1
|
Soam P, Tyagi V. Investigation of Electrocatalytic Oxidative Coupling of Arylamines for the Selective Synthesis of Azo Aromatics. J Org Chem 2024; 89:14762-14769. [PMID: 39340444 DOI: 10.1021/acs.joc.4c01384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/30/2024]
Abstract
An electrochemical oxidative coupling of anilines to selectively provide azo aromatic compounds by using mild reaction conditions has been investigated. Further, the generality and feasibility of the developed protocol were showcased by synthesizing differently substituted azo compounds in moderate to good isolated yields. Additionally, different control experiments were performed to investigate the reaction mechanism. These experiments indicated the formation of hydrazobenzene as an intermediate while ruling out the possibility of nitrobenzene or nitroso-benzene formation during this transformation.
Collapse
Affiliation(s)
- Pooja Soam
- Department of Chemistry and Biochemistry, Thapar Institute of Engineering and Technology, Patiala 147004, Punjab, India
| | - Vikas Tyagi
- Department of Chemistry and Biochemistry, Thapar Institute of Engineering and Technology, Patiala 147004, Punjab, India
- Centre of Excellence for Emerging Materials, Thapar Institute of Engineering and Technology, Patiala 147004, Punjab, India
| |
Collapse
|
2
|
Hayward D, Goddard ZR, Cominetti MMD, Searcey M, Beekman AM. Light-activated azobenzene peptide inhibitor of the PD-1/PD-L1 interaction. Chem Commun (Camb) 2024; 60:8228-8231. [PMID: 39007209 PMCID: PMC11293026 DOI: 10.1039/d4cc01249f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Accepted: 07/05/2024] [Indexed: 07/16/2024]
Abstract
Inhibiting the PD-1/PD-L1 protein-protein interaction is a key immunotherapy for cancer. Antibodies dominate the clinical space but are costly, with limited applicability and immune side effects. We developed a photo-controlled azobenzene peptide that selectively inhibits the PD-1/PD-L1 interaction when in the cis isomer only. Activity is demonstrated in in vitro and cellular assays.
Collapse
Affiliation(s)
- Deanne Hayward
- School of Pharmacy, University of East Anglia, Norwich Research Park, Norwich, Norfolk, NR47TJ, UK.
| | - Zoë R Goddard
- School of Pharmacy, University of East Anglia, Norwich Research Park, Norwich, Norfolk, NR47TJ, UK.
| | - Marco M D Cominetti
- School of Pharmacy, University of East Anglia, Norwich Research Park, Norwich, Norfolk, NR47TJ, UK.
| | - Mark Searcey
- School of Pharmacy, University of East Anglia, Norwich Research Park, Norwich, Norfolk, NR47TJ, UK.
| | - Andrew M Beekman
- School of Pharmacy, University of East Anglia, Norwich Research Park, Norwich, Norfolk, NR47TJ, UK.
| |
Collapse
|
3
|
Griwatz JH, Campi CE, Kunz A, Wegner HA. In-situ Oxidation and Coupling of Anilines towards Unsymmetric Azobenzenes Using Flow Chemistry. CHEMSUSCHEM 2024; 17:e202301714. [PMID: 38240749 DOI: 10.1002/cssc.202301714] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 01/17/2024] [Indexed: 02/10/2024]
Abstract
Molecular switches, especially azobenzenes, are used in numerous applications, such as molecular solar thermal storage (MOST) systems and photopharmacology. The Baeyer-Mills reaction of anilines and nitrosobenzenes has been established as an efficient synthetic method for non-symmetric azobenzenes. However, nitrosobenzenes are not stable, depending on their substitution pattern and pose a health risk. An in-situ oxidation of anilines with Oxone® was optimized under continuous flow conditions avoiding isolation and contact. The in-situ generated nitrosobenzene derivatives were subjected to a telescoped Baeyer-Mills reaction in flow. That way azobenzenes with a broad substituent spectrum were made accessible.
Collapse
Affiliation(s)
- Jan H Griwatz
- Institute of Organic Chemistry, Justus Liebig University Giessen, Heinrich-Buff-Ring 17, 35392, Giessen, Germany
- Center for Materials Research, Justus Liebig University Giessen, Heinrich-Buff-Ring 16, 35392, Giessen, Germany
| | - Chiara E Campi
- Institute of Organic Chemistry, Justus Liebig University Giessen, Heinrich-Buff-Ring 17, 35392, Giessen, Germany
| | - Anne Kunz
- Institute of Organic Chemistry, Justus Liebig University Giessen, Heinrich-Buff-Ring 17, 35392, Giessen, Germany
- Center for Materials Research, Justus Liebig University Giessen, Heinrich-Buff-Ring 16, 35392, Giessen, Germany
| | - Hermann A Wegner
- Institute of Organic Chemistry, Justus Liebig University Giessen, Heinrich-Buff-Ring 17, 35392, Giessen, Germany
- Center for Materials Research, Justus Liebig University Giessen, Heinrich-Buff-Ring 16, 35392, Giessen, Germany
| |
Collapse
|
4
|
Qiao H, Zhao K, Zhu X, Xu X, Wang S, Yang L, Wang C, Zhong L, Ma B, Yang D, Xing P, Liu G, Jiao M. Photocatalyzed C3-H Nitrosylation of Imidazo[1,2- a]pyridine under Continuous Flow and External Photocatalyst-, Oxidant-, and Additive-Free Conditions. J Org Chem 2024. [PMID: 38753574 DOI: 10.1021/acs.joc.4c00173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/18/2024]
Abstract
This study reports a protocol for the highly regioselective photocatalyzed C-H nitrosylation of imidazo[1,2-a]pyridine scaffolds at the C3 position under a combination of visible-light irradiation and continuous flow without any external photocatalyst. This protocol involves mild and safe conditions and shows good tolerance to air and water along with excellent functional group compatibility and site selectivity, generating various 3-nitrosoimidazo[1,2-a]pyridines in excellent yields under photocatalyst-, oxidant-, and additive-free conditions.Notably, the proposed nitrosylation reaction, which introduces the chromophore NO into imidazo[1,2-a]pyridine scaffolds, occurs efficiently under visible-light irradiation without any additional photocatalyst owing to the intense light-absorption characteristics of the nitrosylation products. This study could guide future studies on the development of green organic-synthesis strategies with a wide variety of potential applications.
Collapse
Affiliation(s)
- Huijie Qiao
- School of Materials and Chemical Engineering, Zhongyuan University of Technology, Zhengzhou 450007, P. R. China
- Henan Key Laboratory of Functional Salt Materials, Center for Advanced Materials Research, Zhongyuan University of Technology, Zhengzhou 450007, P. R. China
| | - Kun Zhao
- School of Materials and Chemical Engineering, Zhongyuan University of Technology, Zhengzhou 450007, P. R. China
- Henan Key Laboratory of Functional Salt Materials, Center for Advanced Materials Research, Zhongyuan University of Technology, Zhengzhou 450007, P. R. China
| | - Xilin Zhu
- School of Materials and Chemical Engineering, Zhongyuan University of Technology, Zhengzhou 450007, P. R. China
| | - Xiaoxu Xu
- School of Materials and Chemical Engineering, Zhongyuan University of Technology, Zhengzhou 450007, P. R. China
| | - Shixing Wang
- School of Materials and Chemical Engineering, Zhongyuan University of Technology, Zhengzhou 450007, P. R. China
| | - Liting Yang
- School of Materials and Chemical Engineering, Zhongyuan University of Technology, Zhengzhou 450007, P. R. China
- Henan Key Laboratory of Functional Salt Materials, Center for Advanced Materials Research, Zhongyuan University of Technology, Zhengzhou 450007, P. R. China
| | - Chunyang Wang
- School of Materials and Chemical Engineering, Zhongyuan University of Technology, Zhengzhou 450007, P. R. China
| | - Lulu Zhong
- School of Materials and Chemical Engineering, Zhongyuan University of Technology, Zhengzhou 450007, P. R. China
| | - Baiwei Ma
- School of Materials and Chemical Engineering, Zhongyuan University of Technology, Zhengzhou 450007, P. R. China
- Henan Key Laboratory of Functional Salt Materials, Center for Advanced Materials Research, Zhongyuan University of Technology, Zhengzhou 450007, P. R. China
| | - Dehong Yang
- School of Materials and Chemical Engineering, Zhongyuan University of Technology, Zhengzhou 450007, P. R. China
| | - Peizhi Xing
- Henan Bio-based material Industry Research Institute Co., LTD, Puyang 457001, P. R. China
| | - Guoqun Liu
- School of Materials and Chemical Engineering, Zhongyuan University of Technology, Zhengzhou 450007, P. R. China
| | - Mingli Jiao
- School of Materials and Chemical Engineering, Zhongyuan University of Technology, Zhengzhou 450007, P. R. China
| |
Collapse
|
5
|
Karakaya I, Mart M, Altundas R. Sustainable and Environmentally Friendly Approach for the Synthesis of Azoxybenzenes from the Reductive Dimerization of Nitrosobenzenes and the Oxidation of Anilines. ACS OMEGA 2024; 9:11494-11499. [PMID: 38496929 PMCID: PMC10938426 DOI: 10.1021/acsomega.3c08328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Revised: 02/06/2024] [Accepted: 02/13/2024] [Indexed: 03/19/2024]
Abstract
This study demonstrates a comparative synthesis of azoxybenzenes through the reductive dimerization of nitrosobenzenes and the oxidation of anilines. Utilizing the cost-effective DIPEA catalyst at room temperature with water as a green solvent, the one-pot procedure involves in situ generation of nitrosobenzene derivatives from anilines in the presence of oxone, followed by DIPEA addition. Both methods yield azoxybenzenes with high selectivity, showcasing the versatility of DIPEA in facilitating the synthesis of azoxybenzenes with various substituents in ortho, meta, and para positions, encompassing electron-donating and electron-withdrawing groups. The use of DIPEA proves pivotal in achieving moderate to high yields, emphasizing its significance in this environmentally friendly synthesis.
Collapse
Affiliation(s)
- Idris Karakaya
- Department of Chemistry,
College of Basic Sciences, Gebze Technical
University, 41400 Gebze, Turkey
| | - Mehmet Mart
- Department of Chemistry,
College of Basic Sciences, Gebze Technical
University, 41400 Gebze, Turkey
| | - Ramazan Altundas
- Department of Chemistry,
College of Basic Sciences, Gebze Technical
University, 41400 Gebze, Turkey
| |
Collapse
|
6
|
Severa L, Santos Hurtado C, Rončević I, Mašát M, Bastien G, Štoček JR, Dračínský M, Houska V, Kaletová E, Garza DJ, Císařová I, Cimatu KLA, Bastl Z, Kaleta J. Regular Arrays of Rod-Shaped Molecular Photoswitches: Synthesis, Preparation, Characterization, and Selective Photoswitching within Mono- and Bilayer Systems. Chemistry 2024; 30:e202302828. [PMID: 37858965 DOI: 10.1002/chem.202302828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 10/16/2023] [Accepted: 10/17/2023] [Indexed: 10/21/2023]
Abstract
We assembled photoresponsive mono- and bilayer systems with well-defined properties from rod-shaped molecules equipped with different photoswitches. Using properly chosen chromophores (diarylethene-based switch and unidirectional light-driven molecular motor), we then selectively targeted layers made of the same types of photoswitches using appropriate monochromatic light. UV-vis analysis confirmed smooth and unrestricted photoisomerization. To achieve this, we synthesized a new class of triptycene-based molecular pedestals adept at forming sturdy Langmuir-Blodgett films on a water-air interface. The films were smoothly transferred to gold and quartz surfaces. Repeated deposition afforded bilayer systems: one layer containing diarylethene-based photoswitches and the other a unidirectional light-driven molecular motor. Structural analysis of both mono- and bilayer systems revealed the molecules to be tilted with carboxylic functions pointing to the surface. At least two different polymorphs differing in monolayer thickness and tilt angle (~40° and ~60°) were identified on the gold surface.
Collapse
Affiliation(s)
- Lukáš Severa
- Institute of Organic Chemistry and Biochemistry of the, Czech Academy of Sciences, Flemingovo nám. 2, 160 00, Prague, Czech Republic
| | - Carina Santos Hurtado
- Institute of Organic Chemistry and Biochemistry of the, Czech Academy of Sciences, Flemingovo nám. 2, 160 00, Prague, Czech Republic
| | - Igor Rončević
- Institute of Organic Chemistry and Biochemistry of the, Czech Academy of Sciences, Flemingovo nám. 2, 160 00, Prague, Czech Republic
| | - Milan Mašát
- Institute of Organic Chemistry and Biochemistry of the, Czech Academy of Sciences, Flemingovo nám. 2, 160 00, Prague, Czech Republic
| | - Guillaume Bastien
- Institute of Organic Chemistry and Biochemistry of the, Czech Academy of Sciences, Flemingovo nám. 2, 160 00, Prague, Czech Republic
| | - Jakub Radek Štoček
- Institute of Organic Chemistry and Biochemistry of the, Czech Academy of Sciences, Flemingovo nám. 2, 160 00, Prague, Czech Republic
| | - Martin Dračínský
- Institute of Organic Chemistry and Biochemistry of the, Czech Academy of Sciences, Flemingovo nám. 2, 160 00, Prague, Czech Republic
| | - Václav Houska
- Institute of Organic Chemistry and Biochemistry of the, Czech Academy of Sciences, Flemingovo nám. 2, 160 00, Prague, Czech Republic
| | - Eva Kaletová
- Institute of Organic Chemistry and Biochemistry of the, Czech Academy of Sciences, Flemingovo nám. 2, 160 00, Prague, Czech Republic
| | - Danielle John Garza
- Department of Chemistry and Biochemistry, Ohio University, Athens, OH 45701, USA
| | - Ivana Císařová
- Department of Inorganic Chemistry, Faculty of Science, Charles University Prague, Hlavova 2030, 128 40, Prague 2, Czech Republic
| | | | - Zdeněk Bastl
- J. Heyrovský Institute of Physical Chemistry of the, Czech Academy of Sciences, Dolejškova 2155/3, 182 23, Prague 8, Czech Republic
| | - Jiří Kaleta
- Institute of Organic Chemistry and Biochemistry of the, Czech Academy of Sciences, Flemingovo nám. 2, 160 00, Prague, Czech Republic
| |
Collapse
|
7
|
Li S, Liu W, Xia XF. Silver-catalyzed nitrosation and nitration of aromatic amides using NOBF 4. Org Biomol Chem 2023; 21:9428-9432. [PMID: 37990946 DOI: 10.1039/d3ob01729j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2023]
Abstract
Divergent aromatic ring nitrosation and nitration of aromatic amides are reported using NOBF4 as the electrophile under silver-catalyzed conditions. The reactions proceed efficiently with a wide range of compatible functionalities providing ortho-position nitrosation products, deacylation nitrosation products, and nitration products from different tertiary and secondary aromatic amides.
Collapse
Affiliation(s)
- Sa Li
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu, 214122, China.
| | - Wentao Liu
- Industry and Information Technology Development Center of Yinan County, Linyi, Shandong, 276300, China
| | - Xiao-Feng Xia
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu, 214122, China.
| |
Collapse
|
8
|
Wirth U, Raabe K, Kalaba P, Keimpema E, Muttenthaler M, König B. Photoswitchable Probes of Oxytocin and Vasopressin. J Med Chem 2023; 66:14853-14865. [PMID: 37857356 PMCID: PMC10641831 DOI: 10.1021/acs.jmedchem.3c01415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Indexed: 10/21/2023]
Abstract
Oxytocin (OT) and vasopressin (VP) are related neuropeptides that regulate many biological processes. In humans, OT and VP act via four G protein-coupled receptors, OTR, V1aR, V1bR, and V2R (VPRs), which are associated with several disorders. To investigate the therapeutic potential of these receptors, particularly in the receptor-dense areas of the brain, molecular probes with a high temporal and spatial resolution are required. Such a spatiotemporal resolution can be achieved by incorporating photochromic moieties into OT and VP. Here, we report the design, synthesis, and (photo)pharmacological characterization of 12 OT- and VP-derived photoprobes using different modification strategies. Despite OT's and VP's sensitivity toward structural changes, we identified two photoprobes with good potency and photoswitch window for investigating the OTR and V1bR. These photoprobes should be of high value for producing cutting-edge photocontrollable peptide probes for the study of dynamic and kinetic receptor activation processes in specific regions of the brain.
Collapse
Affiliation(s)
- Ulrike Wirth
- Institute
of Organic Chemistry, Department of Chemistry and Pharmacy, University of Regensburg, Universitätsstraße 31, 93053 Regensburg, Germany
| | - Konstantin Raabe
- Institute
of Biological Chemistry, Department of Chemistry, University of Vienna, Währinger Straße 38, 1090 Vienna, Austria
| | - Predrag Kalaba
- Institute
of Biological Chemistry, Department of Chemistry, University of Vienna, Währinger Straße 38, 1090 Vienna, Austria
| | - Erik Keimpema
- Medical
University of Vienna, Center for Brain Research, Department of Molecular Neurosciences, Spitalgasse 4, 1090 Vienna, Austria
| | - Markus Muttenthaler
- Institute
of Biological Chemistry, Department of Chemistry, University of Vienna, Währinger Straße 38, 1090 Vienna, Austria
- Institute
for Molecular Bioscience, The University
of Queensland, St. Lucia, 4072, Brisbane, Australia
| | - Burkhard König
- Institute
of Organic Chemistry, Department of Chemistry and Pharmacy, University of Regensburg, Universitätsstraße 31, 93053 Regensburg, Germany
| |
Collapse
|
9
|
Bobrov PS, Kirik SD, Peterson IV, Suboch GA. Regioselective synthesis of novel nitroso-pyrazolylquinoxalines via HOAc-mediated cyclocondensation of 2-hydroxyimino-1,3-diketones with hydrazinylquinoxalines. Org Biomol Chem 2023; 21:3604-3614. [PMID: 37051859 DOI: 10.1039/d3ob00356f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/14/2023]
Abstract
This article describes the regioselective synthesis of novel nitroso-pyrazolylquinoxalines via cyclocondensation of 2-hydroxyimino-1,3-diketones with hydrazinylquinoxalines. Of note, this is the first time that 2-hydroxyimino-1,3-diketones are used as electrophilic reagents to cyclocondensation with hetarylhydrazines. The cyclocondensation proceeded through a hydrazone intermediates formation. A series of novel nitroso-substituted pyrazolylquinoxalines were synthesized by both "one-pot" and "two-step" procedures in up to 86% yields. Importantly, a gram-scale synthesis of nitroso-pyrazolylquinoxalines, their oxidation and reduction were successfully accomplished.
Collapse
Affiliation(s)
- Pavel S Bobrov
- Department of Organic Chemistry and Technology of Organic Substances, Reshetnev Siberian State University of Science and Technology, 31, Krasnoyarskii Rabochii prospekt, Krasnoyarsk 660037, Russian Federation.
| | - Sergei D Kirik
- Department of Inorganic and Physical Chemistry, Siberian Federal University, 79, Svobodny Av., Krasnoyarsk 660041, Russian Federation
- Laboratory of Molecular Spectroscopy and Analysis, Institute of Chemistry and Chemical Technology SB RAS, Federal Research Center 'Krasnoyarsk Science Center SB RAS', 50/24 Akademgorodok, Krasnoyarsk 660036, Russian Federation
| | - Ivan V Peterson
- Laboratory of Molecular Spectroscopy and Analysis, Institute of Chemistry and Chemical Technology SB RAS, Federal Research Center 'Krasnoyarsk Science Center SB RAS', 50/24 Akademgorodok, Krasnoyarsk 660036, Russian Federation
| | - Georgii A Suboch
- Department of Organic Chemistry and Technology of Organic Substances, Reshetnev Siberian State University of Science and Technology, 31, Krasnoyarskii Rabochii prospekt, Krasnoyarsk 660037, Russian Federation.
| |
Collapse
|
10
|
Josa-Culleré L, Llebaria A. Visible-Light-Controlled Histone Deacetylase Inhibitors for Targeted Cancer Therapy. J Med Chem 2023; 66:1909-1927. [PMID: 36654474 PMCID: PMC9949698 DOI: 10.1021/acs.jmedchem.2c01713] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
The lack of selectivity of anticancer drugs limits current chemotherapy. Light-activatable drugs, whose activity can be precisely controlled with external light, could provide a more localized action of the drugs in the tumor, thus decreasing side effects and increasing efficacy. Herein, we introduce a series of photoswitchable azobenzene histone deacetylase inhibitors (HDACis) whose activity can be controlled by external visible light. Initial HDACis isomerized under ultraviolet light and were up to >50-fold more active under illumination than in the dark in enzyme assays. These were then optimized toward compounds responding to more permeable and less harmful green light by introducing o-halogen atoms into the azobenzene. Selected compounds decreased cell viability only under illumination in four different cancer cell lines. Overall, we present photoswitchable HDACis with optimized activation wavelengths, which inhibit enzyme activity and cell viability only upon illumination with visible light, contributing to the still limited toolbox of photoswitchable anticancer drugs.
Collapse
|
11
|
Thakuri A, Banerjee M, Chatterjee A. Protocol for microwave-assisted synthesis of unsymmetrical azo dyes. STAR Protoc 2022; 3:101864. [PMID: 36595940 PMCID: PMC9678771 DOI: 10.1016/j.xpro.2022.101864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Revised: 10/01/2022] [Accepted: 10/25/2022] [Indexed: 11/18/2022] Open
Abstract
Aromatic azo dyes bear immense commercial significance because of their extensive usage in the textile, paint, and food industries. With growing environmental concerns, developing alternative greener approaches for the synthesis of azo dyes is crucial. Herein, we describe a metal-free, microwave (MW)-assisted protocol for rapid access to a large variety of unsymmetrical azo dyes by coupling nitroarenes and aromatic amines. After MW-assisted coupling, the azo dyes are then isolated by precipitation followed by recrystallization to obtain pure azo dyes. For complete details on the use and execution of this protocol, please refer to Thakuri et al. (2022).1.
Collapse
Affiliation(s)
- Ankit Thakuri
- Department of Chemistry, BITS-Pilani, K.K. Birla Goa Campus, NH 17B, Bypass Road, Zuarinagar, Sancoale, Goa 403726, India
| | - Mainak Banerjee
- Department of Chemistry, BITS-Pilani, K.K. Birla Goa Campus, NH 17B, Bypass Road, Zuarinagar, Sancoale, Goa 403726, India,Corresponding author
| | - Amrita Chatterjee
- Department of Chemistry, BITS-Pilani, K.K. Birla Goa Campus, NH 17B, Bypass Road, Zuarinagar, Sancoale, Goa 403726, India,Corresponding author
| |
Collapse
|
12
|
Microwave Assisted Rapid and Sustainable Synthesis of Unsymmetrical Azo Dyes by Coupling of Nitroarenes with Aniline Derivatives. iScience 2022; 25:104497. [PMID: 35721466 PMCID: PMC9198429 DOI: 10.1016/j.isci.2022.104497] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 04/26/2022] [Accepted: 05/25/2022] [Indexed: 11/21/2022] Open
Abstract
Aromatic azo dyes are of immense commercial importance, and the development of greener routes for their synthesis is imperative due to current environmental concerns. In the present study, a microwave-assisted route has been developed for rapid and convenient synthesis of unsymmetrical azo dyes in a single step. In a metal-catalyst-free approach, an aromatic amine was used as an in situ reductant to affect its direct cross-condensation with nitroarenes to afford a variety of dispersed and water-soluble azo dyes. The electronic and substituent effects were thoroughly understood by placing suitable substituents in both nitroarenes and aniline derivatives in competitive reactions. The microwave (MW) method worked better with aniline or electron-rich aromatic amines to prepare a range of unsymmetrical azo dyes in up to 97% yields within a few minutes. The method worked well in the gram-scale synthesis of commercial dye, solvent yellow 7. Microwave-based green synthesis of unsymmetrical azo dyes Catalyst-free, rapid synthesis Gram-scale synthesis of commercial dyes Efficient synthesis of water-soluble dyes
Collapse
|
13
|
He HY, Niikura H, Du YL, Ryan KS. Synthetic and biosynthetic routes to nitrogen-nitrogen bonds. Chem Soc Rev 2022; 51:2991-3046. [PMID: 35311838 DOI: 10.1039/c7cs00458c] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The nitrogen-nitrogen bond is a core feature of diverse functional groups like hydrazines, nitrosamines, diazos, and pyrazoles. Such functional groups are found in >300 known natural products. Such N-N bond-containing functional groups are also found in significant percentage of clinical drugs. Therefore, there is wide interest in synthetic and enzymatic methods to form nitrogen-nitrogen bonds. In this review, we summarize synthetic and biosynthetic approaches to diverse nitrogen-nitrogen-bond-containing functional groups, with a focus on biosynthetic pathways and enzymes.
Collapse
Affiliation(s)
- Hai-Yan He
- Department of Chemistry, University of British Columbia, Vancouver, Canada. .,Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China.
| | - Haruka Niikura
- Department of Chemistry, University of British Columbia, Vancouver, Canada.
| | - Yi-Ling Du
- Institute of Pharmaceutical Biotechnology, Zhejiang University School of Medicine, Hangzhou, China
| | - Katherine S Ryan
- Department of Chemistry, University of British Columbia, Vancouver, Canada.
| |
Collapse
|
14
|
Fischer K, Krahmer J, Tuczek F. Chemically and Light-Driven Coordination-Induced Spin State Switching (CISSS) of a nonheme-iron complex. ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES 2022. [DOI: 10.1515/znb-2022-0011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
The new Fe(II) complex [Fe(trident)(bmik)](ClO4)2 (1) (trident = bis(2-pyridylmethyl)benzylamine and bmik = bis(1-methylimidazole)ketone) exhibits a change of magnetic moment in dichloromethane (DCM) solution upon addition of pyridine which is attributed to the Coordination-Induced Spin State Switching effect (CISSS). By attaching a photoisomerizable azopyridine sidegroup to the tridentate ligand the complex [Fe(azpy-trident)(bmik)](ClO4)2 (2; azpy-trident = [N,N-bis(2-pyridylmethyl)]-3-(3-pyridylazo)benzylamine) is obtained. As detected by Evans NMR spectroscopy, 2 reversibly changes its magnetic moment in homogeneous solution upon photoirradiation which is attributed to intermolecular Light-Driven Coordination-Induced Spin State Switching (LD-CISSS). Further support for this interpretation is inferred from concentration-dependent Evans NMR measurements.
Collapse
Affiliation(s)
- Kim Fischer
- Institut für Anorganische Chemie, Christian-Albrechts-Universität zu Kiel , Max-Eyth-Straße 2, D-24118 Kiel , Germany
| | - Jan Krahmer
- Institut für Anorganische Chemie, Christian-Albrechts-Universität zu Kiel , Max-Eyth-Straße 2, D-24118 Kiel , Germany
| | - Felix Tuczek
- Institut für Anorganische Chemie, Christian-Albrechts-Universität zu Kiel , Max-Eyth-Straße 2, D-24118 Kiel , Germany
| |
Collapse
|
15
|
Frye CW, Egger DT, Kounalis E, Pearce AJ, Cheng Y, Tonks IA. α-Diimine synthesis via titanium-mediated multicomponent diimination of alkynes with C-nitrosos. Chem Sci 2022; 13:1469-1477. [PMID: 35222931 PMCID: PMC8809399 DOI: 10.1039/d1sc06111a] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Accepted: 12/26/2021] [Indexed: 01/04/2023] Open
Abstract
α-Diimines are commonly used as supporting ligands for a variety of transition metal-catalyzed processes, most notably in α-olefin polymerization. They are also precursors to valuable synthetic targets, such as chiral 1,2-diamines. Their synthesis is usually performed through acid-catalyzed condensation of amines with α-diketones. Despite the simplicity of this approach, accessing unsymmetrical α-diimines is challenging. Herein, we report the Ti-mediated intermolecular diimination of alkynes to afford a variety of symmetrical and unsymmetrical α-diimines through the reaction of diazatitanacyclohexadiene intermediates with C-nitrosos. These diazatitanacycles can be readily accessed in situ via the multicomponent coupling of Ti[triple bond, length as m-dash]NR imidos with alkynes and nitriles. The formation of α-diimines is achieved through formal [4 + 2]-cycloaddition of the C-nitroso to the Ti and γ-carbon of the diazatitanacyclohexadiene followed by two subsequent cycloreversion steps to eliminate nitrile and afford the α-diimine and a Ti oxo.
Collapse
Affiliation(s)
- Connor W Frye
- Department of Chemistry, University of Minnesota - Twin Cities 207 Pleasant St SE Minneapolis Minnesota 55455 USA
| | - Dominic T Egger
- Department of Chemistry, University of Minnesota - Twin Cities 207 Pleasant St SE Minneapolis Minnesota 55455 USA
| | - Errikos Kounalis
- Department of Chemistry, University of Minnesota - Twin Cities 207 Pleasant St SE Minneapolis Minnesota 55455 USA
| | - Adam J Pearce
- Department of Chemistry, University of Minnesota - Twin Cities 207 Pleasant St SE Minneapolis Minnesota 55455 USA
| | - Yukun Cheng
- Department of Chemistry, University of Minnesota - Twin Cities 207 Pleasant St SE Minneapolis Minnesota 55455 USA
| | - Ian A Tonks
- Department of Chemistry, University of Minnesota - Twin Cities 207 Pleasant St SE Minneapolis Minnesota 55455 USA
| |
Collapse
|
16
|
Zhai P, Li W, Lin J, Li X, Wei WL, Chen W. Hydrazones as Substrates in the Synthesis of Isoxazolidines via a KOH-Promoted One-Pot Three-Component Cycloaddition with Nitroso Compounds and Olefins. J Org Chem 2021; 86:17710-17721. [PMID: 34842429 DOI: 10.1021/acs.joc.1c01994] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Hydrazones have been employed as the starting materials in a KOH-mediated one-pot three-component cycloaddition with readily accessible nitroso compounds and olefins to construct various isoxazolidines. Compared with diazo compounds as starting materials, this methodology could afford a wider range of products in good to excellent yields and diastereoselectivities for most substrates, and hydrazones are cheaper, more accessible, and safer substrates. The experimental study shows that the choice of suitable hydrazones is crucial.
Collapse
Affiliation(s)
- Pingan Zhai
- College of Biomedical Engineering, Taiyuan University of Technology, 79 West Yingze Street, Taiyuan 030024, People's Republic of China
| | - Wenhui Li
- College of Biomedical Engineering, Taiyuan University of Technology, 79 West Yingze Street, Taiyuan 030024, People's Republic of China
| | - Jianying Lin
- College of Biomedical Engineering, Taiyuan University of Technology, 79 West Yingze Street, Taiyuan 030024, People's Republic of China
| | - Xing Li
- College of Biomedical Engineering, Taiyuan University of Technology, 79 West Yingze Street, Taiyuan 030024, People's Republic of China
| | - Wen-Long Wei
- College of Biomedical Engineering, Taiyuan University of Technology, 79 West Yingze Street, Taiyuan 030024, People's Republic of China
| | - Wenwen Chen
- School of Chemistry and Material Science, Shanxi Normal University, Linfen 041004, People's Republic of China
| |
Collapse
|
17
|
Fúster Fernández I, Hecquet L, Fessner W. Transketolase Catalyzed Synthesis of
N
‐Aryl Hydroxamic Acids. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202101100] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Inés Fúster Fernández
- Institut für Organische Chemie und Biochemie Technische Universität Darmstadt Alarich-Weiss-Str. 4 64287 Darmstadt Germany
| | - Laurence Hecquet
- Institut de Chimie de Clermont-Ferrand CNRS Auvergne Clermont INP Université Clermont Auverne 63000 Clermont-Ferrand France
| | - Wolf‐Dieter Fessner
- Institut für Organische Chemie und Biochemie Technische Universität Darmstadt Alarich-Weiss-Str. 4 64287 Darmstadt Germany
| |
Collapse
|
18
|
|
19
|
Su M, Li T, Shi QX, Xiao H, Bao H, Wan WM. Barbier-Type Nitro/Nitroso Addition Polymerization as a Versatile Approach for Molecular Design of Polyarylamines through C–N Bond Formation. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c01744] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Min Su
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, State Key Laboratory of Structural Chemistry, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou 350002, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Tao Li
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, State Key Laboratory of Structural Chemistry, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou 350002, P. R. China
- College of Environmental Science and Engineering, Engineering Research Center of Polymer Green Recycling of Ministry of Education, Fujian Key Laboratory of Pollution Control &Resource Reuse, Fujian Normal University, Fuzhou 350007, P. R. China
| | - Quan-Xi Shi
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, State Key Laboratory of Structural Chemistry, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou 350002, P. R. China
- College of Chemistry, Fuzhou University, Fuzhou 350108, P. R. China
| | - Hang Xiao
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, State Key Laboratory of Structural Chemistry, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou 350002, P. R. China
- College of Environmental Science and Engineering, Engineering Research Center of Polymer Green Recycling of Ministry of Education, Fujian Key Laboratory of Pollution Control &Resource Reuse, Fujian Normal University, Fuzhou 350007, P. R. China
| | - Hongli Bao
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, State Key Laboratory of Structural Chemistry, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou 350002, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Wen-Ming Wan
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, State Key Laboratory of Structural Chemistry, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou 350002, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| |
Collapse
|
20
|
Sandeep M, Muzaffar-ur-Rehman MD, Chahal K, Rajender Reddy K. Iodine mediated nitrosation of imidazo[1,5-a]N-heteroarenes using TBN ( BuONO) reagent. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.153401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
21
|
Tombari RJ, Tuck JR, Yardeny N, Gingrich PW, Tantillo DJ, Olson DE. Calculated oxidation potentials predict reactivity in Baeyer-Mills reactions. Org Biomol Chem 2021; 19:7575-7580. [PMID: 34524347 PMCID: PMC8462971 DOI: 10.1039/d1ob01450a] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Azobenzenes are widely used as dyes and photochromic compounds, with the Baeyer-Mills reaction serving as the most common method for their preparation. This transformation is often plagued by low yields due to the formation of undesired azoxybenzene. Here, we explore electronic effects dictating the formation of the azoxybenzene side-product. Using calculated oxidation potentials, we were able to predict reaction outcomes and improve reaction efficiency simply by modulating the oxidation potential of the arylamine component.
Collapse
Affiliation(s)
- Robert J Tombari
- Department of Chemistry, University of California, Davis, Davis, CA 95616, USA.
| | - Jeremy R Tuck
- Department of Chemistry, University of California, Davis, Davis, CA 95616, USA.
| | - Noah Yardeny
- Department of Chemistry, University of California, Davis, Davis, CA 95616, USA.
| | - Phillip W Gingrich
- Department of Chemistry, University of California, Davis, Davis, CA 95616, USA.
| | - Dean J Tantillo
- Department of Chemistry, University of California, Davis, Davis, CA 95616, USA.
| | - David E Olson
- Department of Chemistry, University of California, Davis, Davis, CA 95616, USA.
- Department of Biochemistry & Molecular Medicine, School of Medicine, University of California, Davis, Sacramento, CA 95817, USA
- Center for Neuroscience, University of California, Davis, Davis, CA 95616, USA
| |
Collapse
|
22
|
Saint-Louis CJ, Warner DJ, Keane KS, Kelley MD, Meyers CM, Blackstock SC. Photo-Electroswitchable Arylaminoazobenzenes. J Org Chem 2021; 86:11341-11353. [PMID: 34343429 DOI: 10.1021/acs.joc.1c00763] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Azobenzenes appended with a redox-active arylamino group (redox auxiliary, RA) are prepared and shown to undergo fast, complete, and catalytic Z→E azo isomerization upon electron loss from the RA unit of the azobenzene. The RA-azo structures can be reversibly (E→Z→E)n cycled by sequential photo- and electrostimulation. Due to the robust nature of the RA•+-azo radical cation chain carrying species, initiation of electron transfer (ET) catalysis occurs at low levels (1.0-0.04 mol %) of catalytic loading and is effective even at Z-RA-azo concentrations of 10-4-10-5 M, yielding TONs (turnover numbers) of 100-2300 under such dilute conditions. The RA-azo Z→E conversion is demonstrated using chemical oxidation (redox switching), electrochemical oxidation (electro switching), and photochemical oxidation (photoredox switching). The Z→E acceleration is shown to be at least 2 × 109-fold for RA-azo 5. DFT calculations on methyl yellow suggest that a N-centered radical cation of the RA group stabilizes the Z→E N-N twist transition state of the RA•+-azo, yielding a large reduction in the barrier for RA•+-azo compared to neutral RA-azo. The RA-azo structure class has nanomechanical features that can be toggled with photo- and electrostimulation, the latter offering a quick switch for complete Z→E conversion.
Collapse
Affiliation(s)
- Carl Jacky Saint-Louis
- Department of Chemistry & Biochemistry, Kennesaw State University, Kennesaw, Georgia 30144, United States
| | - David J Warner
- Department of Chemistry & Biochemistry, The University of Alabama, Tuscaloosa, Alabama 35487, United States
| | - Katie S Keane
- Department of Chemistry & Biochemistry, The University of Alabama, Tuscaloosa, Alabama 35487, United States
| | - Melody D Kelley
- Department of Physical Science, Perimeter College at Georgia State University, Atlanta, Georgia 30303, United States
| | - Connor M Meyers
- Department of Chemistry & Biochemistry, The University of Alabama, Tuscaloosa, Alabama 35487, United States
| | - Silas C Blackstock
- Department of Chemistry & Biochemistry, The University of Alabama, Tuscaloosa, Alabama 35487, United States
| |
Collapse
|
23
|
Ryazantsev MN, Strashkov DM, Nikolaev DM, Shtyrov AA, Panov MS. Photopharmacological compounds based on azobenzenes and azoheteroarenes: principles of molecular design, molecular modelling, and synthesis. RUSSIAN CHEMICAL REVIEWS 2021. [DOI: 10.1070/rcr5001] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
24
|
Jung Y, Hong JE, Kwak JH, Park Y. Single-Step Approach toward Nitrones via Pyridinium Ylides: The DMAP-Catalyzed Reaction of Benzyl Halides with Nitrosoarenes. J Org Chem 2021; 86:6343-6350. [PMID: 33890771 DOI: 10.1021/acs.joc.1c00158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A single-step approach is reported for the preparation of nitrones from benzyl halides and nitrosoarenes via pyridinium ylides, utilizing 4-dimethylaminopyridine (DMAP) catalyst and mild reaction conditions (Li2CO3, dimethylacetamide, and room temperature). The reaction provides both keto- and aldonitrones in high yields with a wide scope for benzyl halides and nitrosoarenes. In the same reaction system, 2-methyl-2-nitrosopropane, which does not have an aryl group, also affords the corresponding N-tert-butyl nitrones from primary benzyl bromides that have an electron-withdrawing group. As an application of the reaction, methyl 2-bromo-2-phenylacetate was used to prepare the corresponding isoxazolidine by a sequential one-pot synthesis.
Collapse
Affiliation(s)
- Yeonghun Jung
- College of Pharmacy, Inje Institute of Pharmaceutical Sciences and Research, Inje University, 197 Inje-ro, Gimhae, Gyeongnam 50834, Republic of Korea
| | - Jee Eun Hong
- College of Pharmacy, Inje Institute of Pharmaceutical Sciences and Research, Inje University, 197 Inje-ro, Gimhae, Gyeongnam 50834, Republic of Korea
| | - Jae-Hwan Kwak
- College of Pharmacy, Kyungsung University, 309 Suyeong-ro, Nam-gu, Busan 48434, Republic of Korea
| | - Yohan Park
- College of Pharmacy, Inje Institute of Pharmaceutical Sciences and Research, Inje University, 197 Inje-ro, Gimhae, Gyeongnam 50834, Republic of Korea
| |
Collapse
|
25
|
Li L, Xu F, Sun G, Sun M, Jia S, Li H, Xu T, Zhang H, Wang Y, Guo Y, Liu T. Identification of N-methylaniline based on azo coupling reaction by combining TLC with SERRS. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 252:119490. [PMID: 33524815 DOI: 10.1016/j.saa.2021.119490] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Revised: 01/02/2021] [Accepted: 01/11/2021] [Indexed: 06/12/2023]
Abstract
The objective of this study was to establish a novel method for the determination of N-methylaniline (NMA) based on azo coupling reaction in infant pacifiers prepared with food contact silicone materials by combining thin layer chromatography (TLC) with surface-enhanced resonance Raman scattering (SERRS). TLC was used to separate the azo reaction products to confirm the component spot of azo compound, then the spot of azo compound mixed with silver sol on the TLC plate was qualitatively detected by SERRS. The limit of detection (LOD) of the method is as low as 0.50 ppm for NMA. The influence of sample matrix about the TLC-SERRS detection of NMA was investigated by experiment of simulated positive sample, and the NMA in infant pacifiers exposed to silica gel products was detected. The method of TLC-SERRS for the determination of NMA in infant pacifiers prepared with food contact silicone materials was established, and the real samples were detected. Compared with the methods ever reported, the method has the advantages of high sensitivity, specificity and low cost. It provides a new reference method for establishing a safety system for food contact silicone materials.
Collapse
Affiliation(s)
- Li Li
- School of Pharmacy, Qiqihar Medical University , Qiqihar 161006,China
| | - Feng Xu
- School of Pharmacy, Qiqihar Medical University , Qiqihar 161006,China.
| | - Ge Sun
- School of Pharmacy, Qiqihar Medical University , Qiqihar 161006,China
| | - Mingrui Sun
- School of Pharmacy, Qiqihar Medical University , Qiqihar 161006,China
| | - Shoushi Jia
- Center for Disease Control and Prevention of Qiqihar City, Qiqihar 161006,China
| | - Hongmei Li
- School of Pharmacy, Qiqihar Medical University , Qiqihar 161006,China
| | - Tao Xu
- School of Pharmacy, Qiqihar Medical University , Qiqihar 161006,China
| | - Honglian Zhang
- School of Pharmacy, Qiqihar Medical University , Qiqihar 161006,China
| | - Yan Wang
- School of Pharmacy, Qiqihar Medical University , Qiqihar 161006,China
| | - Yue Guo
- School of Pharmacy, Qiqihar Medical University , Qiqihar 161006,China
| | - Taohua Liu
- School of Pharmacy, Qiqihar Medical University , Qiqihar 161006,China
| |
Collapse
|
26
|
Schmiegel CJ, Berg P, Obst F, Schoch R, Appelhans D, Kuckling D. Continuous Flow Synthesis of Azoxybenzenes by Reductive Dimerization of Nitrosobenzenes with Gel‐Bound Catalysts. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100006] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Carsten J. Schmiegel
- Department of Chemistry, Faculty of Science Paderborn University Warburger Str. 100 33098 Paderborn Germany
| | - Patrik Berg
- Department of Chemistry, Faculty of Science Paderborn University Warburger Str. 100 33098 Paderborn Germany
| | - Franziska Obst
- Leibniz Institute for Polymer Research Dresden Hohe Str. 6 01069 Dresden Germany
| | - Roland Schoch
- Department of Chemistry, Faculty of Science Paderborn University Warburger Str. 100 33098 Paderborn Germany
| | - Dietmar Appelhans
- Leibniz Institute for Polymer Research Dresden Hohe Str. 6 01069 Dresden Germany
| | - Dirk Kuckling
- Department of Chemistry, Faculty of Science Paderborn University Warburger Str. 100 33098 Paderborn Germany
| |
Collapse
|
27
|
Sitter JD, Vannucci AK. Photocatalytic Oxidative Coupling of Arylamines for the Synthesis of Azoaromatics and the Role of O 2 in the Mechanism. J Am Chem Soc 2021; 143:2938-2943. [PMID: 33571412 DOI: 10.1021/jacs.0c13101] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The photocatalytic oxidative coupling of aryl amines to selectively synthesize azoaromatic compounds has been realized. Multiple different photocatalysts can be used to perform the general reaction; however, Ir(dF-CF3-ppy)2(dtbpy)+, where dF-CF3-ppy is 2-(2,4-difluorophenyl)-5-(trifluoromethyl)pyridine and dtpby is 4,4'-tert-butyl-2,2'-bipyridine, showed the greatest range of reactivity with various amine substrates. Both electron-rich and -deficient amines can be coupled with yields up to 95% under an ambient air atmosphere. Oxygen was deemed to be essential for the reaction and is utilized in the regeneration of the photocatalyst. Fluorescence quenching and radical trap experiments indicate an amine radical coupling mechanism that proceeds through a hydrazoaromatic intermediate before further oxidation occurs to form the desired azoaromatic products.
Collapse
Affiliation(s)
- James D Sitter
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States
| | - Aaron K Vannucci
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States
| |
Collapse
|
28
|
Das K, Yan T, Paul S, Qiu S, Ben T, Roy S. Self-Assembly and Cascade Catalysis by a Soft-Oxometalate (SOM) System. Front Chem 2020; 8:601814. [PMID: 33330395 PMCID: PMC7729020 DOI: 10.3389/fchem.2020.601814] [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: 09/01/2020] [Accepted: 10/28/2020] [Indexed: 11/13/2022] Open
Abstract
Cascade catalysis has gained importance due to its various applications. In this work, cascade catalysis was performed using a self-assembled soft-oxometalate (SOM) as a model system. At first, we synthesized an oxometalate (OM) hybrid with a polymerizable organic cation, namely tetrakis(4-aminophenyl)methane, and an OM, K8[SiW11O39]. The hybrid in turn was converted into SOM in water, DMSO mixture, and characterized by different techniques, ranging from electron microscopy to DLS. The SOM state is endowed with the ability to polymerize the aniline based counter ions associated with it in the presence of UV-light. This polymerization is possible due to the presence of photocatalytic OMs (oxometalates) in the SOMs. The polymer-SOM hybrid in cascade oxidizes selectively aniline to nitrobenzene and nitrite to nitrate owing to the residual oxidizing property of the OM constituents in it. This is the first example of cascade catalysis in SOM chemistry.
Collapse
Affiliation(s)
- Kousik Das
- Eco-Friendly Applied Materials Laboratory, Department of Chemical Sciences, Indian Institute of Science Education and Research, Kolkata, India
| | - Tingting Yan
- Department of Chemistry, Jilin University, Changchun, China
| | - Shounik Paul
- Eco-Friendly Applied Materials Laboratory, Department of Chemical Sciences, Indian Institute of Science Education and Research, Kolkata, India
| | - Shilun Qiu
- Department of Chemistry, Jilin University, Changchun, China
| | - Teng Ben
- Department of Chemistry, Jilin University, Changchun, China
| | - Soumyajit Roy
- Eco-Friendly Applied Materials Laboratory, Department of Chemical Sciences, Indian Institute of Science Education and Research, Kolkata, India
| |
Collapse
|
29
|
Gomila AMJ, Rustler K, Maleeva G, Nin-Hill A, Wutz D, Bautista-Barrufet A, Rovira X, Bosch M, Mukhametova E, Petukhova E, Ponomareva D, Mukhamedyarov M, Peiretti F, Alfonso-Prieto M, Rovira C, König B, Bregestovski P, Gorostiza P. Photocontrol of Endogenous Glycine Receptors In Vivo. Cell Chem Biol 2020; 27:1425-1433.e7. [PMID: 32846115 DOI: 10.1016/j.chembiol.2020.08.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Revised: 04/14/2020] [Accepted: 08/04/2020] [Indexed: 12/15/2022]
Abstract
Glycine receptors (GlyRs) are indispensable for maintaining excitatory/inhibitory balance in neuronal circuits that control reflexes and rhythmic motor behaviors. Here we have developed Glyght, a GlyR ligand controlled with light. It is selective over other Cys-loop receptors, is active in vivo, and displays an allosteric mechanism of action. The photomanipulation of glycinergic neurotransmission opens new avenues to understanding inhibitory circuits in intact animals and to developing drug-based phototherapies.
Collapse
Affiliation(s)
- Alexandre M J Gomila
- Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology (BIST), Barcelona 08028, Spain
| | - Karin Rustler
- University of Regensburg, Institute of Organic Chemistry, Regensburg 93053, Germany
| | - Galyna Maleeva
- Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology (BIST), Barcelona 08028, Spain; Aix-Marseille Université, INSERM, INS, Institut de Neurosciences des Systèmes, Marseille 13005, France
| | - Alba Nin-Hill
- University of Barcelona, Department of Inorganic and Organic Chemistry, Institute of Theoretical Chemistry (IQTCUB), Barcelona 08028, Spain
| | - Daniel Wutz
- University of Regensburg, Institute of Organic Chemistry, Regensburg 93053, Germany
| | - Antoni Bautista-Barrufet
- Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology (BIST), Barcelona 08028, Spain
| | - Xavier Rovira
- Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology (BIST), Barcelona 08028, Spain
| | - Miquel Bosch
- Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology (BIST), Barcelona 08028, Spain
| | - Elvira Mukhametova
- Aix-Marseille Université, INSERM, INS, Institut de Neurosciences des Systèmes, Marseille 13005, France; Kazan Federal University, Open Lab of Motor Neurorehabilitation, Kazan, Russia
| | - Elena Petukhova
- Institute of Neurosciences, Kazan State Medical University, Kazan, Russia
| | - Daria Ponomareva
- Institute of Neurosciences, Kazan State Medical University, Kazan, Russia
| | | | - Franck Peiretti
- Aix Marseille Université, INSERM 1263, INRA 1260, C2VN, Marseille, France
| | - Mercedes Alfonso-Prieto
- Institute for Advanced Simulation IAS-5 and Institute of Neuroscience and Medicine INM-9, Computational Biomedicine, Forschungszentrum Jülich, 52425 Jülich, Germany; Cécile and Oskar Vogt Institute for Brain Research, Medical Faculty, Heinrich Heine University Düsseldorf, 40225 Düsseldorf, Germany
| | - Carme Rovira
- University of Barcelona, Department of Inorganic and Organic Chemistry, Institute of Theoretical Chemistry (IQTCUB), Barcelona 08028, Spain; Catalan Institution for Research and Advanced Studies (ICREA), Barcelona 08003 Spain.
| | - Burkhard König
- University of Regensburg, Institute of Organic Chemistry, Regensburg 93053, Germany.
| | - Piotr Bregestovski
- Aix-Marseille Université, INSERM, INS, Institut de Neurosciences des Systèmes, Marseille 13005, France; Institute of Neurosciences, Kazan State Medical University, Kazan, Russia.
| | - Pau Gorostiza
- Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology (BIST), Barcelona 08028, Spain; Catalan Institution for Research and Advanced Studies (ICREA), Barcelona 08003 Spain; CIBER-BBN, Madrid 28001 Spain.
| |
Collapse
|
30
|
Askari MS, Effaty F, Gennarini F, Orio M, Le Poul N, Ottenwaelder X. Tuning Inner-Sphere Electron Transfer in a Series of Copper/Nitrosoarene Adducts. Inorg Chem 2020; 59:8678-8689. [PMID: 32073833 DOI: 10.1021/acs.inorgchem.9b03175] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
A series of copper/nitrosoarene complexes was created that mimics several steps in biomimetic O2 activation by copper(I). The reaction of the copper(I) complex of N,N,N',N'-tetramethypropylenediamine with a series of para-substituted nitrosobenzene derivatives leads to adducts in which the nitrosoarene (ArNO) is reduced by zero, one, or two electrons, akin to the isovalent species dioxygen, superoxide, and peroxide, respectively. The geometric and electronic structures of these adducts were characterized by means of X-ray diffraction, vibrational analysis, ultraviolet-visible spectroscopy, NMR, electrochemistry, and density functional theory (DFT) calculations. The bonding mode of the NO moiety depends on the oxidation state of the ArNO moiety: κN for ArNO, mononuclear η2-NO and dinuclear μ-η2:η1 for ArNO•-, and dinuclear μ-η2:η2 for ArNO2-. 15N isotopic labeling confirms the reduction state by measuring the NO stretching frequency (1392 cm-1 for κN-ArNO, 1226 cm-1 for η2-ArNO•-, 1133 cm-1 for dinuclear μ-η2:η1-ArNO•-, and 875 cm-1 for dinuclear μ-η2:η2 for ArNO2-). The 15N NMR signal disappears for the ArNO•- species, establishing a unique diagnostic for the radical state. Electrochemical studies indicate reduction waves that are consistent with one-electron reduction of the adducts and are compared with studies performed on Cu-O2 analogues. DFT calculations were undertaken to confirm our experimental findings, notably to establish the nature of the charge-transfer transitions responsible for the intense green color of the complexes. In fine, this family of complexes is unique in that it walks through three redox states of the ArNO moiety while keeping the metal and its supporting ligand the same. This work provides snapshots of the reactivity of the toxic nitrosoarene molecules with the biologically relevant Cu(I) ion.
Collapse
Affiliation(s)
- Mohammad S Askari
- Department of Chemistry and Biochemistry, Concordia University, Montreal, Quebec H4B 1R6, Canada
| | - Farshid Effaty
- Department of Chemistry and Biochemistry, Concordia University, Montreal, Quebec H4B 1R6, Canada
| | - Federica Gennarini
- Department of Chemistry and Biochemistry, Concordia University, Montreal, Quebec H4B 1R6, Canada.,Laboratoire de Chimie, Électrochimie Moléculaires et Chimie Analytique, UMR, CNRS 6521, Université de Bretagne Occidentale, Brest 29238, France
| | - Maylis Orio
- Aix Marseille Université, CNRS, Centrale Marseille, iSm2, Marseille 13007, France
| | - Nicolas Le Poul
- Laboratoire de Chimie, Électrochimie Moléculaires et Chimie Analytique, UMR, CNRS 6521, Université de Bretagne Occidentale, Brest 29238, France
| | - Xavier Ottenwaelder
- Department of Chemistry and Biochemistry, Concordia University, Montreal, Quebec H4B 1R6, Canada
| |
Collapse
|
31
|
Wang X, Lin Y, Liu J, He F, Kuang Y, Wu J. Nitrosoarenes as Nitrogen Source for Generation of Sulfonamides with the Insertion of Sulfur Dioxide under
Metal‐Free
Conditions
†. CHINESE J CHEM 2020. [DOI: 10.1002/cjoc.202000053] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Xuefeng Wang
- Department of Chemistry Fudan University 2005 Songhu Road Shanghai 200438 China
- School of Pharmaceutical and Materials Engineering & Institute for Advanced Studies, Taizhou University 1139 Shifu Avenue, Taizhou, Zhejiang 318000, China School of Metallurgical and Chemical Engineering, Jiangxi University of Science and Technology Ganzhou Jiangxi 341000 China
| | - Yanmei Lin
- Department of Chemistry Fudan University 2005 Songhu Road Shanghai 200438 China
| | - Jin‐Biao Liu
- School of Pharmaceutical and Materials Engineering & Institute for Advanced Studies, Taizhou University 1139 Shifu Avenue, Taizhou, Zhejiang 318000, China School of Metallurgical and Chemical Engineering, Jiangxi University of Science and Technology Ganzhou Jiangxi 341000 China
| | - Fu‐Sheng He
- School of Pharmaceutical and Materials Engineering & Institute for Advanced Studies, Taizhou University 1139 Shifu Avenue, Taizhou, Zhejiang 318000, China School of Metallurgical and Chemical Engineering, Jiangxi University of Science and Technology Ganzhou Jiangxi 341000 China
| | - Yunyan Kuang
- Department of Chemistry Fudan University 2005 Songhu Road Shanghai 200438 China
| | - Jie Wu
- School of Pharmaceutical and Materials Engineering & Institute for Advanced Studies, Taizhou University 1139 Shifu Avenue, Taizhou, Zhejiang 318000, China School of Metallurgical and Chemical Engineering, Jiangxi University of Science and Technology Ganzhou Jiangxi 341000 China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
| |
Collapse
|
32
|
Santos Hurtado C, Bastien G, Mašát M, Štoček JR, Dračínský M, Rončević I, Císařová I, Rogers CT, Kaleta J. Regular Two-Dimensional Arrays of Surface-Mounted Molecular Switches: Switching Monitored by UV–vis and NMR Spectroscopy. J Am Chem Soc 2020; 142:9337-9351. [DOI: 10.1021/jacs.0c01753] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Carina Santos Hurtado
- Institute of Organic Chemistry and Biochemistry of the CAS, Flemingovo nám. 2, 166 10 Prague 6, Czech Republic
| | - Guillaume Bastien
- Institute of Organic Chemistry and Biochemistry of the CAS, Flemingovo nám. 2, 166 10 Prague 6, Czech Republic
| | - Milan Mašát
- Institute of Organic Chemistry and Biochemistry of the CAS, Flemingovo nám. 2, 166 10 Prague 6, Czech Republic
| | - Jakub Radek Štoček
- Institute of Organic Chemistry and Biochemistry of the CAS, Flemingovo nám. 2, 166 10 Prague 6, Czech Republic
| | - Martin Dračínský
- Institute of Organic Chemistry and Biochemistry of the CAS, Flemingovo nám. 2, 166 10 Prague 6, Czech Republic
| | - Igor Rončević
- Institute of Organic Chemistry and Biochemistry of the CAS, Flemingovo nám. 2, 166 10 Prague 6, Czech Republic
| | - Ivana Císařová
- Department of Inorganic Chemistry, Faculty of Science, Charles University in Prague, Hlavova 2030, 128 40 Prague 2, Czech Republic
| | - Charles T. Rogers
- Department of Physics, University of Colorado, Boulder, Colorado 80309, United States
| | - Jiří Kaleta
- Institute of Organic Chemistry and Biochemistry of the CAS, Flemingovo nám. 2, 166 10 Prague 6, Czech Republic
| |
Collapse
|
33
|
Romero AH, Cerecetto H. A Common, Facile and Eco-Friendly Method for the Reduction of Nitroarenes, Selective Reduction of Poly-Nitroarenes and Deoxygenation of N
-Oxide Containing Heteroarenes Using Elemental Sulfur. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000064] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Angel H. Romero
- Laboratorio de Química Orgánica Medicinal; Instituto de Química Biológica; Facultad de Ciencias; Universidad de la Republica; Igual 4225 11400 Montevideo Uruguay
| | - Hugo Cerecetto
- Laboratorio de Química Orgánica Medicinal; Instituto de Química Biológica; Facultad de Ciencias; Universidad de la Republica; Igual 4225 11400 Montevideo Uruguay
| |
Collapse
|
34
|
Rustler K, Nitschke P, Zahnbrecher S, Zach J, Crespi S, König B. Photochromic Evaluation of 3(5)-Arylazo-1H-pyrazoles. J Org Chem 2020; 85:4079-4088. [DOI: 10.1021/acs.joc.9b03097] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Karin Rustler
- Institut für Organische Chemie, Universität Regensburg, Universitätsstraße 31, 93053 Regensburg, Germany
| | - Philipp Nitschke
- Institut für Organische Chemie, Universität Regensburg, Universitätsstraße 31, 93053 Regensburg, Germany
| | - Sophie Zahnbrecher
- Institut für Organische Chemie, Universität Regensburg, Universitätsstraße 31, 93053 Regensburg, Germany
| | - Julia Zach
- Institut für Organische Chemie, Universität Regensburg, Universitätsstraße 31, 93053 Regensburg, Germany
| | - Stefano Crespi
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Burkhard König
- Institut für Organische Chemie, Universität Regensburg, Universitätsstraße 31, 93053 Regensburg, Germany
| |
Collapse
|
35
|
Jiang J, Li J. Mechanically Induced
N
‐arylation of Amines with Diaryliodonium Salts. ChemistrySelect 2020. [DOI: 10.1002/slct.201904188] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jun Jiang
- National Engineering Research Center for Process Development of Active Pharmaceutical Ingredients, College of Pharmaceutical Sciences Zhejiang University of Technology Hangzhou 310014 P. R. China
| | - Jianjun Li
- National Engineering Research Center for Process Development of Active Pharmaceutical Ingredients, College of Pharmaceutical Sciences Zhejiang University of Technology Hangzhou 310014 P. R. China
| |
Collapse
|
36
|
Heindl AH, Wegner HA. Starazo triple switches - synthesis of unsymmetrical 1,3,5-tris(arylazo)benzenes. Beilstein J Org Chem 2020; 16:22-31. [PMID: 31976013 PMCID: PMC6964668 DOI: 10.3762/bjoc.16.4] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Accepted: 12/09/2019] [Indexed: 12/18/2022] Open
Abstract
Multistate switches allow to drastically increase the information storage capacity and complexity of smart materials. In this context, unsymmetrical 1,3,5-tris(arylazo)benzenes - 'starazos' - which merge three photoswitches on one benzene ring, were successfully prepared. Two different synthetic strategies, one based on Baeyer-Mills reactions and the other based on Pd-catalyzed coupling reactions of arylhydrazides and aryl halides, followed by oxidation, were investigated. The Pd-catalyzed route efficiently led to the target compounds, unsymmetrical tris(arylazo)benzenes. These triple switches were preliminarily characterized in terms of their isomerization behavior using UV-vis and 1H NMR spectroscopy. The efficient synthesis of this new class of unsymmetrical tris(arylazo)benzenes opened new avenues to novel multistate switching materials.
Collapse
Affiliation(s)
- Andreas H Heindl
- Institute of Organic Chemistry, Justus Liebig University, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
- Center for Material Research (LaMa), Justus Liebig University, Heinrich-Buff-Ring 16, 35392 Giessen, Germany
| | - Hermann A Wegner
- Institute of Organic Chemistry, Justus Liebig University, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
- Center for Material Research (LaMa), Justus Liebig University, Heinrich-Buff-Ring 16, 35392 Giessen, Germany
| |
Collapse
|
37
|
Advani JH, Ravi K, Naikwadi DR, Bajaj HC, Gawande MB, Biradar AV. Bio-waste chitosan-derived N-doped CNT-supported Ni nanoparticles for selective hydrogenation of nitroarenes. Dalton Trans 2020; 49:10431-10440. [DOI: 10.1039/d0dt01708f] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
In this study, a facile method for the synthesis of leach proof and earth-abundant non-noble Ni nanoparticles on N-doped carbon nanotubes is reported.
Collapse
Affiliation(s)
- Jacky H. Advani
- Inorganic Materials and Catalysis Division
- CSIR-Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI)
- Bhavnagar-364002
- India
- Academy of Scientific and Innovative Research (AcSIR)
| | - Krishnan Ravi
- Inorganic Materials and Catalysis Division
- CSIR-Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI)
- Bhavnagar-364002
- India
- Academy of Scientific and Innovative Research (AcSIR)
| | - Dhanaji R. Naikwadi
- Inorganic Materials and Catalysis Division
- CSIR-Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI)
- Bhavnagar-364002
- India
- Academy of Scientific and Innovative Research (AcSIR)
| | - Hari C. Bajaj
- Inorganic Materials and Catalysis Division
- CSIR-Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI)
- Bhavnagar-364002
- India
- Academy of Scientific and Innovative Research (AcSIR)
| | - Manoj B. Gawande
- Institute of Chemical Technology
- Mumbai Marathwada Campus
- Jalna 431213
- India
| | - Ankush V. Biradar
- Inorganic Materials and Catalysis Division
- CSIR-Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI)
- Bhavnagar-364002
- India
- Academy of Scientific and Innovative Research (AcSIR)
| |
Collapse
|
38
|
Unprecedented Formation of 2‐Chloro‐5‐(2‐chlorobenzyl)‐4,5,6,7‐tetrahydrothieno[3,2‐c]pyridine 5‐oxide via Oxidation‐Chlorination Reaction Using Oxone: A Combination of Synthesis and 1D‐2D NMR Studies. ChemistrySelect 2019. [DOI: 10.1002/slct.201903556] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
39
|
Ford RL, Alt I, Jana N, Driver TG. Intramolecular Pd-Catalyzed Reductive Amination of Enolizable sp 3-C-H Bonds. Org Lett 2019; 21:8827-8831. [PMID: 31613113 DOI: 10.1021/acs.orglett.9b03458] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A palladium-catalyzed reductive cyclization of nitroarenes has been designed to construct sp3-C-NHAr bonds from sp3-C-H bonds by using an enolizable nucleophile to intercept a nitrosoarene intermediate. Exposure of ortho-substituted nitroarenes to 5 mol % of Pd(OAc)2 and 10 mol % of phenanthroline under 2 atm of CO constructs partially saturated 5-, 6-, or 7-membered N-heterocycles using α-pyridyl carboxylates, malonates, 1,3-dimethylbarbituric acid, 1,3-diones, or difurans as the nucleophile.
Collapse
Affiliation(s)
- Russell L Ford
- Department of Chemistry , University at Illinois at Chicago , 845 West Taylor Street , Chicago , Illinois 60607 , United States
| | - Isabel Alt
- Department of Chemistry , University at Illinois at Chicago , 845 West Taylor Street , Chicago , Illinois 60607 , United States.,Institut für Organische Chemie , Universität Stuttgart , Pfaffenwaldring 55 , DE-70569 Stuttgart , Germany
| | - Navendu Jana
- Department of Chemistry , University at Illinois at Chicago , 845 West Taylor Street , Chicago , Illinois 60607 , United States
| | - Tom G Driver
- Department of Chemistry , University at Illinois at Chicago , 845 West Taylor Street , Chicago , Illinois 60607 , United States
| |
Collapse
|
40
|
Chen W, Wang Y, Mi X, Luo S. Enantioselective Oxidative Coupling of β-Ketocarbonyls and Anilines by Joint Chiral Primary Amine and Selenium Catalysis. Org Lett 2019; 21:8178-8182. [PMID: 31566981 DOI: 10.1021/acs.orglett.9b02636] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An enantioselective primary amine-catalyzed total N-selective nitroso aldol reaction (N-NA) was achieved through the oxidation of primary aromatic amines to the corresponding nitrosoarenes catalyzed by selenium reagents and 30% H2O2. This protocol provides a facile and highly efficient access to α-hydroxyamino carbonyls bearing chiral quaternary centers under exceedingly mild and green reaction conditions with high chemo- and enantiocontrol.
Collapse
Affiliation(s)
- Wanting Chen
- College of Chemistry , Beijing Normal University , Xinjiekouwai Street 19 , Beijing 100875 , China
| | - Yanni Wang
- College of Chemistry , Beijing Normal University , Xinjiekouwai Street 19 , Beijing 100875 , China
| | - Xueling Mi
- College of Chemistry , Beijing Normal University , Xinjiekouwai Street 19 , Beijing 100875 , China
| | - Sanzhong Luo
- Center of Basic Molecular Science (CBMS), Department of Chemistry , Tsinghua University , Beijing 100084 , China
| |
Collapse
|
41
|
Structural Design and Application of Azo-based Supramolecular Polymer Systems. CHINESE JOURNAL OF POLYMER SCIENCE 2019. [DOI: 10.1007/s10118-019-2331-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
|
42
|
Roscales S, Csákÿ AG. Synthesis of Mono- N-Methyl Aromatic Amines from Nitroso Compounds and Methylboronic Acid. ACS OMEGA 2019; 4:13943-13953. [PMID: 31497712 PMCID: PMC6713987 DOI: 10.1021/acsomega.9b01608] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Accepted: 06/12/2019] [Indexed: 05/08/2023]
Abstract
The selective synthesis of mono-N-methyl aromatic amines was achieved by the reaction of aromatic nitroso compounds with methylboronic acid promoted by triethylphosphite under transition metal-free conditions. The target compounds are constructed efficiently without overmethylation, under environmentally benign reaction conditions that do not require bases or reductants and therefore are of interest in pharmaceutical, agricultural, and chemical industries.
Collapse
|
43
|
Heindl AH, Becker J, Wegner HA. Selective switching of multiple azobenzenes. Chem Sci 2019; 10:7418-7425. [PMID: 31489164 PMCID: PMC6713861 DOI: 10.1039/c9sc02347j] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Accepted: 06/21/2019] [Indexed: 12/13/2022] Open
Abstract
Multi-state photoswitchable compounds are highly attractive for application in data storage or multi-responsive materials. Herein, a trisazobenzene macrocycle is presented, which can be switched selectively into three individual states.
Multi-state photoswitchable compounds are highly attractive for application in data storage or multi-responsive materials. In this work, a trisazobenzene macrocycle capable of three-state isomerization is presented. The compound can be switched into each of the states with more than 70% of the isomer solely by light and heat as stimuli representing the first example for an oligo-azobenzene containing identical photochromic units which can be selectively adressed. Detailed spectroscopic, crystallographic, HPLC as well as computational investigations and the comparison to a less and a higher strained derivative revealed macrocyclic ring strain to be responsible for the compounds unique isomerization behavior.
Collapse
Affiliation(s)
- Andreas H Heindl
- Institute of Organic Chemistry , Justus Liebig University , Heinrich-Buff-Ring 17 , 35392 Giessen , Germany . .,Center for Materials Research (LaMa) , Justus-Liebig-University , Heinrich-Buff-Ring 16 , 35392 Giessen , Germany
| | - Jonathan Becker
- Institute of Inorganic and Analytical Chemistry , Justus Liebig University , Heinrich-Buff-Ring 17 , 35392 Giessen , Germany
| | - Hermann A Wegner
- Institute of Organic Chemistry , Justus Liebig University , Heinrich-Buff-Ring 17 , 35392 Giessen , Germany . .,Center for Materials Research (LaMa) , Justus-Liebig-University , Heinrich-Buff-Ring 16 , 35392 Giessen , Germany
| |
Collapse
|
44
|
Tungstate-supported silica-coated magnetite nanoparticles: a novel magnetically recoverable nanocatalyst for green synthesis of nitroso arenes. CHEMICAL PAPERS 2019. [DOI: 10.1007/s11696-019-00708-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
|
45
|
Maleeva G, Wutz D, Rustler K, Nin-Hill A, Rovira C, Petukhova E, Bautista-Barrufet A, Gomila-Juaneda A, Scholze P, Peiretti F, Alfonso-Prieto M, König B, Gorostiza P, Bregestovski P. A photoswitchable GABA receptor channel blocker. Br J Pharmacol 2019; 176:2661-2677. [PMID: 30981211 PMCID: PMC6609548 DOI: 10.1111/bph.14689] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2018] [Revised: 03/03/2019] [Accepted: 04/03/2019] [Indexed: 12/26/2022] Open
Abstract
BACKGROUND AND PURPOSE Anion-selective Cys-loop receptors (GABA and glycine receptors) provide the main inhibitory drive in the CNS. Both types of receptor operate via chloride-selective ion channels, though with different kinetics, pharmacological profiles, and localization. Disequilibrium in their function leads to a variety of disorders, which are often treated with allosteric modulators. The few available GABA and glycine receptor channel blockers effectively suppress inhibitory currents in neurons, but their systemic administration is highly toxic. With the aim of developing an efficient light-controllable modulator of GABA receptors, we constructed azobenzene-nitrazepam (Azo-NZ1), which is composed of a nitrazepam moiety merged to an azobenzene photoisomerizable group. EXPERIMENTAL APPROACH The experiments were carried out on cultured cells expressing Cys-loop receptors of known subunit composition and in brain slices using patch-clamp. Site-directed mutagenesis and molecular modelling approaches were applied to evaluate the mechanism of action of Azo-NZ1. KEY RESULTS At visible light, being in trans-configuration, Azo-NZ1 blocked heteromeric α1/β2/γ2 GABAA receptors, ρ2 GABAA (GABAC ), and α2 glycine receptors, whereas switching the compound into cis-state by UV illumination restored the activity. Azo-NZ1 successfully photomodulated GABAergic currents recorded from dentate gyrus neurons. We demonstrated that in trans-configuration, Azo-NZ1 blocks the Cl-selective ion pore of GABA receptors interacting mainly with the 2' level of the TM2 region. CONCLUSIONS AND IMPLICATIONS Azo-NZ1 is a soluble light-driven Cl-channel blocker, which allows photo-modulation of the activity induced by anion-selective Cys-loop receptors. Azo-NZ1 is able to control GABAergic postsynaptic currents and provides new opportunities to study inhibitory neurotransmission using patterned illumination.
Collapse
Affiliation(s)
- Galyna Maleeva
- INSERM, INS, Institut de Neurosciences des Systèmes, Aix-Marseille University, Marseille, France
| | - Daniel Wutz
- Institute of Organic Chemistry, University of Regensburg, Regensburg, Germany
| | - Karin Rustler
- Institute of Organic Chemistry, University of Regensburg, Regensburg, Germany
| | - Alba Nin-Hill
- Departament de Química Inorgànica i Orgànica (Secció de Química Orgànica) and Institut de Química Teòrica i Computacional (IQTCUB), Universitat de Barcelona, Barcelona, Spain
| | - Carme Rovira
- Departament de Química Inorgànica i Orgànica (Secció de Química Orgànica) and Institut de Química Teòrica i Computacional (IQTCUB), Universitat de Barcelona, Barcelona, Spain.,Institució Catalana de Recerca i Estudis Avançats (ICREA), Barcelona, Spain
| | - Elena Petukhova
- Department of Normal Physiology, Kazan State Medical University, Kazan, Russia
| | - Antoni Bautista-Barrufet
- Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology (BIST), Barcelona, Spain
| | - Alexandre Gomila-Juaneda
- Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology (BIST), Barcelona, Spain
| | - Petra Scholze
- Department of Pathobiology of the Nervous System, Center for Brain Research, Medical University Vienna, Vienna, Austria
| | - Franck Peiretti
- INSERM 1263, INRA 1260, C2VN, Aix-Marseille Université, Marseille, France
| | - Mercedes Alfonso-Prieto
- Department of Computational Biomedicine, Institute for Advanced Simulations IAS-5 and Institute of Neuroscience and Medicine INM-9, Forschungszentrum Jülich GmbH, Jülich, Germany.,Cécile and Oskar Vogt Institute for Brain Research, Medical Faculty, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
| | - Burkhard König
- Institute of Organic Chemistry, University of Regensburg, Regensburg, Germany
| | - Pau Gorostiza
- Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology (BIST), Barcelona, Spain.,Institució Catalana de Recerca i Estudis Avançats (ICREA), Barcelona, Spain.,Network Biomedical Research Center in Biomaterials, Bioengineering and Nanomedicine (CIBER-BBN), Spain
| | - Piotr Bregestovski
- INSERM, INS, Institut de Neurosciences des Systèmes, Aix-Marseille University, Marseille, France.,Department of Normal Physiology, Kazan State Medical University, Kazan, Russia.,Institute of Neurosciences, Kazan State Medical University, Kazan, Russia
| |
Collapse
|
46
|
Murawska GM, Poloni C, Simeth NA, Szymanski W, Feringa BL. Comparative Study of Photoswitchable Zinc-Finger Domain and AT-Hook Motif for Light-Controlled Peptide-DNA Binding. Chemistry 2019; 25:4965-4973. [PMID: 30735272 DOI: 10.1002/chem.201900090] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Indexed: 12/20/2022]
Abstract
DNA-peptide interactions are involved in key life processes, including DNA recognition, replication, transcription, repair, organization, and modification. Development of tools that can influence DNA-peptide binding non-invasively with high spatiotemporal precision could aid in determining its role in cells and tissues. Here, the design, synthesis, and study of photocontrolled tools for sequence-specific small peptide-DNA major and minor groove interactions are reported, shedding light on DNA binding by transcriptionally active peptides. In particular, photoswitchable moieties were implemented in the peptide backbone or turn region. In each case, DNA binding was affected by photochemical isomerization, as determined in fluorescent displacement assays on model DNA strands, which provides promising tools for DNA modulation.
Collapse
Affiliation(s)
- Gosia M Murawska
- Centre for Systems Chemistry, Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747, AG, Groningen, The Netherlands
| | - Claudia Poloni
- Centre for Systems Chemistry, Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747, AG, Groningen, The Netherlands
| | - Nadja A Simeth
- Centre for Systems Chemistry, Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747, AG, Groningen, The Netherlands
| | - Wiktor Szymanski
- Centre for Systems Chemistry, Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747, AG, Groningen, The Netherlands.,Department of Radiology, University of Groningen, University Medical Centre Groningen, Hanzeplein 1, 9713 GZ, Groningen, The Netherlands
| | - Ben L Feringa
- Centre for Systems Chemistry, Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747, AG, Groningen, The Netherlands
| |
Collapse
|
47
|
Rustler K, Pockes S, König B. Light-Switchable Antagonists for the Histamine H 1 Receptor at the Isolated Guinea Pig Ileum. ChemMedChem 2019; 14:636-644. [PMID: 30628180 DOI: 10.1002/cmdc.201800815] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2018] [Indexed: 12/13/2022]
Abstract
The histamine H1 G protein-coupled receptor (GPCR) plays an important role in allergy and inflammation. Existing drugs that address the H1 receptor differ in their chemical structure, pharmacology, and side effects. Light-controllable spatial and temporal activity regulation of photochromic H1 ligands may contribute to a better mechanistic understanding and the development of improved correlations between ligand structure and pharmacologic effects. We report photochromic H1 receptor ligands, which were investigated in an organ-pharmacological assay. Initially, five photochromic azobenzene derivatives of reported dual H1 -H4 receptor antagonists were designed, synthesized, photochemically characterized, and organ-pharmacologically tested on the isolated guinea pig ileum. Among them, one compound [trans-19: (Z)-1-(4-chlorophenyl)-1-(4-methylpiperazin-1-yl)-N-(4-((E)-phenyldiazenyl)phenyl)methanimine] retained the antagonistic activity of its non-photochromic lead, and trans-cis isomerization by irradiation induced a fourfold difference in the pharmacological response. Further structural optimization resulted in two bathochromically shifted derivatives of 19 [NO2 -substituted 35 {(Z)-1-(4-chlorophenyl)-1-(4-methylpiperazin-1-yl)-N-(4-((E)-(4-nitrophenyl)diazenyl)phenyl)methanimine} and SO3 - -substituted 41 {4-((E)-(4-(((Z)-(4-chlorophenyl)(4-methylpiperazin-1-yl)methylene)amino)phenyl)diazenyl)benzenesulfonate}], which do not require the use of UV light for photoisomerization and which also have improved solubility and show reduced tissue impairment. The trans isomers of both compounds showed a remarkable increase in antagonistic activity relative to their lead trans-19; furthermore, a 46-fold difference in activity on the isolated guinea pig ileum was observed between trans- and cis-35.
Collapse
Affiliation(s)
- Karin Rustler
- Institute of Organic Chemistry, Faculty of Chemistry and Pharmacy, University of Regensburg, Universitätsstraße 31, 93053, Regensburg, Germany
| | - Steffen Pockes
- Institute of Pharmacy, Faculty of Chemistry and Pharmacy, University of Regensburg, Universitätsstraße 31, 93053, Regensburg, Germany
| | - Burkhard König
- Institute of Organic Chemistry, Faculty of Chemistry and Pharmacy, University of Regensburg, Universitätsstraße 31, 93053, Regensburg, Germany
| |
Collapse
|
48
|
Kol M, Williams B, Toombs-Ruane H, Franquelim HG, Korneev S, Schroeer C, Schwille P, Trauner D, Holthuis JC, Frank JA. Optical manipulation of sphingolipid biosynthesis using photoswitchable ceramides. eLife 2019; 8:43230. [PMID: 30720434 PMCID: PMC6386522 DOI: 10.7554/elife.43230] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Accepted: 02/02/2019] [Indexed: 12/31/2022] Open
Abstract
Ceramides are central intermediates of sphingolipid metabolism that also function as potent messengers in stress signaling and apoptosis. Progress in understanding how ceramides execute their biological roles is hampered by a lack of methods to manipulate their cellular levels and metabolic fate with appropriate spatiotemporal precision. Here, we report on clickable, azobenzene-containing ceramides, caCers, as photoswitchable metabolic substrates to exert optical control over sphingolipid production in cells. Combining atomic force microscopy on model bilayers with metabolic tracing studies in cells, we demonstrate that light-induced alterations in the lateral packing of caCers lead to marked differences in their metabolic conversion by sphingomyelin synthase and glucosylceramide synthase. These changes in metabolic rates are instant and reversible over several cycles of photoswitching. Our findings disclose new opportunities to probe the causal roles of ceramides and their metabolic derivatives in a wide array of sphingolipid-dependent cellular processes with the spatiotemporal precision of light.
Collapse
Affiliation(s)
- Matthijs Kol
- Department of Biology/Chemistry, University of Osnabrück, Osnabrück, Germany
| | - Ben Williams
- Department of Chemistry, Ludwig Maximilians University Munich, Munich, Germany
| | - Henry Toombs-Ruane
- Department of Chemistry, Ludwig Maximilians University Munich, Munich, Germany
| | - Henri G Franquelim
- Department of Cellular and Molecular Biophysics, Max Planck Institute of Biochemistry, Martinsried, Germany
| | - Sergei Korneev
- Department of Biology/Chemistry, University of Osnabrück, Osnabrück, Germany
| | - Christian Schroeer
- Department of Biology/Chemistry, University of Osnabrück, Osnabrück, Germany
| | - Petra Schwille
- Department of Cellular and Molecular Biophysics, Max Planck Institute of Biochemistry, Martinsried, Germany
| | - Dirk Trauner
- Department of Chemistry, New York University, New York, United States
| | - Joost Cm Holthuis
- Department of Biology/Chemistry, University of Osnabrück, Osnabrück, Germany
| | - James A Frank
- The Vollum Institute, Oregon Health and Science University, Portland, United States
| |
Collapse
|
49
|
Ding W, Xu S, Yu X, Wang S. Synthesis of Unsymmetrical Aromatic Azoxy Compounds by Silver‐Mediated Oxidative Coupling of Aromatic Amines with Nitrosoarenes. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201801175] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Weijie Ding
- College of Chemistry and Materials EngineeringWenzhou University, Wenzhou Zhejiang 325035 People's Republic of China
| | - Shengshi Xu
- College of Chemistry and Materials EngineeringWenzhou University, Wenzhou Zhejiang 325035 People's Republic of China
| | - Xiaochun Yu
- College of Chemistry and Materials EngineeringWenzhou University, Wenzhou Zhejiang 325035 People's Republic of China
| | - Shun Wang
- College of Chemistry and Materials EngineeringWenzhou University, Wenzhou Zhejiang 325035 People's Republic of China
| |
Collapse
|
50
|
Dey S, Panda S, Ghosh P, Lahiri GK. Electronically Triggered Switchable Binding Modes of the C-Organonitroso (ArNO) Moiety on the {Ru(acac)2} Platform. Inorg Chem 2019; 58:1627-1637. [DOI: 10.1021/acs.inorgchem.8b03191] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sanchaita Dey
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Sanjib Panda
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Prabir Ghosh
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Goutam Kumar Lahiri
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| |
Collapse
|