1
|
Sutradhar S, Rahaman R, Bhattacharya S, Paul S, Paine TK. Oxygenolytic cleavage of 1,2-diols with dioxygen by a mononuclear nonheme iron complex: Mimicking the reaction of myo-inositol oxygenase. J Inorg Biochem 2024; 257:112611. [PMID: 38788359 DOI: 10.1016/j.jinorgbio.2024.112611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Revised: 05/08/2024] [Accepted: 05/09/2024] [Indexed: 05/26/2024]
Abstract
A mononuclear iron(II) complex, [(TpPh2)FeII(OTf)(CH3CN)] (1) (TpPh2 = hydrotris(3,5-diphenylpyrazol-1-yl)borate, OTf = triflate) has been isolated and its efficiency toward the aliphatic CC bond cleavage reaction of 1,2-diols with dioxygen has been investigated. Separate reactions between 1 and different 1,2-diolates form the corresponding iron(II)-diolate complexes in solution. While the iron(II) complex of the tetradentate TPA (tris(2-pyridylmethyl)amine) ligand is not efficient in affecting the CC cleavage of 1,2-diol with dioxygen, complex 1 displays catalytic activity to afford carboxylic acid and aldehyde. Isotope labeling studies with 18O2 reveal that one oxygen atom from dioxygen is incorporated into the carboxylic acid product. The oxygenative CC cleavage reactions occur on the 1,2-diols containing at least one α-H atom. The kinetic isotope effect value of 5.7 supports the abstraction of an α-H by an iron(III)-superoxo species to propagate the CC cleavage reactions. The oxidative cleavage of 1,2-diolates by the iron(II) complex mimics the reaction catalyzed by the nonheme diiron enzyme, myo-inositol oxygenase.
Collapse
Affiliation(s)
- Subhankar Sutradhar
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A&2B Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Rubina Rahaman
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A&2B Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India; Department of Chemistry, Krishnagar Government College, Krishnagar, West Bengal 741101, India
| | - Shrabanti Bhattacharya
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A&2B Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Satadal Paul
- Department of Chemistry, Bangabasi Morning College, 19 Rajkumar Chakraborty Sarani, Kolkata 700009, India
| | - Tapan Kanti Paine
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A&2B Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India.
| |
Collapse
|
2
|
Chowdhury M, Biswas N, Saha S, Zangrando E, Rizzoli C, Sepay N, Roy Choudhury C. Structural investigation, theoretical DFT, Hirshfeld surface analysis and catalytic behaviour towards 3,5-DTBC oxidation of two cobalt(ii) complexes with semicarbazone Schiff base ligands. TRANSIT METAL CHEM 2023. [DOI: 10.1007/s11243-023-00523-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/28/2023]
|
3
|
Yaragorla S, Khan T, Behera A. Oxidative Cleavage of C sp3-C sp2 and C sp3-H Bonds with KO tBu: Highly Robust and Practical Synthesis of Diaryl/(het-Ar) Ketones. J Org Chem 2023; 88:2103-2112. [PMID: 36723458 DOI: 10.1021/acs.joc.2c02519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Herein, we report an efficient and practical approach for synthesizing diaryl(het) ketones from R-CO-CHR-Ar through a simultaneous oxidative cleavage of C-C and C-H bonds using KOtBu. This method enables synthesizing a variety of unsymmetrical and symmetrical (hetero)aryl ketones in excellent yields, which are otherwise difficult to make. Besides, we synthesized natural products using this method.
Collapse
Affiliation(s)
- Srinivasarao Yaragorla
- School of Chemistry, University of Hyderabad, P.O. Central University, Gachibowli, Hyderabad 500046, India
| | - Tabassum Khan
- School of Chemistry, University of Hyderabad, P.O. Central University, Gachibowli, Hyderabad 500046, India
| | - Ahalya Behera
- School of Chemistry, University of Hyderabad, P.O. Central University, Gachibowli, Hyderabad 500046, India
| |
Collapse
|
4
|
Banerjee A, Li J, Molenda MA, Opalade AA, Adhikary A, Brennessel WW, Malkhasian AYS, Jackson TA, Chavez FA. Probing the Mechanism for 2,4'-Dihydroxyacetophenone Dioxygenase Using Biomimetic Iron Complexes. Inorg Chem 2021; 60:7168-7179. [PMID: 33900072 DOI: 10.1021/acs.inorgchem.1c00167] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In this study, we report the synthesis and characterization of [Fe(T1Et4iPrIP)(2-OH-AP)(OTf)](OTf) (2), [Fe(T1Et4iPrIP)(2-O-AP)](OTf) (3), and [Fe(T1Et4iPrIP)(DMF)3](OTf)3 (4) (T1Et4iPrIP = tris(1-ethyl-4-isopropyl-imidazolyl)phosphine; 2-OH-AP = 2-hydroxyacetophenone, and 2-O-AP- = monodeprotonated 2-hydroxyacetophenone). Both 2 and 3 serve as model complexes for the enzyme-substrate adduct for the nonheme enzyme 2,4'-dihydroacetophenone (DHAP) dioxygenase or DAD, while 4 serves as a model for the ferric form of DAD. Complexes 2-4 have been characterized by X-ray crystallography which reveals T1Et4iPrIP to bind iron in a tridentate fashion. Complex 2 additionally contains a bidentate 2-OH-AP ligand and a monodentate triflate ligand yielding distorted octahedral geometry, while 3 possesses a bidentate 2-O-AP- ligand and exhibits distorted trigonal bipyramidal geometry (τ = 0.56). Complex 4 displays distorted octahedral geometry with 3 DMF ligands completing the ligand set. The UV-vis spectrum of 2 matches more closely to the DAD-substrate spectrum than 3, and therefore, it is believed that the substrate for DAD is bound in the protonated form. TD-DFT studies indicate that visible absorption bands for 2 and 3 are due to MLCT bands. Complexes 2 and 3 are capable of oxidizing the coordinated substrate mimics in a stoichiometric and catalytic fashion in the presence of O2. Complex 4 does not convert 2-OH-AP to products under the same catalytic conditions; however, it becomes anaerobically reduced in the presence of 2 equiv 2-OH-AP to 2.
Collapse
Affiliation(s)
- Atanu Banerjee
- Dr. K. C. Patel R & D Centre, Charotar University of Science and Technology (CHARUSAT), P D Patel Institute of Applied Sciences, 388421 Anand, Gujrat, India
| | - Jia Li
- Department of Chemistry, Oakland University, Rochester, Michigan 48309-4477, United States
| | - Monika A Molenda
- Department of Chemistry, Oakland University, Rochester, Michigan 48309-4477, United States
| | - Adedamola A Opalade
- Department of Chemistry and Center for Environmentally Beneficial Catalysis, The University of Kansas, Lawrence, Kansas 66045, United States
| | - Amitava Adhikary
- Department of Chemistry, Oakland University, Rochester, Michigan 48309-4477, United States
| | - William W Brennessel
- Department of Chemistry, University of Rochester, Rochester, New York 14627-0216, United States
| | | | - Timothy A Jackson
- Department of Chemistry and Center for Environmentally Beneficial Catalysis, The University of Kansas, Lawrence, Kansas 66045, United States
| | - Ferman A Chavez
- Department of Chemistry, Oakland University, Rochester, Michigan 48309-4477, United States
| |
Collapse
|
5
|
Rammurthy B, Peraka S, Vasu A, Krishna Sai G, Divya Rohini Y, Narender N. Metal‐free Catalytic Esterification of Aryl Alkyl Ketones with Alcohols via Free‐radical Mediated C(sp
3
)−H Bond Oxygenation. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202000691] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Banothu Rammurthy
- Academy of Scientific and Innovative Research, CSIR-HRDG Campus, Sector 19, Kamla Nehru Nagar Ghaziabad 201002, UP India
- C & FC Division CSIR-Indian Institute of Chemical Technology Hyderabad 500007 Telangana India
| | - Swamy Peraka
- Academy of Scientific and Innovative Research, CSIR-HRDG Campus, Sector 19, Kamla Nehru Nagar Ghaziabad 201002, UP India
- C & FC Division CSIR-Indian Institute of Chemical Technology Hyderabad 500007 Telangana India
| | - Amrutham Vasu
- Academy of Scientific and Innovative Research, CSIR-HRDG Campus, Sector 19, Kamla Nehru Nagar Ghaziabad 201002, UP India
- C & FC Division CSIR-Indian Institute of Chemical Technology Hyderabad 500007 Telangana India
| | - Gajula Krishna Sai
- Academy of Scientific and Innovative Research, CSIR-HRDG Campus, Sector 19, Kamla Nehru Nagar Ghaziabad 201002, UP India
- C & FC Division CSIR-Indian Institute of Chemical Technology Hyderabad 500007 Telangana India
| | - Yennamaneni Divya Rohini
- Academy of Scientific and Innovative Research, CSIR-HRDG Campus, Sector 19, Kamla Nehru Nagar Ghaziabad 201002, UP India
- C & FC Division CSIR-Indian Institute of Chemical Technology Hyderabad 500007 Telangana India
| | - Nama Narender
- Academy of Scientific and Innovative Research, CSIR-HRDG Campus, Sector 19, Kamla Nehru Nagar Ghaziabad 201002, UP India
- C & FC Division CSIR-Indian Institute of Chemical Technology Hyderabad 500007 Telangana India
| |
Collapse
|
6
|
Roberts KM, Connor GC, Cave CH, Rowe GT, Page CA. The metal- and substrate-dependences of 2,4'-dihydroxyacetophenone dioxygenase. Arch Biochem Biophys 2020; 691:108441. [PMID: 32531315 DOI: 10.1016/j.abb.2020.108441] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Revised: 05/25/2020] [Accepted: 05/27/2020] [Indexed: 12/11/2022]
Abstract
While the enzyme, 2,4'-dihydroxyacetophenone dioxygenase (DAD), has been known for decades, very little has been characterized of the mechanism of the DAD-catalyzed oxidative cleavage of its reported substrate, 2,4'-dihydroxyacetophenone (DHA). The purpose of this study was to identify the active metal center and to characterize the substrate-dependence of the kinetics of the reaction to lay the foundation for deeper mechanistic investigation. To this, the DAD V1M mutant (bDAD) was overexpressed, purified, and reconstituted with various metal ions. Kinetic assays evaluating the activity of the reconstituted enzyme as well as the substrate- and product-dependences of the reaction kinetics were performed. The results from reconstitution of the apoprotein with a variety of metal ions support the requirement for an Fe3+ center for enzyme activity. Reaction rates showed simple saturation kinetics for DHA with values for kcat and KDHA of 2.4 s-1 and 0.7 μM, respectively, but no significant dependence on the concentration of O2. A low-level inhibition (KI = 1100 μM) by the 4HB product was observed. The results support a minimal kinetic model wherein DHA binds to resting ferric enzyme followed by rapid addition of O2 to yield an intermediate complex that irreversibly collapses to products.
Collapse
Affiliation(s)
- Kenneth M Roberts
- Department of Chemistry and Physics, University of South Carolina Aiken, Aiken, SC, 29801, USA.
| | - Gabrielle C Connor
- Department of Chemistry and Physics, University of South Carolina Aiken, Aiken, SC, 29801, USA.
| | - C Haley Cave
- Department of Chemistry and Physics, University of South Carolina Aiken, Aiken, SC, 29801, USA.
| | - Gerard T Rowe
- Department of Chemistry and Physics, University of South Carolina Aiken, Aiken, SC, 29801, USA.
| | - Clinton A Page
- Department of Biology and Geology, University of South Carolina Aiken, Aiken, SC, 29801, USA.
| |
Collapse
|
7
|
Jiang H, Lai W. Monophenolase and catecholase activity of Aspergillus oryzae catechol oxidase: insights from hybrid QM/MM calculations. Org Biomol Chem 2020; 18:5192-5202. [PMID: 32589184 DOI: 10.1039/d0ob00969e] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Catechol oxidase from Aspergillus oryzae (AoCO4) can not only catalyze oxidation of o-diphenols to o-quinones, but can also catalyze monooxygenation of small phenolics. To gain insight into the catecholase and monophenolase activities of AoCO4, the reaction mechanism of catechol oxidation was investigated by means of hybrid quantum mechanical/molecular mechanical (QM/MM) calculations. The oxy-form of AoCO4 was found to be a μ-η2:η2 side-on peroxo dicopper(ii) complex, which can undergo a proton coupled electron transfer from the substrate rather than a proton transfer from the nearby Ser302 residue to generate a hydroperoxide. The μ-1,1-OOH Cu2(i,ii) complex is thermodynamically more stable than the μ-η1:η2 hydroperoxide. Moreover, the cleavage of the O-O bond in the μ-1,1-OOH Cu2(i,ii) intermediate has a much lower barrier than that in the μ-η1:η2 hydroperoxide species. In both cases, the O-O bond cleavage is the rate-limiting step, generating the reactive (μ-O˙)(μ-OH) dicopper(ii) complex. In addition, our results demonstrated that the oxidation of catechol to quinone is much more preferred than the hydroxylation reaction. These findings may provide useful information for understanding the reactivity of the Cu2O2 active site of coupled binuclear copper enzymes.
Collapse
Affiliation(s)
- Hao Jiang
- Department of Chemistry, Renmin University of China, Beijing, 100872, China.
| | - Wenzhen Lai
- Department of Chemistry, Renmin University of China, Beijing, 100872, China.
| |
Collapse
|
8
|
Gunawan C, Faiz MB, Mann R, Ting SRS, Sotiriou GA, Marquis CP, Amal R. Nanosilver Targets the Bacterial Cell Envelope: The Link with Generation of Reactive Oxygen Radicals. ACS APPLIED MATERIALS & INTERFACES 2020; 12:5557-5568. [PMID: 31927911 DOI: 10.1021/acsami.9b20193] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The work describes the interactions of nanosilver (NAg) with bacterial cell envelope components at a molecular level and how this associates with the reactive oxygen species (ROS)-mediated toxicity of the nanoparticle. Major structural changes were detected in cell envelope biomolecules as a result of damages in functional moieties, such as the saccharides, amides, and phosphodiesters. NAg exposure disintegrates the glycan backbone in the major cell wall component peptidoglycan, causes complete breakdown of lipoteichoic acid, and disrupts the phosphate-amine and fatty acid groups in phosphatidylethanolamine, a membrane phospholipid. Consistent with the oxidative attacks, we propose that the observed cell envelope damages are inflicted, at least in part, by the reactive oxygen radicals being generated by the nanoparticle during its leaching process, abiotically, without cells. The cell envelope targeting, especially those on the inner membrane phospholipid, is likely to then trigger the rapid generation of lethal levels of cellular superoxide (O2•-) and hydroxyl (OH•) radicals herein seen with a model bacterium. The present study provides a better understanding of the antibacterial mechanisms of NAg, whereby ROS generation could be both the cause and consequence of the toxicity, associated with the initial cell envelope targeting by the nanoparticle.
Collapse
Affiliation(s)
- Cindy Gunawan
- ithree institute , University of Technology Sydney , Sydney , NSW 2007 , Australia
- School of Chemical Engineering , University of New South Wales , Sydney , NSW 2052 , Australia
| | - Merisa B Faiz
- School of Chemical Engineering , University of New South Wales , Sydney , NSW 2052 , Australia
| | - Riti Mann
- ithree institute , University of Technology Sydney , Sydney , NSW 2007 , Australia
| | - Simon R S Ting
- Centre for Health Technologies , University of Technology Sydney , Sydney NSW 2007 , Australia
| | - Georgios A Sotiriou
- Department of Microbiology, Tumor and Cell Biology , Karolinska Institutet , Solna, Stockholm 171 77 , Sweden
| | - Christopher P Marquis
- School of Biotechnology and Biomolecular Sciences , University of New South Wales , Sydney , NSW 2052 , Australia
| | - Rose Amal
- School of Chemical Engineering , University of New South Wales , Sydney , NSW 2052 , Australia
| |
Collapse
|
9
|
Bhattacherjee P, Mitra P, Sarkar P, John RP. A three-dimensional manganese(II) coordination polymer: synthesis, structure and catecholase activity. J COORD CHEM 2020. [DOI: 10.1080/00958972.2020.1740213] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Prama Bhattacherjee
- Department of Chemistry, Indian Institute of Technology (ISM), Dhanbad, Jharkhand, India
| | - Partha Mitra
- Department of Central Scientific Service, Indian Association for Cultivation of Science, Kolkata, India
| | - Prasenjit Sarkar
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, Assam, India
| | - Rohith P. John
- Department of Chemistry, Indian Institute of Technology (ISM), Dhanbad, Jharkhand, India
| |
Collapse
|
10
|
Banerjee S, Paine TK. Bioinspired iron(II)-β-diketonate and iron(II)-α-hydroxy ketone complexes of a carbanionic N3C ligand: Oxidation of metal center vs C C bond cleavage of co-ligand with dioxygen. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2019.119200] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
|
11
|
Li S, Jie K, Yan W, Pan Q, Zhang M, Wang Y, Fu Z, Guo S, Cai H. Selective C–C bond cleavage of amides fused to 8-aminoquinoline controlled by a catalyst and an oxidant. Chem Commun (Camb) 2020; 56:13820-13823. [DOI: 10.1039/d0cc04960c] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein, copper-catalyzed direct C–C bond cleavage of amides fused to 8-aminoquinoline as a directing group to form urea in the presence of amines and dioxygen is reported.
Collapse
Affiliation(s)
- Sen Li
- Department of Chemistry
- Nanchang University
- Nanchang
- P. R. China
| | - Kun Jie
- Department of Chemistry
- Nanchang University
- Nanchang
- P. R. China
| | - Wenjie Yan
- Department of Chemistry
- Nanchang University
- Nanchang
- P. R. China
| | - Qingjun Pan
- Department of Chemistry
- Nanchang University
- Nanchang
- P. R. China
| | - Min Zhang
- Department of Chemistry
- Nanchang University
- Nanchang
- P. R. China
| | - Yufeng Wang
- Department of Chemistry
- Nanchang University
- Nanchang
- P. R. China
| | - Zhengjiang Fu
- Department of Chemistry
- Nanchang University
- Nanchang
- P. R. China
| | - Shengmei Guo
- Department of Chemistry
- Nanchang University
- Nanchang
- P. R. China
| | - Hu Cai
- Department of Chemistry
- Nanchang University
- Nanchang
- P. R. China
| |
Collapse
|
12
|
Ramasubramanian R, Anandababu K, Mösch-Zanetti NC, Belaj F, Mayilmurugan R. Bioinspired models for an unusual 3-histidine motif of diketone dioxygenase enzyme. Dalton Trans 2019; 48:14326-14336. [PMID: 31486449 DOI: 10.1039/c9dt02518a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Bioinspired models for contrasting the electronic nature of neutral tris-histidine with the anionic 2-histidine-1-carboxylate facial motif and their subsequent impact on catalysis are reported. Herewith, iron(ii) complexes [Fe(L)(CH3CN)3](SO3CF3)21-3 of tris(2-pyridyl)-based ligands (L) have been synthesized and characterized as accurate structural models for the neutral 3-histidine triad of the enzyme diketone dioxygenase (DKDO). The molecular structure of one of the complexes exhibits octahedral coordination geometry and Fe-N11py bond lengths [1.952(4) to 1.959(4) Å] close to the Fe-NHis bond distances (1.98 Å) of the 3-His triad in the resting state of the enzyme, as obtained by EXAFS studies. The diketonate substrate-adduct complexes [Fe(L)(acacR)](SO3CF3) (R = Me, Ph) of 1-3 have been obtained using Na(acacR) in acetonitrile. The Fe2+/3+ redox potentials of the complexes (1.05 to 1.2 V vs. Fc/Fc+) and their substrate adducts (1.02 to 1.19 V vs. Fc/Fc+) appeared at almost the same redox barrier. All diketonate adducts exhibit two Fe(ii) → acac MLCT bands around 338 to 348 and 430 to 490 nm. Exposure of these adducts to O2 results in the decay of both MLCT bands with a rate of (kO2) 5.37 to 9.41 × 10-3 M-1 s-1. The kO2 values were concomitantly accelerated 20 to 50 fold by the addition of H+ (acetic acid), which nicely models the rate enhancement in the enzyme kinetics by the glutamate residue (Glu98). The oxygenation of the phenyl-substituted adducts yielded benzoin and benzoic acid (40% to 71%) as cleavage products in the presence of H+ ions. Isotope-labeling experiments using 18O2 showed 47% incorporation of 18O in benzoic acid, which reveals that the oxygen originates from dioxygen. Thus, the present model complexes exhibit very similar chemical surroundings to the active site of DKDO and mimic its functions elegantly. On the basis of these results, the C-C bond cleavage reaction mechanism is discussed.
Collapse
Affiliation(s)
- Ramamoorthy Ramasubramanian
- Bioinorganic Chemistry Laboratory/Physical Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai - 625021, India.
| | - Karunanithi Anandababu
- Bioinorganic Chemistry Laboratory/Physical Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai - 625021, India.
| | | | - Ferdinand Belaj
- Institute of Chemistry, University of Graz, Schubertstrasse 1, 8010 Graz, Austria
| | - Ramasamy Mayilmurugan
- Bioinorganic Chemistry Laboratory/Physical Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai - 625021, India.
| |
Collapse
|
13
|
Manasa KL, Tangella Y, Krishna NH, Alvala M. A metal-free approach for the synthesis of amides/esters with pyridinium salts of phenacyl bromides via oxidative C-C bond cleavage. Beilstein J Org Chem 2019; 15:1864-1871. [PMID: 31467608 PMCID: PMC6693371 DOI: 10.3762/bjoc.15.182] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Accepted: 07/26/2019] [Indexed: 11/23/2022] Open
Abstract
An efficient, simple, and metal-free synthetic approach for the N- and O-benzoylation of various amines/benzyl alcohols with pyridinium salts of phenacyl bromides is demonstrated to generate the corresponding amides and esters. This protocol facilitates the oxidative cleavage of a C–C bond followed by formation of a new C–N/C–O bond in the presence of K2CO3. Various pyridinium salts of phenacyl bromides can be readily transformed into a variety of amides and esters which is an alternative method for the conventional amidation and esterification in organic synthesis. High functional group tolerance, broad substrate scope and operational simplicity are the prominent advantages of the current protocol.
Collapse
Affiliation(s)
- Kesari Lakshmi Manasa
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad-500 037, India
| | - Yellaiah Tangella
- Fluoro-Agrochemicals, CSIR-Indian Institute of Chemical Technology, Hyderabad-500 007, India
| | - Namballa Hari Krishna
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad-500 037, India
| | - Mallika Alvala
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad-500 037, India
| |
Collapse
|
14
|
Sharma AK, Kumar P, Vishwakarma RK, Singh KN. Visible‐Light‐Enabled Synthesis of Pyridyl Benzamides via Oxidative Decarbethoxylation using Copper(I) Iodide/Air at Room Temperature. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900146] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Anup Kumar Sharma
- Department of Chemistry (Centre of advanced Study) Institution of ScienceBanaras Hindu University Varanasi 221005 India
| | - Promod Kumar
- Department of Chemistry (Centre of advanced Study) Institution of ScienceBanaras Hindu University Varanasi 221005 India
| | - Ramesh Kumar Vishwakarma
- Department of Chemistry (Centre of advanced Study) Institution of ScienceBanaras Hindu University Varanasi 221005 India
| | - Krishna Nand Singh
- Department of Chemistry (Centre of advanced Study) Institution of ScienceBanaras Hindu University Varanasi 221005 India
| |
Collapse
|
15
|
Zhu D, Si H, Zhang P, Geng A, Zhang W, Yang B, Qian WJ, Gabriel M, Sun J. Genomics and biochemistry investigation on the metabolic pathway of milled wood and alkali lignin-derived aromatic metabolites of Comamonas serinivorans SP-35. BIOTECHNOLOGY FOR BIOFUELS 2018; 11:338. [PMID: 30603046 PMCID: PMC6307125 DOI: 10.1186/s13068-018-1341-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2018] [Accepted: 12/15/2018] [Indexed: 05/24/2023]
Abstract
BACKGROUND The efficient depolymerization and utilization of lignin are one of the most important goals for the renewable use of lignocelluloses. The degradation and complete mineralization of lignin by bacteria represent a key step for carbon recycling in land ecosystems as well. However, many aspects of this process remain unclear, for example, the complex network of metabolic pathways involved in the degradation of lignin and the catabolic pathway of intermediate aromatic metabolites. To address these subjects, we characterized the deconstruction and mineralization of lignin with milled wood lignin (MWL, the most representative molecule of lignin in its native state) and alkali lignin (AL), and elucidated metabolic pathways of their intermediate metabolites by a bacterium named Comamonas serinivorans SP-35. RESULTS The degradation rate of MWL reached 30.9%, and its particle size range was decreased from 6 to 30 µm to 2-4 µm-when cultured with C. serinivorans SP35 over 7 days. FTIR analysis showed that the C-C and C-O-C bonds between the phenyl propane structures of lignin were oxidized and cleaved and the side chain structure was modified. More than twenty intermediate aromatic metabolites were identified in the MWL and AL cultures based on GC-MS analysis. Through genome sequencing and annotation, and from GC-MS analysis, 93 genes encoding 33 enzymes and 5 regulatory factors that may be involved in lignin degradation were identified and more than nine metabolic pathways of lignin and its intermediates were predicted. Of particular note is that the metabolic pathway to form the powerful antioxidant 3,4-dihydroxyphenylglycol is described for the first time in bacteria. CONCLUSION Elucidation of the β-aryl ether cleavage pathway in the strain SP-35 indicates that the β-aryl ether catabolic system is not only present in the family of Sphingomonadaceae, but also other species of bacteria kingdom. These newly elucidated catabolic pathways of lignin in strain SP-35 and the enzymes responsible for them provide exciting biotechnological opportunities for lignin valorization in future.
Collapse
Affiliation(s)
- Daochen Zhu
- Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, Jiangsu China
- State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology, Guangdong Institute of Microbiology, Guangzhou, China
| | - Haibing Si
- Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, Jiangsu China
| | - Peipei Zhang
- Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, Jiangsu China
| | - Alei Geng
- Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, Jiangsu China
| | - Weimin Zhang
- State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology, Guangdong Institute of Microbiology, Guangzhou, China
| | - Bin Yang
- Bioproducts, Sciences and Engineering Laboratory, Department of Biological Systems Engineering, Washington State University, Richland, WA 99354 USA
| | - Wei-Jun Qian
- Biological Sciences Division and Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, WA 99352 USA
| | - Murillo Gabriel
- Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, Jiangsu China
| | - Jianzhong Sun
- Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, Jiangsu China
| |
Collapse
|
16
|
Zhang Y, Sugai T, Yamamoto T, Yamamoto N, Kutsumura N, Einaga Y, Nishiyama S, Saitoh T, Nagase H. Oxidative Cleavage of the Acyl‐Carbon Bond in Phenylacetone with Electrogenerated Superoxide Anions. ChemElectroChem 2018. [DOI: 10.1002/celc.201801308] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Yan Zhang
- Graduate School of Pure and Applied Sciences University of Tsukuba Tennodai 1-1-1, Tsukuba Ibaraki 305-8571 Japan
| | - Tomoya Sugai
- International Institute for Integrative Sleep Medicine (WPI-IIIS) University of Tsukuba Tennodai 1-1-1, Tsukuba Ibaraki 305-8575 Japan
| | - Takashi Yamamoto
- Department of Chemistry Keio University Hiyoshi 3-14-1 Yokohama 223-8522 Japan
| | - Naoshi Yamamoto
- International Institute for Integrative Sleep Medicine (WPI-IIIS) University of Tsukuba Tennodai 1-1-1, Tsukuba Ibaraki 305-8575 Japan
| | - Noriki Kutsumura
- International Institute for Integrative Sleep Medicine (WPI-IIIS) University of Tsukuba Tennodai 1-1-1, Tsukuba Ibaraki 305-8575 Japan
| | - Yasuaki Einaga
- Department of Chemistry Keio University Hiyoshi 3-14-1 Yokohama 223-8522 Japan
- JST-ACCEL Gobancho, Chiyoda-ku Tokyo 102-0076 Japan
| | - Shigeru Nishiyama
- Department of Chemistry Keio University Hiyoshi 3-14-1 Yokohama 223-8522 Japan
| | - Tsuyoshi Saitoh
- International Institute for Integrative Sleep Medicine (WPI-IIIS) University of Tsukuba Tennodai 1-1-1, Tsukuba Ibaraki 305-8575 Japan
| | - Hiroshi Nagase
- Graduate School of Pure and Applied Sciences University of Tsukuba Tennodai 1-1-1, Tsukuba Ibaraki 305-8571 Japan
- International Institute for Integrative Sleep Medicine (WPI-IIIS) University of Tsukuba Tennodai 1-1-1, Tsukuba Ibaraki 305-8575 Japan
| |
Collapse
|
17
|
Manna RN, Malakar T, Jana B, Paul A. Unraveling the Crucial Role of Single Active Water Molecule in the Oxidative Cleavage of Aliphatic C–C Bond of 2,4′-Dihydroxyacetophenone Catalyzed by 2,4′-Dihydroxyacetophenone Dioxygenase Enzyme: A Quantum Mechanics/Molecular Mechanics Investigation. ACS Catal 2018. [DOI: 10.1021/acscatal.8b03201] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Rabindra Nath Manna
- Department of Physical Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
| | - Tanmay Malakar
- Raman Center for Atomic, Molecular, and Optical Science, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Biman Jana
- Department of Physical Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
| | - Ankan Paul
- Raman Center for Atomic, Molecular, and Optical Science, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| |
Collapse
|
18
|
Liu CH, Wang Z, Xiao LY, Mukadas, Zhu DS, Zhao YL. Acid/Base-Co-catalyzed Formal Baeyer–Villiger Oxidation Reaction of Ketones: Using Molecular Oxygen as the Oxidant. Org Lett 2018; 20:4862-4866. [DOI: 10.1021/acs.orglett.8b02006] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Chun-Hua Liu
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Faculty of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Zhuo Wang
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Faculty of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Li-Yun Xiao
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Faculty of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Mukadas
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Faculty of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Dong-Sheng Zhu
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Faculty of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Yu-Long Zhao
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Faculty of Chemistry, Northeast Normal University, Changchun 130024, China
| |
Collapse
|
19
|
Ramasubramanian R, Anandababu K, Kumar M, Mayilmurugan R. Nickel(ii) complexes of a 3N ligand as a model for diketone cleaving unusual nickel(ii)-dioxygenase enzymes. Dalton Trans 2018; 47:4049-4053. [PMID: 29488521 DOI: 10.1039/c7dt04739h] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Diketone substrate bound nickel(ii) complexes of 2,6-bis(1-methylbenzimidazolyl)pyridine have been synthesized and characterized as relevant active site models for unusual diketone cleaving Ni(ii)-dependent enzymes Ni-ARD and DKDO. The average Ni-Npy/benzim bond distances (2.050-2.107 Å) of model complexes are almost identical to the Ni-NHis bond distances of NiII-ARD (2.02-2.19 Å). The reaction of these adducts with dioxygen exhibited C-C cleavage with the rate of kO2, 5.24-73.71 × 10-3 M-1 s-1. The phenyl substituted adduct regioselectively elicits 52% of benzoic acid as the major product.
Collapse
Affiliation(s)
- Ramamoorthy Ramasubramanian
- Bioinorganic Chemistry Laboratory/Physical Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai 625021, Tamilnadu, India.
| | - Karunanithi Anandababu
- Bioinorganic Chemistry Laboratory/Physical Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai 625021, Tamilnadu, India.
| | - Mukesh Kumar
- Radiation Biology and Health Sciences Division, Bhabha Atomic Research Centre, Mumbai, Maharashtra-400 085, India
| | - Ramasamy Mayilmurugan
- Bioinorganic Chemistry Laboratory/Physical Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai 625021, Tamilnadu, India.
| |
Collapse
|
20
|
Reddy CN, Krishna NH, Reddy VG, Alarifi A, Kamal A. Metal-Free Aerobic Oxidative C−C Bond Cleavage between the Carbonyl Carbon and the α-Carbon of α-Azido Ketones: A Novel Synthesis of N-Alkylated Benzamides. ASIAN J ORG CHEM 2017. [DOI: 10.1002/ajoc.201700329] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Chada Narsimha Reddy
- Division of Medicinal Chemistry and Biotechnology; CSIR-Indian Institute of Chemical Technology; Hyderabad 500007 India
| | - Namballa Hari Krishna
- Division of Medicinal Chemistry and Biotechnology; CSIR-Indian Institute of Chemical Technology; Hyderabad 500007 India
- Department of Medicinal Chemistry; National Institute of Pharmaceutical Education and Research; Hyderabad 500036 India
| | - V. Ganga Reddy
- Division of Medicinal Chemistry and Biotechnology; CSIR-Indian Institute of Chemical Technology; Hyderabad 500007 India
| | - Abdullah Alarifi
- Chemistry Department; College of Science; King Saud University; Riyadh 11451 Saudi Arabia
| | - Ahmed Kamal
- Division of Medicinal Chemistry and Biotechnology; CSIR-Indian Institute of Chemical Technology; Hyderabad 500007 India
- Chemistry Department; College of Science; King Saud University; Riyadh 11451 Saudi Arabia
- Department of Medicinal Chemistry; National Institute of Pharmaceutical Education and Research; Hyderabad 500036 India
| |
Collapse
|
21
|
Kumar SC, Ghosh AK, Chen JD, Ghosh R. Structurally characterized mononuclear Mn(II) complex: Functional model for catecholase and phenoxazinone synthase activities. Inorganica Chim Acta 2017. [DOI: 10.1016/j.ica.2017.04.043] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
|
22
|
Digwal CS, Yadav U, Ramya PVS, Sana S, Swain B, Kamal A. Vanadium-Catalyzed Oxidative C(CO)–C(CO) Bond Cleavage for C–N Bond Formation: One-Pot Domino Transformation of 1,2-Diketones and Amidines into Imides and Amides. J Org Chem 2017; 82:7332-7345. [DOI: 10.1021/acs.joc.7b00950] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Chander Singh Digwal
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Balanagar, Hyderabad 500037, India
| | - Upasana Yadav
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Balanagar, Hyderabad 500037, India
| | - P. V. Sri Ramya
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Balanagar, Hyderabad 500037, India
| | - Sravani Sana
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Balanagar, Hyderabad 500037, India
| | - Baijayantimala Swain
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Balanagar, Hyderabad 500037, India
| | - Ahmed Kamal
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Balanagar, Hyderabad 500037, India
| |
Collapse
|
23
|
Dithioester-enabled chemodivergent synthesis of acids, amides and isothiazoles via C C bond cleavage and C O/C N/C S bond formations under metal- and catalyst-free conditions. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.05.064] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
24
|
Wang M, Lu J, Li L, Li H, Liu H, Wang F. Oxidative C(OH) C bond cleavage of secondary alcohols to acids over a copper catalyst with molecular oxygen as the oxidant. J Catal 2017. [DOI: 10.1016/j.jcat.2017.02.017] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
|
25
|
Balakrishnan C, Theetharappan M, Kowsalya P, Natarajan S, Neelakantan M, Mariappan S. Biocatalysis, DNA–protein interactions, cytotoxicity and molecular docking of Cu(II), Ni(II), Zn(II) and V(IV) Schiff base complexes. Appl Organomet Chem 2017. [DOI: 10.1002/aoc.3776] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Chithiraivel Balakrishnan
- Chemistry Research CentreNational Engineering College K. R. Nagar, Kovilpatti 628503 Thoothukudi District Tamil Nadu India
| | - M. Theetharappan
- Chemistry Research CentreNational Engineering College K. R. Nagar, Kovilpatti 628503 Thoothukudi District Tamil Nadu India
| | - P. Kowsalya
- Chemistry Research CentreNational Engineering College K. R. Nagar, Kovilpatti 628503 Thoothukudi District Tamil Nadu India
| | - Satheesh Natarajan
- Department of Pharmacy, School of Health SciencesKwazulu Natal University Durban 4001 South Africa
| | - M.A. Neelakantan
- Chemistry Research CentreNational Engineering College K. R. Nagar, Kovilpatti 628503 Thoothukudi District Tamil Nadu India
| | - S.S. Mariappan
- Chemistry Research CentreNational Engineering College K. R. Nagar, Kovilpatti 628503 Thoothukudi District Tamil Nadu India
| |
Collapse
|
26
|
Bhattacharya S, Rahaman R, Chatterjee S, Paine TK. Aliphatic C-C Bond Cleavage in α-Hydroxy Ketones by a Dioxygen-Derived Nucleophilic Iron-Oxygen Oxidant. Chemistry 2017; 23:3815-3818. [PMID: 28128864 DOI: 10.1002/chem.201605672] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2016] [Indexed: 11/06/2022]
Abstract
A nucleophilic iron-oxygen oxidant, formed in situ in the reaction between an iron(II)-benzilate complex and O2 , oxidatively cleaves the aliphatic C-C bonds of α-hydroxy ketones. In the cleavage reaction, α-hydroxy ketones without any α-C-H bond afford a 1:1 mixture of carboxylic acid and ketone. Isotope labeling studies established that one of the oxygen atoms from dioxygen is incorporated into the carboxylic acid product. Furthermore, the iron(II) complex cleaves an aliphatic C-C bond of 17-α-hydroxyprogesterone affording androstenedione and acetic acid. The O2 -dependent aliphatic C-C bond cleavage of α-hydroxy ketones containing no α-C-H bond bears similarity to the lyase activity of the heme enzyme, cytochrome P450 17A1 (CYP17A1).
Collapse
Affiliation(s)
- Shrabanti Bhattacharya
- Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Jadavpur, Kolkata, 700032, India
| | - Rubina Rahaman
- Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Jadavpur, Kolkata, 700032, India
| | - Sayanti Chatterjee
- Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Jadavpur, Kolkata, 700032, India
| | - Tapan K Paine
- Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Jadavpur, Kolkata, 700032, India
| |
Collapse
|
27
|
Liu H, Wang M, Li H, Luo N, Xu S, Wang F. New protocol of copper-catalyzed oxidative C(CO) C bond cleavage of aryl and aliphatic ketones to organic acids using O2 as the terminal oxidant. J Catal 2017. [DOI: 10.1016/j.jcat.2016.12.016] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
28
|
Zhang S, Wang X, Liu Y. Cleavage mechanism of the aliphatic C–C bond catalyzed by 2,4′-dihydroxyacetophenone dioxygenase from Alcaligenes sp. 4HAP: a QM/MM study. Catal Sci Technol 2017. [DOI: 10.1039/c6cy02553f] [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
Calculations suggest that the reactant complex may firstly undergo a triplet–quintet crossing to initiate the reaction and then the subsequent chemistry occurs on the multiple-states surfaces. The key C–C bond cleavage is accompanied by an insertion reaction of oxygen radical.
Collapse
Affiliation(s)
- Shujun Zhang
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan
- China
| | - Xiya Wang
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan
- China
| | - Yongjun Liu
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan
- China
| |
Collapse
|
29
|
Sarma MJ, Borah AJ, Rajbongshi KK, Phukan P. Formation of new C–O and C–N bonds via base promoted Csp2–Csp3 bond cleavage of α-nitro ketone. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.11.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
30
|
Rahaman R, Paria S, Paine TK. Aliphatic C–C Bond Cleavage of α-Hydroxy Ketones by Non-Heme Iron(II) Complexes: Mechanistic Insight into the Reaction Catalyzed by 2,4′-Dihydroxyacetophenone Dioxygenase. Inorg Chem 2015; 54:10576-86. [PMID: 26536067 DOI: 10.1021/acs.inorgchem.5b01235] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Rubina Rahaman
- Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Sayantan Paria
- Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Tapan Kanti Paine
- Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| |
Collapse
|
31
|
Wang M, Lu J, Ma J, Zhang Z, Wang F. Cuprous Oxide Catalyzed Oxidative CC Bond Cleavage for CN Bond Formation: Synthesis of Cyclic Imides from Ketones and Amines. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201508071] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Min Wang
- State Key Laboratory of Catalysis (SKLC), Dalian National Laboratory for Clean Energy (DNL), Dalian Institute of Chemical Physics (DICP), Chinese Academy of Sciences, Dalian 116023 (China)
| | - Jianmin Lu
- State Key Laboratory of Catalysis (SKLC), Dalian National Laboratory for Clean Energy (DNL), Dalian Institute of Chemical Physics (DICP), Chinese Academy of Sciences, Dalian 116023 (China)
| | - Jiping Ma
- State Key Laboratory of Catalysis (SKLC), Dalian National Laboratory for Clean Energy (DNL), Dalian Institute of Chemical Physics (DICP), Chinese Academy of Sciences, Dalian 116023 (China)
| | - Zhe Zhang
- State Key Laboratory of Catalysis (SKLC), Dalian National Laboratory for Clean Energy (DNL), Dalian Institute of Chemical Physics (DICP), Chinese Academy of Sciences, Dalian 116023 (China)
| | - Feng Wang
- State Key Laboratory of Catalysis (SKLC), Dalian National Laboratory for Clean Energy (DNL), Dalian Institute of Chemical Physics (DICP), Chinese Academy of Sciences, Dalian 116023 (China)
| |
Collapse
|
32
|
Wang M, Lu J, Ma J, Zhang Z, Wang F. Cuprous Oxide Catalyzed Oxidative CC Bond Cleavage for CN Bond Formation: Synthesis of Cyclic Imides from Ketones and Amines. Angew Chem Int Ed Engl 2015; 54:14061-5. [DOI: 10.1002/anie.201508071] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2015] [Indexed: 12/17/2022]
|
33
|
Fan W, Yang Y, Lei J, Jiang Q, Zhou W. Copper-Catalyzed N-Benzoylation of Amines via Aerobic C–C Bond Cleavage. J Org Chem 2015; 80:8782-9. [DOI: 10.1021/acs.joc.5b01670] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Wenyou Fan
- College of Chemical Engineering, Xiangtan University, Xiangtan 411105, China
| | - Youqing Yang
- College of Chemical Engineering, Xiangtan University, Xiangtan 411105, China
| | - Jianhua Lei
- College of Chemical Engineering, Xiangtan University, Xiangtan 411105, China
| | - Qijian Jiang
- College of Chemical Engineering, Xiangtan University, Xiangtan 411105, China
| | - Wang Zhou
- College of Chemical Engineering, Xiangtan University, Xiangtan 411105, China
| |
Collapse
|
34
|
Zhou W, Fan W, Jiang Q, Liang YF, Jiao N. Copper-Catalyzed Aerobic Oxidative C–C Bond Cleavage of Unstrained Ketones with Air and Amines. Org Lett 2015; 17:2542-5. [DOI: 10.1021/acs.orglett.5b01114] [Citation(s) in RCA: 73] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Wang Zhou
- College
of Chemical Engineering, Xiangtan University, Xiangtan 411105, China
| | - Wenyou Fan
- College
of Chemical Engineering, Xiangtan University, Xiangtan 411105, China
| | - Qijian Jiang
- College
of Chemical Engineering, Xiangtan University, Xiangtan 411105, China
| | - Yu-Feng Liang
- State
Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical
Sciences, Peking University, Xue Yuan Road 38, Beijing 100191, China
| | - Ning Jiao
- State
Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical
Sciences, Peking University, Xue Yuan Road 38, Beijing 100191, China
| |
Collapse
|
35
|
Sheet D, Bhattacharya S, Paine TK. Dioxygen activation and two consecutive oxidative decarboxylations of phenylpyruvate by nonheme iron(II) complexes: functional models of hydroxymandelate synthase (HMS) and CloR. Chem Commun (Camb) 2015; 51:7681-4. [PMID: 25850011 DOI: 10.1039/c5cc01652e] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two mononuclear iron(ii)-phenylpyruvate complexes of monoanionic facial N3 ligands are reported to react with dioxygen to undergo two consecutive oxidative decarboxylation steps via an iron-mandelate complex mimicking the function of HMS and CloR.
Collapse
Affiliation(s)
- Debobrata Sheet
- Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, 2A&2B Raja S. C. Mullick Road, Jadavpur, Kolkata-700032, India.
| | | | | |
Collapse
|
36
|
Liu H, Feng M, Jiang X. Unstrained CarbonCarbon Bond Cleavage. Chem Asian J 2014; 9:3360-89. [DOI: 10.1002/asia.201402591] [Citation(s) in RCA: 98] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2014] [Indexed: 11/06/2022]
|
37
|
Keegan R, Lebedev A, Erskine P, Guo J, Wood SP, Hopper DJ, Rigby SEJ, Cooper JB. Structure of the 2,4'-dihydroxyacetophenone dioxygenase from Alcaligenes sp. 4HAP. ACTA CRYSTALLOGRAPHICA. SECTION D, BIOLOGICAL CRYSTALLOGRAPHY 2014; 70:2444-54. [PMID: 25195757 PMCID: PMC4219425 DOI: 10.1107/s1399004714015053] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/04/2014] [Accepted: 06/26/2014] [Indexed: 11/11/2022]
Abstract
The enzyme 2,4'-dihydroxyacetophenone dioxygenase (DAD) catalyses the conversion of 2,4'-dihydroxyacetophenone to 4-hydroxybenzoic acid and formic acid with the incorporation of molecular oxygen. Whilst the vast majority of dioxygenases cleave within the aromatic ring of the substrate, DAD is very unusual in that it is involved in C-C bond cleavage in a substituent of the aromatic ring. There is evidence that the enzyme is a homotetramer of 20.3 kDa subunits, each containing nonhaem iron, and its sequence suggests that it belongs to the cupin family of dioxygenases. In this paper, the first X-ray structure of a DAD enzyme from the Gram-negative bacterium Alcaligenes sp. 4HAP is reported, at a resolution of 2.2 Å. The structure establishes that the enzyme adopts a cupin fold, forming dimers with a pronounced hydrophobic interface between the monomers. The catalytic iron is coordinated by three histidine residues (76, 78 and 114) within a buried active-site cavity. The iron also appears to be tightly coordinated by an additional ligand which was putatively assigned as a carbonate dianion since this fits the electron density optimally, although it might also be the product formate. The modelled carbonate is located in a position which is highly likely to be occupied by the α-hydroxyketone group of the bound substrate during catalysis. Modelling of a substrate molecule in this position indicates that it will interact with many conserved amino acids in the predominantly hydrophobic active-site pocket where it undergoes peroxide radical-mediated heterolysis.
Collapse
Affiliation(s)
- R. Keegan
- STFC Rutherford Appleton Laboratory, RAL, Harwell Oxford, Didcot OX11 0FA, England
| | - A. Lebedev
- STFC Rutherford Appleton Laboratory, RAL, Harwell Oxford, Didcot OX11 0FA, England
| | - P. Erskine
- Laboratory of Protein Crystallography, Centre for Amyloidosis and Acute Phase Proteins, UCL Division of Medicine (Royal Free Campus), Rowland Hill Street, London NW3 2PF, England
| | - J. Guo
- Laboratory of Protein Crystallography, Centre for Amyloidosis and Acute Phase Proteins, UCL Division of Medicine (Royal Free Campus), Rowland Hill Street, London NW3 2PF, England
| | - S. P. Wood
- Laboratory of Protein Crystallography, Centre for Amyloidosis and Acute Phase Proteins, UCL Division of Medicine (Royal Free Campus), Rowland Hill Street, London NW3 2PF, England
| | - D. J. Hopper
- Institute of Biological, Environmental and Rural Sciences, Aberystwyth University, Penglais, Aberystwyth SY23 3DA, Wales
| | - S. E. J. Rigby
- Faculty of Life Sciences, Manchester Institute of Biotechnology, University of Manchester, 131 Princess Street, Manchester M1 7DN, England
| | - J. B. Cooper
- Laboratory of Protein Crystallography, Centre for Amyloidosis and Acute Phase Proteins, UCL Division of Medicine (Royal Free Campus), Rowland Hill Street, London NW3 2PF, England
| |
Collapse
|
38
|
Feng P, Sun X, Su Y, Li X, Zhang L, Shi X, Jiao N. Ceric Ammonium Nitrate (CAN) Catalyzed Modification of Ketones via Two C–C Bond Cleavages with the Retention of the Oxo-Group. Org Lett 2014; 16:3388-91. [PMID: 24906031 DOI: 10.1021/ol5014476] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Peng Feng
- State
Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical
Sciences, Peking University, Xue Yuan Road 38, Beijing 100191, China
| | - Xiang Sun
- State
Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical
Sciences, Peking University, Xue Yuan Road 38, Beijing 100191, China
| | - Yijin Su
- C.
Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, West Virginia 26506, United States
| | - Xinyao Li
- State
Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical
Sciences, Peking University, Xue Yuan Road 38, Beijing 100191, China
| | - Li−He Zhang
- State
Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical
Sciences, Peking University, Xue Yuan Road 38, Beijing 100191, China
| | - Xiaodong Shi
- C.
Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, West Virginia 26506, United States
| | - Ning Jiao
- State
Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical
Sciences, Peking University, Xue Yuan Road 38, Beijing 100191, China
- State
Key Laboratory of Organometallic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
| |
Collapse
|
39
|
Banerjee S, Halder P, Paine TK. Probing the Reactivity of Redox-Active 2-Aminophenolates on Iron Complexes of a Carbanionic N3C Donor Ligand. Z Anorg Allg Chem 2014. [DOI: 10.1002/zaac.201300630] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
40
|
Synthesis of Bis(heteroaryl) Ketones by Removal of Benzylic CHR and CO Groups. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201308785] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
|
41
|
Maji A, Rana S, Akanksha, Maiti D. Synthesis of bis(heteroaryl) ketones by removal of benzylic CHR and CO groups. Angew Chem Int Ed Engl 2014; 53:2428-32. [PMID: 24481978 DOI: 10.1002/anie.201308785] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2013] [Revised: 12/10/2013] [Indexed: 12/20/2022]
Abstract
A copper-catalyzed method for synthesis of diaryl ketones (Ar-CO-Ar') through removal of benzylic -CH2-, -CO-, and -CHR- groups from Ar-CO-CXR-Ar' has been discovered. A number of symmetrical and unsymmetrical heterocyclic ketones, which are usually difficult to synthesize, can be prepared in good to excellent yields. This method was applied to the synthesis of the nonsteroidal anti-inflammatory drug suprofen (47% yield over three steps). Based on preliminary mechanistic and kinetic studies, an active Cu/O2 species is proposed to mediate the rearrangement reaction.
Collapse
Affiliation(s)
- Arun Maji
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400 076 (India)
| | | | | | | |
Collapse
|
42
|
Chakraborty P, Majumder S, Jana A, Mohanta S. Syntheses, structures, catecholase activity, spectroscopy and electrochemistry of a series of manganese(III) complexes: Role of auxiliary anionic ligand on catecholase activity. Inorganica Chim Acta 2014. [DOI: 10.1016/j.ica.2013.10.013] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
43
|
Liu J, Du Z, Lu T, Xu J. Conversion of levulinate into succinate through catalytic oxidative carbon-carbon bond cleavage with dioxygen. CHEMSUSCHEM 2013; 6:2255-2258. [PMID: 23922234 DOI: 10.1002/cssc.201300325] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2013] [Indexed: 06/02/2023]
Abstract
Grand Cleft Oxo: Levulinate, available from biomass, is oxidized into succinate through manganese(III)-catalyzed selective cleavage of CC bonds with molecular oxygen. In addition to levulinate, a wide range of aliphatic methyl ketones also undergo oxidative CC bond cleavage at the carbonyl group. This procedure offers a route to valuable dicarboxylic acids from biomass resources by nonfermentive approaches.
Collapse
Affiliation(s)
- Junxia Liu
- Dalian National Laboratory for Clean Energy, State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023 (PR China); University of the Chinese Academy of Sciences, Beijing 100049 (PR China)
| | | | | | | |
Collapse
|
44
|
|
45
|
Zhang L, Bi X, Guan X, Li X, Liu Q, Barry BD, Liao P. Chemoselective Oxidative C(CO)C(methyl) Bond Cleavage of Methyl Ketones to Aldehydes Catalyzed by CuI with Molecular Oxygen. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201305010] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
46
|
Zhang L, Bi X, Guan X, Li X, Liu Q, Barry BD, Liao P. Chemoselective Oxidative C(CO)C(methyl) Bond Cleavage of Methyl Ketones to Aldehydes Catalyzed by CuI with Molecular Oxygen. Angew Chem Int Ed Engl 2013; 52:11303-7. [DOI: 10.1002/anie.201305010] [Citation(s) in RCA: 158] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2013] [Revised: 08/08/2013] [Indexed: 12/21/2022]
|
47
|
Chatterjee S, Sheet D, Paine TK. Catalytic and regiospecific extradiol cleavage of catechol by a biomimetic iron complex. Chem Commun (Camb) 2013; 49:10251-3. [DOI: 10.1039/c3cc44124e] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
|