1
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Zhang X, Chang M, Ni T, Liu S, Li W, Xu X. CuBr 2-mediated dehydrogenative [4+2] annulation of 1-naphthyl-1,3-indandiones and alkenes. Chem Commun (Camb) 2024; 60:9070-9073. [PMID: 39101974 DOI: 10.1039/d4cc02386b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/06/2024]
Abstract
Intermolecular annulation reactions of 1-naphthyl-1,3-indandiones with alkenes proceed efficiently in the presence of a copper catalyst to generate spirocarbocycle compounds. Various spirocyclic molecules bearing an all-carbon quaternary center could be obtained by this novel method with good yields, excellent regioselectivity, and good functional group tolerance. A radical mechanism is proposed based on the HRMS analysis results of control experiments.
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Affiliation(s)
- Xu Zhang
- College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang 473061, China.
| | - Mengfan Chang
- College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang 473061, China.
| | - Tongtong Ni
- College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang 473061, China.
| | - Shuhan Liu
- College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang 473061, China.
| | - Wenguang Li
- College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang 473061, China.
| | - Xuefeng Xu
- College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang 473061, China.
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2
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David M, Galli E, Brown RCD, Feroci M, Vetica F, Bortolami M. 1-Butyl-3-methylimidazolium tetrafluoroborate as suitable solvent for BF 3: the case of alkyne hydration. Chemistry vs electrochemistry. Beilstein J Org Chem 2023; 19:1966-1981. [PMID: 38169890 PMCID: PMC10760484 DOI: 10.3762/bjoc.19.147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Accepted: 12/12/2023] [Indexed: 01/05/2024] Open
Abstract
In order to replace the expensive metal/ligand catalysts and classic toxic and volatile solvents, commonly used for the hydration of alkynes, the hydration reaction of alkynes was studied in the ionic liquid 1-butyl-3-methylimidazolium tetrafluoroborate (BMIm-BF4) adding boron trifluoride diethyl etherate (BF3·Et2O) as catalyst. Different ionic liquids were used, varying the cation or the anion, in order to identify the best one, in terms of both efficiency and reduced costs. The developed method was efficaciously applied to different alkynes, achieving the desired hydration products with good yields. The results obtained using a conventional approach (i.e., adding BF3·Et2O) were compared with those achieved using BF3 electrogenerated in BMIm-BF4, demonstrating the possibility of obtaining the products of alkyne hydration with analogous or improved yields, using less hazardous precursors to generate the reactive species in situ. In particular, for terminal arylalkynes, the electrochemical route proved to be advantageous, yielding preferentially the hydration products vs the aldol condensation products. Importantly, the ability to recycle the ionic liquid in subsequent reactions was successfully demonstrated.
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Affiliation(s)
- Marta David
- Department of Basic and Applied Sciences for Engineering (SBAI), Sapienza University of Rome, via Castro Laurenziano, 7, 00161 Rome, Italy
| | - Elisa Galli
- Department of Basic and Applied Sciences for Engineering (SBAI), Sapienza University of Rome, via Castro Laurenziano, 7, 00161 Rome, Italy
| | - Richard C D Brown
- School of Chemistry, University of Southampton, Southampton SO17 1BJ, UK
| | - Marta Feroci
- Department of Basic and Applied Sciences for Engineering (SBAI), Sapienza University of Rome, via Castro Laurenziano, 7, 00161 Rome, Italy
| | - Fabrizio Vetica
- Department of Chemistry, Sapienza University of Rome, piazzale Aldo Moro, 5, 00185 Rome, Italy
| | - Martina Bortolami
- Department of Basic and Applied Sciences for Engineering (SBAI), Sapienza University of Rome, via Castro Laurenziano, 7, 00161 Rome, Italy
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3
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Minyaylo EO, Zaitsev AV, Ol'shevskaya VA, Peregudov AS, Anisimov AA. The CH-functionalization of B-substituted organosilicon derivatives of polyhedral carboranes as a way to obtain new materials. MENDELEEV COMMUNICATIONS 2023. [DOI: 10.1016/j.mencom.2023.01.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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4
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Chen Y, Liao Z, Cao T, Zhu S. An efficient method to synthesize N/O, O-difluoroboron complexes from alkynes. GREEN SYNTHESIS AND CATALYSIS 2021. [DOI: 10.1016/j.gresc.2021.11.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
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5
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Pianoski KE, Poletto J, Vieira da Silva MJ, Ascencio Camargo JN, Jacomini AP, Gonçalves DS, Back DF, Moura S, Rosa FA. 1,2-Addition to trifluoromethylated β-enamino diketones: regioselective synthesis of trifluoromethyl-containing azomethine pyrazoles and isoxazoles. Org Biomol Chem 2020; 18:2524-2537. [DOI: 10.1039/d0ob00319k] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Trifluoromethylated β-enamino diketones undergo type 1,2-addition leading to regioselective synthesis of trifluoromethylated azoles containing an azomethine group.
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Affiliation(s)
| | - Julia Poletto
- Departamento de Química
- Universidade Estadual de Maringá (UEM)
- Maringá
- Brazil
| | | | | | | | | | - Davi Fernando Back
- Departamento de Química
- Universidade Federal de Santa Maria (UFSM)
- 97110-970 - Santa Maria
- Brazil
| | - Sidnei Moura
- Instituto de Biotecnologia
- Universidade de Caxias do Sul (UCS)
- Caxias do Sul
- Brazil
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6
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Moriya K, Shimada R, Ono K. Difluoroboron Chelation to Quinacridonequinone: A Synthetic Method for Air-Sensitive 6,13-Dihydroxyquinacridone via Boron Complexes. Chem Asian J 2019; 14:1452-1456. [PMID: 30895741 DOI: 10.1002/asia.201900219] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Revised: 03/17/2019] [Indexed: 11/08/2022]
Abstract
This study aims to perform the chelation of difluoroboron (BF2 ) to quinacridonequinone (QQ). The resulting dark green solid was determined to be QA-BF2 , which is a BF2 complex of 6,13-dihydroxyquinacridone (QA-OH), and not QQ-BF2 , which is a BF2 complex of QQ. This result indicated that QQ-BF2 was first generated as an O,O-bidentate chelate, which immediately underwent a two-electron reduction to produce QA-BF2 . This compound was converted to air-sensitive QA-OH by undergoing hydrolysis in argon. Since QA-OH has a strong electron-donating property, it easily produced QQ via air oxidation in the solution. QA-OH also acts as a reducing reagent for quinones. The crystal packing of QA-OH is a herringbone type with short π⋅⋅⋅π contacts, and a good hole mobility has been suggested by theoretical calculations. Herein, a new synthetic method from QQ to QA-OH using BF2 chelation and hydrolysis was proposed. QA-BF2 and QA-OH are useful organic functional pigments and reducing reagents.
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Affiliation(s)
- Koichiro Moriya
- Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya, 466-8555, Japan
| | - Ryohei Shimada
- Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya, 466-8555, Japan
| | - Katsuhiko Ono
- Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya, 466-8555, Japan
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7
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Hirschbeck V, Böldl M, Gehrtz PH, Fleischer I. Tandem Acyl Substitution/Michael Addition of Thioesters with Vinylmagnesium Bromide. Org Lett 2019; 21:2578-2582. [DOI: 10.1021/acs.orglett.9b00538] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Vera Hirschbeck
- Institute of Organic Chemistry, University of Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
| | - Marlene Böldl
- Institute of Organic Chemistry, University of Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
| | - Paul H. Gehrtz
- Institute of Organic Chemistry, University of Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
| | - Ivana Fleischer
- Institute of Organic Chemistry, University of Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
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8
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Lugovik KI, Eltyshev AK, Suntsova PO, Smoluk LT, Belousova AV, Ulitko MV, Minin AS, Slepukhin PA, Benassi E, Belskaya NP. Fluorescent boron complexes based on new N,O-chelates as promising candidates for flow cytometry. Org Biomol Chem 2019; 16:5150-5162. [PMID: 29963677 DOI: 10.1039/c8ob00868j] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
This study presents the synthesis and optical properties of a new class of bright green-yellow fluorescent dyes with potential applications in bioimaging. A facile synthetic route via the chelation of aryl(hetaryl)aminoacryloylthiophene scaffolds with a BF2 fragment is presented. The photophysical properties of the dyes are attributed to the nature and position of electron-donating and electron-withdrawing substituents. Upon coordination to a BF2 fragment, characteristic emission was observed, with λem ranging from 503 to 543 nm and quantum yields of 0.14-0.42. Compared with parent aryl(hetaryl)aminoacryloylthiophenes, a significant red shift in absorption (up to 480 nm in solution) and emission (up to 543 nm in solution and 610 nm in the solid state) and high chemical stability and photostability were observed. The electron-accepting character of the substituents on the terminal aromatic ring or replacing this fragment with pyridine or pyrazine moieties resulted in increased quantum yields. To gain insight into the electronic structures and optical properties, quantum mechanical calculations were performed. The results of (TD-)DFT calculations supported the structural and spectroscopic data and showed the features of electronic distribution in the frontier molecular orbitals and active electrophilic and nucleophilic sites in the compounds investigated. Synthesized BF2 complexes are promising dyes for cell imaging and flow cytometry owing to their ready penetration and accumulation in cells.
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Affiliation(s)
- Kseniya I Lugovik
- Ural Federal University, 19 Mira Str., Yekaterinburg, 620002, Russian Federation.
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9
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Wang S, Liu M, Chen X, Wang H, Zhai H. Copper-catalyzed decarboxylative propargylation/hydroamination reactions: access to C3 β-ketoester-functionalized indoles. Chem Commun (Camb) 2018; 54:8375-8378. [DOI: 10.1039/c8cc04499f] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A copper-catalyzed reaction of ethynyl benzoxazinanones with readily accessible β-ketoesters via a decarboxylative propargylation/hydroamination sequence has been developed. This protocol furnished a diverse range of C3 β-ketoester-functionalized indoles in good to excellent yields.
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Affiliation(s)
- Sasa Wang
- The State Key Laboratory of Chemical Oncogenomics
- Key Laboratory of Chemical Genomics
- Shenzhen Graduate School of Peking University
- Shenzhen 518055
- China
| | - Miao Liu
- The State Key Laboratory of Chemical Oncogenomics
- Key Laboratory of Chemical Genomics
- Shenzhen Graduate School of Peking University
- Shenzhen 518055
- China
| | - Xinzheng Chen
- The State Key Laboratory of Chemical Oncogenomics
- Key Laboratory of Chemical Genomics
- Shenzhen Graduate School of Peking University
- Shenzhen 518055
- China
| | - Huifei Wang
- The State Key Laboratory of Chemical Oncogenomics
- Key Laboratory of Chemical Genomics
- Shenzhen Graduate School of Peking University
- Shenzhen 518055
- China
| | - Hongbin Zhai
- The State Key Laboratory of Chemical Oncogenomics
- Key Laboratory of Chemical Genomics
- Shenzhen Graduate School of Peking University
- Shenzhen 518055
- China
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10
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Horwitz MA, Johnson JS. Local Desymmetrization through Diastereotopic Group Selection: An Enabling Strategy for Natural Product Synthesis. European J Org Chem 2017; 2017:1381-1390. [PMID: 28533701 PMCID: PMC5437555 DOI: 10.1002/ejoc.201601481] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Indexed: 12/22/2022]
Abstract
The application of desymmetrization strategies in chemical synthesis has allowed fundamentally new synthetic sequences that efficiently create dense and polyfunctional stereochemical arrays. Enantiotopic group discrimination has become a well-established method of global desymmetrization, while the conceptually unique strategy of local desymmetrization by diastereotopic group discrimination has its own advantages. This microreview focuses on the application of local desymmetrization in natural product synthesis and places a particular emphasis on the efficiency engendered by diastereotopic group discrimination. Local desymmetrization is subdivided into three distinct manifolds; examples under each paradigm are presented and compared.
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Affiliation(s)
- Matthew A Horwitz
- Department of Chemistry, The University of North Carolina at Chapel Hill Chapel Hill, NC 27599 (USA)
| | - Jeffrey S Johnson
- Department of Chemistry, The University of North Carolina at Chapel Hill Chapel Hill, NC 27599 (USA)
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11
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Installation of α-ketocarboxylate groups to C7-position of indolines via C−H addition and oxidation approach under ruthenium catalysis. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.02.022] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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12
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Xu C, Xu J. An expeditious method to synthesize difluoroboron complexes of β-keto amides from β-keto nitriles and BF3·OEt2. Org Biomol Chem 2017; 15:6375-6383. [DOI: 10.1039/c7ob01356f] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
An expeditious and convenient method has been developed to synthesize difluoroboron complexes of β-keto amides from β-keto nitriles and BF3·OEt2.
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Affiliation(s)
- Chuangchuang Xu
- State Key Laboratory of Chemical Resource Engineering
- Department of Organic Chemistry
- Faculty of Science
- Beijing University of Chemical Technology
- Beijing 100029
| | - Jiaxi Xu
- State Key Laboratory of Chemical Resource Engineering
- Department of Organic Chemistry
- Faculty of Science
- Beijing University of Chemical Technology
- Beijing 100029
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13
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Tanaka M, Muraoka S, Matsui Y, Ohta E, Ogaki T, Mizuno K, Ikeda H. Cooperative effects of o- and m-methyl groups on the intramolecular charge-transfer emission properties of dibenzoylmethanatoboron difluorides. Photochem Photobiol Sci 2017; 16:845-853. [PMID: 28397920 DOI: 10.1039/c7pp00005g] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Intramolecular charge-transfer character of the p-xylyl derivative of dibenzoylmethanatoboron difluoride is induced by o- and m-methyl groups cooperatively.
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Affiliation(s)
- Mirai Tanaka
- Department of Applied Chemistry
- Graduate School of Engineering
- Osaka Prefecture University
- Sakai
- Japan
| | - Shunsuke Muraoka
- Department of Applied Chemistry
- Graduate School of Engineering
- Osaka Prefecture University
- Sakai
- Japan
| | - Yasunori Matsui
- Department of Applied Chemistry
- Graduate School of Engineering
- Osaka Prefecture University
- Sakai
- Japan
| | - Eisuke Ohta
- Department of Applied Chemistry
- Graduate School of Engineering
- Osaka Prefecture University
- Sakai
- Japan
| | - Takuya Ogaki
- Department of Applied Chemistry
- Graduate School of Engineering
- Osaka Prefecture University
- Sakai
- Japan
| | - Kazuhiko Mizuno
- Department of Applied Chemistry
- Graduate School of Engineering
- Osaka Prefecture University
- Sakai
- Japan
| | - Hiroshi Ikeda
- Department of Applied Chemistry
- Graduate School of Engineering
- Osaka Prefecture University
- Sakai
- Japan
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14
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Boyce JH, Eschenbrenner-Lux V, Porco JA. Syntheses of (+)-30-epi-, (-)-6-epi-, (±)-6,30-epi-13,14-Didehydroxyisogarcinol and (±)-6,30-epi-Garcimultiflorone A Utilizing Highly Diastereoselective, Lewis Acid-Controlled Cyclizations. J Am Chem Soc 2016; 138:14789-14797. [PMID: 27744695 PMCID: PMC5315221 DOI: 10.1021/jacs.6b09727] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The first syntheses of 13,14-didehydroxyisogarcinol (6) and garcimultiflorone A (5) stereoisomers are reported in six steps from a commercially available phloroglucinol. Lewis acid-controlled, diastereoselective cationic oxycyclizations enabled asymmetric syntheses of (-)-6-epi-6 and (+)-30-epi-6. A similar strategy enabled production of the meso-dervied isomers (±)-6,30-epi-6 and (±)-6,30-epi-5. Finally, a convenient strategy for gram scale synthesis was developed utilizing diastereomer separation at a later stage in the synthesis that minimized the number of necessary synthetic operations to access all possible stereoisomers.
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Affiliation(s)
- Jonathan H. Boyce
- Department of Chemistry, Center for Molecular Discovery (BU-CMD), Boston University, 590 Commonwealth Avenue, Boston, Massachusetts 02215, United States
| | - Vincent Eschenbrenner-Lux
- Department of Chemistry, Center for Molecular Discovery (BU-CMD), Boston University, 590 Commonwealth Avenue, Boston, Massachusetts 02215, United States
| | - John A. Porco
- Department of Chemistry, Center for Molecular Discovery (BU-CMD), Boston University, 590 Commonwealth Avenue, Boston, Massachusetts 02215, United States
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15
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Wang C, Li Y, Gong M, Wu Q, Zhang J, Kim JK, Huang M, Wu Y. Method for Direct Synthesis of α-Cyanomethyl-β-dicarbonyl Compounds with Acetonitrile and 1,3-Dicarbonyls. Org Lett 2016; 18:4151-3. [DOI: 10.1021/acs.orglett.6b01871] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Chenyang Wang
- College of Chemistry and
Molecular Engineering, Henan Key Laboratory of Chemical Biology and
Organic Chemistry, Key Laboratory of Applied Chemistry of Henan Universities, Zhengzhou University, Zhengzhou 450052, P.R. China
| | - Yabo Li
- College of Chemistry and
Molecular Engineering, Henan Key Laboratory of Chemical Biology and
Organic Chemistry, Key Laboratory of Applied Chemistry of Henan Universities, Zhengzhou University, Zhengzhou 450052, P.R. China
| | - Ming Gong
- College of Chemistry and
Molecular Engineering, Henan Key Laboratory of Chemical Biology and
Organic Chemistry, Key Laboratory of Applied Chemistry of Henan Universities, Zhengzhou University, Zhengzhou 450052, P.R. China
| | - Qi Wu
- College of Chemistry and
Molecular Engineering, Henan Key Laboratory of Chemical Biology and
Organic Chemistry, Key Laboratory of Applied Chemistry of Henan Universities, Zhengzhou University, Zhengzhou 450052, P.R. China
| | - Jianye Zhang
- College of Chemistry and
Molecular Engineering, Henan Key Laboratory of Chemical Biology and
Organic Chemistry, Key Laboratory of Applied Chemistry of Henan Universities, Zhengzhou University, Zhengzhou 450052, P.R. China
| | - Jung Keun Kim
- College of Chemistry and
Molecular Engineering, Henan Key Laboratory of Chemical Biology and
Organic Chemistry, Key Laboratory of Applied Chemistry of Henan Universities, Zhengzhou University, Zhengzhou 450052, P.R. China
| | - Mengmeng Huang
- College of Chemistry and
Molecular Engineering, Henan Key Laboratory of Chemical Biology and
Organic Chemistry, Key Laboratory of Applied Chemistry of Henan Universities, Zhengzhou University, Zhengzhou 450052, P.R. China
| | - Yangjie Wu
- College of Chemistry and
Molecular Engineering, Henan Key Laboratory of Chemical Biology and
Organic Chemistry, Key Laboratory of Applied Chemistry of Henan Universities, Zhengzhou University, Zhengzhou 450052, P.R. China
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16
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Mo S, Xu C, Xu J. Expeditious and Convenient Synthesis of Polycyclic Difluoroboron Complexes of 2-Oxoindoline-3-carboxamides by Tandem Reaction. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201600118] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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17
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Liu C, Zhang H, Zhao J. Synthesis, characterization and properties of furan-containing difluoroboron complexes. RSC Adv 2016. [DOI: 10.1039/c6ra20489a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
New β-diketonate difluoroboron complexes (F1–F4) containing a furan ring have been developed, and their luminescence properties have been investigated systematically.
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Affiliation(s)
- Chun Liu
- State Key Laboratory of Fine Chemicals
- Dalian Univeristry of Technology
- Dalian 116024
- China
| | - Hao Zhang
- State Key Laboratory of Fine Chemicals
- Dalian Univeristry of Technology
- Dalian 116024
- China
| | - Jianzhang Zhao
- State Key Laboratory of Fine Chemicals
- Dalian Univeristry of Technology
- Dalian 116024
- China
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18
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Laha RM, Khamarui S, Manna SK, Maiti DK. In Situ Generated AgII-Catalyzed Selective Oxo-Esterification of Alkyne with Alcohol to α-Ketoester: Photophysical Study. Org Lett 2015; 18:144-7. [DOI: 10.1021/acs.orglett.5b03484] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Radha M. Laha
- Department of Chemistry, University of Calcutta, University College of Science, 92 A. P. C. Road, Kolkata 700009, India
| | - Saikat Khamarui
- Department of Chemistry, University of Calcutta, University College of Science, 92 A. P. C. Road, Kolkata 700009, India
| | - Saikat K. Manna
- Department of Chemistry, University of Calcutta, University College of Science, 92 A. P. C. Road, Kolkata 700009, India
| | - Dilip K. Maiti
- Department of Chemistry, University of Calcutta, University College of Science, 92 A. P. C. Road, Kolkata 700009, India
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19
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Shokova EA, Kim JK, Kovalev VV. 1,3-Diketones. Synthesis and properties. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2015. [DOI: 10.1134/s1070428015060019] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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20
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Wu DE, Lu XL, Xia M. Study on the solution and solid-state fluorescence of novel BF2 complexes with (Z)-2-[phenanthridin-6(5H)-ylidene]-1-phenylethanone and its derivatives as ligands. NEW J CHEM 2015. [DOI: 10.1039/c5nj00926j] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
A family of novel N,O-chelated BF2 complexes with intense solution and solid-state emission were synthesized and their photophysical properties were studied.
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Affiliation(s)
- Ding-Er Wu
- Department of Chemistry
- Zhejiang Sci-Tech University
- Hangzhou 310018
- P. R. China
| | - Xiao-Lin Lu
- Department of Chemistry
- Zhejiang Sci-Tech University
- Hangzhou 310018
- P. R. China
| | - Min Xia
- Department of Chemistry
- Zhejiang Sci-Tech University
- Hangzhou 310018
- P. R. China
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21
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Zhang X, Xie T, Cui M, Yang L, Sun X, Jiang J, Zhang G. General design strategy for aromatic ketone-based single-component dual-emissive materials. ACS APPLIED MATERIALS & INTERFACES 2014; 6:2279-84. [PMID: 24484404 DOI: 10.1021/am405209w] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Materials with both fluorescence and room-temperature phosphorescence (RTP) can be useful in the field of optoelectronics. Here we present a general strategy, taking advantage of carbonyl compounds, which have been known to possess efficient intersystem crossing with high triplet state yield, as well as a strongly fluorescent intramolecular charge-transfer (ICT) state, to produce materials with both fluorescence and RTP at the same time, or dual-emission. In the presented model systems, in order to generate a suitable ICT state, Lewis acid binding to aromatic ketone derivatives has been proved to be a viable method. We have selected AlCl3, BCl3, BF3, and GdCl3 as binding Lewis acids, in that they exhibit sufficiently strong binding affinity toward the aromatic ketone derivatives to afford stable complexes and yet do not possess low-lying electronic transitions vs the ligands. We have successfully observed dual-emission from these designed complexes in polymers, which act to suppress competitive thermal decay at room temperature. One of the complexes is particularly interesting as it is dual-emissive in the crystalline state. Single-crystal XRD reveals that the molecule forms multiple hydrogen bonds with its neighbors in crystals, which may significantly enhance the rigidity of the environment.
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Affiliation(s)
- Xuepeng Zhang
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China , Hefei, 230026 Anhui, China
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22
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Nielsen DU, Lescot C, Gøgsig TM, Lindhardt AT, Skrydstrup T. Pd-Catalyzed Carbonylative α-Arylation of Aryl Bromides: Scope and Mechanistic Studies. Chemistry 2013; 19:17926-38. [DOI: 10.1002/chem.201303384] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2013] [Indexed: 11/10/2022]
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23
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Chen M, Roush WR. Enantioselective synthesis of (Z)- and (E)-2-methyl-1,5-anti-pentenediols via an allene hydroboration-double-allylboration reaction sequence. J Am Chem Soc 2013; 135:9512-7. [PMID: 23758559 PMCID: PMC3733567 DOI: 10.1021/ja4033633] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Kinetically controlled hydroboration of allenylboronate 5 followed by double allylboration with the resulting allylborane (Z)-7 gave (Z)-2-methyl-1,5-anti-pentenediols 6 in good yield and high enantioselectivity in the presence of 10% BF3·OEt2 as the catalyst in the second allylboration step. Under thermodynamically controlled isomerization conditions, (Z)-7 can readily isomerize to (E)-7. Double allylboration of representative aldehydes with allylborane (E)-7 gave (E)-2-methyl-1,5-anti-pentenediols 4 in good yield and high enantioselectivity without requiring use of the BF3·OEt2 catalyst. Thus, 2-methyl-1,5-anti-pentenediols with either olefin geometry can be synthesized from the same allenylboronate precursor 5. Furthermore, 1,5-pentenediols 4 and 6 can be easily converted to 1,3,5-triols with excellent diastereoselectivity in one step.
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Affiliation(s)
- Ming Chen
- Department of Chemistry, Scripps Florida, Jupiter, Florida 33458
| | - William R. Roush
- Department of Chemistry, Scripps Florida, Jupiter, Florida 33458
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24
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Casimiro M, Oña-Burgos P, Meyer J, Styra S, Kuzu I, Breher F, Fernández I. On the Solution Behaviour of Benzyllithium⋅(−)-Sparteine Adducts and Related Lithium Organyls - A Case Study on Applying7Li,15N{1H} HMQC and Further NMR Methods, Including Some Investigation into Asymmetric Synthesis. Chemistry 2012. [DOI: 10.1002/chem.201202346] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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25
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Quan L, Chen Y, Lv XJ, Fu WF. Aggregation-Induced Photoluminescent Changes of Naphthyridine-BF2Complexes. Chemistry 2012; 18:14599-604. [DOI: 10.1002/chem.201201592] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2012] [Indexed: 11/10/2022]
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26
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Kubota Y, Hara H, Tanaka S, Funabiki K, Matsui M. Synthesis and Fluorescence Properties of Novel Pyrazine–Boron Complexes Bearing a β-Iminoketone Ligand. Org Lett 2011; 13:6544-7. [DOI: 10.1021/ol202819w] [Citation(s) in RCA: 113] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Yasuhiro Kubota
- Department of Materials Science and Technology, Faculty of Engineering, Gifu University, Yanagido, Gifu 501-1193, Japan
| | - Hiroshi Hara
- Department of Materials Science and Technology, Faculty of Engineering, Gifu University, Yanagido, Gifu 501-1193, Japan
| | - Syunki Tanaka
- Department of Materials Science and Technology, Faculty of Engineering, Gifu University, Yanagido, Gifu 501-1193, Japan
| | - Kazumasa Funabiki
- Department of Materials Science and Technology, Faculty of Engineering, Gifu University, Yanagido, Gifu 501-1193, Japan
| | - Masaki Matsui
- Department of Materials Science and Technology, Faculty of Engineering, Gifu University, Yanagido, Gifu 501-1193, Japan
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27
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Navgire M, Yelwande A, Arbad B, Lande M. Effect of Poly(ethylene glycol)-400 and Carbon on MoO3 Nanocomposite Materials and Its Catalytic Activity. CHINESE J CHEM 2011. [DOI: 10.1002/cjoc.201180355] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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28
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Khan FA, Rao CN. Grob fragmentation of norbornyl α-diketones: a route to α-ketoenols and aromatic compounds. J Org Chem 2011; 76:3320-8. [PMID: 21413814 DOI: 10.1021/jo200223a] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
An efficient acid-catalyzed Grob fragmentation of symmetrical and asymmetrically substituted norbornyl α-diketones to the corresponding six-membered α-ketoenols is reported. The regio- and stereochemical outcome of the Grob fragmentation of C2 mono- and disubstituted α-diketones was investigated. A single regioisomer resulting from a favorable half-chair intermediate was normally observed. A departure from the normal course was noticed for C2 disubstituted α-diketones possessing an exo-methyl and an endo-methoxycarbonyl derivative, giving the opposite regioisomers due to initial formation of the hemiketal. The bromo analogues of the C2 disubstituted α-diketones furnished an unusual byproduct, which appears to have been formed through highly reactive fused four-membered bicyclo[2.2.0]hexane intermediates. A plausible mechanistic proposal involving the gem-dihalo intermediate, which in one case was actually isolated as its BF(2)-complex, is outlined. The fragmentation protocol was applied to various norbornyl substrates including bis-α-diketone derivatives. The methodology was successfully utilized for the synthesis of substituted aromatic compounds.
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Affiliation(s)
- Faiz Ahmed Khan
- Department of Chemistry, Indian Institute of Technology, Kanpur 208016, India
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