1
|
Ando Y, Ogawa D, Ohmori K, Suzuki K. Enantioselective Total Syntheses of Preussomerins: Control of Spiroacetal Stereogenicity by Photochemical Reaction of a Naphthoquinone through 1,6-Hydrogen Atom Transfer. Angew Chem Int Ed Engl 2023; 62:e202213682. [PMID: 36446739 PMCID: PMC10107447 DOI: 10.1002/anie.202213682] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 11/16/2022] [Accepted: 11/29/2022] [Indexed: 12/03/2022]
Abstract
We report the enantioselective total syntheses of preussomerins EG1 , EG2 , and EG3 . The key transformation is a stereospecific photochemical reaction involving 1,6-hydrogen atom transfer to achieve retentive replacement of a C-H with a C-O bond, enabling otherwise-difficult control of the spiroacetal stereogenic center.
Collapse
Affiliation(s)
- Yoshio Ando
- Department of Chemistry, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo, 152-8551, Japan
| | - Daichi Ogawa
- Department of Chemistry, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo, 152-8551, Japan
| | - Ken Ohmori
- Department of Chemistry, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo, 152-8551, Japan
| | - Keisuke Suzuki
- Department of Chemistry, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo, 152-8551, Japan
| |
Collapse
|
2
|
Bendová H, Kamenická B, Weidlich T, Beneš L, Vlček M, Lacina P, Švec P. Application of Raney Al-Ni Alloy for Simple Hydrodehalogenation of Diclofenac and Other Halogenated Biocidal Contaminants in Alkaline Aqueous Solution under Ambient Conditions. MATERIALS 2022; 15:ma15113939. [PMID: 35683235 PMCID: PMC9182476 DOI: 10.3390/ma15113939] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/17/2022] [Revised: 05/25/2022] [Accepted: 05/30/2022] [Indexed: 11/16/2022]
Abstract
Raney Al-Ni contains 62% of Ni2Al3 and 38% NiAl3 crystalline phases. Its applicability has been studied within an effective hydrodehalogenation of hardly biodegradable anti-inflammatory drug diclofenac in model aqueous concentrates and, subsequently, even in real hospital wastewater with the aim of transforming them into easily biodegradable products. In model aqueous solution, complete hydrodechlorination of 2 mM aqueous diclofenac solution (0.59 g L−1) yielding the 2-anilinophenylacetate was achieved in less than 50 min at room temperature and ambient pressure using only 9.7 g L−1 of KOH and 1.65 g L−1 of Raney Al-Ni alloy. The dissolving of Al during the hydrodehalogenation process is accompanied by complete consumption of NiAl3 crystalline phase and partial depletion of Ni2Al3. A comparison of the hydrodehalogenation ability of a mixture of diclofenac and other widely used halogenated aromatic or heterocyclic biocides in model aqueous solution using Al-Ni was performed to verify the high hydrodehalogenation activity for each of the used halogenated contaminants. Remarkably, the robustness of Al-Ni-based hydrodehalogenation was demonstrated even for the removal of non-biodegradable diclofenac in real hospital wastewater with high chloride and nitrate content. After removal of the insoluble part of the Al-Ni for subsequent hydrometallurgical recycling, the low quantity of residual Ni was removed together with insoluble Al(OH)3 obtained after neutralization of aqueous filtrate by filtration.
Collapse
Affiliation(s)
- Helena Bendová
- Chemical Technology Group, Institute of Environmental and Chemical Engineering, Faculty of Chemical Technology, University of Pardubice, Studentská 573, 532 10 Pardubice, Czech Republic; (H.B.); (B.K.)
| | - Barbora Kamenická
- Chemical Technology Group, Institute of Environmental and Chemical Engineering, Faculty of Chemical Technology, University of Pardubice, Studentská 573, 532 10 Pardubice, Czech Republic; (H.B.); (B.K.)
| | - Tomáš Weidlich
- Chemical Technology Group, Institute of Environmental and Chemical Engineering, Faculty of Chemical Technology, University of Pardubice, Studentská 573, 532 10 Pardubice, Czech Republic; (H.B.); (B.K.)
- Correspondence:
| | - Ludvík Beneš
- Joint Laboratory of Solid State Chemistry, Faculty of Chemical Technology, University of Pardubice, Studentská 573, 532 10 Pardubice, Czech Republic; (L.B.); (M.V.)
| | - Milan Vlček
- Joint Laboratory of Solid State Chemistry, Faculty of Chemical Technology, University of Pardubice, Studentská 573, 532 10 Pardubice, Czech Republic; (L.B.); (M.V.)
| | - Petr Lacina
- GEOtest, a.s., Šmahova 1244/112, 627 00 Brno, Czech Republic;
| | - Petr Švec
- Department of General and Inorganic Chemistry, Faculty of Chemical Technology, University of Pardubice, Studentská 573, 532 10 Pardubice, Czech Republic;
| |
Collapse
|
3
|
Experimental Identification of the Roles of Fe, Ni and Attapulgite in Nitroreduction and Dechlorination of p-Chloronitrobenzene by Attapulgite-Supported Fe/Ni Nanoparticles. MATERIALS 2022; 15:ma15031254. [PMID: 35161200 PMCID: PMC8840558 DOI: 10.3390/ma15031254] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/11/2021] [Revised: 02/02/2022] [Accepted: 02/05/2022] [Indexed: 02/05/2023]
Abstract
The porous-material loading and noble-metal doping of nanoscale zero-valent iron (nFe) have been widely used as countermeasures to overcome its limitations. However, few studies focused on the experimental identification of the roles of Fe, the carrier and the doped metal in the application of nFe. In this study, the nitroreduction and dechlorination of p-chloronitrobenzene (p-CNB) by attapulgite-supported Fe/Ni nanoparticles (ATP-nFe/Ni) were investigated and the roles of Fe, Ni and attapulgite were examined. The contributions of Ni are alleviating the oxidization of Fe, acting as a catalyst to trigger the conversion of H2 to H*(active hydrogen atom) and promoting electron transfer of Fe. The action mechanisms of Fe in reduction of -NO2 to -NH2 were confirmed to be electron transfer and to produce H2 via corrosion. When H2 is catalyzed to H* by Ni, the production H* leads to the nitroreduction. In additon, H* is also responsible for the dechlorination of p-CNB and its nitro-reduced product, p-chloroaniline. Another corrosion product of Fe, Fe2+, is incapable of acting in the nitroreduction and dechlorination of p-CNB. The roles of attapulgite includes providing an anoxic environment for nFe, decreasing nFe agglomeration and increasing reaction sites. The results indicate that the roles of Fe, Ni and attapulgite in nitroreduction and dechlorination of p-CNB by ATP-nFe/Ni are crucial to the application of iron-based technology.
Collapse
|
4
|
Maghami A, Gholipour-Zanjani N, Khorasheh F, Arjmand M. A catalyzed method to remove polychlorinated biphenyls from contaminated transformer oil. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:13253-13267. [PMID: 34585346 DOI: 10.1007/s11356-021-16613-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Accepted: 09/14/2021] [Indexed: 06/13/2023]
Abstract
The disposal of polychlorinated biphenyls (PCBs) as persistent organic pollutants from the environment has been normally performed by isolation from soil or water because of their biological activity and toxic potential. In the present investigation, catalytic hydrodehalogenation was used to detoxify PCBs-contaminated transformer oil. All reactions were directed on an oil containing 11.09 wt% of PCBs utilizing palladium supported on multi-walled carbon nanotubes (Pd/MWCNTs). The amount of hexa-chlorine homologues reduced considerably from 5.07% to less than 800 ppm utilizing HDC at the atmosphere of argon. Moreover, the amounts of long half-lives and bioaccumulative congener of PCB 153 decreased considerably from 3.2% to less than 200 ppm. Besides, the quantity of some environmental pollutants like PCB 105 as a mono-ortho-substituted congener decreased considerably. The significant effects of reaction time, reaction temperature, and catalyst concentration on the efficiency were confirmed and modeled through Box-Behnken design. The optimal reaction condition with an efficiency of 96.67% was 70°C, with catalyst loading of 8 wt% and reaction time of 3.23 h. Furthermore, the quantity of turnover frequency of Pd/MWCNTs showed that it has more activity than palladium-carbon active supported in the ambient pressure without utilizing hydrogen gas in transformer oil complex. The study of the kinetic model revealed that the required activation energy (of 12.99 kJ/mol) to remove PCBs from transformer oil utilizing the present catalyst was lower than other catalyzed hydrodechlorination methods.
Collapse
Affiliation(s)
- Arash Maghami
- Department of Chemical Engineering, South Branch, Islamic Azad University, Tehran, Iran
| | | | - Farhad Khorasheh
- Department of Chemical and Petroleum Engineering, Sharif University of Technology, Tehran, Iran
| | - Mehdi Arjmand
- Department of Chemical Engineering, South Branch, Islamic Azad University, Tehran, Iran
| |
Collapse
|
5
|
Yamada T, Park K, Sajiki H. Development of Solid Catalysts for Selective Reactions and their Application to Continuous-Flow Reactions. J SYN ORG CHEM JPN 2021. [DOI: 10.5059/yukigoseikyokaishi.79.472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Tsuyoshi Yamada
- Laboratory of Organic Chemistry, Gifu Pharmaceutical University
| | | | - Hironao Sajiki
- Laboratory of Organic Chemistry, Gifu Pharmaceutical University
| |
Collapse
|
6
|
Gui J, Cai X, Chen L, Zhou Y, Zhu W, Jiang Y, Hu M, Chen X, Hu Y, Zhang S. Facile and practical hydrodehalogenations of organic halides enabled by calcium hydride and palladium chloride. Org Chem Front 2021. [DOI: 10.1039/d1qo00758k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
For the first time, calcium hydride and palladium chloride were used to reduce a wide range of organic halides including aromatic bromides, aromatic chlorides, aromatic triflates, aliphatic bromides, aliphatic chlorides and trihalomethyl compounds.
Collapse
Affiliation(s)
- Jingjing Gui
- Jiangsu Key Laboratory of Neuropsychiatric Diseases & College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, P.R. China
| | - Xin Cai
- Jiangsu Key Laboratory of Neuropsychiatric Diseases & College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, P.R. China
| | - Lingyun Chen
- Jiangsu Key Laboratory of Neuropsychiatric Diseases & College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, P.R. China
| | - Yuxin Zhou
- Jiangsu Key Laboratory of Neuropsychiatric Diseases & College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, P.R. China
| | - Wenjing Zhu
- Jiangsu Key Laboratory of Neuropsychiatric Diseases & College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, P.R. China
| | - Yuanrui Jiang
- Jiangsu Key Laboratory of Neuropsychiatric Diseases & College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, P.R. China
| | - Min Hu
- Jiangsu Key Laboratory of Neuropsychiatric Diseases & College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, P.R. China
| | - Xiaobei Chen
- State Key Laboratory of Bioreactor Engineering, and Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science & Technology, Shanghai, 200237, P.R. China
| | - Yanwei Hu
- Jiangsu Key Laboratory of Neuropsychiatric Diseases & College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, P.R. China
| | - Shilei Zhang
- Jiangsu Key Laboratory of Neuropsychiatric Diseases & College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, P.R. China
| |
Collapse
|
7
|
Raut SS, Shetty R, Raju NM, Kamble SP, Kulkarni PS. Screening of zero valent mono/bimetallic catalysts and recommendation of Raney Ni (without reducing agent) for dechlorination of 4-chlorophenol. CHEMOSPHERE 2020; 250:126298. [PMID: 32234622 DOI: 10.1016/j.chemosphere.2020.126298] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Revised: 02/06/2020] [Accepted: 02/20/2020] [Indexed: 06/11/2023]
Abstract
Chlorophenol (CP) is considered as environmentally hazardous material due to its acute toxicity, persistent nature and strong bioaccumulation. The dechlorination of 4-CP was investigated by using various catalysts such as bimetallic (Fe0/Cu0, Al0/Fe0), Pd/C, Raney Ni and Fe0 at room temperature. Among the catalysts studied, Raney Ni proved to be very economical and efficient catalyst that worked without the use of an external reducing agent. The dechlorination of 4-CP by Raney Ni was therefore further explored. Complete dechlorination of 4-CP (30 mg L-1) was achieved in 6 h at an optimum Raney Ni catalyst loading of 3 g L-1. The effect of triethylamine (TEA) and tripropylamine (TPA) was also investigated and it was observed that 100% dechlorination is possible in presence of 45 mg L-1 of TEA. The kinetics of dechlorination of 4-CP was investigated and found to be first order with a rate constant of 0.017 min-1 at 50 οC, and it enhances to 0.109 min-1 with addition of TEA. In the absence of a reducing agent, acidic to neutral pH favors dechlorination of 4-CP. The final product of dechlorination was estimated to be phenol by performing HPLC, LCMS and NMR analysis. Based on the results, a probable dechlorination mechanism of 4-CP is also proposed. It can be concluded that the catalytic hydrodechlorination is an effective and economical technique for dechlorination of 4-CP and it has a potential for the dechlorination of other toxic derivatives of chlorinated aromatics.
Collapse
Affiliation(s)
- Sandesh S Raut
- Energy & Environment Laboratory, Department of Applied Chemistry, Defence Institute of Advanced Technology (DU), Ministry of Defence, Girinagar, Pune, 411 025 India
| | - Rohit Shetty
- Chemical Engineering and Process Development Division, CSIR-National Chemical Laboratory, Pune, India; Academy of Scientific and Innovative Research (AcSIR), CSIR-NCL Pune, India
| | - Nikhi Maria Raju
- Chemical Engineering and Process Development Division, CSIR-National Chemical Laboratory, Pune, India
| | - Sanjay P Kamble
- Chemical Engineering and Process Development Division, CSIR-National Chemical Laboratory, Pune, India.
| | - Prashant S Kulkarni
- Energy & Environment Laboratory, Department of Applied Chemistry, Defence Institute of Advanced Technology (DU), Ministry of Defence, Girinagar, Pune, 411 025 India.
| |
Collapse
|
8
|
Yamamoto Y, Shimizu E, Ban K, Wada Y, Mizusaki T, Yoshimura M, Takagi Y, Sawama Y, Sajiki H. Facile Hydrogenative Deprotection of N-Benzyl Groups Using a Mixed Catalyst of Palladium and Niobic Acid-on-Carbon. ACS OMEGA 2020; 5:2699-2709. [PMID: 32095693 PMCID: PMC7033673 DOI: 10.1021/acsomega.9b03226] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Accepted: 01/21/2020] [Indexed: 05/12/2023]
Abstract
The palladium-on-carbon (Pd/C)-catalyzed hydrogenative deprotection of the N-benzyl-protecting group was effectively facilitated by the combined use of niobic acid-on-carbon (Nb2O5/C). Nb2O5/C is an acidic heterogeneous catalyst prepared from NbCl5 and activated carbon. The catalysts were easily removed from the reaction mixture and reusable. Deprotected amines were obtained in excellent yields without an additional neutralization process. The facilitating effect of Nb2O5/C was also observed during the Pd/C-catalyzed hydrogenative deprotection of the N-benzyloxycarbonyl (Cbz) and O-benzyl groups.
Collapse
Affiliation(s)
- Yuta Yamamoto
- Laboratory
of Organic Chemistry, Gifu Pharmaceutical
University, 1-25-4 Daigaku-nishi, Gifu 501-1196, Japan
| | - Eisho Shimizu
- Laboratory
of Organic Chemistry, Gifu Pharmaceutical
University, 1-25-4 Daigaku-nishi, Gifu 501-1196, Japan
| | - Kazuho Ban
- Laboratory
of Organic Chemistry, Gifu Pharmaceutical
University, 1-25-4 Daigaku-nishi, Gifu 501-1196, Japan
| | - Yoshiyuki Wada
- Catalysts
Development Center, N. E. Chemcat Corporation, 25-3 Koshindaira, Bando, Ibaraki 306-0608, Japan
| | - Tomoteru Mizusaki
- Catalysts
Development Center, N. E. Chemcat Corporation, 25-3 Koshindaira, Bando, Ibaraki 306-0608, Japan
| | - Masatoshi Yoshimura
- Catalysts
Development Center, N. E. Chemcat Corporation, 678 Ipponmatsu, Numazu, Shizuoka 410-0314, Japan
| | - Yukio Takagi
- Catalysts
Development Center, N. E. Chemcat Corporation, 678 Ipponmatsu, Numazu, Shizuoka 410-0314, Japan
| | - Yoshinari Sawama
- Laboratory
of Organic Chemistry, Gifu Pharmaceutical
University, 1-25-4 Daigaku-nishi, Gifu 501-1196, Japan
- E-mail: (Y.S.)
| | - Hironao Sajiki
- Laboratory
of Organic Chemistry, Gifu Pharmaceutical
University, 1-25-4 Daigaku-nishi, Gifu 501-1196, Japan
- E-mail: . Phone/Fax: (+81)-58-230-8109 (H.S.)
| |
Collapse
|
9
|
Yamada T, Ogawa A, Masuda H, Teranishi W, Fujii A, Park K, Ashikari Y, Tomiyasu N, Ichikawa T, Miyamoto R, Bai H, Matsuyama K, Nagaki A, Sajiki H. Pd catalysts supported on dual-pore monolithic silica beads for chemoselective hydrogenation under batch and flow reaction conditions. Catal Sci Technol 2020. [DOI: 10.1039/d0cy01442g] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two different types of palladium catalysts supported on dual-pore monolithic silica beads [5% Pd/SM and 0.25% Pd/SM(sc)] for chemoselective hydrogenation were developed.
Collapse
|
10
|
Enomoto A, Kajita S, Fujita KI. Convenient Method for the Production of Deuterium Gas Catalyzed by an Iridium Complex and Its Application to the Deuteration of Organic Compounds. CHEM LETT 2019. [DOI: 10.1246/cl.180870] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Akane Enomoto
- Graduate School of Human and Environmental Studies, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
| | - Shunpei Kajita
- Graduate School of Human and Environmental Studies, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
| | - Ken-ichi Fujita
- Graduate School of Human and Environmental Studies, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
| |
Collapse
|
11
|
Parveen I, Khan D, Ahmed N. Regioselective Hydrodehalogenation of Aromatic α‐ and β‐Halo carbonyl Compounds by CuI in Isopropanol. European J Org Chem 2019. [DOI: 10.1002/ejoc.201801385] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Iram Parveen
- Department of Chemistry Indian Institute of Technology Roorkee 247 667 Roorkee Uttarakhand India
| | - Danish Khan
- Department of Chemistry Indian Institute of Technology Roorkee 247 667 Roorkee Uttarakhand India
| | - Naseem Ahmed
- Department of Chemistry Indian Institute of Technology Roorkee 247 667 Roorkee Uttarakhand India
| |
Collapse
|
12
|
Ohmori K. Synthetic Studies on Flavan-Derived Natural Polyphenols: a Complex Molecular Platform in Organic Synthesis. J SYN ORG CHEM JPN 2018. [DOI: 10.5059/yukigoseikyokaishi.76.1154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Ken Ohmori
- Department of Chemistry, Tokyo Institute of Technology
| |
Collapse
|
13
|
Liu X, Astruc D. Development of the Applications of Palladium on Charcoal in Organic Synthesis. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800343] [Citation(s) in RCA: 69] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Xiang Liu
- College of Materials and Chemical Engineering, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials; China Three Gorges University, Yichang; Hubei 443002 People's Republic of China
| | - Didier Astruc
- ISM, UMR CNRS 5255; Université de Bordeaux; 351 Cours de la Libération 33405 Talence Cedex France
| |
Collapse
|
14
|
Zhao Y, Snieckus V. Amide-Directed Ru-Catalyzed Hydrodemethoxylation of ortho-Methoxy-Benzamides and -Naphthamides: A DoM Reaction Counterpart. Org Lett 2018; 20:2826-2830. [DOI: 10.1021/acs.orglett.8b00755] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yigang Zhao
- Department of Chemistry, Queen’s University, 90 Bader Lane, Kingston, ON K7L 3N6, Canada
| | - Victor Snieckus
- Department of Chemistry, Queen’s University, 90 Bader Lane, Kingston, ON K7L 3N6, Canada
| |
Collapse
|
15
|
Kostenko EA, Eliseenkov EV, Petrov AA. Regularities of Pd/C-catalyzed reduction of trichlorobiphenyls with 2-propanol in basic medium. RUSS J GEN CHEM+ 2017. [DOI: 10.1134/s1070363217080023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
16
|
Youssef TE, Mohamed HH. A simple and effective approach for catalytic reductive dechlorination of aromatic compounds. CAN J CHEM 2017. [DOI: 10.1139/cjc-2016-0567] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
An efficient process for the preparation of 2(3),9(10),16(17),23(24)-octa(n-hexyl)cobalt(II)phthalocyanine, ((n-hexyl)8CoPc) (2) was described. The novel cobalt(II)phthalocyanine was characterized by spectroscopic methods. It was employed as a catalyst for the room temperature reductive dechlorination of chlorinated aromatic compounds (CACs). The results were showed that the CACs were completely dechlorinated within 110–120 min.
Collapse
Affiliation(s)
- Tamer E. Youssef
- Department of Chemistry, College of Science, University of Dammam, P.O. Box 1982, Dammam 31441, Saudi Arabia
- Applied Organic Chemistry Department, National Research Centre, Dokki, Cairo 12622, Egypt
| | - Hanan H. Mohamed
- Chemistry Department, Faculty of Science, Helwan University, Ain Helwan, Cairo, Egypt
| |
Collapse
|
17
|
Concise synthesis of several oligostilbenes from the enzyme-promoted oxidation of brominated resveratrol. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.04.021] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
18
|
Yamamoto Y, Nogi K, Yorimitsu H, Osuka A. Base-Free Palladium-Catalyzed Hydrodechlorination of Aryl Chlorides with Pinacol Borane. ChemistrySelect 2017. [DOI: 10.1002/slct.201700189] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Yutaro Yamamoto
- Department of Chemistry; Graduate School of Science; Kyoto University, Sakyo-ku; Kyoto 606-8502 Japan
| | - Keisuke Nogi
- Department of Chemistry; Graduate School of Science; Kyoto University, Sakyo-ku; Kyoto 606-8502 Japan
| | - Hideki Yorimitsu
- Department of Chemistry; Graduate School of Science; Kyoto University, Sakyo-ku; Kyoto 606-8502 Japan
| | - Atsuhiro Osuka
- Department of Chemistry; Graduate School of Science; Kyoto University, Sakyo-ku; Kyoto 606-8502 Japan
| |
Collapse
|
19
|
You T, Wang Z, Chen J, Xia Y. Transfer Hydro-dehalogenation of Organic Halides Catalyzed by Ruthenium(II) Complex. J Org Chem 2017; 82:1340-1346. [DOI: 10.1021/acs.joc.6b02222] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Tingjie You
- College of Chemistry and
Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Zhenrong Wang
- College of Chemistry and
Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Jiajia Chen
- College of Chemistry and
Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Yuanzhi Xia
- College of Chemistry and
Materials Engineering, Wenzhou University, Wenzhou 325035, China
| |
Collapse
|
20
|
Rossi R, Lessi M, Manzini C, Marianetti G, Bellina F. Achievement of regioselectivity in transition metal-catalyzed direct C–H (hetero)arylation reactions of heteroarenes with one heteroatom through the use of removable protecting/blocking substituents or traceless directing groups. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.02.037] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
|
21
|
Yi YQQ, Yang WC, Zhai DD, Zhang XY, Li SQ, Guan BT. Nickel-catalyzed C–N bond reduction of aromatic and benzylic quaternary ammonium triflates. Chem Commun (Camb) 2016; 52:10894-7. [DOI: 10.1039/c6cc04531f] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A nickel-catalyzed, efficient C–N bond reduction of aromatic and benzylic ammonium triflates has been developed using sodium isopropoxide as a reducing agent.
Collapse
Affiliation(s)
- Yuan-Qiu-Qiang Yi
- State Key Laboratory and Institute of Elemento-Organic Chemistry
- Collaborative Innovation Center of Chemical Science and Engineering
- Nankai University
- Tianjin
- China
| | - Wen-Cheng Yang
- State Key Laboratory and Institute of Elemento-Organic Chemistry
- Collaborative Innovation Center of Chemical Science and Engineering
- Nankai University
- Tianjin
- China
| | - Dan-Dan Zhai
- State Key Laboratory and Institute of Elemento-Organic Chemistry
- Collaborative Innovation Center of Chemical Science and Engineering
- Nankai University
- Tianjin
- China
| | - Xiang-Yu Zhang
- State Key Laboratory and Institute of Elemento-Organic Chemistry
- Collaborative Innovation Center of Chemical Science and Engineering
- Nankai University
- Tianjin
- China
| | - Shuai-Qi Li
- State Key Laboratory and Institute of Elemento-Organic Chemistry
- Collaborative Innovation Center of Chemical Science and Engineering
- Nankai University
- Tianjin
- China
| | - Bing-Tao Guan
- State Key Laboratory and Institute of Elemento-Organic Chemistry
- Collaborative Innovation Center of Chemical Science and Engineering
- Nankai University
- Tianjin
- China
| |
Collapse
|
22
|
Ido A, Niikawa M, Ishihara S, Sawama Y, Nakanishi T, Monguchi Y, Sajiki H, Nagase H. Practical remediation of the PCB-contaminated soils. JOURNAL OF ENVIRONMENTAL HEALTH SCIENCE & ENGINEERING 2015; 13:9. [PMID: 25705434 PMCID: PMC4334768 DOI: 10.1186/s40201-015-0158-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/10/2013] [Accepted: 01/11/2015] [Indexed: 06/04/2023]
Abstract
A practical method for the elimination of PCBs from PCB-contaminated soil has been developed by the combination of Soxhlet extraction using a newly-developed modified Soxhlet extractor possessing an outlet valve on the extraction chamber with the chemical degradation. Various types of PCBs contaminated in soils could be completely extracted in refluxing hexane, and the subsequent hydrodechlorination could also be completed within 1 h in a hexane-MeOH (1 : 5) solution in the presence of Pd/C and Et3N under ordinary hydrogen pressure and temperature without the transfer of the extracted PCBs to other reaction container (a complete one-pot procedure). The present system is quite useful as a simple, safe, mild and reliable remediation method of PCB-contaminated soil.
Collapse
Affiliation(s)
- Akiko Ido
- />Laboratory of Hygienic Chemistry and Molecular Toxicology, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu, 501-1196 Japan
| | - Miki Niikawa
- />Laboratory of Hygienic Chemistry and Molecular Toxicology, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu, 501-1196 Japan
- />Laboratory of Organic Chemistry, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu, 501-1196 Japan
| | - Shinji Ishihara
- />Laboratory of Organic Chemistry, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu, 501-1196 Japan
| | - Yoshinari Sawama
- />Laboratory of Organic Chemistry, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu, 501-1196 Japan
| | - Tsuyoshi Nakanishi
- />Laboratory of Hygienic Chemistry and Molecular Toxicology, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu, 501-1196 Japan
| | - Yasunari Monguchi
- />Laboratory of Organic Chemistry, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu, 501-1196 Japan
| | - Hironao Sajiki
- />Laboratory of Organic Chemistry, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu, 501-1196 Japan
| | - Hisamitsu Nagase
- />Laboratory of Hygienic Chemistry and Molecular Toxicology, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu, 501-1196 Japan
| |
Collapse
|
23
|
Synthesis and in vitro evaluation of novel 8-aminoquinoline-pyrazolopyrimidine hybrids as potent antimalarial agents. Bioorg Med Chem Lett 2015; 25:1100-3. [PMID: 25650255 DOI: 10.1016/j.bmcl.2015.01.003] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2014] [Revised: 01/01/2015] [Accepted: 01/05/2015] [Indexed: 02/08/2023]
Abstract
In the search of novel chemotherapeutic agents for emerging drug resistant parasites, the hybridization approaches have successfully emerged as an efficient tool in malarial chemotherapy. Herein, a rational design and synthesis of novel 8-aminoquinoline and pyrazolopyrimidine hybrids and their antimalarial activity against wild type Plasmodium falciparum (Pf_NF54) and resistant strain (Pf_K1) is reported. The medicinal chemistry approach to expand the scope of this series resulted in an identification of potent compounds with nanomolar potency (best IC50 5-10nM). Systematic structure activity relationship (SAR) studies revealed that pyrazolopyrimidine and 8-aminoquinoline ring are essential for achieving good P. falciparum potency. The docking study revealed that the compound 6 can retain some of the critical interactions within pfDHODH drug target.
Collapse
|
24
|
Sajiki H, Monguchi Y, Sawama Y. Synthesis of Triazole, Indole, and Five or Six-Membered Saturated Heterocyclic Compounds. HETEROCYCLES 2015. [DOI: 10.3987/rev-14-811] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
25
|
Sajiki H, Monguchi Y, Ido A, Niikawa M, Nagatsu N, Mizukoshi R, Nagase H. Pd/C-Catalyzed Hydrodechlorination of Dioxins from Fly Ash under Ambient Pressure and Temperature. HETEROCYCLES 2015. [DOI: 10.3987/com-14-s(k)3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
26
|
Sawama Y, Imanishi T, Nakatani R, Fujiwara Y, Monguchi Y, Sajiki H. Efficient partial hydrogenation of trichloromethyl to gem-dichloromethyl groups in platinum on carbon-catalyzed system. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.04.098] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
27
|
Rossi R, Bellina F, Lessi M, Manzini C. Cross-Coupling of Heteroarenes by CH Functionalization: Recent Progress towards Direct Arylation and Heteroarylation Reactions Involving Heteroarenes Containing One Heteroatom. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201300922] [Citation(s) in RCA: 366] [Impact Index Per Article: 36.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
|
28
|
Esaki H, Hattori T, Tsubone A, Mibayashi S, Sakata T, Sawama Y, Monguchi Y, Yasuda H, Nosaka K, Sajiki H. Chemoselective Hydrogenation Catalyzed by Pd on Spherical Carbon. ChemCatChem 2013. [DOI: 10.1002/cctc.201300639] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
29
|
Pyo A, Kim S, Kumar MR, Byeun A, Eom MS, Han MS, Lee S. Palladium-catalyzed hydrodehalogenation of aryl halides using paraformaldehyde as the hydride source: high-throughput screening by paper-based colorimetric iodide sensor. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.07.071] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
30
|
Manthorpe DP, Lockley WJS. Digitally enhanced thin layer chromatography: further development and some applications in isotopic chemistry. J Labelled Comp Radiopharm 2013; 56:544-52. [PMID: 24285186 DOI: 10.1002/jlcr.3052] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2013] [Revised: 03/22/2013] [Accepted: 03/22/2013] [Indexed: 11/08/2022]
Abstract
Improvements to thin layer chromatography (TLC) analysis can be made easily and cheaply by the application of digital colour photography and image analysis. The combined technique, digitally enhanced TLC (DE-TLC), is applicable to the accurate quantification of analytes in mixtures, to reaction monitoring and to other typical uses of TLC. Examples are given of the application of digitally enhanced TLC to: the deuteromethylations of theophylline to [methyl-(2)H3]caffeine and of umbelliferone to [(2)H3]7-methoxycoumarin; the selection of tertiary amine bases in deuterodechlorination reactions; stoichiometry optimisation in the borodeuteride reduction of quinizarin (1,4-dihydroxyanthraquinone) and to the assessment of xanthophyll yields in Lepidium sativum seedlings grown in deuterated media.
Collapse
Affiliation(s)
- Daniel P Manthorpe
- Department of Chemistry, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford, GU2 7XH, UK
| | | |
Collapse
|
31
|
Lockley WJS. Melvin Calvin award lecture, Isotopic chemistry: the most varied of careers…with tritium and deuterium the most versatile of the isotopes. J Labelled Comp Radiopharm 2013; 56:417-27. [DOI: 10.1002/jlcr.3045] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2013] [Revised: 03/01/2013] [Accepted: 03/01/2013] [Indexed: 11/09/2022]
Affiliation(s)
- William J. S. Lockley
- Department of Chemistry, Faculty of Engineering and Physical Sciences; University of Surrey; Guildford; GU2 7XH; UK
| |
Collapse
|
32
|
Weidauer M, Irran E, Someya CI, Haberberger M, Enthaler S. Nickel-catalyzed hydrodehalogenation of aryl halides. J Organomet Chem 2013. [DOI: 10.1016/j.jorganchem.2013.01.014] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
33
|
Watanabe G, Ohmori K, Suzuki K. First regiocontrolled synthesis of procyanidin B6, a catechin dimer with rare connectivity: a halo-capping strategy for formation of 4,6-interflavan bonds. Chem Commun (Camb) 2013; 49:5210-2. [DOI: 10.1039/c3cc41993b] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
34
|
Ido A, Ishihara S, Kume A, Nakanishi T, Monguchi Y, Sajiki H, Nagase H. Practical method for PCB degradation using Pd/C-H2-Mg system. CHEMOSPHERE 2013; 90:57-64. [PMID: 22939897 DOI: 10.1016/j.chemosphere.2012.06.074] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2011] [Revised: 04/10/2012] [Accepted: 06/30/2012] [Indexed: 05/10/2023]
Abstract
Polychlorinated biphenyls (PCBs) were mainly used as lubricants and coolants in electrical equipment. However, their chemical stabilities as well as hydrophobic properties caused persistent environmental pollution and damage to human health based on their bioaccumulative property. PCBs are currently targeted for worldwide elimination and should be disposed by 2028 based on the Stockholm Convention on Persistent Organic Pollutants. The conventional PCB degradation methods require high-heat, high-pressure or/and strongly basic conditions. The development of a safer and more practical method, therefore, is desired. We have reported a catalytic degradation method of PCBs based on a palladium on carbon (Pd/C)-catalyzed dechlorination in the presence of Et(3)N under ambient hydrogen pressure and temperature. In this study, we demonstrate a more practical system using magnesium metal instead of Et(3)N for the dechlorination of a variety of aromatic chlorides. The method was applicable for the complete degradation of a variety of PCB mixtures, such as Aroclor 1242, 1248, 1254 and PCBs removed from a capacitor to produce only biphenyl and magnesium chloride as the maritime component, both of which are less toxic and easily separable. Moreover, the Pd/C could be recovered and reused at least five times without any loss of catalytic activity. The present Pd/C-Mg-H(2) system is a simple, safe, inexpensive, and environmentally-benign degradation method of PCBs.
Collapse
Affiliation(s)
- Akiko Ido
- Laboratory of Hygienic Chemistry and Molecular Toxicology, Department of Biopharmaceutical Sciences, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu 501-1196, Japan
| | | | | | | | | | | | | |
Collapse
|
35
|
Patra AK, Dutta A, Bhaumik A. Highly ordered mesoporous TiO2-Fe2O3 mixed oxide synthesized by sol-gel pathway: an efficient and reusable heterogeneous catalyst for dehalogenation reaction. ACS APPLIED MATERIALS & INTERFACES 2012; 4:5022-5028. [PMID: 22939382 DOI: 10.1021/am301394u] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Highly ordered two-dimensional (2D) hexagonal TiO(2)-Fe(2)O(3) mixed-oxide material MFT-1, which is composed of very tiny nanoparticles, is synthesized using sodium dodecylsulfate (SDS) as a structure-directing agent. Interestingly, synthesis of an ordered mesophase was not possible using SDS as a template for mesoporous pure Fe(2)O(3) or TiO(2) phases. This mesoporous iron-titanium mixed-oxide material has been characterized by powder X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM), high-resolution transmission electron microscopy (HRTEM), N(2) sorption, ultraviolet-visible light diffuse reflectance spectroscopy (UV-vis DRS) studies. N(2) sorption analysis revealed high surface areas (126-385 m(2) g(-1)) and narrow pore size distributions (3.1-3.4 nm) for different samples. UV-vis DRS spectra and wide-angle powder XRD patterns indicate that the material is composed of α-Fe(2)O(3) and anatase TiO(2) phases. This TiO(2)-Fe(2)O(3) mixed-oxide material can act as a very efficient and reusable catalyst in the dehalogenation of aromatic chloride-, bromide-, and iodide-tolerating -F, -CN, -CH(3), -OCH(3) and -NO(2) functional groups in the aromatic ring using 2-propanol as the dispersion medium.
Collapse
Affiliation(s)
- Astam K Patra
- Department of Materials Science, Indian Association for the Cultivation of Science, Jadavpur, Kolkata-700032, India
| | | | | |
Collapse
|
36
|
Ishihara S, Ido A, Monguchi Y, Nagase H, Sajiki H. Pd/C-catalyzed dechlorination of polychlorinated biphenyls under hydrogen gas-free conditions. JOURNAL OF HAZARDOUS MATERIALS 2012; 229-230:15-9. [PMID: 22738771 DOI: 10.1016/j.jhazmat.2012.05.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2012] [Revised: 04/18/2012] [Accepted: 05/02/2012] [Indexed: 05/10/2023]
Abstract
The simultaneous use of catalytic amount of palladium on carbon (Pd/C) and Mg metal (1.5-2.0 equiv vs. Cl numbers of the substrates) in MeOH achieved the complete dechlorination of a variety of aryl chlorides at room temperature under a nitrogen atmosphere in the absence of hydrogen gas. The present method could be successfully used for the detoxification of PCBs based on the dechlorination reaction. Both virgin PCBs, such as Aroclors 1242, 1248 and 1254, and used PCBs as a high-tension capacitor oil, were smoothly dechlorinated into harmless biphenyl without any byproducts within 2h at rt. The distinctive features of this method are convenience and safety due to no needs for the pretreatment of catalyst and Mg and complete degradation of PCBs under mild conditions without hydrogen gas.
Collapse
Affiliation(s)
- Shinji Ishihara
- Laboratory of Organic Chemistry, Gifu Pharmaceutical University, 1-25-1 Daigaku-nishi, Gifu 501-1196, Japan
| | | | | | | | | |
Collapse
|
37
|
Huang Y, Liu S, Lin Z, Li W, Li X, Cao R. Facile synthesis of palladium nanoparticles encapsulated in amine-functionalized mesoporous metal–organic frameworks and catalytic for dehalogenation of aryl chlorides. J Catal 2012. [DOI: 10.1016/j.jcat.2012.05.003] [Citation(s) in RCA: 120] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
38
|
Wu BZ, Chen HY, Wang SJ, Wai CM, Liao W, Chiu K. Reductive dechlorination for remediation of polychlorinated biphenyls. CHEMOSPHERE 2012; 88:757-768. [PMID: 22572168 DOI: 10.1016/j.chemosphere.2012.03.056] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2011] [Revised: 03/06/2012] [Accepted: 03/18/2012] [Indexed: 05/31/2023]
Abstract
Technologies such as thermal, oxidative, reductive, and microbial methods for the remediation of polychlorinated biphenyls (PCBs) have previously been reviewed. Based on energy consumption, formation of PCDD/F, and remediation efficiency, reductive methods have emerged as being advantageous for remediation of PCBs. However, many new developments in this field have not been systematically reviewed. Therefore, reductive technologies published in the last decade related to remediation of PCBs will be reviewed here. Three categories, including catalytic hydrodechlorination with H(2), Fe-based reductive dechlorination, and other reductive dechlorination methods (e.g., hydrogen-transfer dechlorination, base-catalyzed dechlorination, and sodium dispersion) are specifically reviewed. In addition, the advantages of each remediation technology are discussed. In this review, 108 articles are referenced.
Collapse
Affiliation(s)
- Ben-Zen Wu
- Department of Chemistry, National Dong Hwa University, Hualien 97401, Taiwan, ROC
| | | | | | | | | | | |
Collapse
|
39
|
Yabe Y, Yamada T, Nagata S, Sawama Y, Monguchi Y, Sajiki H. Development of a Palladium on Boron Nitride Catalyst and its Application to the Semihydrogenation of Alkynes. Adv Synth Catal 2012. [DOI: 10.1002/adsc.201100936] [Citation(s) in RCA: 81] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
40
|
Platinum on Carbon-Catalyzed Hydrodefluorination of Fluoroarenes using Isopropyl Alcohol-Water-Sodium Carbonate Combination. Adv Synth Catal 2012. [DOI: 10.1002/adsc.201100927] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
41
|
Imanishi T, Fujiwara Y, Sawama Y, Monguchi Y, Sajiki H. Platinum on Carbon-Catalyzed Precise Reduction Control of Trichloromethyl to Geminal-Dichloromethyl Groups. Adv Synth Catal 2012. [DOI: 10.1002/adsc.201100778] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
42
|
Fujioka M, Morimoto T, Tsumagari T, Tanimoto H, Nishiyama Y, Kakiuchi K. Rh(I)-Catalyzed Asymmetric Synthesis of 3-Substituted Isoindolinones through CO Gas-Free Aminocarbonylation. J Org Chem 2012; 77:2911-23. [DOI: 10.1021/jo300201g] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Masahiko Fujioka
- Graduate
School of Materials Science, Nara Institute of Science and Technology (NAIST), Ikoma,
Nara 630-0192, Japan
| | - Tsumoru Morimoto
- Graduate
School of Materials Science, Nara Institute of Science and Technology (NAIST), Ikoma,
Nara 630-0192, Japan
| | - Takayuki Tsumagari
- Graduate
School of Materials Science, Nara Institute of Science and Technology (NAIST), Ikoma,
Nara 630-0192, Japan
| | - Hiroki Tanimoto
- Graduate
School of Materials Science, Nara Institute of Science and Technology (NAIST), Ikoma,
Nara 630-0192, Japan
| | - Yasuhiro Nishiyama
- Graduate
School of Materials Science, Nara Institute of Science and Technology (NAIST), Ikoma,
Nara 630-0192, Japan
| | - Kiyomi Kakiuchi
- Graduate
School of Materials Science, Nara Institute of Science and Technology (NAIST), Ikoma,
Nara 630-0192, Japan
| |
Collapse
|
43
|
Monguchi Y, Fujita Y, Hashimoto S, Ina M, Takahashi T, Ito R, Nozaki K, Maegawa T, Sajiki H. Palladium on carbon-catalyzed solvent-free and solid-phase hydrogenation and Suzuki–Miyaura reaction. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.09.043] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
44
|
|
45
|
Chang F, Kim HW, Lee BN, Park HG, Park JW. Pd-catalyzed Dehalogenation of Aromatic Halides Under Solvent-free Conditions Using Hydrogen Balloon. B KOREAN CHEM SOC 2011. [DOI: 10.5012/bkcs.2011.32.3.1074] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
46
|
Jin Z, Yu C, Wang X, Wan Y, Li D, Lu G. Liquid phase hydrodechlorination of chlorophenols at lower temperature on a novel Pd catalyst. JOURNAL OF HAZARDOUS MATERIALS 2011; 186:1726-1732. [PMID: 21239107 DOI: 10.1016/j.jhazmat.2010.12.058] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2010] [Revised: 12/13/2010] [Accepted: 12/14/2010] [Indexed: 05/30/2023]
Abstract
Pd catalyst supported on mesoporous silica-carbon nano-composite (Pd/MSCN) was prepared by the method of wet impregnation, and its activity for hydrodechlorination (HDC) of 2-chlorophenol, 4-chlorophenol and 2,4-dichlorophenol was evaluated at 258-313 K under ordinary hydrogen pressure by using triethylamine (Et(3)N) as a base additive. XRD analysis indicates that Pd/MSCN catalyst possesses the ordered mesostructure. Meanwhile, the results from TEM and H(2) chemisorption analysis indicate the high dispersion of Pd on MSCN with Pd nanoparticles whose average size is 3.2 nm. For the first time, the high activity of nano-size Pd on MSCN for HDC of chlorophenols was observed at 258 K. In addition, it was found that the inhibition effect of Et(3)N on HDC existed obviously, and can be efficiently reduced by stepwise addition of Et(3)N. The correlations of the dielectric constants of base and the polarity of solvent to the activity of Pd/MSCN for HDC of chlorophenols were obtained.
Collapse
Affiliation(s)
- Zhonghao Jin
- Laboratory for Advanced Materials, Research Institute of Industrial Catalysis, East China University of Science and Technology, Shanghai 200237, China
| | | | | | | | | | | |
Collapse
|
47
|
Szőllősi G, Hermán B, Szabados E, Fülöp F, Bartók M. Reactions of chlorine substituted (E)-2,3-diphenylpropenoic acids over cinchonidine-modified Pd: Enantioselective hydrogenation versus hydrodechlorination. ACTA ACUST UNITED AC 2010. [DOI: 10.1016/j.molcata.2010.09.013] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
48
|
Monguchi Y, Ishihara S, Ido A, Niikawa M, Kamiya K, Sawama Y, Nagase H, Sajiki H. Pilot-Plant Study of the PCB Degradation at Ambient Temperature and Pressure. Org Process Res Dev 2010. [DOI: 10.1021/op100107r] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yasunari Monguchi
- Laboratory of Organic Chemistry, Department of Organic and Medicinal Chemistry, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu 501-1196, Japan, Laboratory of Hygienic Chemistry and Molecular Toxicology, Department of Biopharmaceutical Sciences, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu 501-1196, Japan, and Ogaki Plant Sangyou, 3-38-1 Mangoku, Ogaki-shi, Gifu 503-0812, Japan
| | - Shinji Ishihara
- Laboratory of Organic Chemistry, Department of Organic and Medicinal Chemistry, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu 501-1196, Japan, Laboratory of Hygienic Chemistry and Molecular Toxicology, Department of Biopharmaceutical Sciences, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu 501-1196, Japan, and Ogaki Plant Sangyou, 3-38-1 Mangoku, Ogaki-shi, Gifu 503-0812, Japan
| | - Akiko Ido
- Laboratory of Organic Chemistry, Department of Organic and Medicinal Chemistry, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu 501-1196, Japan, Laboratory of Hygienic Chemistry and Molecular Toxicology, Department of Biopharmaceutical Sciences, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu 501-1196, Japan, and Ogaki Plant Sangyou, 3-38-1 Mangoku, Ogaki-shi, Gifu 503-0812, Japan
| | - Miki Niikawa
- Laboratory of Organic Chemistry, Department of Organic and Medicinal Chemistry, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu 501-1196, Japan, Laboratory of Hygienic Chemistry and Molecular Toxicology, Department of Biopharmaceutical Sciences, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu 501-1196, Japan, and Ogaki Plant Sangyou, 3-38-1 Mangoku, Ogaki-shi, Gifu 503-0812, Japan
| | - Koichi Kamiya
- Laboratory of Organic Chemistry, Department of Organic and Medicinal Chemistry, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu 501-1196, Japan, Laboratory of Hygienic Chemistry and Molecular Toxicology, Department of Biopharmaceutical Sciences, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu 501-1196, Japan, and Ogaki Plant Sangyou, 3-38-1 Mangoku, Ogaki-shi, Gifu 503-0812, Japan
| | - Yoshinari Sawama
- Laboratory of Organic Chemistry, Department of Organic and Medicinal Chemistry, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu 501-1196, Japan, Laboratory of Hygienic Chemistry and Molecular Toxicology, Department of Biopharmaceutical Sciences, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu 501-1196, Japan, and Ogaki Plant Sangyou, 3-38-1 Mangoku, Ogaki-shi, Gifu 503-0812, Japan
| | - Hisamitsu Nagase
- Laboratory of Organic Chemistry, Department of Organic and Medicinal Chemistry, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu 501-1196, Japan, Laboratory of Hygienic Chemistry and Molecular Toxicology, Department of Biopharmaceutical Sciences, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu 501-1196, Japan, and Ogaki Plant Sangyou, 3-38-1 Mangoku, Ogaki-shi, Gifu 503-0812, Japan
| | - Hironao Sajiki
- Laboratory of Organic Chemistry, Department of Organic and Medicinal Chemistry, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu 501-1196, Japan, Laboratory of Hygienic Chemistry and Molecular Toxicology, Department of Biopharmaceutical Sciences, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu 501-1196, Japan, and Ogaki Plant Sangyou, 3-38-1 Mangoku, Ogaki-shi, Gifu 503-0812, Japan
| |
Collapse
|
49
|
Liégault B, Petrov I, Gorelsky SI, Fagnou K. Modulating reactivity and diverting selectivity in palladium-catalyzed heteroaromatic direct arylation through the use of a chloride activating/blocking group. J Org Chem 2010; 75:1047-60. [PMID: 20073523 DOI: 10.1021/jo902515z] [Citation(s) in RCA: 256] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Through the introduction of an aryl chloride substituent, the selectivity of palladium-catalyzed direct arylation may be diverted to provide alternative regioisomeric products in high yields. In cases where low reactivity is typically observed, the presence of the carbon-chlorine bond can serve to enhance reactivity and provide superior outcomes. From a strategic perspective, the C-Cl bond is easily introduced and can be employed in a variety of subsequent transformations to provide a wealth of highly functionalized heterocycles with minimal substrate preactivation. The impact of the C-Cl functional group on direct arylation reactivity has also been evaluated mechanistically, and the observed reactivity profiles correlate very well with that predicted by a concerted metalation-deprotonation pathway.
Collapse
Affiliation(s)
- Benoît Liégault
- Centre for Catalysis Research & Innovation, Department of Chemistry, University of Ottawa, 10 Marie Curie, Ottawa, Ontario K1N 6N5, Canada.
| | | | | | | |
Collapse
|
50
|
Riveira MJ, La-Venia A, Mischne MP. Advances in bridged 1,2,4-trioxane-based chemistry. A divergent approach to oxa-heterocycles based on ambident reactivity. Tetrahedron Lett 2010. [DOI: 10.1016/j.tetlet.2009.11.135] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|