1
|
Clausen KU, Pienack N, Gripp J, Tuczek F. Oxidative Decarbonylation of an Azacalixpyridine-Supported Mo(0)-Tricarbonyl to a Mo(VI)-Trioxo Complex with Dioxygen in Solution and on Au(111): Determination of Molecular Mechanism. Chemistry 2024; 30:e202304359. [PMID: 38305666 DOI: 10.1002/chem.202304359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Revised: 01/31/2024] [Accepted: 01/31/2024] [Indexed: 02/03/2024]
Abstract
The conversion of an azacalixpyridine-supported Mo(0) tricarbonyl into a Mo(VI) trioxo complex with dioxygen (O2) is investigated in homogeneous solution and in a molecular film adsorbed on Au(111) using a variety of spectroscopic and analytical methods. These studies in particular show that the dome-shaped carbonyl complex adsorbed on the metal surface has the ability to bind and activate gaseous oxygen, overcoming the so-called surface trans-effect. Furthermore, the rate of the conversion dramatically increases by irradiation with light. This observation is explained with the help of complementary DFT calculations and attributed to two different pathways, a thermal and a photochemical one. Based on the experimental and theoretical findings, a molecular mechanism for the conversion of the carbonyl to the oxo complex is derived.
Collapse
Affiliation(s)
- Kai Uwe Clausen
- Institute of Inorganic Chemistry, Christian-Albrechts-University of Kiel, Max-Eyth Straße 2, 24118, Kiel, Germany
| | - Nicole Pienack
- Institute of Inorganic Chemistry, Christian-Albrechts-University of Kiel, Max-Eyth Straße 2, 24118, Kiel, Germany
| | - Joachim Gripp
- Institute of Physical Chemistry, Christian-Albrechts-University of Kiel, Max-Eyth Straße 1, 24118, Kiel, Germany
| | - Felix Tuczek
- Institute of Inorganic Chemistry, Christian-Albrechts-University of Kiel, Max-Eyth Straße 2, 24118, Kiel, Germany
| |
Collapse
|
2
|
Das N, Paul R, Tomar S, Biswas C, Chakraborty S, Mondal J. Catching an Oxo Vanadate Porous Acetylacetonate Covalent Adaptive Catalytic Network that Renders Mustard-Gas Simulant Harmless. Inorg Chem 2024; 63:6092-6102. [PMID: 38507817 DOI: 10.1021/acs.inorgchem.4c00519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/22/2024]
Abstract
In this work, we illustrated the design and development of a metal-coordinated porous organic polymer (POP) namely VO@TPA-POP via a post-synthetic metalation strategy to incorporate oxo-vanadium sites in a pristine polymer (TPA-POP) having acetylacetonate (acac) as anchoring moiety. The as-synthesized VO@TPA-POP exhibited highly robust and porous framework, which has been utilized for thioanisole (TA) oxidation to its corresponding sulfoxide. The catalyst demonstrated notable stability and recyclability by maintaining its catalytic activity over multiple reaction cycles without any significant loss in activity. The X-ray absorption spectroscopy (XAS) and density functional theory (DFT) analysis establish the existence of V(+4) oxidation state along with the VO(O)4 active sites into the porous network and the most energetically feasible mechanistic pathway involved in the TA oxidation, respectively, indicating the role of electron density associated with vanadium center during the catalytic transformation. Thus, this work aims at the demonstration of versatility and potential of VO@TPA-POP as a porous heterogeneous catalyst for the TA oxidation followed by decontamination of sulfur mustards (HD's) to their corresponding less toxic sulfoxides in a more efficient and greener way.
Collapse
Affiliation(s)
- Nitumani Das
- Department of Catalysis & Fine Chemicals, CSIR-Indian Institute of Chemical Technology, Uppal Road, Hyderabad, 500007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Ratul Paul
- Department of Catalysis & Fine Chemicals, CSIR-Indian Institute of Chemical Technology, Uppal Road, Hyderabad, 500007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Shalini Tomar
- Materials Theory for Energy Scavenging (MATES) Lab, Harish-Chandra Research Institute (HRI) Allahabad, A C.I. of Homi Bhabha National Institute (HBNI), Chhatnag Road, Jhunsi, Prayagraj (Allahabad), U.P. 211019, India
| | - Chandan Biswas
- Department of Catalysis & Fine Chemicals, CSIR-Indian Institute of Chemical Technology, Uppal Road, Hyderabad, 500007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Sudip Chakraborty
- Materials Theory for Energy Scavenging (MATES) Lab, Harish-Chandra Research Institute (HRI) Allahabad, A C.I. of Homi Bhabha National Institute (HBNI), Chhatnag Road, Jhunsi, Prayagraj (Allahabad), U.P. 211019, India
| | - John Mondal
- Department of Catalysis & Fine Chemicals, CSIR-Indian Institute of Chemical Technology, Uppal Road, Hyderabad, 500007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| |
Collapse
|
3
|
Lueckheide MJ, Ertem MZ, Michon MA, Chmielniak P, Robinson JR. Peroxide-Selective Reduction of O 2 at Redox-Inactive Rare-Earth(III) Triflates Generates an Ambiphilic Peroxide. J Am Chem Soc 2022; 144:17295-17306. [PMID: 36083877 DOI: 10.1021/jacs.2c08140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Metal peroxides are key species involved in a range of critical biological and synthetic processes. Rare-earth (group III and the lanthanides; Sc, Y, La-Lu) peroxides have been implicated as reactive intermediates in catalysis; however, reactivity studies of isolated, structurally characterized rare-earth peroxides have been limited. Herein, we report the peroxide-selective (93-99% O22-) reduction of dioxygen (O2) at redox-inactive rare-earth triflates in methanol using a mild metallocene reductant, decamethylferrocene (Fc*). The first molecular praseodymium peroxide ([PrIII2(O22-)(18C6)2(EG)2][OTf]4; 18C6 = 18-crown-6, EG = ethylene glycol, -OTf = -O3SCF3; 2-Pr) was isolated and characterized by single-crystal X-ray diffraction, Raman spectroscopy, and NMR spectroscopy. 2-Pr displays high thermal stability (120 °C, 50 mTorr), is protonated by mild organic acids [pKa1(MeOH) = 5.09 ± 0.23], and engages in electrophilic (e.g., oxygen atom transfer) and nucleophilic (e.g., phosphate-ester cleavage) reactivity. Our mechanistic studies reveal that the rate of oxygen reduction is dictated by metal-ion accessibility, rather than Lewis acidity, and suggest new opportunities for differentiated reactivity of redox-inactive metal ions by leveraging weak metal-ligand binding events preceding electron transfer.
Collapse
Affiliation(s)
- Matthew J Lueckheide
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States
| | - Mehmed Z Ertem
- Chemistry Division, Energy & Photon Sciences, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Michael A Michon
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States
| | - Pawel Chmielniak
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States
| | - Jerome R Robinson
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States
| |
Collapse
|
4
|
Sławińska A, Tyszka-Czochara M, Serda P, Oszajca M, Ruggiero-Mikołajczyk M, Pamin K, Napruszewska BD, Prochownik E, Łasocha W. New Organic-Inorganic Hybrid Compounds Based on Sodium Peroxidomolybdates (VI) and Derivatives of Pyridine Acids: Structure Determination and Catalytic Properties. MATERIALS (BASEL, SWITZERLAND) 2022; 15:5976. [PMID: 36079356 PMCID: PMC9457328 DOI: 10.3390/ma15175976] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Revised: 08/24/2022] [Accepted: 08/26/2022] [Indexed: 06/15/2023]
Abstract
Two organic-inorganic hybrids based on sodium peroxidomolybdates(VI) and 3,5-dicarboxylic pyridine acid (Na-35dcpa) or N-oxide isonicotinic acid (Na-isoO) have been synthesized and characterized. All compounds contain inorganic parts: a pentagonal bipyramid with molybdenum center, and an organic part containing 3,5-dicarboxylic pyridine acid or N-oxide isonicotinic acid moieties. The type of organic part used in the synthesis influences the crystal structure of obtained compounds. This aspect can be interesting for crystal engineering. Crystal structures were determined using powder X-ray diffraction or single crystal diffraction for compounds Na-35dcpa and Na-isoO, respectively. Elemental analysis was used to check the purity of the obtained compounds, while X-ray Powder Diffraction (XRPD) vs. temp. was applied to verify their stability. Moreover, all the compounds were examined by Infrared (IR) spectroscopy. Their catalytic activity was tested in the Baeyer-Villiger (BV) oxidation of cyclohexanone to ε-caprolactone in the oxygen-aldehyde system. The highest catalytic activity in the BV oxidation was observed for Na-35dcpa. The compounds were also tested for biological activity on human normal cells (fibroblasts) and colon cancer cell lines (HT-29, LoVo, SW 620, HCT 116). All compounds were cytotoxic against tumor cells with metastatic characteristics, which makes them interesting and promising candidates for further investigations of specific anticancer mechanisms.
Collapse
Affiliation(s)
- Adrianna Sławińska
- Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek 8, 30-239 Krakow, Poland
| | | | - Paweł Serda
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland
| | - Marcin Oszajca
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland
| | - Małgorzata Ruggiero-Mikołajczyk
- Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek 8, 30-239 Krakow, Poland
| | - Katarzyna Pamin
- Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek 8, 30-239 Krakow, Poland
| | - Bogna D. Napruszewska
- Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek 8, 30-239 Krakow, Poland
| | - Ewelina Prochownik
- Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9, 30-688 Krakow, Poland
| | - Wiesław Łasocha
- Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek 8, 30-239 Krakow, Poland
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland
| |
Collapse
|
5
|
Pang M, Zhou X, Jin X, Zeng N, Zhao Q, Shao Z, Li H, Wang X, Zhang H, Li S, Wang D, Liu W, Liang C, Tan X, Wang D. Using molybdenum carbiding to induce digestion of carbon in H 2O 2: A sustainable approach to eliminate radioactivity for hazardous graphite waste inherited from nuclear enterprise. JOURNAL OF HAZARDOUS MATERIALS 2022; 429:128369. [PMID: 35236039 DOI: 10.1016/j.jhazmat.2022.128369] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2021] [Revised: 01/24/2022] [Accepted: 01/25/2022] [Indexed: 06/14/2023]
Abstract
To properly manage nuclear wastes is critical to sustainable utilization of nuclear power and environment health. Here, we show an innovative carbiding strategy for sustainable management of radioactive graphite through digestion of carbon in H2O2. The combined action of intermolecular oxidation of graphite by MoO3 and molybdenum carbiding demonstrates success in gasifying graphite and sequestrating uranium for a simulated uranium-contaminated graphite waste. The carbiding process plays a triple role: (1) converting graphite into atomic carbon digestible in H2O2, (2) generating oxalic ligands in the presence of H2O2 to favor U-precipitation, and (3) delivering oxalic ligands to coordinate to MoVI-oxo anionic species to improve sample batching capacity. We demonstrate > 99% of uranium to be sequestrated for the simulated waste with graphite matrix completely gasifying while no detectable U-migration occurred during operation. This method has further been extended to removal of surface carbon layers for graphite monolith and thus can be used to decontaminate monolithic graphite waste with emission of a minimal amount of secondary waste. We believe this work not only provides a sustainable approach to tackle the managing issue of heavily metal contaminated graphite waste, but also indicates a promising methodology toward surface decontamination for irradiated graphite in general.
Collapse
Affiliation(s)
- Min Pang
- Institute of Materials, China Academy of Engineering Physics, Mianyang 621907, Sichuan Province, PR China.
| | - Xiaoyan Zhou
- Institute of Materials, China Academy of Engineering Physics, Mianyang 621907, Sichuan Province, PR China
| | - Xinyu Jin
- Institute of Materials, China Academy of Engineering Physics, Mianyang 621907, Sichuan Province, PR China
| | - Ning Zeng
- Institute of Materials, China Academy of Engineering Physics, Mianyang 621907, Sichuan Province, PR China
| | - Qingkai Zhao
- Institute of Materials, China Academy of Engineering Physics, Mianyang 621907, Sichuan Province, PR China
| | - Zhengfeng Shao
- Institute of Materials, China Academy of Engineering Physics, Mianyang 621907, Sichuan Province, PR China
| | - Haibo Li
- Institute of Materials, China Academy of Engineering Physics, Mianyang 621907, Sichuan Province, PR China
| | - Xu Wang
- Institute of Materials, China Academy of Engineering Physics, Mianyang 621907, Sichuan Province, PR China
| | - Hao Zhang
- Institute of Materials, China Academy of Engineering Physics, Mianyang 621907, Sichuan Province, PR China
| | - Shun Li
- Institute of Materials, China Academy of Engineering Physics, Mianyang 621907, Sichuan Province, PR China
| | - Dongping Wang
- Institute of Materials, China Academy of Engineering Physics, Mianyang 621907, Sichuan Province, PR China
| | - Weidong Liu
- Institute of Materials, China Academy of Engineering Physics, Mianyang 621907, Sichuan Province, PR China
| | - Chuanhui Liang
- Institute of Materials, China Academy of Engineering Physics, Mianyang 621907, Sichuan Province, PR China
| | - Xinxin Tan
- Institute of Materials, China Academy of Engineering Physics, Mianyang 621907, Sichuan Province, PR China
| | - Dongwen Wang
- Institute of Materials, China Academy of Engineering Physics, Mianyang 621907, Sichuan Province, PR China
| |
Collapse
|
6
|
Das N, Bhattacharjee M, Boruah S, Chowdhury S, Dutta Purkayastha R. Some contribution to W(VI)-peroxo-chemistry: Synthesis, spectroscopic characterization, reactivity and DFT studies. J INDIAN CHEM SOC 2022. [DOI: 10.1016/j.jics.2021.100327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
|
7
|
Enhanced oxygen transfer over bifunctional Mo-based oxametallacycle catalyst for epoxidation of propylene. J Colloid Interface Sci 2021; 611:564-577. [PMID: 34971967 DOI: 10.1016/j.jcis.2021.12.092] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 12/13/2021] [Accepted: 12/14/2021] [Indexed: 12/17/2022]
Abstract
Activation of inert propylene to produce propylene oxide (PO) is critical, but still faces some challenges in realizing higher PO selectivity and productivity. Herein, a temperature-controlled phase transfer catalyst (MoOO·DMF) is prepared for the liquid-phase epoxidation of propylene with tert-butyl hydroperoxide (TBHP) as oxidant, which exhibit the selectivity of 90.6% and the productivity of 1286.42·h-1 for PO (catalyst/propylene = 0.77 mol‰). Some experimental factors (solvent types, reaction temperature, contact time, the dosage of catalyst, TBHP and substrate) were investigated, and the reaction kinetics and thermodynamics are discussed. MoOO·DMF has the characteristic of both homogeneous and heterogeneous catalysts, which can be dissolved in the solvent at higher temperatures and separated from the solvent after reaction by lowering the temperature. Importantly, MoOO·DMF has a wonderful epoxidation performance for many olefins (e.g., light olefins, linear α-olefins, cyclic olefins and others). The mechanisms are proved by in-situ FT-IR, ESR and HRMS spectrum to be the selective oxygen transfer from tert-butyl peroxide radical and the MoOO bridge in MoOO·DMF to propylene. Density functional theory (DFT) calculations show that the MoOO bridge in catalyst is the key role for the activation of both the OH bond in TBHP and the CC bond in propylene, thus enhanced the epoxidation of propylene.
Collapse
|
8
|
Zhang W, Wen P, Xia L, Chen J, Che J, Wang C, Ma B. Understanding the role of hydrogen peroxide in sulfuric acid system for leaching low-grade scheelite from the perspective of phase transformation and kinetics. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.119407] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
9
|
Chen W, Tan CH, Wang H, Ye X. Molybdenum/Tungsten-Based Heteropoly Salts in Oxidations. Chem Asian J 2021; 16:2753-2772. [PMID: 34286908 DOI: 10.1002/asia.202100686] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Revised: 07/13/2021] [Indexed: 11/12/2022]
Abstract
Oxidation represents one of the most important and practical chemical transformations for both organic synthesis, material science and pharmaceutical area. Among the existing strategies, molybdenum/tungsten-based heteropoly salts involved oxidations with low-cost and environmentally benign terminal oxidant and thus have attracted considerable attention in recent years. In this review, we have summarized the recent development of heteropoly salts utilized in oxidations, mainly the peroxomolybdates and peroxotungstates. We wish to highlight the progress made in the past 20 years of this field. Three categories are classified according to the aggregation state of metal oxides. Special attention is paid to the catalytically active peroxometalate species generated during the oxidation process. It is helpful to shed light on the common features that enable highly efficient and selective oxidations. We aim to inspire fellow chemists to explore more functional metalates for catalytic oxidations, especially asymmetric versions. Meanwhile, we attempt to understand the design principles for the discovery of more efficient, selective and economical catalytic systems.
Collapse
Affiliation(s)
- Wenchao Chen
- College of Pharmaceutical Science & Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, 18 Chaowang Road, Hangzhou, 310014, P. R. China
| | - Choon-Hong Tan
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore
| | - Hong Wang
- College of Pharmaceutical Science & Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, 18 Chaowang Road, Hangzhou, 310014, P. R. China.,Key Laboratory of Marine Fishery Resources Exploitment & Utilization of Zhejiang Province, Hangzhou, 310014, P. R. China
| | - Xinyi Ye
- College of Pharmaceutical Science & Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, 18 Chaowang Road, Hangzhou, 310014, P. R. China
| |
Collapse
|
10
|
Ma Z, Mahmudov KT, Aliyeva VA, Gurbanov AV, Guedes da Silva MFC, Pombeiro AJ. Peroxides in metal complex catalysis. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2021.213859] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
|
11
|
Liu M, Yu F, Yuan B, Xie C, Yu S. Oxidation of 1-propanol to propionic acid with hydrogen peroxide catalysed by heteropolyoxometalates. BMC Chem 2021; 15:23. [PMID: 33794972 PMCID: PMC8017713 DOI: 10.1186/s13065-021-00750-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Accepted: 03/24/2021] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Propionic acid as a very valuable chemical is in high demand, and it is industrially produced via the oxo-synthesis of ethylene or ethyl alcohol and via the oxidation of propionaldehyde with oxygen. It is urgent to discover a new preparation method for propionic acid via a green route. Recyclable amino-acid-based organic-inorganic heteropolyoxometalates were first used to high-efficiently catalyse the selective oxidation of 1-propanol to propionic acid with H2O2 as an oxidant. RESULT A series of amino-acid-based heteropoly catalysts using different types of amino acids and heteropoly acids were synthesized, and the experimental results showed proline-based heteropolyphosphatotungstate (ProH)3[PW12O40] exhibited excellent catalytic activity for the selective catalytic oxidation of 1-propanol to propionic acid owing to its high capacity as an oxygen transfer agent and suitable acidity. Under optimized reaction conditions, the conversion of 1-propanol and the selectivity of propionic acid reached 88% and 75%, respectively. Over four cycles, the conversion remained at >80%, and the selectivity was >60%. (ProH)3[PW12O40] was also used to catalyse the oxidations of 1-butanol, 1-pentanol, 1-hexanol, and benzyl alcohol. All the reactions had high conversions, with the corresponding acids being the primary oxidation product. CONCLUSIONS Proline-based heteropolyoxometalate (ProH)3[PW12O40] has been successfully used to catalyse the selective oxidation of primary alcohols to the corresponding carboxylic acids with H2O2 as the oxidant. The new developed catalytic oxidation system is mild, high-efficient, and reliable. This study provides a potential green route for the preparation propionic acid.
Collapse
Affiliation(s)
- Minxue Liu
- State Key Laboratory Base of Eco-Chemical Engineering, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao, 266042, China
| | - Fengli Yu
- State Key Laboratory Base of Eco-Chemical Engineering, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao, 266042, China.
| | - Bing Yuan
- State Key Laboratory Base of Eco-Chemical Engineering, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao, 266042, China
| | - Congxia Xie
- State Key Laboratory Base of Eco-Chemical Engineering, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao, 266042, China
| | - Shitao Yu
- College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao, 266042, China.
| |
Collapse
|
12
|
Zhang F, Zheng X, Wang C, Wang D, Xue X, Qing G. Synthesis of optically active chiral mesoporous molybdenum carbide film. J IND ENG CHEM 2021. [DOI: 10.1016/j.jiec.2020.11.023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
|
13
|
Monika, Yadav O, Chauhan H, Ansari A. Electronic structures, bonding, and spin state energetics of biomimetic mononuclear and bridged dinuclear iron complexes: a computational examination. Struct Chem 2021. [DOI: 10.1007/s11224-020-01690-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
14
|
Goura J, Sundar A, Bassil BS, Ćirić-Marjanović G, Bajuk-Bogdanović D, Kortz U. Peroxouranyl-Containing W 48 Wheel: Synthesis, Structure, and Detailed Infrared and Raman Spectroscopy Study. Inorg Chem 2020; 59:16789-16794. [PMID: 33215914 DOI: 10.1021/acs.inorgchem.0c02858] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report on the first example of a peroxouranium-containing {P8W48} wheel, [{(UO2)4(O2)4}2(P8W48O184)]40- (1), which was synthesized by a one-pot reaction of UO2(NO3)2·6H2O with the 48-tungsto-8-phosphate wheel [H7P8W48O184]33- and aqueous hydrogen peroxide in a pH 6 lithium acetate solution at 50 °C. Polyanion 1 comprises two tetrauranyl squares with side-on peroxo bridging ligands in the cavity of the {P8W48} wheel, and was isolated as the hydrated potassium-lithium salt K18Li22[{(UO2)4(O2)4}2(P8W48O184)]·133H2O (KLi-1), which was characterized in the solid state by single-crystal X-ray diffraction, as well as thermogravimetric and elemental analyses. A detailed Fourier transform infrared and Raman spectroscopy study was also performed.
Collapse
Affiliation(s)
- Joydeb Goura
- Department of Life Sciences and Chemistry, Jacobs University, Campus Ring 1, 28759 Bremen, Germany
| | - Anusree Sundar
- Department of Life Sciences and Chemistry, Jacobs University, Campus Ring 1, 28759 Bremen, Germany
| | - Bassem S Bassil
- Department of Life Sciences and Chemistry, Jacobs University, Campus Ring 1, 28759 Bremen, Germany.,Department of Chemistry, Faculty of Arts and Sciences, University of Balamand, P.O. Box 100, 1300 Tripoli, Lebanon
| | - Gordana Ćirić-Marjanović
- University of Belgrade-Faculty of Physical Chemistry, Studentski trg 12-16, 11158 Belgrade, Serbia
| | - Danica Bajuk-Bogdanović
- University of Belgrade-Faculty of Physical Chemistry, Studentski trg 12-16, 11158 Belgrade, Serbia
| | - Ulrich Kortz
- Department of Life Sciences and Chemistry, Jacobs University, Campus Ring 1, 28759 Bremen, Germany
| |
Collapse
|
15
|
Ionic Liquids Based on Oxidoperoxido-Molybdenum(VI) Complexes with a Chelating Picolinate Ligand for Catalytic Epoxidation. REACTIONS 2020. [DOI: 10.3390/reactions1020012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Ionic oxidoperoxido-molybdenum(VI) complexes of the type [Cat][MoO(O2)2(pic)], with pic = N,O-chelated picolinate ligand and Cat = monocation, were prepared in high yields (82–95%) from the precursor complex [H3O][MoO(O2)2(pic)] via [H]+ cation exchange for 1-ethyl-3-methylimidazolium [EMIM]+, 1-butyl-3-methylimidazolium [BMIM]+, 1-octyl-3-methylimidazolium [OMIM]+, N-cetylpyridinium [C16Py]+, and N-methyl-N,N,N-trioctylammonium [Aliquat]+. The structure and purity of the ionic compounds were assessed by 1H and 13C NMR, FT-IR, and elemental analysis (C, H, N), and the electrochemical properties were studied by differential pulse voltammetry (DPV) and cyclic voltammetry (CV). The [Cat][MoO(O2)2(pic)] compounds showed promising catalytic epoxidation activity based on the model reaction of cis-cyclooctene with tert-butyl hydroperoxide as oxidant. The type of cation influenced the physical state of the compound and the catalytic performance.
Collapse
|
16
|
Chen TY, Ho PH, Spyra CJ, Meyer F, Bill E, Ye S, Lee WZ. Ambiphilicity of a mononuclear cobalt(III) superoxo complex. Chem Commun (Camb) 2020; 56:14821-14824. [PMID: 33151205 DOI: 10.1039/d0cc05337f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Addition of HOTf to a mixture of CoIII(BDPP)(O2˙) (1, H2BDPP = 2,6-bis((2-(S)-diphenylhydroxylmethyl-1-pyrrolidinyl)methyl)pyridine) and Cp*2Fe produced H2O2 in high yield implying formation of CoIII(BDPP)(OOH) (3), and reaction of Sc(OTf)3 with the same mixture gave a peroxo-bridged CoIII/ScIII5. These findings demonstrate the ambiphilic property of CoIII-superoxo 1.
Collapse
Affiliation(s)
- Ting-Yi Chen
- Department of Chemistry, National Taiwan Normal University, Taipei 11677, Taiwan. and Universität Göttingen, Institut für Anorganische Chemie, D-37077 Göttingen, Germany.
| | - Po-Hsun Ho
- Department of Chemistry, National Taiwan Normal University, Taipei 11677, Taiwan.
| | - Can-Jerome Spyra
- Universität Göttingen, Institut für Anorganische Chemie, D-37077 Göttingen, Germany.
| | - Franc Meyer
- Universität Göttingen, Institut für Anorganische Chemie, D-37077 Göttingen, Germany.
| | - Eckhard Bill
- Max-Planck-Institut für Chemische Energiekonversion, Mülheim an der Ruhr D-45470, Germany.
| | - Shengfa Ye
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China. and Max-Planck-Institut für Kohlenforschung, Mülheim an der Ruhr, D-45470, Germany.
| | - Way-Zen Lee
- Department of Chemistry, National Taiwan Normal University, Taipei 11677, Taiwan. and Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| |
Collapse
|
17
|
Nayak M, Nayak P, Sahu K, Kar S. Synthesis, Characterization, and Application of Oxo-Molybdenum(V)-Corrolato Complexes in Epoxidation Reactions. J Org Chem 2020; 85:11654-11662. [PMID: 32808776 DOI: 10.1021/acs.joc.0c01146] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Sharpless et al. have described, while performing the molybdenum-catalyzed epoxidation reaction of olefins using alkyl hydroperoxides, that the molybdenum-oxo moiety is an active catalytic species. Thus, continuous efforts have been made to synthesize molybdenum-oxo complexes of different ligand environments. While plenty of such works on molybdenum porphyrins are reported in the literature, related molybdenum corroles are very less reported. The synthesis and characterization of two new oxo-molybdenum(V)-corrolato complexes are described herein. Both the complexes have been fully characterized by several spectroscopic techniques in conjunction with single-crystal X-ray diffraction analysis. The efficacy of the oxo-molybdenum(V)-corrolato complexes for the catalytic epoxidation reaction of olefins with the help of hydroperoxides has also been explored. The catalytic application of oxo-molybdenum(V)-corrolato complexes in the epoxidation reaction has not been reported earlier. A mechanism has been proposed to explain the experimental findings.
Collapse
Affiliation(s)
- Manisha Nayak
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Bhubaneswar 752050, India.,Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400094, India
| | - Panisha Nayak
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Bhubaneswar 752050, India.,Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400094, India
| | - Kasturi Sahu
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Bhubaneswar 752050, India.,Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400094, India
| | - Sanjib Kar
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Bhubaneswar 752050, India.,Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400094, India
| |
Collapse
|
18
|
Lin YH, Kutin Y, van Gastel M, Bill E, Schnegg A, Ye S, Lee WZ. A Manganese(IV)-Hydroperoxo Intermediate Generated by Protonation of the Corresponding Manganese(III)-Superoxo Complex. J Am Chem Soc 2020; 142:10255-10260. [PMID: 32412757 DOI: 10.1021/jacs.0c02756] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Earlier work revealed that metal-superoxo species primarily function as radicals and/or electrophiles. Herein, we present ambiphilicity of a MnIII-superoxo complex revealed by its proton- and metal-coupled electron-transfer processes. Specifically, a MnIV-hydroperoxo intermediate, [Mn(BDPBrP)(OOH)]+ (1, H2BDPBrP = 2,6-bis((2-(S)-di(4-bromo)phenylhydroxylmethyl-1-pyrrolidinyl)methyl)pyridine) was generated by treatment of a MnIII-superoxo complex, Mn(BDPBrP)(O2•) (2) with trifluoroacetic acid at -120 °C. Detailed insights into the electronic structure of 1 are obtained using resonance Raman and multi-frequency electron paramagnetic resonance spectroscopies coupled with density functional theory calculations. Similarly, the reaction of 2 with scandium(III) triflate was shown to give a Mn(IV)/Sc(III) bridging peroxo species, [Mn(BDPBrP)(OO)Sc(OTf)n](3-n)+ (4). Furthermore, it is found that deprotonation of 1 quantitatively regenerates 2, and that one-electron oxidation of the corresponding MnIII-hydroperoxo species, Mn(BDPBrP)(OOH) (3), also yields 1.
Collapse
Affiliation(s)
- Yen-Hao Lin
- Department of Chemistry, National Taiwan Normal University, Taipei 11677, Taiwan
| | - Yury Kutin
- Max-Planck-Institut für Chemische Energiekonversion, Mülheim an der Ruhr D-45470, Germany
| | - Maurice van Gastel
- Max-Planck-Institut für Kohlenforschung, Mülheim an der Ruhr D-45470, Germany
| | - Eckhard Bill
- Max-Planck-Institut für Chemische Energiekonversion, Mülheim an der Ruhr D-45470, Germany
| | - Alexander Schnegg
- Max-Planck-Institut für Chemische Energiekonversion, Mülheim an der Ruhr D-45470, Germany
| | - Shengfa Ye
- Max-Planck-Institut für Kohlenforschung, Mülheim an der Ruhr D-45470, Germany.,State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Way-Zen Lee
- Department of Chemistry, National Taiwan Normal University, Taipei 11677, Taiwan.,Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| |
Collapse
|
19
|
Zhang W, Chen Y, Che J, Wang C, Ma B. Green leaching of tungsten from synthetic scheelite with sulfuric acid-hydrogen peroxide solution to prepare tungstic acid. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2020.116752] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
20
|
Deng L, Dong X, An DL, Weng WZ, Zhou ZH. Gas Adsorption of Mixed-Valence Trinuclear Oxothiomolybdenum Glycolates. Inorg Chem 2020; 59:4874-4881. [DOI: 10.1021/acs.inorgchem.0c00118] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Lan Deng
- State Key Laboratory for Physical Chemistry of Solid Surfaces and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Xing Dong
- State Key Laboratory for Physical Chemistry of Solid Surfaces and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Dong-Li An
- State Key Laboratory for Physical Chemistry of Solid Surfaces and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Wei-Zheng Weng
- State Key Laboratory for Physical Chemistry of Solid Surfaces and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Zhao-Hui Zhou
- State Key Laboratory for Physical Chemistry of Solid Surfaces and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| |
Collapse
|
21
|
MIKURIYA M, HIROSHIMA S, KOYAMA Y, TERADA K, YOSHIOKA D, MITSUHASHI R. Preparation and Crystal Structure of Sodium Tetraperoxidochromate(V). X-RAY STRUCTURE ANALYSIS ONLINE 2020. [DOI: 10.2116/xraystruct.36.3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Masahiro MIKURIYA
- Department of Applied Chemistry for Environment, School of Science and Technology, Kwansei Gakuin University
| | - Shuichi HIROSHIMA
- Department of Applied Chemistry for Environment, School of Science and Technology, Kwansei Gakuin University
| | - Yoshiki KOYAMA
- Department of Applied Chemistry for Environment, School of Science and Technology, Kwansei Gakuin University
| | - Keisuke TERADA
- Department of Applied Chemistry for Environment, School of Science and Technology, Kwansei Gakuin University
| | - Daisuke YOSHIOKA
- Department of Applied Chemistry for Environment, School of Science and Technology, Kwansei Gakuin University
| | | |
Collapse
|
22
|
Nasibipour M, Safaei E, Wojtczak A, Jagličić Z, Galindo A, Masoumpour MS. A biradical oxo-molybdenum complex containing semiquinone and o-aminophenol benzoxazole-based ligands. RSC Adv 2020; 10:40853-40866. [PMID: 35519205 PMCID: PMC9059147 DOI: 10.1039/d0ra06351g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Accepted: 10/16/2020] [Indexed: 12/27/2022] Open
Abstract
We report a new mononuclear molybdenum(iv) complex, MoOLBISLSQ, in which LSQ (2,4-di-tert-butyl o-semibenzoquinone ligand) has been prepared from the reaction of the o-iminosemibenzoquinone form of a tridentate non-innocent benzoxazole ligand, LBIS, and MoO2(acac)2. The complex was characterized by X-ray crystallography, elemental analysis, IR and UV-vis spectroscopy and magnetic susceptibility measurements. The crystal structure of MoOLBISLSQ revealed a distorted octahedral geometry around the metal centre, surrounded by one O and two N atoms of LBIS and two O atoms of LSQ. The effective magnetic moment (μeff) of MoOLBISLSQ decreased from 2.36 to 0.2 μB in the temperature range of 290 to 2 K, indicating a singlet ground state caused by antiferromagnetic coupling between the metal and ligand centred unpaired electrons. Also, the latter led to the EPR silence of the complex. Cyclic voltammetry (CV) studies indicate both ligand and metal-centered redox processes. MoOLBISLSQ was applied as a catalyst for the oxidative cleavage of cyclohexene to adipic acid and selective oxidation of sulfides to sulfones with aqueous hydrogen peroxide. Biradical molybdenum(iv) complex, MoOLBISLSQ, has been prepared from the reaction of the o-iminosemibenzoquinone form of a tridentate non-innocent benzoxazole ligand, LBIS, and MoO2(acac)2 and used as catalyst in oxidation reaction..![]()
Collapse
Affiliation(s)
- Mina Nasibipour
- Department of Chemistry
- College of Sciences
- Shiraz University
- Shiraz
- Iran
| | - Elham Safaei
- Department of Chemistry
- College of Sciences
- Shiraz University
- Shiraz
- Iran
| | - Andrzej Wojtczak
- Nicolaus Copernicus University
- Faculty of Chemistry
- 87-100 Torun
- Poland
| | - Zvonko Jagličić
- Institute of Mathematics
- Physics and Mechanics & Faculty of Civil and Geodetic Engineering
- University of Ljubljana
- Ljubljana
- Slovenia
| | - Agustín Galindo
- Departamento de Química Inorgánica
- Facultad de Química
- Universidad de Sevilla
- 41071 Sevilla
- Spain
| | | |
Collapse
|
23
|
Kripli B, Garda Z, Sólyom B, Tircsó G, Kaizer J. Formation, stability and catalase-like activity of mononuclear manganese( ii) and oxomanganese( iv) complexes in protic and aprotic solvents. NEW J CHEM 2020. [DOI: 10.1039/c9nj06004a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Catalytic and stoichiometric H2O2oxidation by [MnII(N4Py*)]2+and [MnIV(N4Py*)(O)]2+complexes as catalase mimics have been carried out.
Collapse
Affiliation(s)
- Balázs Kripli
- Department of Chemistry
- University of Pannonia
- 8201 Veszprém
- Hungary
| | - Zoltán Garda
- Department of Physical Chemistry
- Faculty of Science and Technology
- University of Debrecen
- Debrecen
- Hungary
| | - Bernadett Sólyom
- Department of Chemistry
- University of Pannonia
- 8201 Veszprém
- Hungary
| | - Gyula Tircsó
- Department of Physical Chemistry
- Faculty of Science and Technology
- University of Debrecen
- Debrecen
- Hungary
| | - József Kaizer
- Department of Chemistry
- University of Pannonia
- 8201 Veszprém
- Hungary
| |
Collapse
|
24
|
Ohmatsu K, Ooi T. Cationic Organic Catalysts or Ligands in Concert with Metal Catalysts. Top Curr Chem (Cham) 2019; 377:31. [DOI: 10.1007/s41061-019-0256-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Accepted: 10/09/2019] [Indexed: 11/25/2022]
|
25
|
Stability and Catalase-Like Activity of a Mononuclear Non-Heme Oxoiron(IV) Complex in Aqueous Solution. Molecules 2019; 24:molecules24183236. [PMID: 31491998 PMCID: PMC6766873 DOI: 10.3390/molecules24183236] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Revised: 09/04/2019] [Accepted: 09/05/2019] [Indexed: 01/09/2023] Open
Abstract
Heme-type catalase is a class of oxidoreductase enzymes responsible for the biological defense against oxidative damage of cellular components caused by hydrogen peroxide, where metal-oxo species are proposed as reactive intermediates. To get more insight into the mechanism of this curious reaction a non-heme structural and functional model was carried out by the use of a mononuclear complex [FeII(N4Py*)(CH3CN)](CF3SO3)2 (N4Py* = N,N-bis(2-pyridylmethyl)- 1,2-di(2-pyridyl)ethylamine) as a catalyst, where the possible reactive intermediates, high-valent FeIV=O and FeIII–OOH are known and spectroscopically well characterized. The kinetics of the dismutation of H2O2 into O2 and H2O was investigated in buffered water, where the reactivity of the catalyst was markedly influenced by the pH, and it revealed Michaelis–Menten behavior with KM = 1.39 M, kcat = 33 s−1 and k2(kcat/KM) = 23.9 M−1s−1 at pH 9.5. A mononuclear [(N4Py)FeIV=O]2+ as a possible intermediate was also prepared, and the pH dependence of its stability and reactivity in aqueous solution against H2O2 was also investigated. Based on detailed kinetic, and mechanistic studies (pH dependence, solvent isotope effect (SIE) of 6.2 and the saturation kinetics for the initial rates versus the H2O2 concentration with KM = 18 mM) lead to the conclusion that the rate-determining step in these reactions above involves hydrogen-atom transfer between the iron-bound substrate and the Fe(IV)-oxo species.
Collapse
|
26
|
Peroxo–tungstate(VI) complexes: syntheses, characterization, reactivity, and DFT studies. MONATSHEFTE FUR CHEMIE 2019. [DOI: 10.1007/s00706-019-02435-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
27
|
Wind M, Hoof S, Herwig C, Braun‐Cula B, Limberg C. The Influence of Alkali Metal Ions on the Stability and Reactivity of Chromium(III) Superoxide Moieties Spanned by Siloxide Ligands. Chemistry 2019; 25:5743-5750. [DOI: 10.1002/chem.201900236] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Indexed: 01/09/2023]
Affiliation(s)
- Marie‐Louise Wind
- Department of ChemistryHumboldt-Universität zu Berlin Brook-Taylor-Strasse 2 12489 Berlin Germany
| | - Santina Hoof
- Department of ChemistryHumboldt-Universität zu Berlin Brook-Taylor-Strasse 2 12489 Berlin Germany
| | - Christian Herwig
- Department of ChemistryHumboldt-Universität zu Berlin Brook-Taylor-Strasse 2 12489 Berlin Germany
| | - Beatrice Braun‐Cula
- Department of ChemistryHumboldt-Universität zu Berlin Brook-Taylor-Strasse 2 12489 Berlin Germany
| | - Christian Limberg
- Department of ChemistryHumboldt-Universität zu Berlin Brook-Taylor-Strasse 2 12489 Berlin Germany
| |
Collapse
|
28
|
Saikia G, Ahmed K, Gogoi SR, Sharma M, Talukdar H, Islam NS. A chitosan supported peroxidovanadium(V) complex: Synthesis, characterization and application as an eco-compatible heterogeneous catalyst for selective sulfoxidation in water. Polyhedron 2019. [DOI: 10.1016/j.poly.2018.11.028] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
|
29
|
Vardhan H, Verma G, Ramani S, Nafady A, Al-Enizi AM, Pan Y, Yang Z, Yang H, Ma S. Covalent Organic Framework Decorated with Vanadium as a New Platform for Prins Reaction and Sulfide Oxidation. ACS APPLIED MATERIALS & INTERFACES 2019; 11:3070-3079. [PMID: 30585715 DOI: 10.1021/acsami.8b19352] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Chemical functionalization or docking of transition-metal ions in covalent organic frameworks (COFs) is of importance for calibrating properties and widening potential applications. In this work, we demonstrate the successful decoration of COF with vanadium as exemplified in the context of post-synthetically modifying two-dimensional COF that features eclipsed stacking structure, large pores, hydroxyl functionalities, high thermal and chemical stability using vanadyl acetylacetonate. The potent catalytic behavior of vanadium-decorated COF was systematically investigated in the reactions of Prins condensation and sulfide oxidation, which revealed its excellent catalytic performances in terms of efficacious activity, preservation of framework crystallinity and reusability. Our work not only contributes the first ever report of vanadium-decorated COF-catalyzed Prins reaction and sulfide oxidation but paves a new way for docking COF with metals for a broad range of applications.
Collapse
Affiliation(s)
- Harsh Vardhan
- Department of Chemistry , University of South Florida , 4202 E. Fowler Avenue , Tampa , Florida 33620 , United States
| | - Gaurav Verma
- Department of Chemistry , University of South Florida , 4202 E. Fowler Avenue , Tampa , Florida 33620 , United States
| | - Swetha Ramani
- Department of Chemistry , University of South Florida , 4202 E. Fowler Avenue , Tampa , Florida 33620 , United States
| | - Ayman Nafady
- Department of Chemistry, College of Science , King Saud University , Riyadh 11451 , Saudi Arabia
| | - Abdullah M Al-Enizi
- Department of Chemistry, College of Science , King Saud University , Riyadh 11451 , Saudi Arabia
| | - Yanxiong Pan
- Department of Chemistry and Biochemistry , North Dakota State University , 1231 Albrecht Blvd. , Fargo , North Dakota 58108 , United States
| | - Zhongyu Yang
- Department of Chemistry and Biochemistry , North Dakota State University , 1231 Albrecht Blvd. , Fargo , North Dakota 58108 , United States
| | - Hui Yang
- Department of Chemistry , University of South Florida , 4202 E. Fowler Avenue , Tampa , Florida 33620 , United States
| | - Shengqian Ma
- Department of Chemistry , University of South Florida , 4202 E. Fowler Avenue , Tampa , Florida 33620 , United States
| |
Collapse
|
30
|
Saikia G, Ahmed K, Rajkhowa C, Sharma M, Talukdar H, Islam NS. Polymer immobilized tantalum( v)–amino acid complexes as selective and recyclable heterogeneous catalysts for oxidation of olefins and sulfides with aqueous H 2O 2. NEW J CHEM 2019. [DOI: 10.1039/c9nj04180j] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Polymer supported peroxotantalate based heterogeneous catalysts served as highly efficient, selective and recyclable catalysts for alkene epoxidation and sulfide oxidation with green oxidant aqueous H2O2 under mild reaction conditions.
Collapse
Affiliation(s)
- Gangutri Saikia
- Dept. of Chemical Sciences
- Tezpur University
- Tezpur-784028
- India
| | - Kabirun Ahmed
- Dept. of Chemical Sciences
- Tezpur University
- Tezpur-784028
- India
| | | | - Mitu Sharma
- Dept. of Chemical Sciences
- Tezpur University
- Tezpur-784028
- India
| | - Hiya Talukdar
- Dept. of Chemical Sciences
- Tezpur University
- Tezpur-784028
- India
| | | |
Collapse
|
31
|
Cousin T, Chatel G, Kardos N, Andrioletti B, Draye M. Recent trends in the development of sustainable catalytic systems for the oxidative cleavage of cycloalkenes by hydrogen peroxide. Catal Sci Technol 2019. [DOI: 10.1039/c9cy01269a] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
This review proposes a comprehensive, critical, and accessible assessment of reaction conditions for cycloolefin oxidative cleavage regarding green chemistry criteria.
Collapse
Affiliation(s)
- Tony Cousin
- LCME
- Univ. Savoie Mont Blanc
- 73000 Chambéry
- France
- Univ Lyon
| | | | | | - Bruno Andrioletti
- Univ Lyon
- Université Claude Bernard Lyon 1
- INSA-Lyon
- CPE-Lyon
- ICBMS-UMR CNRS 5246
| | | |
Collapse
|
32
|
Ahmed K, Saikia G, Begum P, Gogoi SR, Sharma M, Talukdar H, Islam NS. Selective and Green Sulfoxidation in Water using a New Chitosan Supported Mo(VI) Complex as Heterogeneous Catalyst. ChemistrySelect 2018. [DOI: 10.1002/slct.201803000] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Kabirun Ahmed
- Department of Chemical Sciences; Tezpur University Napaam; Tezpur- 784028, Assam India
| | - Gangutri Saikia
- Department of Chemical Sciences; Tezpur University Napaam; Tezpur- 784028, Assam India
| | - Pakiza Begum
- Department of Chemical Sciences; Tezpur University Napaam; Tezpur- 784028, Assam India
| | - Sandhya Rani Gogoi
- Department of Chemical Sciences; Tezpur University Napaam; Tezpur- 784028, Assam India
| | - Mitu Sharma
- Department of Chemical Sciences; Tezpur University Napaam; Tezpur- 784028, Assam India
| | - Hiya Talukdar
- Department of Chemical Sciences; Tezpur University Napaam; Tezpur- 784028, Assam India
| | - Nashreen S. Islam
- Department of Chemical Sciences; Tezpur University Napaam; Tezpur- 784028, Assam India
| |
Collapse
|
33
|
Kuo LY, Miao Q, Bright E, Inoue K, Phillips O, Seaman J, Ng M, Kang L. Diethyl phosphite production from phosphorothioate degradation with molybdenum peroxides and hydrogen peroxide in ethanol. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2018.08.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
34
|
Bakkali BE, Trautwein G, Alcañiz-Monge J, Reinoso S. Zirconia-supported 11-molybdovanadophosphoric acid catalysts: effect of the preparation method on their catalytic activity and selectivity. Acta Crystallogr C 2018; 74:1334-1347. [DOI: 10.1107/s2053229618013013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2018] [Accepted: 09/14/2018] [Indexed: 11/11/2022] Open
Abstract
The oxidation of adamantane with hydrogen peroxide catalyzed by zirconia-supported 11-molybdovanadophosphoric acid is shown to be a suitable green route for the synthesis of adamantanol and adamantanone. This work evaluates how the catalyst activity and selectivity are affected by some of its preparative parameters, such as the method for supporting the catalytically active heteropoly acid over the zirconia matrix or the pretreatments applied to the resulting materials before being used as heterogeneous catalysts. Our results indicate that the most effective catalysts able to maintain their activity after several reaction runs are those prepared by following the sol-gel route, whereas the most selective catalysts are those obtained by impregnation methods. Moreover, the calcination temperature has also been identified as a relevant parameter influencing the performance of catalysts based on supported heteropoly acids. The increasing catalytic activity observed over several consecutive reaction runs has been attributed to the formation of peroxo derivatives of polyoxometalate clusters at the surface of the catalyst and their accumulation after each reaction cycle.
Collapse
|
35
|
|
36
|
Abdalghani I, Biancalana L, Aschi M, Pampaloni G, Marchetti F, Crucianelli M. Dioxomolybdenum(VI) compounds with α-amino acid donor ligands as catalytic precursors for the selective oxyfunctionalization of olefins. MOLECULAR CATALYSIS 2018. [DOI: 10.1016/j.mcat.2017.12.018] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
37
|
Boruah JJ, Das SP. Solventless, selective and catalytic oxidation of primary, secondary and benzylic alcohols by a Merrifield resin supported molybdenum(vi) complex with H2O2 as an oxidant. RSC Adv 2018; 8:34491-34504. [PMID: 35548632 PMCID: PMC9086892 DOI: 10.1039/c8ra05969a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Accepted: 09/26/2018] [Indexed: 12/03/2022] Open
Abstract
Here, we have described the synthesis, characterization and catalytic activity of a dioxo-molybdenum(vi) complex supported on functionalized Merrifield resin (MR-SB-Mo). The functionalization of Merrifield resin (MR) was achieved in two-steps viz. carbonylation (MR-C) and Schiff base formation (MR-SB). The compounds, MR-C, MR-SB and MR-SB-Mo, were characterized at each step of the synthesis by elemental, SEM, EDX, thermal, BET and different spectroscopic analysis. The catalyst, MR-SB-Mo, efficiently and selectively oxidized a wide variety of alcohols to aldehydes or ketones using 30% H2O2 as an oxidant with reasonably good TOF (660 h−1 in case of benzyl alcohol). The catalyst acted heterogeneously under solventless reaction conditions and did not lead to over oxidized products under optimized conditions. The catalyst afforded regeneration and can be reused for at least five reaction cycles without loss of efficiency and product selectivity. A reaction mechanism for the catalytic activity of MR-SB-Mo was proposed and a probable reactive intermediate species isolated. Synthesis of a Merrifield resin supported dioxomolybdenum(vi) complex. The compound was well characterized and it catalysed the oxidation of alcohols to aldehydes or ketones with high TOF.![]()
Collapse
Affiliation(s)
| | - Siva Prasad Das
- Department of Chemistry
- School of Science
- RK University
- Rajkot-360020
- India
| |
Collapse
|
38
|
Abstract
Hydrogen peroxide is a chemical used in oxidation reactions, treatment of various inorganic and organic pollutants, bleaching processes in pulp, paper and textile industries and for various disinfection applications. It is a monopropellant, which, when purified, is self-decomposing at high temperatures or when a catalyst is present. Decomposing to yield only oxygen and water(disproportionation), hydrogen peroxide is one of the
cleanest, most versatile chemicals available. The catalytic decomposition of hydrogen peroxide allows the use of various catalysts that will increase the rate of decomposition. Comparison and description of the most commonly used catalysts were presented in this review.
Collapse
|
39
|
|
40
|
Zhao YH, Huang GQ, Cao CY. Catalytic oxidation of cyclohexanol to cyclohexanone with H2O2 using Na2WO4 as a catalytic system. REACTION KINETICS MECHANISMS AND CATALYSIS 2017. [DOI: 10.1007/s11144-017-1226-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
41
|
A safe and scalable process for the synthesis of melt-cast explosive 1-methyl-3,5-dinitro-1H-1,2,4-triazole. Chem Heterocycl Compd (N Y) 2017. [DOI: 10.1007/s10593-017-2114-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
42
|
Kuttassery F, Mathew S, Sagawa S, Remello SN, Thomas A, Yamamoto D, Onuki S, Nabetani Y, Tachibana H, Inoue H. One Electron-Initiated Two-Electron Oxidation of Water by Aluminum Porphyrins with Earth's Most Abundant Metal. CHEMSUSCHEM 2017; 10:1909-1915. [PMID: 28322007 DOI: 10.1002/cssc.201700322] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Revised: 03/20/2017] [Indexed: 05/25/2023]
Abstract
We report herein a new molecular catalyst for efficient water splitting, aluminum porphyrins (tetra-methylpyridiniumylporphyrinatealuminum: AlTMPyP), containing earth's most abundant metal as the central ion. One-electron oxidation of the aluminum porphyrin initiates the two-electron oxidation of water to form hydrogen peroxide as the primary reaction product with the lowest known overpotential (97 mV). The aluminum-peroxo complex was detected by a cold-spray ionization mass-spectrometry in high-resolution MS (HRMS) mode and the structure of the intermediate species was further confirmed using laser Raman spectroscopy, indicating the hydroperoxy complex of AlTMPyP to be the key intermediate in the reaction. The two-electron oxidation of water to form hydrogen peroxide was essentially quantitative, with a Faradaic efficiency of 99 %. The catalytic reaction was found to be highly efficient, with a turnover frequency up to ∼2×104 s-1 . A reaction mechanism is proposed involving oxygen-oxygen bond formation by the attack of a hydroxide ion on the oxyl-radical-like axial ligand oxygen atom in the one-electron-oxidized form of AlTMPyP(O- )2 , followed by a second electron transfer to the electrode.
Collapse
Affiliation(s)
- Fazalurahman Kuttassery
- Department of Applied Chemistry, Center for Artificial Photosynthesis, Tokyo Metropolitan University, 1-1 Minami-ohsawa, Hachiohji, Tokyo, 192-0397, Japan
| | - Siby Mathew
- Department of Applied Chemistry, Center for Artificial Photosynthesis, Tokyo Metropolitan University, 1-1 Minami-ohsawa, Hachiohji, Tokyo, 192-0397, Japan
| | - Shogo Sagawa
- Department of Applied Chemistry, Center for Artificial Photosynthesis, Tokyo Metropolitan University, 1-1 Minami-ohsawa, Hachiohji, Tokyo, 192-0397, Japan
| | - Sebastian Nybin Remello
- Department of Applied Chemistry, Center for Artificial Photosynthesis, Tokyo Metropolitan University, 1-1 Minami-ohsawa, Hachiohji, Tokyo, 192-0397, Japan
| | - Arun Thomas
- Department of Applied Chemistry, Center for Artificial Photosynthesis, Tokyo Metropolitan University, 1-1 Minami-ohsawa, Hachiohji, Tokyo, 192-0397, Japan
| | - Daisuke Yamamoto
- Department of Applied Chemistry, Center for Artificial Photosynthesis, Tokyo Metropolitan University, 1-1 Minami-ohsawa, Hachiohji, Tokyo, 192-0397, Japan
| | - Satomi Onuki
- Department of Applied Chemistry, Center for Artificial Photosynthesis, Tokyo Metropolitan University, 1-1 Minami-ohsawa, Hachiohji, Tokyo, 192-0397, Japan
| | - Yu Nabetani
- Department of Applied Chemistry, Center for Artificial Photosynthesis, Tokyo Metropolitan University, 1-1 Minami-ohsawa, Hachiohji, Tokyo, 192-0397, Japan
| | - Hiroshi Tachibana
- Department of Applied Chemistry, Center for Artificial Photosynthesis, Tokyo Metropolitan University, 1-1 Minami-ohsawa, Hachiohji, Tokyo, 192-0397, Japan
| | - Haruo Inoue
- Department of Applied Chemistry, Center for Artificial Photosynthesis, Tokyo Metropolitan University, 1-1 Minami-ohsawa, Hachiohji, Tokyo, 192-0397, Japan
| |
Collapse
|
43
|
Zong L, Tan CH. Phase-Transfer and Ion-Pairing Catalysis of Pentanidiums and Bisguanidiniums. Acc Chem Res 2017; 50:842-856. [PMID: 28379012 DOI: 10.1021/acs.accounts.6b00604] [Citation(s) in RCA: 93] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Catalysts accelerate biological processes and organic reactions in a controlled and selective fashion. There are continuing efforts in asymmetric catalysis to develop efficient catalysts with broad reaction scope and industrial practicability. Among the various modes of asymmetric catalysis, phase-transfer catalysis has attracted intense interest due to its facile scale up and low catalyst loading. Chiral quaternary ammonium and phosphonium salts are well-studied classes of chiral phase-transfer catalysts, and they are typically composed of sp3-hybridized quaternary onium salts. In this Account, we describe our recent attempts to develop N-sp2-hybridized guanidinium-type salts as efficient phase-transfer catalysts as well as ion-pair catalysis based on N-sp2 hybridized bisguanidinium-type salts. The sp2-quaternized ammonium salts, pentanidiums, which contain five nitrogen atoms in conjugation, displayed remarkable phase-transfer catalytic efficiency. We have shown that pentanidium can catalyze Michael additions of tert-butyl glycinate-benzophenone Schiff bases with various α,β-unsaturated acceptors, such as vinyl ketones, acrylates, and chalcones, in high enantioselectivities. The structurally amendable pentanidium phase-transfer catalysts supply diverse reactivity and selectivity to various other organic transformations, such as α-hydroxylation of 3-substituted-2-oxindoles, Michael addition of 3-alkyloxindoles with vinyl sulfone, and alkylation reactions of sulfenate anions and dihydrocoumarins. Pentanidium salts are applicable to enantioselective transformations on a preparative scale at low catalyst loading, allowing for the synthesis of a broad range of enantiopure compounds. From computational and experimental results, we also proposed that the halogenated pentanidium catalysts participated in halogen bonding and that this contributed to the excellent stereocontrol in alkylation reactions. Subsequently, we determined that chiral cations can direct functional anions besides basic anions in traditional Brønsted basic phase-transfer reactions, including metal-centered anions. We identified dicationic bisguanidinium as an excellent ion-pairing catalyst, first demonstrating that bisguanidinium formed an ion pair with permanganate and directed the anion in enantioselective dihydroxylation and oxohydroxylation of a,β-unsaturated esters. This initial success led us to explore chiral cationic ion-pairing catalysis as a general mode of catalysis. This mode of catalysis is at the interphase between organocatalysis, phase-transfer catalysis and organometallic catalysis. We then identified bisguanidinium diphosphatobisperoxotungstate and bisguanidinium dinuclear oxodiperoxomolybdosulfate ion pairs as the active catalysts in enantioselective sulfoxidations using aqueous H2O2 as the oxidant. The structure of the bisguanidinium dinuclear oxodiperoxomolybdosulfate ion pair was elucidated using single-crystal X-ray analysis. Bisguanidinium-catalyzed sulfoxidations emerged as a practical methodology for the synthesis of enantioenriched sulfoxides including armodafinil and lansoprazole, which are commercial drugs. Finally, we are also able to show that pentanidium and bisguanidinium hypervalent silicates are intermediates in enantioselective alkylations using silylamide as a Brønsted probase.
Collapse
Affiliation(s)
- Lili Zong
- Division of Chemistry and
Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
| | - Choon-Hong Tan
- Division of Chemistry and
Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
| |
Collapse
|
44
|
Masteri-Farahani M, Modarres M. Superiority of Activated Carbon versus MCM-41 for the Immobilization of Molybdenum Dithiocarbamate Complex as Heterogeneous Epoxidation Catalyst. ChemistrySelect 2017. [DOI: 10.1002/slct.201601781] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
45
|
Guo J, Niu Y, Song L, Xu Q, Lu J, Ma P, Zhang D, Zhang C, Niu J, Wang J. Synthesis, characterization and catalytic epoxidation properties of lanthanide-stabilized peroxoisopolytungstates. Dalton Trans 2017; 46:12981-12987. [DOI: 10.1039/c7dt02471a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of new lanthanide-containing peroxoisopolyoxotungstates, K6Na4[H32{Ln4(WO4)(H2O)16[W7O22(O2)2]4}3]·105H2O [Ln = CeIII(1), NdIII(2), SmIII(3), TbIII(4), ErIII(5)], have been successfully synthesized and structurally characterized.
Collapse
|
46
|
Ke H, Lu X, Wei W, Wang W, Xie G, Chen S. Unusual undecanuclear heterobimetallic Zn4Ln7 (Ln = Gd, Dy) nano-sized clusters encapsulating two peroxide anions through spontaneous intake of dioxygen. Dalton Trans 2017; 46:8138-8145. [DOI: 10.1039/c7dt01501a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Hetero-undecanuclear Zn4Ln7 clusters encapsulating two peroxide anions represent a rare example of a 3d-peroxo-Ln system and expand the scope of metal-peroxo complexes.
Collapse
Affiliation(s)
- Hongshan Ke
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education
- College of Chemistry and Materials Science
- Northwest University
- Xi'an 710069
- P. R. China
| | - Xiaohua Lu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education
- College of Chemistry and Materials Science
- Northwest University
- Xi'an 710069
- P. R. China
| | - Wen Wei
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education
- College of Chemistry and Materials Science
- Northwest University
- Xi'an 710069
- P. R. China
| | - Wenyuan Wang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education
- College of Chemistry and Materials Science
- Northwest University
- Xi'an 710069
- P. R. China
| | - Gang Xie
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education
- College of Chemistry and Materials Science
- Northwest University
- Xi'an 710069
- P. R. China
| | - Sanping Chen
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education
- College of Chemistry and Materials Science
- Northwest University
- Xi'an 710069
- P. R. China
| |
Collapse
|
47
|
Boruah JJ, Ahmed K, Das S, Gogoi SR, Saikia G, Sharma M, Islam NS. Peroxomolybdate supported on water soluble polymers as efficient catalysts for green and selective sulfoxidation in aqueous medium. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.molcata.2016.09.026] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
48
|
Das N, Chowdhury S, Dutta Purkayastha RN. Syntheses, Structural Characterization, Reactivity, and Theoretical Studies on Some Heteroligand Oxoperoxotungstate(VI). J CHIN CHEM SOC-TAIP 2016. [DOI: 10.1002/jccs.201600192] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Nandita Das
- Department of Chemistry; Tripura University; Suryamaninagar Tripura 799022 India
| | - Shubhamoy Chowdhury
- Department of Chemistry; Tripura University; Suryamaninagar Tripura 799022 India
| | | |
Collapse
|
49
|
Zong L, Wang C, Moeljadi AMP, Ye X, Ganguly R, Li Y, Hirao H, Tan CH. Bisguanidinium dinuclear oxodiperoxomolybdosulfate ion pair-catalyzed enantioselective sulfoxidation. Nat Commun 2016; 7:13455. [PMID: 27869124 PMCID: PMC5121337 DOI: 10.1038/ncomms13455] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2016] [Accepted: 10/06/2016] [Indexed: 12/31/2022] Open
Abstract
Catalytic use of peroxomolybdate for asymmetric transformations has attracted increasing attention due to its catalytic properties and application in catalysis. Herein, we report chiral bisguanidinium dinuclear oxodiperoxomolybdosulfate [BG]2+[(μ-SO4)Mo2O2(μ-O2)2(O2)2]2− ion pair, as a catalyst for enantioselective sulfoxidation using aqueous H2O2 as the terminal oxidant. The ion pair catalyst is isolatable, stable and useful for the oxidation of a range of dialkyl sulfides. The practical utility was illustrated using a gram-scale synthesis of armodafinil, a commercial drug, with the catalyst generated in situ from 0.25 mol% of bisguanidinium and 2.5 mol% of Na2MoO4·2H2O. Structural characterization of this ion pair catalyst has been successfully achieved using single-crystal X-ray crystallography. Peroxomolybdates can be used as catalysts, but to date have not been employed in catalytic asymmetric transformations. Here the authors report that peroxomolybdates with a chiral bisguanidinium salts are active catalysts for asymmetric sulfoxidation, and furthermore identify the catalytic species.
Collapse
Affiliation(s)
- Lili Zong
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
| | - Chao Wang
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
| | - Adhitya Mangala Putra Moeljadi
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
| | - Xinyi Ye
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
| | - Rakesh Ganguly
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
| | - Yongxin Li
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
| | - Hajime Hirao
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
| | - Choon-Hong Tan
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
| |
Collapse
|
50
|
Rana S, Pandey B, Dey A, Haque R, Rajaraman G, Maiti D. A Doubly Biomimetic Synthetic Transformation: Catalytic Decarbonylation and Halogenation at Room Temperature by Vanadium Pentoxide. ChemCatChem 2016. [DOI: 10.1002/cctc.201600843] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Sujoy Rana
- Department of Chemistry; Indian Institute of Technology Bombay, Powai; Mumbai- 400076 India
| | - Bhawana Pandey
- Department of Chemistry; Indian Institute of Technology Bombay, Powai; Mumbai- 400076 India
| | - Aniruddha Dey
- Department of Chemistry; Indian Institute of Technology Bombay, Powai; Mumbai- 400076 India
| | - Rameezul Haque
- Department of Chemistry; Indian Institute of Technology Bombay, Powai; Mumbai- 400076 India
| | - Gopalan Rajaraman
- Department of Chemistry; Indian Institute of Technology Bombay, Powai; Mumbai- 400076 India
| | - Debabrata Maiti
- Department of Chemistry; Indian Institute of Technology Bombay, Powai; Mumbai- 400076 India
| |
Collapse
|