillus versicolor. B KOREAN CHEM SOC 2014. [DOI: 10.5012/bkcs.2014.35.10.3059] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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27
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Qiu JK, Hao WJ, Wang DC, Wei P, Sun J, Jiang B, Tu SJ. Selective sulfonylation and diazotization of indoles. Chem Commun (Camb) 2014; 50:14782-5. [DOI: 10.1039/c4cc06795a] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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28
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Salahi S, Maghsoodlou MT, Hazeri N, Movahedifar F, Doostmohammadi R, Lashkari M. Acidic ionic liquid N-methyl 2-pyrrolidonium hydrogen sulfate as an efficient catalyst for the one-pot multicomponent preparation of 3,4,5-substituted furan-2(5H)-ones. RESEARCH ON CHEMICAL INTERMEDIATES 2014. [DOI: 10.1007/s11164-014-1754-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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29
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Boukouvalas J, Jean MA. Streamlined biomimetic synthesis of paracaseolide A via aerobic oxidation of a 2-silyloxyfuran. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.05.054] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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30
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Xue F, Peng P, Shi J, Zhong M, Wang Z. Synthesis of 4-Diarylamino-3-iodo-2(5H)-furanones via the Simultaneous α-Iodination and N β -Arylation by an Efficient Difunctionalizable Transfer Reagent PhI(OAc)2. SYNTHETIC COMMUN 2014. [DOI: 10.1080/00397911.2013.879899] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Fuling Xue
- a School of Chemistry and Environment, South China Normal University, Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education , Guangzhou , China
| | - Pai Peng
- a School of Chemistry and Environment, South China Normal University, Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education , Guangzhou , China
| | - Jie Shi
- a School of Chemistry and Environment, South China Normal University, Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education , Guangzhou , China
| | - Mingli Zhong
- a School of Chemistry and Environment, South China Normal University, Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education , Guangzhou , China
| | - Zhaoyang Wang
- a School of Chemistry and Environment, South China Normal University, Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education , Guangzhou , China
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31
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Preparation of 3,4,5-substituted furan-2(5H)-ones using aluminum hydrogen sulfate as an efficient catalyst. CR CHIM 2014. [DOI: 10.1016/j.crci.2013.06.009] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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32
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Xie M, Zhang J, Ning P, Zhang Z, Liu X, Wang L. Regio- and stereoselective synthesis of highly functionalized vinyl ethers via coiodination of acetylenic ketones. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2013.12.084] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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34
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Li X, Shi X, Fang M, Xu X. Iron Halide-Mediated Regio- and Stereoselective Halosulfonylation of Terminal Alkynes with Sulfonylhydrazides: Synthesis of (E)-β-Chloro and Bromo Vinylsulfones. J Org Chem 2013; 78:9499-504. [DOI: 10.1021/jo401581n] [Citation(s) in RCA: 114] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Xiaoqing Li
- College
of Chemical Engineering and Materials Science, Zhejiang University of Technology, Hangzhou 310014, People’s Republic of China
| | - Xinhua Shi
- College
of Chemical Engineering and Materials Science, Zhejiang University of Technology, Hangzhou 310014, People’s Republic of China
| | - Mingwu Fang
- College
of Chemical Engineering and Materials Science, Zhejiang University of Technology, Hangzhou 310014, People’s Republic of China
| | - Xiangsheng Xu
- College
of Chemical Engineering and Materials Science, Zhejiang University of Technology, Hangzhou 310014, People’s Republic of China
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35
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Reddy MS, Thirupathi N, Hari Babu M, Puri S. Synthesis of Substituted 3-Iodocoumarins and 3-Iodobutenolides via Electrophilic Iodocyclization of Ethoxyalkyne Diols. J Org Chem 2013; 78:5878-88. [DOI: 10.1021/jo400499r] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Maddi Sridhar Reddy
- Medicinal & Process Chemistry Division, CSIR-Central Drug Research Institute, Chattar Manzil Palace, Lucknow-226 001, U.P., India
| | - Nuligonda Thirupathi
- Medicinal & Process Chemistry Division, CSIR-Central Drug Research Institute, Chattar Manzil Palace, Lucknow-226 001, U.P., India
| | - Madala Hari Babu
- Medicinal & Process Chemistry Division, CSIR-Central Drug Research Institute, Chattar Manzil Palace, Lucknow-226 001, U.P., India
| | - Surendra Puri
- Medicinal & Process Chemistry Division, CSIR-Central Drug Research Institute, Chattar Manzil Palace, Lucknow-226 001, U.P., India
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36
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An expedient synthesis of 3-arylmethylbutenolides from α-methylene-γ-butyrolactones: a useful synthetic application of palladium-catalyzed chelation-controlled oxidative arylation protocol. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2012.11.040] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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37
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Acetic acid as an efficient catalyst for the one-pot preparation of 3,4,5-substituted furan-2(5H)-ones. RESEARCH ON CHEMICAL INTERMEDIATES 2012. [DOI: 10.1007/s11164-012-0922-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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38
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Boukouvalas J, Albert V, Loach RP, Lafleur-Lambert R. Unified route to asymmetrically substituted butenolide, maleic anhydride, and maleimide constituents of Antrodia camphorata. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.09.064] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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39
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Munoz A, Murelli RP. Acid-mediated coupling of γ-hydroxybutenolides and aldehydes: Synthesis of a new class of spirocyclic ketal-lactones. Tetrahedron Lett 2012; 53:6779-6781. [PMID: 23335822 DOI: 10.1016/j.tetlet.2012.09.139] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In the presence of trimethylsilyl trifluoromethanesulfonate (TMSOTf), γ-methyl-γ-hydroxybutenolide reacts with aromatic aldehydes to generate a new class of stereochemically rich spirocyclic ketal-lactones in good yields and with excellent stereoselectivities. We believe that this process takes place through the in situ generation of protoanemonin followed by a Prins reaction. Herein, we describe this discovery, along with substrate scope and preliminary mechanistic studies.
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Affiliation(s)
- Alberto Munoz
- Department of Chemistry, Brooklyn College, The City University of New York, 2900 Bedford Avenue, Brooklyn, NY 11210
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40
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Durchschein K, Wallner S, Macheroux P, Zangger K, Fabian WMF, Faber K. Unusual C=C bond isomerization of an α,β-unsaturated γ-butyrolactone catalysed by flavoproteins from the old yellow enzyme family. Chembiochem 2012; 13:2346-51. [PMID: 23024004 PMCID: PMC3533789 DOI: 10.1002/cbic.201200475] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2012] [Indexed: 12/02/2022]
Abstract
An unexpected, redox-neutral C=C bond isomerization of a γ-butyrolactone bearing an exo-methylene unit to the thermodynamically more favoured endo isomer (kcat = 0.076 s−1) catalysed by flavoproteins from the Old Yellow Enzyme family was discovered. Theoretical calculations and kinetic data support a mechanism through which the isomerization proceeds through FMN-mediated hydride addition onto exo-Cβ, followed by hydride abstraction from endo-Cβ′, which is in line with the well-established C=C bond bioreduction of OYEs. This new isomerase activity enriches the catalytic versatility of ene-reductases.
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Affiliation(s)
- Katharina Durchschein
- Organic & Bioorganic Chemistry, Department of Chemistry, University of Graz, Heinrichstrasse 28, 8010 Graz, Austria
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41
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Chen W, Hartwig JF. Iridium-catalyzed regioselective and enantioselective allylation of trimethylsiloxyfuran. J Am Chem Soc 2012; 134:15249-52. [PMID: 22954355 DOI: 10.1021/ja306850b] [Citation(s) in RCA: 98] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report the regio- and enantioselective allylation of an ester enolate, trimethylsiloxyfuran. This enolate reacts at the 3-position with linear aromatic allylic carbonates or aliphatic allylic benzoates to form the branched substitution products in the presence of a metallacyclic iridium catalyst. This process provides access to synthetically important 3-substituted butenolides in enantioenriched form. Stoichiometric reactions of the allyliridium intermediate suggest that the trimethylsiloxyfuran is activated by the carboxylate leaving group.
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Affiliation(s)
- Wenyong Chen
- Department of Chemistry, University of California, Berkeley, California 94720, USA
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42
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Boukouvalas J, Albert V. Regiospecific synthesis of cepanolide, a cancer chemoprotective micronutrient found in green onions. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.04.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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43
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Conway B, Crosbie E, Kennedy AR, Mulvey RE, Robertson SD. Regioselective heterohalogenation of 4-halo-anisoles via a series of sequential ortho-aluminations and electrophilic halogenations. Chem Commun (Camb) 2012; 48:4674-6. [DOI: 10.1039/c2cc30795b] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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44
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45
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Facile synthesis of γ-alkenylbutenolides from Baylis–Hillman adducts: consecutive in-mediated Barbier allylation, PCC oxidation, isomerization, and Zn-mediated Barbier allylation. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.09.125] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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46
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Rocha J, Peixe L, Gomes NC, Calado R. Cnidarians as a source of new marine bioactive compounds--an overview of the last decade and future steps for bioprospecting. Mar Drugs 2011; 9:1860-1886. [PMID: 22073000 PMCID: PMC3210609 DOI: 10.3390/md9101860] [Citation(s) in RCA: 140] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2011] [Revised: 09/20/2011] [Accepted: 09/21/2011] [Indexed: 12/14/2022] Open
Abstract
Marine invertebrates are rich sources of bioactive compounds and their biotechnological potential attracts scientific and economic interest worldwide. Although sponges are the foremost providers of marine bioactive compounds, cnidarians are also being studied with promising results. This diverse group of marine invertebrates includes over 11,000 species, 7500 of them belonging to the class Anthozoa. We present an overview of some of the most promising marine bioactive compounds from a therapeutic point of view isolated from cnidarians in the first decade of the 21st century. Anthozoan orders Alcyonacea and Gorgonacea exhibit by far the highest number of species yielding promising compounds. Antitumor activity has been the major area of interest in the screening of cnidarian compounds, the most promising ones being terpenoids (monoterpenoids, diterpenoids, sesquiterpenoids). We also discuss the future of bioprospecting for new marine bioactive compounds produced by cnidarians.
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Affiliation(s)
- Joana Rocha
- Instituto de Ciencias Biomedicas Abel Salazar, Universidade do Porto, Largo Professor Abel Salazar no. 2, 4099-003 Porto, Portugal
- Departmento de Biologia & CESAM, Universidade de Aveiro, Campus Universitario de Santiago, 3810-193 Aveiro, Portugal; E-Mail:
| | - Luisa Peixe
- REQUIMTE, Laboratorio de Microbiologia, Faculdade de Farmacia, Universidade do Porto, Rua Anibal Cunha no. 164, 4050-047 Porto, Portugal; E-Mail:
| | - Newton C.M. Gomes
- Departmento de Biologia & CESAM, Universidade de Aveiro, Campus Universitario de Santiago, 3810-193 Aveiro, Portugal; E-Mail:
| | - Ricardo Calado
- Departmento de Biologia & CESAM, Universidade de Aveiro, Campus Universitario de Santiago, 3810-193 Aveiro, Portugal; E-Mail:
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47
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Oxidative rearrangement of 2-furylcarbamates with dimethyldioxirane: a high-yielding preparation of 5-hydroxypyrrol-2(5H)-ones. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.07.084] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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48
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Chen XL, Liu HL, Li J, Xin GR, Guo YW. Paracaseolide A, First α-Alkylbutenolide Dimer with an Unusual Tetraquinane Oxa-Cage Bislactone Skeleton from Chinese Mangrove Sonneratia paracaseolaris. Org Lett 2011; 13:5032-5. [PMID: 21875121 DOI: 10.1021/ol201809q] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xue-Lian Chen
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Zu Chong Zhi Road, 555, Shanghai 201203, China, and Institute of Biological Science, Sun Yat-Sen University, Xin Gang West Road 135, Guangzhou 510275, China
| | - Hai-Li Liu
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Zu Chong Zhi Road, 555, Shanghai 201203, China, and Institute of Biological Science, Sun Yat-Sen University, Xin Gang West Road 135, Guangzhou 510275, China
| | - Jia Li
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Zu Chong Zhi Road, 555, Shanghai 201203, China, and Institute of Biological Science, Sun Yat-Sen University, Xin Gang West Road 135, Guangzhou 510275, China
| | - Guo-Rong Xin
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Zu Chong Zhi Road, 555, Shanghai 201203, China, and Institute of Biological Science, Sun Yat-Sen University, Xin Gang West Road 135, Guangzhou 510275, China
| | - Yue-Wei Guo
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Zu Chong Zhi Road, 555, Shanghai 201203, China, and Institute of Biological Science, Sun Yat-Sen University, Xin Gang West Road 135, Guangzhou 510275, China
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Sun H, Huang H, Zhang D, Feng E, Qian W, Zhang L, Chen K, Liu H. Synthesis of 4-Aryl-2(5H)-furanones by Gold(I)-Catalyzed Intramolecular Annulation. Adv Synth Catal 2011. [DOI: 10.1002/adsc.201100069] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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50
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