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  1. Article ; Online: One-pot synthesis of dimerized arenes and heteroarenes under mild conditions using Co(I) as an active catalyst.

    Pal, Adwitiya / Thakur, Arunabha

    Organic & biomolecular chemistry

    2022  Volume 20, Issue 45, Page(s) 8977–8987

    Abstract: A feasible one-pot synthesis of dimerized arene and heteroarene systems was achieved by employing 2 mol% of Co(II)catalyst 1 along with Zn dust at room temperature in 2-4 h. The Co(II)/Zn(0) ... ...

    Abstract A feasible one-pot synthesis of dimerized arene and heteroarene systems was achieved by employing 2 mol% of Co(II)catalyst 1 along with Zn dust at room temperature in 2-4 h. The Co(II)/Zn(0) system
    Language English
    Publishing date 2022-11-23
    Publishing country England
    Document type Journal Article
    ZDB-ID 2097583-1
    ISSN 1477-0539 ; 1477-0520
    ISSN (online) 1477-0539
    ISSN 1477-0520
    DOI 10.1039/d2ob01738e
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Recent Advances on Diarylethene-Based Photoswitching Materials: Applications in Bioimaging, Controlled Singlet Oxygen Generation for Photodynamic Therapy and Catalysis.

    Bag, Sayan Kumar / Pal, Adwitiya / Jana, Subhendu / Thakur, Arunabha

    Chemistry, an Asian journal

    2024  , Page(s) e202400238

    Abstract: Photoswitching materials have emerged as a promising class of compounds that possess manifold interesting properties rendering their widespread use from photoswitches, regulators to optoelectronic devices, security technologies and biochemical assays. ... ...

    Abstract Photoswitching materials have emerged as a promising class of compounds that possess manifold interesting properties rendering their widespread use from photoswitches, regulators to optoelectronic devices, security technologies and biochemical assays. Diarylethenes (DAE) constitute one such category of photoswitchable compounds, where the key features of stability, photoisomerization wavelengths, quantum yield and variability in the photoisomers significantly depend on their derivatization. The last decade has witnessed a surge in the engagement of DAEs in different areas of chemical and biological sciences, like biomarkers, controlled generation of singlet oxygen, photo-dynamic therapy, chemosensing, catalysis, etc. In all the cases, the photoswitchability of DAE is the principal regulating factor along with its emission properties according to the appended groups. Previous reviews on applications of DAE-based systems did not predominantly cover all the aspects of biological and industrial implementations. They have covered only one field of application either in the biological science or in the synthetic aspect or photochromic aspects only. This review is a coalition of all those aspects in last six years. Here the variation of properties of the DAE systems with respect to structural diversifications have been discussed in detail along with their potential applications in bioimaging of cells, regulating singlet oxygen generation for photodynamic therapy and catalysis of organic reactions, and their future prospects. A tabular presentation of the photophysical properties of DAE derivatives adds to the basic understanding of this subject at a glance. We hope that this cumulative collection of contemporary research on DAE, as presented in this review, will enhance the knowledge of the readers about synthetic design anticipating their properties well in advance, and will certainly motivate researchers to generate new DAE architectures with superior chemical and biological properties in future.
    Language English
    Publishing date 2024-04-05
    Publishing country Germany
    Document type Journal Article ; Review
    ZDB-ID 2233006-9
    ISSN 1861-471X ; 1861-4728
    ISSN (online) 1861-471X
    ISSN 1861-4728
    DOI 10.1002/asia.202400238
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  3. Article ; Online: Cobalt(II)-Catalyzed Synthesis of γ-Diketones from Aryl Alkenes and Its Utilization in the Synthesis of Various Heterocyclic Compounds.

    Sau, Subham / Das, Krishna Mohan / Mondal, Bijan / Thakur, Arunabha

    The Journal of organic chemistry

    2024  Volume 89, Issue 10, Page(s) 7095–7108

    Abstract: An earth-abundant Co(II) salt-catalyzed mild and affordable synthetic route has been developed for the synthesis of industrially relevant 1,4-dicarbonyl compounds (or γ-diketones) ...

    Abstract An earth-abundant Co(II) salt-catalyzed mild and affordable synthetic route has been developed for the synthesis of industrially relevant 1,4-dicarbonyl compounds (or γ-diketones)
    Language English
    Publishing date 2024-05-03
    Publishing country United States
    Document type Journal Article
    ZDB-ID 123490-0
    ISSN 1520-6904 ; 0022-3263
    ISSN (online) 1520-6904
    ISSN 0022-3263
    DOI 10.1021/acs.joc.4c00487
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    In stock of ZB MED Cologne/Königswinter

    Zs.A 4473: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (2.OG)
    ab Jg. 2022: Lesesaal (EG)

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  4. Article ; Online: Microwave-Assisted Synthesis of

    Pal, Adwitiya / Das, Krishna Mohan / Thakur, Arunabha

    The Journal of organic chemistry

    2023  Volume 88, Issue 13, Page(s) 8955–8968

    Abstract: The acceptorless dehydrogenative coupling (ADC) between alcohols and amines to produce imines has been achieved mostly by employing precious-metal-based complexes or complexes of earth-abundant metal ions with sensitive and complicated ligand systems as ... ...

    Abstract The acceptorless dehydrogenative coupling (ADC) between alcohols and amines to produce imines has been achieved mostly by employing precious-metal-based complexes or complexes of earth-abundant metal ions with sensitive and complicated ligand systems as catalysts mostly under harsh reaction conditions. Methodologies using readily available earth-abundant metal salts as catalysts without the requirement of ligand, oxidant, or any external additives are not explored. We report an unprecedented microwave-assisted CoCl
    MeSH term(s) Benzyl Alcohol ; Ligands ; Microwaves ; Aniline Compounds ; Amines ; Coordination Complexes ; Oxidants
    Chemical Substances Benzyl Alcohol (LKG8494WBH) ; cobaltous chloride (EVS87XF13W) ; Ligands ; aniline (SIR7XX2F1K) ; Aniline Compounds ; Amines ; Coordination Complexes ; Oxidants
    Language English
    Publishing date 2023-06-09
    Publishing country United States
    Document type Journal Article
    ZDB-ID 123490-0
    ISSN 1520-6904 ; 0022-3263
    ISSN (online) 1520-6904
    ISSN 0022-3263
    DOI 10.1021/acs.joc.3c00682
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.A 4473: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (2.OG)
    ab Jg. 2022: Lesesaal (EG)

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  5. Article ; Online: Co(II) Acetate-Assisted Direct Synthesis of Acyl Hydrazones from Acyl Hydrazides under Mild Conditions.

    Pal, Adwitiya / Das, Krishna Mohan / Sau, Subham / Thakur, Arunabha

    Chemistry, an Asian journal

    2023  Volume 18, Issue 22, Page(s) e202300755

    Abstract: Acyl hydrazones are a class of synthetically important organic compounds that are recurrently in high demand for synthesis and use in various fields of chemistry and biology. We report the first Co(II) catalyzed one-component one-pot sustainable ... ...

    Abstract Acyl hydrazones are a class of synthetically important organic compounds that are recurrently in high demand for synthesis and use in various fields of chemistry and biology. We report the first Co(II) catalyzed one-component one-pot sustainable synthesis of acyl hydrazones only from acyl hydrazides under mild reaction conditions. Traditional and contemporary methodologies use two components (usually acyl hydrazides and aldehydes/ketones/alcohols/styrene) as the coupling partners. Our protocol, on the other hand, involves the in situ generation of aldehyde intermediate (detected by gas chromatography) from the acyl hydrazide, which then undergoes condensation with another molecule of the same acyl hydrazide in the same pot to yield acyl hydrazones in presence of mild base K
    Language English
    Publishing date 2023-10-24
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 2233006-9
    ISSN 1861-471X ; 1861-4728
    ISSN (online) 1861-471X
    ISSN 1861-4728
    DOI 10.1002/asia.202300755
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Non-Conjugated Bis-(Dithienylethene)-Naphthalenediimide as a Dynamic Anti-Counterfeiting Agent: Driving the Wheel of Photoswitching Enactment.

    Kumar Bag, Sayan / Karmakar, Manisha / Mondal, Bijan / Thakur, Arunabha

    Chemistry (Weinheim an der Bergstrasse, Germany)

    2023  Volume 29, Issue 46, Page(s) e202301314

    Abstract: Photochromic fluorescent molecules dramatically extend their fields of applications ranging from optical memories, bioimaging, photoswitches, photonic devices, anti-counterfeiting technology and many more. Here, we have logically designed and synthesized ...

    Abstract Photochromic fluorescent molecules dramatically extend their fields of applications ranging from optical memories, bioimaging, photoswitches, photonic devices, anti-counterfeiting technology and many more. Here, we have logically designed and synthesized a triazole appended bis-(dithienylethene)-naphthalenediimide based photo-responsive material, 5, which demonstrated fluorescence enhancement property upon photocyclization (Φ
    Language English
    Publishing date 2023-07-18
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 1478547-X
    ISSN 1521-3765 ; 0947-6539
    ISSN (online) 1521-3765
    ISSN 0947-6539
    DOI 10.1002/chem.202301314
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  7. Article ; Online: Preparation of 5-(Acyloxymethyl)furfurals from Carbohydrates Using Zinc Chloride/Acetic Acid Catalyst System and Their Synthetic Value Addition.

    Bhat, Navya Subray / Yadav, Abhishek Kumar / Karmakar, Manisha / Thakur, Arunabha / Mal, Sib Sankar / Dutta, Saikat

    ACS omega

    2023  Volume 8, Issue 8, Page(s) 8119–8124

    Abstract: 5-(Acyloxymethyl)furfurals (AMFs) have received considerable attention as hydrophobic, stable, and halogen-free congeners of 5-(hydroxymethyl)furfural (HMF) for synthesizing biofuels and biochemicals. In this work, AMFs have been prepared directly from ... ...

    Abstract 5-(Acyloxymethyl)furfurals (AMFs) have received considerable attention as hydrophobic, stable, and halogen-free congeners of 5-(hydroxymethyl)furfural (HMF) for synthesizing biofuels and biochemicals. In this work, AMFs have been prepared directly from carbohydrates in satisfactory yields using the combination of ZnCl
    Language English
    Publishing date 2023-02-20
    Publishing country United States
    Document type Journal Article
    ISSN 2470-1343
    ISSN (online) 2470-1343
    DOI 10.1021/acsomega.3c00143
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  8. Article ; Online: Cu(II) Promoted C(sp

    Das, Krishna Mohan / Pal, Adwitiya / Surya T, Lakshmi / Roy, Lisa / Thakur, Arunabha

    Chemistry (Weinheim an der Bergstrasse, Germany)

    2023  Volume 30, Issue 8, Page(s) e202303776

    Abstract: We report the Cu(II) catalyzed synthesis of β-disubstituted ketones from styrene via oxo-alkylation with unactivated cycloalkanes as the alkylating agent in presence of tert-butylhydroperoxide (TBHP) and 1-methylimidazole as oxidant and base respectively. ...

    Abstract We report the Cu(II) catalyzed synthesis of β-disubstituted ketones from styrene via oxo-alkylation with unactivated cycloalkanes as the alkylating agent in presence of tert-butylhydroperoxide (TBHP) and 1-methylimidazole as oxidant and base respectively. β-disubstituted ketones are known to be synthesized by using either expensive Ru/Ir complexes, or low-cost metal complexes (e. g., Fe, Mn) with activated species like aldehyde, acid, alcohol, or phthalimide derivatives as the alkylating agent, however, use of unactivated cycloalkanes directly as the alkylating agent remains challenging. A wide range of aliphatic C-H substrates as well as various olefinic arenes and heteroarene (35 substrates including 14 new substrates) are well-tolerated in this method. Hammett analysis shed more light on the substitution effect in the olefinic part on the overall mechanism. Furthermore, the controlled experiments, kinetic isotope effect study, and theoretical calculations (DFT) enable us to gain deeper insight of mechanistic intricacies of this new simple and atom-economic methodology.
    Language English
    Publishing date 2023-12-18
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 1478547-X
    ISSN 1521-3765 ; 0947-6539
    ISSN (online) 1521-3765
    ISSN 0947-6539
    DOI 10.1002/chem.202303776
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  9. Article ; Online: A novel quinoline-based NNN-pincer Cu(II) complex as a superior catalyst for oxidative esterification of allylic C(sp

    Das, Krishna Mohan / Pal, Adwitiya / Adarsh, Nayarassery N / Thakur, Arunabha

    Organic & biomolecular chemistry

    2022  Volume 20, Issue 17, Page(s) 3540–3549

    Abstract: We report for the first time that the quinoline-based NNN-pincer Cu(II) complex acts as an air stable superior catalyst for the oxidative cross-coupling of the allyl ... ...

    Abstract We report for the first time that the quinoline-based NNN-pincer Cu(II) complex acts as an air stable superior catalyst for the oxidative cross-coupling of the allyl sp
    MeSH term(s) Catalysis ; Esterification ; Esters ; Oxidative Stress ; Quinolines
    Chemical Substances Esters ; Quinolines
    Language English
    Publishing date 2022-05-04
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2097583-1
    ISSN 1477-0539 ; 1477-0520
    ISSN (online) 1477-0539
    ISSN 1477-0520
    DOI 10.1039/d2ob00220e
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Resonant transport in a highly conducting single molecular junction

    Pabi, Biswajit / Marek, Štepán / Pal, Adwitiya / Kumari, Puja / Ray, Soumya Jyoti / Thakur, Arunabha / Korytár, Richard / Pal, Atindra Nath

    Nanoscale

    2023  Volume 15, Issue 31, Page(s) 12995–13008

    Abstract: Achieving highly transmitting molecular junctions through resonant transport at low bias is key to the next-generation low-power molecular devices. Although resonant transport in molecular junctions was observed by connecting a molecule between the metal ...

    Abstract Achieving highly transmitting molecular junctions through resonant transport at low bias is key to the next-generation low-power molecular devices. Although resonant transport in molecular junctions was observed by connecting a molecule between the metal electrodes
    Language English
    Publishing date 2023-08-10
    Publishing country England
    Document type Journal Article
    ZDB-ID 2515664-0
    ISSN 2040-3372 ; 2040-3364
    ISSN (online) 2040-3372
    ISSN 2040-3364
    DOI 10.1039/d3nr02585c
    Database MEDical Literature Analysis and Retrieval System OnLINE

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