1
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Franc M, Schulz J, Štěpnička P. Facile synthesis and bonding of 4-ferrocenyl-1,2,4-triazol-5-ylidene complexes. Dalton Trans 2024; 53:11445-11453. [PMID: 38904982 DOI: 10.1039/d4dt01433b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/22/2024]
Abstract
Ferrocene-substituted carbenes have emerged as attractive, redox-active ligands. However, among the compounds studied to date, ferrocenylated 1,2,4-triazol-5-ylidenes, which are closely related to the archetypal imidazol-2-ylidenes, are still unknown. Here, we demonstrate that the triazolium salt [CHN(Me)NCHN(Fc)]I (2; Fc = ferrocenyl), obtained by alkylation of 4-ferrocenyl-4H-1,2,4-triazole (1) with MeI, reacts selectively with metal alkoxide/hydroxide precursors [(cod)Rh(OMe)]2 and [(IPr)Au(OH)] (cod = cycloocta-1,5-diene, IPr = 1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene) to produce the ferrocene-substituted 1,2,4-triazol-5-ylidene complexes [(cod)RhI{CN(Me)NCHN(Fc)}] and [(IPr)Au{CN(Me)NCHN(Fc)}]I in good yields. The complexes were characterised by NMR and IR spectroscopy, mass spectrometry, cyclic voltammetry, and single-crystal X-ray diffraction analysis. Density function theory (DFT) calculations were used to rationalise the electrochemical behaviour of the carbene complexes and to elucidate the bonding situation in these compounds. An analysis using intrinsic bond orbitals (IBOs) revealed that the 1,2,4-triazol-5-ylidene ligand exerted a strong trans influence and showed a synergistic stabilisation by the negative inductive and positive π-donor effects of the nitrogen atoms adjacent to the carbene carbon atom; these effects were enhanced by conjugation with the CHN bond at the exterior, similar to that in imidazol-2-ylidenes.
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Affiliation(s)
- Michal Franc
- Department of Inorganic Chemistry, Faculty of Science, Charles University, Hlavova 2030, 128 40 Prague, Czech Republic.
| | - Jiří Schulz
- Department of Inorganic Chemistry, Faculty of Science, Charles University, Hlavova 2030, 128 40 Prague, Czech Republic.
| | - Petr Štěpnička
- Department of Inorganic Chemistry, Faculty of Science, Charles University, Hlavova 2030, 128 40 Prague, Czech Republic.
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2
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Yamamoto Y, Tadano R, Yasui T. Enantioselective Desymmetrization of Trifluoromethylated Tertiary Benzhydrols via Hydrogen-Acceptor-Free Ir-Catalyzed Dehydrogenative C-H Silylation: Decisive Role of the Trifluoromethyl Group. JACS AU 2024; 4:807-815. [PMID: 38425931 PMCID: PMC10900501 DOI: 10.1021/jacsau.3c00794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 01/29/2024] [Accepted: 01/30/2024] [Indexed: 03/02/2024]
Abstract
Although the trifluoromethyl (CF3) group is one of the most important fluorinated groups owing to its significant ability to modulate pharmacological properties, constructing trifluoromethylated stereogenic centers in an enantioselective manner has been a formidable challenge. Herein, we report the development of the enantioselective desymmetrization of trifluoromethylated benzhydrols via intramolecular dehydrogenative silylation using Ir catalysts with chiral pyridine-oxazoline (PyOX) ligands. The produced benzoxasilol was transformed into several unsymmetrical benzhydrols via iododesilylation and subsequent transition-metal-catalyzed cross-coupling reactions. Moreover, the same Ir catalyst system was used for the kinetic resolution of unsymmetrical trifluoromethylated benzhydrols.
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Affiliation(s)
- Yoshihiko Yamamoto
- Department of Basic Medicinal
Sciences, Graduate School of Pharmaceutical Sciences, Nagoya University, Chikusa, Nagoya 464-8601, Japan
| | - Ryu Tadano
- Department of Basic Medicinal
Sciences, Graduate School of Pharmaceutical Sciences, Nagoya University, Chikusa, Nagoya 464-8601, Japan
| | - Takeshi Yasui
- Department of Basic Medicinal
Sciences, Graduate School of Pharmaceutical Sciences, Nagoya University, Chikusa, Nagoya 464-8601, Japan
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3
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Synthesis and characterization of novel PEPPSI type bicyclic (alkyl)(amino)carbene (BICAAC)-Pd complexes. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.132483] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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4
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Uredi D, Burra AG, Watkins EB. Rapid Access to 3-Substituted Pyridines and Carbolines via a Domino, Copper-free, Palladium-Catalyzed Sonogashira Cross-Coupling/6π-Aza Cyclization Sequence. J Org Chem 2021; 86:17748-17761. [PMID: 34846892 DOI: 10.1021/acs.joc.1c02034] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Herein, we report a one-pot, three-component method for the preparation of 3-substituted pyridines and carbolines via copper-free, palladium-catalyzed Sonogashira cross-coupling with aryl iodides, followed by 6π-aza cyclization. This arylation cross-coupling/annulation cascade provides easy access to substituted, fused pyridines from readily available substrates in good yields (67-92%) with complete selectivity.
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Affiliation(s)
- Dilipkumar Uredi
- Department of Pharmaceutical Sciences, Center for Pharmacometrics and Molecular Discovery, College of Pharmacy, Union University, Jackson 38305, Tennessee, United States
| | - Amarender Goud Burra
- Department of Pharmaceutical Sciences, Center for Pharmacometrics and Molecular Discovery, College of Pharmacy, Union University, Jackson 38305, Tennessee, United States
| | - E Blake Watkins
- Department of Pharmaceutical Sciences, Center for Pharmacometrics and Molecular Discovery, College of Pharmacy, Union University, Jackson 38305, Tennessee, United States
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5
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Poyatos M, Peris E. Insights into the past and future of Janus-di-N-heterocyclic carbenes. Dalton Trans 2021; 50:12748-12763. [PMID: 34581341 DOI: 10.1039/d1dt02035h] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Janus di-N-heterocyclic carbene (NHC) ligands are a subclass of poly-NHCs that feature coordination to two transition metals in a facially opposed manner. The combination of the structural features of Janus type ligands, with the properties conferred by the NHC ligands, has conferred Janus-di-NHCs with privileged attributes for their use in diverse areas of research, such as homogeneous catalysis, materials chemistry and supramolecular chemistry. In molecular chemistry, Janus di-NHCs constitute one of the most useful chemical platforms for constructing dimetallic structures, and this includes both homo- and hetero-dimetallic compounds. This review aims to cover the most relevant advances in the use of Janus-di-NHCs during the last 15 years, by classifying them according to their specific structural features.
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Affiliation(s)
- Macarena Poyatos
- Institute of Advanced Materials (INAM), Universitat Jaume I, Av. Vicente Sos Baynat s/n, Castellón, E-1271, Spain.
| | - Eduardo Peris
- Institute of Advanced Materials (INAM), Universitat Jaume I, Av. Vicente Sos Baynat s/n, Castellón, E-1271, Spain.
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6
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Palladium Nanoparticles Supported on Smopex-234® as Valuable Catalysts for the Synthesis of Heterocycles. Catalysts 2021. [DOI: 10.3390/catal11060706] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Supported catalysts are important tools for developing green-economy-based processes. Palladium nanoparticles (NPs) that are immobilized on two fibers developed as metal scavengers (i.e., Smopex®-234 and Smopex®-111, 1% w/w) have been prepared and tested in copper-free cyclocarbonylative Sonogashira reactions. Their catalytic activity has been compared with that of a homogeneous catalyst (i.e., PdCl2(PPh3)2). Pd/Smopex®-234 showed high activity and selectivity in the synthesis of functionalized heterocycles, such as phthalans and isochromans, even when working with a very low amount of palladium (0.2–0.5 mol%). The extension of Pd/Smopex®-234 promoted cyclocarbonylative reactions to propargyl and homopropargyl amides afforded the corresponding isoindoline and dihydrobenzazepine derivatives. A preliminary test on Pd NPs leaching into the solution (1.7 × 10−3 mg) seems to indicate that, at the end of the reaction, almost all of the active metal is present on the fiber surface.
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7
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8
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Liu Q, Zhang X, Zhao Z, Li X, Zhang W. Synthesis of
N
‐Heterocyclic
Carbine Silver(I) and Palladium(
II
) Complexes with Acylated Piperazine Linker and Catalytic Activity in Three Types of C—C Coupling Reactions. CHINESE J CHEM 2021. [DOI: 10.1002/cjoc.202000237] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Qingxiang Liu
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University Tianjin 300387 China
| | - Xiantao Zhang
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University Tianjin 300387 China
| | - Zhixiang Zhao
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University Tianjin 300387 China
| | - Xinying Li
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University Tianjin 300387 China
| | - Wei Zhang
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University Tianjin 300387 China
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9
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Glushkov VA, Babentzev DN, Dmitriev MV, Borisova IA, Denisov MS. Quaternary 2-R-5,6-dihydro-1,2,4-triazolo[3,4-a]isoquinolin-2-ium salts and PEPPSI complexes based thereof. Russ Chem Bull 2021. [DOI: 10.1007/s11172-021-3065-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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10
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Sevim M, Kavukcu SB, Kınal A, Şahin O, Türkmen H. C-C coupling formation using nitron complexes. Dalton Trans 2020; 49:16903-16915. [PMID: 33185233 DOI: 10.1039/d0dt02937h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
A series of RuII (1), RhIII (2), IrIII (3, 4), IrI (5) and PdII (6-9) complexes of the 'instant carbene' nitron were prepared and characterized by 1H- and 13C-NMR, FT-IR and elemental analysis. The molecular structures of complexes 1-4 and 6 were determined by X-ray diffraction studies. The catalytic activity of the complexes (1-9) was evaluated in alpha(α)-alkylation reactions of ketones with alcohol via the borrowing hydrogen strategy under mild conditions. These complexes were able to perform this catalytic transformation in a short time with low catalyst and base amounts under an air atmosphere. Also, the PdII-nitron complexes (6-9) were applied in the Suzuki-Miyaura C-C coupling reaction and these complexes successfully initiated this reaction in a short time (30 minutes) using the H2O/2-propanol (1.5 : 0.5) solvent system. The DFT calculations revealed that the Pd0/II/0 pathway was more preferable for the mechanism.
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Affiliation(s)
- Mehmet Sevim
- Department of Chemistry, Ege University, 35100 Bornova, Izmir, Turkey.
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11
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Metal-ligand bond dissociation energies in the Ni, Pd, and Pt complexes with N-heterocyclic carbenes: effect of the oxidation state of the metal (0, +2). Russ Chem Bull 2020. [DOI: 10.1007/s11172-020-3002-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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12
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Yadav S, Dash C. One-pot Tandem Heck alkynylation/cyclization reactions catalyzed by Bis(Pyrrolyl)pyridine based palladium pincer complexes. Tetrahedron 2020. [DOI: 10.1016/j.tet.2020.131350] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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13
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Feng C, Liu CX, Wang YF, Cui J, Zhang MJ. Synthesis and characterization of a new bis-NHC palladium complex and its catalytic activity in the Mizoroki–Heck reaction. JOURNAL OF CHEMICAL RESEARCH 2020. [DOI: 10.1177/1747519820917883] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A new bis- N-heterocyclic carbene palladium complex, (C13H9N2F2)2PdCl2, is synthesized by a three-step reaction and characterized by 1H NMR and 13C NMR spectroscopy as well as by X-ray crystallography. This new bis- N-heterocyclic carbene palladium complex has excellent stability and is capable of efficiently catalyzing the Mizoroki–Heck coupling reaction of aryl halides with acrylates.
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Affiliation(s)
- Can Feng
- Department of Chemistry, School of Sciences, Tianjin University, Tianjin, P.R. China
| | - Cheng-xin Liu
- Department of Chemistry, School of Sciences, Tianjin University, Tianjin, P.R. China
| | - Yu-fang Wang
- Scientific Research Department, Shijiazhuang University of Applied Technology, Shijiazhuang, P.R. China
| | - Jin Cui
- National Foodstuff Inspection Center, Tianjin Product Quality Inspection Technology Research Institute, Tianjin, P.R. China
| | - Ming-jie Zhang
- Department of Chemistry, School of Sciences, Tianjin University, Tianjin, P.R. China
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14
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Tyagi A, Reshi NUD, Daw P, Bera JK. Palladium complexes with an annellated mesoionic carbene (MIC) ligand: catalytic sequential Sonogashira coupling/cyclization reaction for one-pot synthesis of benzofuran, indole, isocoumarin and isoquinolone derivatives. Dalton Trans 2020; 49:15238-15248. [DOI: 10.1039/d0dt02918a] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A Pd(ii) complex containing a mesoionic carbene and phosphine ligands is an efficient catalyst for tandem coupling/cyclization reaction.
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Affiliation(s)
- Akshi Tyagi
- Department of Chemistry and Centre for Environmental Sciences and Engineering
- Indian Institute of Technology Kanpur
- Kanpur 208016
- India
| | - Noor U Din Reshi
- Department of Chemistry and Centre for Environmental Sciences and Engineering
- Indian Institute of Technology Kanpur
- Kanpur 208016
- India
| | - Prosenjit Daw
- Department of Chemistry and Centre for Environmental Sciences and Engineering
- Indian Institute of Technology Kanpur
- Kanpur 208016
- India
| | - Jitendra K. Bera
- Department of Chemistry and Centre for Environmental Sciences and Engineering
- Indian Institute of Technology Kanpur
- Kanpur 208016
- India
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15
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Applications of metal and non-metal catalysts for the synthesis of oxygen containing five-membered polyheterocylces: a mini review. SN APPLIED SCIENCES 2019. [DOI: 10.1007/s42452-019-1007-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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16
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Yadav S, Singh A, Mishra I, Ray S, Mobin SM, Dash C. Well‐Defined N‐Heterocyclic Carbene‐Palladium Complexes as Efficient Catalysts for Domino Sonogashira Coupling/Cyclization Reaction and C‐H bond Arylation of Benzothiazole. Appl Organomet Chem 2019. [DOI: 10.1002/aoc.4936] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Seema Yadav
- Department of Chemistry, School of Chemical Sciences and PharmacyCentral University of Rajasthan Bandarsindri India
| | - Ajeet Singh
- Department of ChemistryIndian Institute of Technology (IIT) Indore Simrol, Khandwa Road Indore 453552 India
| | - Isha Mishra
- Department of Chemistry, School of Chemical Sciences and PharmacyCentral University of Rajasthan Bandarsindri India
| | - Sriparna Ray
- Department of Chemistry, School of Basic SciencesManipal University Jaipur Jaipur Rajasthan 303007 India
| | - Shaikh M. Mobin
- Department of ChemistryIndian Institute of Technology (IIT) Indore Simrol, Khandwa Road Indore 453552 India
| | - Chandrakanta Dash
- Department of Chemistry, School of Chemical Sciences and PharmacyCentral University of Rajasthan Bandarsindri India
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17
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Hu Z, Ma X, Wang J, Wang H, Han X, Shi M, Zhang J. Six-Membered Janus-type Ditopic N-Heterocyclic Carbene Coinage Metal Complexes. Organometallics 2019. [DOI: 10.1021/acs.organomet.9b00124] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Zejun Hu
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science and Technology, 130 Mei Long Road, Shanghai 200237, China
| | - Xufeng Ma
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science and Technology, 130 Mei Long Road, Shanghai 200237, China
| | - Jiwei Wang
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science and Technology, 130 Mei Long Road, Shanghai 200237, China
| | - Han Wang
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science and Technology, 130 Mei Long Road, Shanghai 200237, China
| | - Xiaoyan Han
- Testing and Analysis Center, Soochow University, Suzhou 215123, China
| | - Min Shi
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science and Technology, 130 Mei Long Road, Shanghai 200237, China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 354 Fenglin Road, Shanghai 200032, China
| | - Jun Zhang
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science and Technology, 130 Mei Long Road, Shanghai 200237, China
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18
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Onar G, Gürses C, Karataş MO, Balcıoğlu S, Akbay N, Özdemir N, Ateş B, Alıcı B. Palladium(II) and ruthenium(II) complexes of benzotriazole functionalized N-heterocyclic carbenes: Cytotoxicity, antimicrobial, and DNA interaction studies. J Organomet Chem 2019. [DOI: 10.1016/j.jorganchem.2019.02.013] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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19
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Kumbhar A. Functionalized nitrogen ligands (C N) for palladium catalyzed cross-coupling reactions (part II). J Organomet Chem 2019. [DOI: 10.1016/j.jorganchem.2018.09.020] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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20
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Singh C, Prakasham AP, Gangwar MK, Ghosh P. Binuclear Fused 5-membered Palladacycle and Palladium Complex of Amido-Functionalized N-heterocyclic Carbene Precatalysts for the One-Pot Tandem Hiyama Alkynylation/Cyclization Reactions. ChemistrySelect 2018. [DOI: 10.1002/slct.201801667] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Chandan Singh
- Department of Chemistry; Indian Institute of Technology Bombay, Powai; Mumbai 400 076
| | - A. P. Prakasham
- Department of Chemistry; Indian Institute of Technology Bombay, Powai; Mumbai 400 076
| | - Manoj Kumar Gangwar
- Department of Chemistry; Indian Institute of Technology Bombay, Powai; Mumbai 400 076
| | - Prasenjit Ghosh
- Department of Chemistry; Indian Institute of Technology Bombay, Powai; Mumbai 400 076
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21
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Cao J, Chen ZL, Li SM, Zhu GF, Yang YY, Wang C, Chen WZ, Wang JT, Zhang JQ, Tang L. Palladium-Catalyzed Regioselective C-2 Arylation of Benzofurans with N′
-Acyl Arylhydrazines. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800374] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Jun Cao
- State Key Laboratory of Functions and Applications of Medicinal Plants; Guizhou Medical University; 550014 Guiyang P.R. China
- College of Pharmacy; Guizhou Medical University; 550025 Guiyang P.R. China
| | - Zi-Li Chen
- Affiliated Hospital of Guizhou Medical University; 550004 Guiyang P.R. China
| | - Shu-Min Li
- College of Pharmacy; Guizhou Medical University; 550025 Guiyang P.R. China
| | - Gao-Feng Zhu
- College of Pharmacy; Guizhou Medical University; 550025 Guiyang P.R. China
| | - Yuan-Yong Yang
- College of Pharmacy; Guizhou Medical University; 550025 Guiyang P.R. China
| | - Cong Wang
- College of Pharmacy; Guizhou Medical University; 550025 Guiyang P.R. China
| | - Wen-Zhang Chen
- Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D; Guizhou Medical University; 550004 Guiyang P.R. China
| | - Jian-Ta Wang
- College of Pharmacy; Guizhou Medical University; 550025 Guiyang P.R. China
| | - Ji-Quan Zhang
- State Key Laboratory of Functions and Applications of Medicinal Plants; Guizhou Medical University; 550014 Guiyang P.R. China
- College of Pharmacy; Guizhou Medical University; 550025 Guiyang P.R. China
- Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D; Guizhou Medical University; 550004 Guiyang P.R. China
| | - Lei Tang
- State Key Laboratory of Functions and Applications of Medicinal Plants; Guizhou Medical University; 550014 Guiyang P.R. China
- Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D; Guizhou Medical University; 550004 Guiyang P.R. China
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22
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Chernenko AY, Astakhov AV, Pasyukov DV, Dorovatovskii PV, Zubavichus YV, Khrustalev VN, Chernyshev VM. Pd-PEPPSI complexes based on 1,2,4-triazol-3-ylidene ligands as efficient catalysts in the Suzuki—Miyaura reaction. Russ Chem Bull 2018. [DOI: 10.1007/s11172-018-2040-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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23
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[(PhCH2O)2P(CH3)2CHNCH(CH3)2]2PdCl2/CuI as Cocatalyst for Coupling-Cyclization of 2-Iodophenol with Terminal Alkynes in Water. Catalysts 2018. [DOI: 10.3390/catal8040136] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
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24
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Singh C, Prakasham AP, Gangwar MK, Butcher RJ, Ghosh P. One-Pot Tandem Hiyama Alkynylation/Cyclizations by Palladium(II) Acyclic Diaminocarbene (ADC) Complexes Yielding Biologically Relevant Benzofuran Scaffolds. ACS OMEGA 2018; 3:1740-1756. [PMID: 31458491 PMCID: PMC6641338 DOI: 10.1021/acsomega.7b01974] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Accepted: 01/23/2018] [Indexed: 06/10/2023]
Abstract
A series of palladium acyclic diaminocarbene (ADC) complexes of the type cis-[(R1NH)(R2)methylidene]PdCl2(CNR1) [R1 = 2,4,6-(CH3)3C6H2: R2 = NC5H10 (2); NC4H8 (3); NC4H8O (4)] were used not only to perform the Csp2 -Csp Hiyama coupling between aryl iodide and triethoxysilylalkynes but also to subsequently carry out the one-pot tandem Hiyama alkynylation/cyclization reaction between 2-iodophenol and triethoxysilylalkynes, giving a convenient time-efficient access to the biologically relevant benzofuran compounds. The palladium ADC complexes (2-4) were conveniently synthesized by the nucleophilic addition of secondary amines, namely, piperidine, pyrrolidine, and morpholine on the cis-{(2,4,6-(CH3)3C6H2)NC}2PdCl2 in moderate yields (ca. 61-66%).
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Affiliation(s)
- Chandan Singh
- Department
of Chemistry, Indian Institute of Technology
Bombay, Powai, Mumbai 400 076, India
| | - A. P. Prakasham
- Department
of Chemistry, Indian Institute of Technology
Bombay, Powai, Mumbai 400 076, India
| | - Manoj Kumar Gangwar
- Department
of Chemistry, Indian Institute of Technology
Bombay, Powai, Mumbai 400 076, India
| | - Raymond J. Butcher
- Department
of Chemistry, Howard University, Washington DC 20059, United States
| | - Prasenjit Ghosh
- Department
of Chemistry, Indian Institute of Technology
Bombay, Powai, Mumbai 400 076, India
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25
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Zhang L, Han YF. A macrocyclic silver polycarbene complex based on 1,2,4-triazole units: synthesis and postsynthetic modification. Dalton Trans 2018; 47:4267-4272. [DOI: 10.1039/c8dt00169c] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
A method for the synthesis of a new rectangular 1,2,4-triazole-containing macrocycle via photochemical [2 + 2] cycloaddition with a metal–carbene template was developed.
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Affiliation(s)
- Le Zhang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education
- College of Chemistry and Materials Science
- FM & EM International Joint Laboratory
- Northwest University
- Xi'an 710127
| | - Ying-Feng Han
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education
- College of Chemistry and Materials Science
- FM & EM International Joint Laboratory
- Northwest University
- Xi'an 710127
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26
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Mandali PK, Pati AK, Mishra AK, Chand DK. Fluorescent 1-Arylidene-1,3-dihydroisobenzofuran: Ligand-Free Palladium Nanoparticles, Catalyzed Domino Synthesis and Photophysical Studies. ChemistrySelect 2017. [DOI: 10.1002/slct.201700730] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Pavan Kumar Mandali
- Department of Chemistry; Indian Institute of Technology Madras; Chennai - 600036, Tamilnadu India
| | - Avik Kumar Pati
- Department of Chemistry; Indian Institute of Technology Madras; Chennai - 600036, Tamilnadu India
| | - Ashok Kumar Mishra
- Department of Chemistry; Indian Institute of Technology Madras; Chennai - 600036, Tamilnadu India
| | - Dillip Kumar Chand
- Department of Chemistry; Indian Institute of Technology Madras; Chennai - 600036, Tamilnadu India
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27
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Nguyen VH, Ibrahim MB, Mansour WW, El Ali BM, Huynh HV. Postmodification Approach to Charge-Tagged 1,2,4-Triazole-Derived NHC Palladium(II) Complexes and Their Applications. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00329] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Van Ha Nguyen
- Department
of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Republic of Singapore
| | - Mansur B. Ibrahim
- Chemistry Department, King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia
| | - Waseem W. Mansour
- Chemistry Department, King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia
| | - Bassam M. El Ali
- Chemistry Department, King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia
| | - Han Vinh Huynh
- Department
of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Republic of Singapore
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Abstract
It is well-recognized that N-heterocyclic carbene (NHC) ligands have provided a new dimension to the design of homogeneous catalysts. Part of the success of this type of ligands resides in the limitless access to a variety of topologies with tuned electronic properties, but also in the ability of a family of NHCs that are able to adapt their properties to the specific requirements of individual catalytic transformations. The term "smart" is used here to refer to switchable, multifunctional, adaptable, or tunable ligands and, in general, to all those ligands that are able to modify their steric or electronic properties to fulfill the requirements of a defined catalytic reaction. The purpose of this review is to comprehensively describe all types of smart NHC ligands by focusing attention on the catalytically relevant ligand-based reactivity.
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Affiliation(s)
- Eduardo Peris
- Institute of Advanced Materials , Universitat Jaume I , Avenida Vicente Sos Baynat s/n , Castellón E-12071 , Spain
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29
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Synthesis of substituted benzofurans and indoles by Zn-catalyzed tandem Sonogashira-cyclization strategy. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2016.12.076] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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30
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Mondal M, Choudhury J. Structure–activity comparison in palladium–N–heterocyclic carbene (NHC) catalyzed arene C H activation- functionalization. ACTA ACUST UNITED AC 2017. [DOI: 10.1016/j.molcata.2016.06.027] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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31
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Pd-catalyzed coupling reaction of 6-hydroxy-2-(prop-2-yn-1-ylsulfanyl)pyrimidin-4(1H)-one with aryl iodides: efficient syntheses of new 3-benzylthiazolo[3,2-a]pyrimidinones. Chem Heterocycl Compd (N Y) 2016. [DOI: 10.1007/s10593-016-1974-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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32
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Deck E, Reiter K, Klopper W, Breher F. A Dinuclear Gold(I) Bis(Carbene) Complex Based on a Ditopic Cyclic (Aryl)(Amino)Carbene Framework. Z Anorg Allg Chem 2016. [DOI: 10.1002/zaac.201600346] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Eva Deck
- Institute of Inorganic Chemistry; Karlsruhe Institute of Technology (KIT); Engesserstr. 15 76131 Karlsruhe Germany
| | - Kevin Reiter
- Institute of Physical Chemistry; Karlsruhe Institute of Technology (KIT); Fritz-Haber-Weg 2 76131 Karlsruhe Germany
| | - Wim Klopper
- Institute of Physical Chemistry; Karlsruhe Institute of Technology (KIT); Fritz-Haber-Weg 2 76131 Karlsruhe Germany
| | - Frank Breher
- Institute of Inorganic Chemistry; Karlsruhe Institute of Technology (KIT); Engesserstr. 15 76131 Karlsruhe Germany
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33
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Liu M, Ye M, Xue Y, Yin G, Wang D, Huang J. Sonogashira coupling catalyzed by the Cu(Xantphos)I–Pd(OAc)2 system. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.06.014] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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34
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35
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delPozo J, Casares JA, Espinet P. In Situ Generation of ArCu from CuF2 Makes Coupling of Bulky Aryl Silanes Feasible and Highly Efficient. Chemistry 2016; 22:4274-84. [PMID: 26895353 DOI: 10.1002/chem.201504435] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2015] [Indexed: 11/11/2022]
Abstract
A bimetallic system of Pd/CuF2, catalytic in Pd and stoichiometric in Cu, is very efficient and selective for the coupling of fairly hindered aryl silanes with aryl, anisyl, phenylaldehyde, p-cyanophenyl, p-nitrophenyl, or pyridyl iodides of conventional size. The reaction involves the activation of the silane by Cu(II), followed by disproportionation and transmetalation from the Cu(I)(aryl) to Pd(II), upon which coupling takes place. Cu(III) formed during disproportionation is reduced to Cu(I)(aryl) by excess aryl silane, so that the CuF2 system is fully converted into Cu(I)(aryl) and used in the coupling. Moreover, no extra source of fluoride is needed. Interesting size selectivity towards coupling is found in competitive reactions of hindered aryl silanes. Easily accessible [PdCl2 (IDM)(AsPh3)] (IDM = 1,3-dimethylimidazol-2-ylidene) is by far the best catalyst, and the isolated products are essentially free from As or Pd (<1 ppm). The mechanistic aspects of the process have been experimentally examined and discussed.
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Affiliation(s)
- Juan delPozo
- IU CINQUIMA/Química Inorgánica, Facultad de Ciencias, Universidad de Valladolid, 47011, Valladolid, Spain
| | - Juan A Casares
- IU CINQUIMA/Química Inorgánica, Facultad de Ciencias, Universidad de Valladolid, 47011, Valladolid, Spain.
| | - Pablo Espinet
- IU CINQUIMA/Química Inorgánica, Facultad de Ciencias, Universidad de Valladolid, 47011, Valladolid, Spain.
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36
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Bosiak MJ. A Convenient Synthesis of 2-Arylbenzo[b]furans from Aryl Halides and 2-Halophenols by Catalytic One-Pot Cascade Method. ACS Catal 2016. [DOI: 10.1021/acscatal.6b00190] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Mariusz Jan Bosiak
- Department
of Organic Chemistry, Faculty of Chemistry, Nicolaus Copernicus University in Toruń, 7 Gagarin Street, 87-100 Toruń, Poland
- Synthex
Technologies
Sp. z o.o., 7/134B Gagarin Street, 87-100 Toruń, Poland
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37
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Kumar A, Gangwar MK, Prakasham AP, Mhatre D, Kalita AC, Ghosh P. Accessing a Biologically Relevant Benzofuran Skeleton by a One-Pot Tandem Heck Alkynylation/Cyclization Reaction Using Well-Defined Palladium N-Heterocyclic Carbene Complexes. Inorg Chem 2016; 55:2882-93. [DOI: 10.1021/acs.inorgchem.5b02727] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | | | | | | | | | - Prasenjit Ghosh
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400 076, India
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38
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Sequentially Palladium-Catalyzed Processes in One-Pot Syntheses of Heterocycles. APPLIED SCIENCES-BASEL 2015. [DOI: 10.3390/app5041803] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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39
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Chorley DF, Furkert DP, Brimble MA. Synthesis of the Spiroketal Core of the Pinnatifinoside Family of Natural Products. European J Org Chem 2015. [DOI: 10.1002/ejoc.201501225] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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40
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Martínez‐Olid F, Andrés R, Flores JC, Gómez‐Sal P. Trimetallic PEPPSI‐Type Palladium N‐Heterocyclic Carbene Complexes – Improved Catalyst Lifetime in the Mizoroki–Heck Coupling Reaction. Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201500542] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Francisco Martínez‐Olid
- Departamento de Química Orgánica y Química Inorgánica, Universidad de Alcalá, Campus Universitario, 28871 Alcalá de Henares, Madrid, Spain
| | - Román Andrés
- Departamento de Química Orgánica y Química Inorgánica, Universidad de Alcalá, Campus Universitario, 28871 Alcalá de Henares, Madrid, Spain
| | - Juan C. Flores
- Departamento de Química Orgánica y Química Inorgánica, Universidad de Alcalá, Campus Universitario, 28871 Alcalá de Henares, Madrid, Spain
| | - Pilar Gómez‐Sal
- Departamento de Química Orgánica y Química Inorgánica, Universidad de Alcalá, Campus Universitario, 28871 Alcalá de Henares, Madrid, Spain
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41
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Aronica LA, Giannotti L, Tuci G, Zinna F. Cyclocarbonylative Sonogashira Reactions of 1-Ethynylbenzyl Alcohols: Synthesis of 1-Carbonylmethylene-1,3-Dihydroisobenzofurans. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500539] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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42
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43
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Liu QX, Cai KQ, Zhao ZX. Synthesis, structure and catalysis of a NHC–Pd(ii) complex based on a tetradentate mixed ligand. RSC Adv 2015. [DOI: 10.1039/c5ra11089k] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
NHC–Pd(ii) complex 1 has been prepared. The catalytic activity of 1 in C–C coupling reactions was studied.
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Affiliation(s)
- Qing-Xiang Liu
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules
- Key Laboratory of Inorganic–Organic Hybrid Functional Material Chemistry
- Ministry of Education
- College of Chemistry
- Tianjin Normal University
| | - Kang-Qing Cai
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules
- Key Laboratory of Inorganic–Organic Hybrid Functional Material Chemistry
- Ministry of Education
- College of Chemistry
- Tianjin Normal University
| | - Zhi-Xiang Zhao
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules
- Key Laboratory of Inorganic–Organic Hybrid Functional Material Chemistry
- Ministry of Education
- College of Chemistry
- Tianjin Normal University
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44
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Denißen M, Nordmann J, Dziambor J, Mayer B, Frank W, Müller TJJ. Sequential palladium catalyzed coupling–cyclocondensation–coupling (C3) four-component synthesis of intensively blue luminescent biarylsubstituted pyrazoles. RSC Adv 2015. [DOI: 10.1039/c5ra03104d] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
Highly blue-fluorescent 1-, 3-, and 5-biarylsubstituted pyrazoles can be efficiently prepared by a MW-assisted consecutive four-component synthesis based upon a sequential Pd-catalyzed Sonogashira coupling–condensation–Suzuki coupling (C3) process.
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Affiliation(s)
- Melanie Denißen
- Institut für Organische Chemie und Makromolekulare Chemie
- Heinrich-Heine-Universität Düsseldorf
- 40225 Düsseldorf
- Germany
| | - Jan Nordmann
- Institut für Organische Chemie und Makromolekulare Chemie
- Heinrich-Heine-Universität Düsseldorf
- 40225 Düsseldorf
- Germany
| | - Julian Dziambor
- Institut für Organische Chemie und Makromolekulare Chemie
- Heinrich-Heine-Universität Düsseldorf
- 40225 Düsseldorf
- Germany
| | - Bernhard Mayer
- Institut für Organische Chemie und Makromolekulare Chemie
- Heinrich-Heine-Universität Düsseldorf
- 40225 Düsseldorf
- Germany
| | - Walter Frank
- Institut für Anorganische Chemie und Strukturchemie
- Heinrich-Heine-Universität Düsseldorf
- 40225 Düsseldorf
- Germany
| | - Thomas J. J. Müller
- Institut für Organische Chemie und Makromolekulare Chemie
- Heinrich-Heine-Universität Düsseldorf
- 40225 Düsseldorf
- Germany
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45
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Chahdoura F, Mallet-Ladeira S, Gómez M. Palladium nanoparticles in glycerol: a clear-cut catalyst for one-pot multi-step processes applied in the synthesis of heterocyclic compounds. Org Chem Front 2015. [DOI: 10.1039/c4qo00338a] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Palladium/TPPTS nanoparticles in glycerol represent a versatile catalyst leading to a large variety of heterocycles through domino/sequential one-pot approaches.
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Affiliation(s)
- Faouzi Chahdoura
- Université de Toulouse
- Laboratoire Hétérochimie Fondamentale et Appliquée (LHFA)
- UPS and CNRS UMR 5069
- 31062 Toulouse Cedex 9
- France
| | - Sonia Mallet-Ladeira
- Institut de Chimie de Toulouse
- FR 2599
- Université Paul Sabatier
- 31062 Toulouse Cedex 9
- France
| | - Montserrat Gómez
- Université de Toulouse
- Laboratoire Hétérochimie Fondamentale et Appliquée (LHFA)
- UPS and CNRS UMR 5069
- 31062 Toulouse Cedex 9
- France
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46
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Palladium-ADC complexes as efficient catalysts in copper-free and room temperature Sonogashira coupling. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.molcata.2014.08.018] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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47
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Buxaderas E, Alonso DA, Nájera C. Synthesis of DihydroisobenzofuransviaPalladium-Catalyzed Sequential Alkynylation/Annulation of 2-Bromobenzyl and 2-Chlorobenzyl Alcohols under Microwave Irradiation. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201400457] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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48
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Yuan D, Huynh HV. Hetero-dicarbene Complexes of Palladium(II): Syntheses and Catalytic Activities. Organometallics 2014. [DOI: 10.1021/om500659v] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Dan Yuan
- Department of Chemistry, National University of Singapore
, 3 Science Drive 3, Singapore
117543, Republic of Singapore
| | - Han Vinh Huynh
- Department of Chemistry, National University of Singapore
, 3 Science Drive 3, Singapore
117543, Republic of Singapore
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49
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Indu S, Subramanian P, Kaliappan KP. Transition-Metal-Catalyzed Selective Cyclization Strategy to 2-Substituted Benzofurans and Indoles en Route to the Oxa Analogues of Isocryptolepine. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402869] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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50
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Aronica LA, Giannotti L, Giuntini S, Caporusso AM. Synthesis of 2-Alkylideneisochromans by Cyclocarbonylative Sonogashira Reactions. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402979] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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