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Dash BR, Gardas RL, Mishra AK. Probing the heterogeneity of molecular level organization of ionic liquids: a comparative study using neutral Nile red and cationic Nile blue sulfate as fluorescent probes for butyrolactam-based protic ionic liquids. Phys Chem Chem Phys 2024; 26:13350-13363. [PMID: 38639928 DOI: 10.1039/d4cp00520a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/20/2024]
Abstract
Ionic liquids (ILs) are liquid salts composed of cations and anions, known for their significant local heterogeneity at the molecular level. To understand the microheterogeneity with regard to their local polarity and local viscosity, we have used two structurally similar but chemically distinguishable fluorescent probes: Nile red (NR), a neutral molecule, and Nile blue sulfate (NBS), a charged molecule. A comparative study of the response of the two probes to the molecular level heterogeneity of ILs is expected to provide a better clarity of understanding regarding the charged polar domain and the uncharged hydrophobic domain of ILs. Towards this, we synthesized two butyrolactam-based protic ionic liquids (PILs), i.e., BTF and BTD, with the same ionic headgroup ([BT]+) and different alkyl tails ([RCOO]-), where {R = H, C11H23}. BTF has no significant hydrophobic domain, whereas BTD has a larger hydrophobic domain. Temperature-dependent fluorescence parameters such as fluorescence intensity, lifetime, and anisotropy were measured for both NR and NBS molecules. The use of a pair of structurally similar but ionically different probes enables differential estimation of parameters like the microviscosity of a domain using the fluorescence anisotropy parameter (r). The absorption and emission spectra of both probe molecules are observed to be blue shifted upon going from BTF to BTD. NR showed a significant blue shift in absorption and emission band maxima. Conversely, NBS exhibited a small wavelength shift, possibly influenced by the preferred location of their charged head group domain. Temperature-dependent rotational relaxation time (θ) of NR in BTD is smaller than that of NBS by 60-70%, indicating that stronger charge-charge interactions exist between the polar domain of BTD and NBS. Moreover, it is observed that the local viscosity of the BTF IL around both probes is similar, whereas there is a considerable difference for the BTD IL. These results are an indication that NBS being charged prefers to locate itself in the charged head group region of the IL, whereas NR being neutral tends to reside both in the hydrophobic domain and in the head group but is predominantly located in the hydrophobic domain.
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Affiliation(s)
- Bignya Rani Dash
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India.
| | - Ramesh L Gardas
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India.
| | - Ashok Kumar Mishra
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India.
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2
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Srirattanasakunsuk P, Boekfa B, Treesukol P, Jarussophon N, Maihom T, Kongpatpanich K, Limtrakul J. Combined Experimental and Theoretical Study of the Synthesis of 5,7-Dihydroxy-4-methylcoumarin via a Pechmann Condensation in the Presence of UiO-66-SO 3H Catalysts. ACS OMEGA 2023; 8:46904-46913. [PMID: 38107951 PMCID: PMC10720004 DOI: 10.1021/acsomega.3c06624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/02/2023] [Revised: 10/09/2023] [Accepted: 11/15/2023] [Indexed: 12/19/2023]
Abstract
An efficient synthesis of 5,7-dihydroxy-4-methylcoumarin from phloroglucinol with ethyl acetoacetate in the UiO-66-SO3H metal-organic framework is reported. The potential of UiO-66-SO3H as a solid catalyst was determined through optimized-condition experiments and quantum molecular calculations. The optimal conditions for the synthesis of 5,7-dihydroxy-4-methylcoumarin with UiO-66-SO3H were as follows: phloroglucinol/ethyl acetoacetate molar ratio = 1:1.6, reaction time = 4 h, and temperature = 140 °C, for which the reaction yield reached 66.0%. The reusability of UiO-66-SO3H catalysts for Pechmann condensation was examined. The activation energy of the reaction occurring on a sulfonic group of the UiO-66-SO3H catalyst was 12.6 kcal/mol, which was significantly lower than 22.6 kcal/mol of the same reaction on the UiO-66 catalyst. To comprehend the reaction mechanism, density functional theory with the ONIOM approach was applied for the synthesis of coumarin on the UiO-66-SO3H and UiO-66 clusters. A possible reaction mechanism was proposed involving three steps: a trans-esterification step, an intramolecular hydroxyalkylation step, and a dehydration step. The rate-determining step was suggested to be the first step which acquired an activation energy of 15.7 and 29.5 kcal/mol, respectively. Information from this study can be used as guidelines to develop more efficient catalytic metal-organic frameworks for various organic syntheses.
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Affiliation(s)
- Pattraporn Srirattanasakunsuk
- Division
of Chemistry, Department of Physical and Material Sciences, Faculty
of Liberal Arts and Science, Kasetsart University, KamphaengSaen Campus, Nakhon, Pathom 73140, Thailand
- Department
of Materials Science and Engineering, School of Molecular Science
and Engineering, Vidyasirimedhi Institute
of Science and Technology, Rayong 21210, Thailand
| | - Bundet Boekfa
- Division
of Chemistry, Department of Physical and Material Sciences, Faculty
of Liberal Arts and Science, Kasetsart University, KamphaengSaen Campus, Nakhon, Pathom 73140, Thailand
- Center
for Advanced Studies in Nanotechnology for Chemical, Food and Agricultural
Industries, Kasetsart University Institute for Advanced Studies, Kasetsart University, Bangkok 10900, Thailand
| | - Piti Treesukol
- Division
of Chemistry, Department of Physical and Material Sciences, Faculty
of Liberal Arts and Science, Kasetsart University, KamphaengSaen Campus, Nakhon, Pathom 73140, Thailand
| | - Nongpanga Jarussophon
- Division
of Chemistry, Department of Physical and Material Sciences, Faculty
of Liberal Arts and Science, Kasetsart University, KamphaengSaen Campus, Nakhon, Pathom 73140, Thailand
| | - Thana Maihom
- Division
of Chemistry, Department of Physical and Material Sciences, Faculty
of Liberal Arts and Science, Kasetsart University, KamphaengSaen Campus, Nakhon, Pathom 73140, Thailand
| | - Kanokwan Kongpatpanich
- Department
of Materials Science and Engineering, School of Molecular Science
and Engineering, Vidyasirimedhi Institute
of Science and Technology, Rayong 21210, Thailand
| | - Jumras Limtrakul
- Department
of Materials Science and Engineering, School of Molecular Science
and Engineering, Vidyasirimedhi Institute
of Science and Technology, Rayong 21210, Thailand
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3
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Chang MY, Guo CR, Ho CH. Knoevenagel Condensation of Acetonedicarboxylates with Aldehydes. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2023.135478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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4
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Yan Z, Liu Y, Wang W, Wang D. Functionalized Nylon 6 Fabric as an Efficient and Recyclable Catalyst for Knoevenagel Condensation. ACS OMEGA 2022; 7:33186-33191. [PMID: 36157727 PMCID: PMC9494687 DOI: 10.1021/acsomega.2c03401] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Accepted: 08/18/2022] [Indexed: 06/16/2023]
Abstract
Nylon 6 fabrics were chemically modified via reduction with BH3 for being functionalized as heterogeneous base organocatalysts for Knoevenagel condensation. The results of FTIR, XPS, and SEM indicated the successful modification of nylon 6 fabrics. With a low catalytic dosage of 6.6 mol % and a short reaction time (2 h), the fabric catalysts were well applicable to Knoevenagel condensation of a wide range of substrates and up to 98% yield could be obtained. In addition, the fabric catalysts have some beneficial advantages in terms of easy separation, good reusability, and recyclability (up to 10 times).
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Verma S, Verma A, Mondal M, Prasad NE, Srivastava J, Singh S, Verma JP, Saha S. Drastic influence of amide functionality and alkyl chain length dependent physical, thermal and structural properties of new pyridinium-amide cation based biodegradable room temperature ionic liquids. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.131679] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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6
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Panda J, Raiguru BP, Mishra M, Mohapatra S, Nayak S. Recent Advances in the Synthesis of Imidazo[1,2‐
a
]pyridines: A Brief Review. ChemistrySelect 2022. [DOI: 10.1002/slct.202103987] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Jasmine Panda
- Organic Synthesis Laboratory Department of Chemistry Ravenshaw University Cuttack 753003 Odisha India
| | - Bishnu P. Raiguru
- Organic Synthesis Laboratory Department of Chemistry Ravenshaw University Cuttack 753003 Odisha India
| | - Mitali Mishra
- Organic Synthesis Laboratory Department of Chemistry Ravenshaw University Cuttack 753003 Odisha India
| | - Seetaram Mohapatra
- Organic Synthesis Laboratory Department of Chemistry Ravenshaw University Cuttack 753003 Odisha India
| | - Sabita Nayak
- Organic Synthesis Laboratory Department of Chemistry Ravenshaw University Cuttack 753003 Odisha India
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Angajala G, Aruna V, Pavan P, Guruprasad Reddy P. Biocatalytic one pot three component approach: Facile synthesis, characterization, molecular modelling and hypoglycemic studies of new thiazolidinedione festooned quinoline analogues catalyzed by alkaline protease from Aspergillus niger. Bioorg Chem 2021; 119:105533. [PMID: 34902647 DOI: 10.1016/j.bioorg.2021.105533] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 11/26/2021] [Accepted: 11/27/2021] [Indexed: 12/01/2022]
Abstract
A novel ANAP (Aspergillus niger from alkaline protease) catalyzed one pot three component approach in the synthesis of new thiazolidinedione festooned quinoline analogues via Knoevenagel condensation and N-alkylation have been reported. The catalytic effect of enzyme was monitored and optimized by adjusting various parameters including catalyst concentration, choice of solvent and temperature. The isolated alkaline protease exhibits favorable features for the reaction response such as the shorter reaction time, simple work-up procedure, clean reaction profiles and excellent product yields through reusability of the catalyst upto five cycles. In silico molecular docking simulations were carried out to find out the effective binding affinity of the synthesized quinoline analogues 4(a-i) towards PPARγ protein (Id-2XKW). In vitro α-amylase and α-glucosidase assays were performed for hypoglycemic activity evaluation. In vivo hypoglycemic studies carried out on streptozotocin (SZT) induced diabetic male albino rats have shown that compounds 4e and 4f significantly reduced blood glucose levels with percentage reduction of 43.7 ± 0.91 and 45.6 ± 0.28 at a concentration of 50 mg/kg body wt. The results obtained from molecular docking simulations and in vitro enzyme assays are in consistent with in-vivo studies which clearly demonstrated that out of the synthesized quinoline analogues, compounds 4e and 4f possess promising hypoglycemic activity which was on par to that of standards pioglitazone and rosiglitazone respectively.
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Affiliation(s)
- Gangadhara Angajala
- Department of Chemistry, Kalasalingam Academy of Research and Education, Anand nagar, Krishnankoil 626126, Tamilnadu, India.
| | - Valmiki Aruna
- Department of Chemistry, Kalasalingam Academy of Research and Education, Anand nagar, Krishnankoil 626126, Tamilnadu, India
| | - Pasupala Pavan
- Department of Humanities and Basic Sciences, G. Pulla Reddy Engineering College, Kurnool 518007, Andhra Pradesh, India
| | - Pulikanti Guruprasad Reddy
- School of Basic Sciences, Indian Institute of Technology Mandi, Kamand 175005, Himachal Pradesh, India; Institute for Drug Research, School of Pharmacy, Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem 91120, Israel
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8
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Kurskova AO, Dotsenko VV, Frolov KA, Aksenov NA, Aksenova IV, Shcherbakov SV, Ovcharov SN, Krivokolysko DS, Krivokolysko SG. New Methods of Synthesis, Structure and Aminomethylation of 4-Imino-2-(dicyanomethylene)-3-azaspiro[5.5]undecane-1,5-dicarbonitrile. RUSS J GEN CHEM+ 2021. [DOI: 10.1134/s1070363221060037] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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9
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Theresa LV, Ponmalakunnu S, Baby AM, Sreekumar K. Ethylene Glycol: Urea: NH
4
Cl Low Melting Mixture‐Assisted Reactions between Aromatic Aldehydes and Active Methylene Compounds. ChemistrySelect 2021. [DOI: 10.1002/slct.202102121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Letcy V. Theresa
- Department of Applied Chemistry Cochin University of Science and Technology Cochin 682022 Kerala India
| | - Saranya Ponmalakunnu
- Department of Applied Chemistry Cochin University of Science and Technology Cochin 682022 Kerala India
| | - Anju M. Baby
- Department of Applied Chemistry Cochin University of Science and Technology Cochin 682022 Kerala India
| | - Krishnapillai Sreekumar
- Department of Applied Chemistry Cochin University of Science and Technology Cochin 682022 Kerala India
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Dar'in D, Kantin G, Kalinin S, Sharonova T, Bunev A, Ostapenko GI, Nocentini A, Sharoyko V, Supuran CT, Krasavin M. Investigation of 3-sulfamoyl coumarins against cancer-related IX and XII isoforms of human carbonic anhydrase as well as cancer cells leads to the discovery of 2-oxo-2H-benzo[h]chromene-3-sulfonamide - A new caspase-activating proapoptotic agent. Eur J Med Chem 2021; 222:113589. [PMID: 34147910 DOI: 10.1016/j.ejmech.2021.113589] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 05/23/2021] [Accepted: 05/27/2021] [Indexed: 02/08/2023]
Abstract
Herein we report the synthesis of a set of seventeen 3-sulfonamide substituted coumarin derivatives. Prepared compounds were tested in vitro for inhibition of four physiologically relevant isoforms of the metalloenzyme human carbonic anhydrase (hCA, EC 4.2.1.1). Several coumarin sulfonamides displayed low nanomolar KI values against therapeutically relevant hCA II, IX, and XII, whereas they did not potently inhibit hCA I. Some of these compounds exerted a concentration-dependent antiproliferative action toward RT4 human bladder cancer and especially A431 human epidermoid carcinoma cell lines. In the meantime, the viability of non-tumorigenic hTERT immortalized human foreskin fibroblast cell line Bj-5ta was not significantly affected by the obtained derivatives. Interestingly, compound 10q (2-oxo-2H-benzo [h]chromene-3-sulfonamide) showed a profound and selective dose-dependent inhibition of A431 cell growth with low nanomolar IC50 values. We demonstrated that 10q possessed a concentration-dependent apoptosis induction activity associated with caspase 3/7 activation in cancer cells. As carbonic anhydrase isoforms in question were not potently inhibited by this compound, its antiproliferative effects likely involve other mechanisms, such as DNA intercalation. Compound 10q clearly represents a viable lead for further development of new-generation anticancer agents.
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Affiliation(s)
- Dmitry Dar'in
- Saint Petersburg State University, Saint Petersburg, 199034, Russian Federation
| | - Grigory Kantin
- Saint Petersburg State University, Saint Petersburg, 199034, Russian Federation
| | - Stanislav Kalinin
- Saint Petersburg State University, Saint Petersburg, 199034, Russian Federation
| | - Tatiana Sharonova
- Saint Petersburg State University, Saint Petersburg, 199034, Russian Federation
| | - Alexander Bunev
- Medicinal Chemistry Center, Togliatti State University, Togliatti, 445020, Russian Federation
| | - Gennady I Ostapenko
- Medicinal Chemistry Center, Togliatti State University, Togliatti, 445020, Russian Federation
| | - Alessio Nocentini
- Neurofarba Department, Universita Degli Studi di Firenze, Florence, 50019, Italy
| | - Vladimir Sharoyko
- Saint Petersburg State University, Saint Petersburg, 199034, Russian Federation
| | - Claudiu T Supuran
- Neurofarba Department, Universita Degli Studi di Firenze, Florence, 50019, Italy.
| | - Mikhail Krasavin
- Saint Petersburg State University, Saint Petersburg, 199034, Russian Federation.
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11
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A Facile Sodium Ethoxide Mediated Knoevenagel Condensation for Production of Ethyl(E)-2-Cyano-3-Substituted Aryl/Alkyl Acrylates. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES INDIA SECTION A-PHYSICAL SCIENCES 2021. [DOI: 10.1007/s40010-021-00746-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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12
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Angajala G, Aruna V, Subashini R. Visible light induced nano copper catalyzed one pot synthesis of novel quinoline bejeweled thiobarbiturates as potential hypoglycemic agents. J Heterocycl Chem 2021. [DOI: 10.1002/jhet.4271] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Gangadhara Angajala
- Department of Chemistry Kalasalingam Academy of Research and Education Krishnankoil Tamilnadu India
| | - Valmiki Aruna
- Department of Chemistry Kalasalingam Academy of Research and Education Krishnankoil Tamilnadu India
| | - Radhakrishnan Subashini
- Department of Chemistry Arignar Anna Government Arts College for women Walajapet, Vellore Tamilnadu India
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13
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Appaturi JN, Ratti R, Phoon BL, Batagarawa SM, Din IU, Selvaraj M, Ramalingam RJ. A review of the recent progress on heterogeneous catalysts for Knoevenagel condensation. Dalton Trans 2021; 50:4445-4469. [PMID: 33720238 DOI: 10.1039/d1dt00456e] [Citation(s) in RCA: 47] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
One of the most crucial attributes of synthetic organic chemistry is to design organic reactions under the facets of green chemistry for the sustainable production of chemicals. Thus, due to the intensified environmental and safety concern, the need for new technologies for conducting chemical transformation has grown. In this regard, there is enormous interest in the use of heterogeneous catalysts as they generally avoid the generation of waste, require fewer toxic reagents, as well as entail easier separation and recycling of the catalyst. α,β-Unsaturated acids have been widely used in various industrial applications and have been identified as one of the most promising chemicals obtained via the Knoevenagel condensation reaction. This review aims to discuss the most pertinent heterogeneous catalytic systems such as zeolites, mesoporous silica, ionic liquids, metal oxides, and graphitic carbon nitride-based catalysts in the Knoevenagel reaction. Ultimately, this review focuses not only on the catalyst but also provides an overall idea and guide for the preparation of new catalysts with outstanding properties by looking at the chemical and engineering aspects such as the reaction conditions and the mechanisms.
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Wienhold M, Molloy JJ, Daniliuc CG, Gilmour R. Coumarins by Direct Annulation: β‐Borylacrylates as Ambiphilic C
3
‐Synthons. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202012099] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Max Wienhold
- Organisch Chemisches Intitut Westfälische Wilhelms-Universität Münster Corrensstraße 36 48149 Münster Germany
| | - John J. Molloy
- Organisch Chemisches Intitut Westfälische Wilhelms-Universität Münster Corrensstraße 36 48149 Münster Germany
| | - Constantin G. Daniliuc
- Organisch Chemisches Intitut Westfälische Wilhelms-Universität Münster Corrensstraße 36 48149 Münster Germany
| | - Ryan Gilmour
- Organisch Chemisches Intitut Westfälische Wilhelms-Universität Münster Corrensstraße 36 48149 Münster Germany
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Wienhold M, Molloy JJ, Daniliuc CG, Gilmour R. Coumarins by Direct Annulation: β-Borylacrylates as Ambiphilic C 3 -Synthons. Angew Chem Int Ed Engl 2021; 60:685-689. [PMID: 32975367 PMCID: PMC7839779 DOI: 10.1002/anie.202012099] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Indexed: 12/26/2022]
Abstract
Modular β-borylacrylates have been validated as programmable, ambiphilic C3 -synthons in the cascade annulation of 2-halo-phenol derivatives to generate structurally and electronically diverse coumarins. Key to this [3+3] disconnection is the BPin unit which serves a dual purpose as both a traceless linker for C(sp2 )-C(sp2 ) coupling, and as a chromophore extension to enable inversion of the alkene geometry via selective energy transfer catalysis. Mild isomerisation is a pre-condition to access 3-substituted coumarins and provides a handle for divergence. The method is showcased in the synthesis of representative natural products that contain this venerable chemotype. Facile entry into π-expanded estrone derivatives modified at the A-ring is disclosed to demonstrate the potential of the method in bioassay development or in drug repurposing.
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Affiliation(s)
- Max Wienhold
- Organisch Chemisches IntitutWestfälische Wilhelms-Universität MünsterCorrensstraße 3648149MünsterGermany
| | - John J. Molloy
- Organisch Chemisches IntitutWestfälische Wilhelms-Universität MünsterCorrensstraße 3648149MünsterGermany
| | - Constantin G. Daniliuc
- Organisch Chemisches IntitutWestfälische Wilhelms-Universität MünsterCorrensstraße 3648149MünsterGermany
| | - Ryan Gilmour
- Organisch Chemisches IntitutWestfälische Wilhelms-Universität MünsterCorrensstraße 3648149MünsterGermany
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16
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Saleh NM, El-Gaby MS, El‐Adl K, Abd El-Sattar NE. Design, green synthesis, molecular docking and anticancer evaluations of diazepam bearing sulfonamide moieties as VEGFR-2 inhibitors. Bioorg Chem 2020; 104:104350. [DOI: 10.1016/j.bioorg.2020.104350] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2020] [Revised: 09/10/2020] [Accepted: 10/03/2020] [Indexed: 12/13/2022]
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17
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Lončarić M, Sušjenka M, Molnar M. An Extensive Study of Coumarin Synthesis via Knoevenagel Condensation in Choline Chloride Based Deep Eutectic Solvents. Curr Org Synth 2020; 17:98-108. [PMID: 32418515 DOI: 10.2174/1570179417666200116155704] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 12/04/2019] [Accepted: 12/31/2019] [Indexed: 01/17/2023]
Abstract
AIM AND OBJECTIVE In order to preserve the environment from harmful organic solvents, a synthesis of coumarin derivatives was performed in deep eutectic solvents, which are considered as "green" due to their characteristics. MATERIALS AND METHODS Choline chloride based deep eutectic solvents (DESs) were employed, both as solvents and as catalysts, in the synthesis of coumarin derivatives via Knoevenagel condensation. In order to find the best DES for coumarin synthesis, 20 DESs were tested for the reaction of salicylaldehyde and dimethyl malonate at 80 °C. RESULTS Among the twenty tested deep eutectic solvents only five were adequate for this kind of synthesis. The best DES for this reaction was found to be the one composed of choline chloride:urea (1:2). Most coumarin compounds were obtained in good to excellent yield. Compounds 1g, 2g and 2p should be pointed out due to their yields of 85, 88 and 98 %, respectively. 3-Acetylcoumarins 5a, 5c, 5d, 5e, 5f and 5g were synthesized under ultrasound irradiation and were also obtained in excellent yields of 90, 95, 98, 93, 94 and 85 %, respectively. CONCLUSION Series of coumarin derivatives were successfully synthesized, either in choline chloide:urea DES at 80 °C or in ultrasound-assisted reaction, from different salicylaldehydes and active methylene compounds. These "green" methods were found to be very effective in Knoevenagel condensation, while DES was recycled for several cycles without any significant influence on the product yield.
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Affiliation(s)
- Melita Lončarić
- Faculty of Food Technology Osijek, Josip Juraj Strossmayer University o, Franje Kuhaca 18, 31000 Osijek, Croatia
| | - Martina Sušjenka
- Department of Biology, Josip Juraj Strossmayer University of Osijek, Cara Hadrijana 8/A, 31000 Osijek, Croatia
| | - Maja Molnar
- Faculty of Food Technology Osijek, Josip Juraj Strossmayer University o, Franje Kuhaca 18, 31000 Osijek, Croatia
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Lie Y, Pellis A, Funes‐Ardoiz I, Sampedro D, Macquarrie DJ, Farmer TJ. Work-hardening Photopolymer from Renewable Photoactive 3,3'-(2,5-Furandiyl)bisacrylic Acid. CHEMSUSCHEM 2020; 13:4140-4150. [PMID: 32663375 PMCID: PMC7496517 DOI: 10.1002/cssc.202000842] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 07/01/2020] [Indexed: 05/16/2023]
Abstract
The design of a photopolymer around a renewable furan-derived chromophore is presented herein. An optimised semi-continuous oxidation method using MnO2 affords 2,5-diformylfuran from 5-(hydroxymethyl)furfural in gram quantities, allowing the subsequent synthesis of 3,3'-(2,5-furandiyl)bisacrylic acid in good yield and excellent stereoselectivity. The photoactivity of the diester of this monomer is confirmed by reaction under UV irradiation, and the proposed [2+2] cycloaddition mechanism supported further by TD-DFT calculations. Oligoesters of the photoreactive furan diacid with various aliphatic diols are prepared via chemo- and enzyme-catalysed polycondensation. The latter enzyme-catalysed (Candida antarctica lipase B) method results in the highest Mn (3.6 kDa), suggesting milder conditions employed with this protocol minimised unwanted side reactions, including untimely [2+2] cycloadditions, whilst preserving the monomer's photoactivity and stereoisomerism. The photoreactive polyester is solvent cast into a film where subsequent initiator-free UV curing leads to an impressive increase in the material stiffness, with work-hardening characteristics observed during tensile strength testing.
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Affiliation(s)
- Yann Lie
- The University of YorkDepartment of ChemistryGreen Chemistry Centre of ExcellenceYO10 5DDHeslingtonYorkUK
| | - Alessandro Pellis
- University of Natural Resources and Life Sciences ViennaDepartment of AgrobiotechnologyInstitute of Environmental BiotechnologyKonrad Lorenz Strasse 203430Tulln an der DonauAustria
| | | | - Diego Sampedro
- Department of ChemistryCentro de Investigación en Síntesis Química (CISQ)Universidad de La RiojaMadre de Dios 53E-26006LogroñoLa RiojaSpain
| | - Duncan J. Macquarrie
- The University of YorkDepartment of ChemistryGreen Chemistry Centre of ExcellenceYO10 5DDHeslingtonYorkUK
| | - Thomas J. Farmer
- The University of YorkDepartment of ChemistryGreen Chemistry Centre of ExcellenceYO10 5DDHeslingtonYorkUK
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Canela-Xandri A, Balcells M, Villorbina G, Christou P, Canela-Garayoa R. Preparation and Uses of Chlorinated Glycerol Derivatives. Molecules 2020; 25:E2511. [PMID: 32481583 PMCID: PMC7321119 DOI: 10.3390/molecules25112511] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 05/19/2020] [Accepted: 05/25/2020] [Indexed: 11/16/2022] Open
Abstract
Crude glycerol (C3H8O3) is a major by-product of biodiesel production from vegetable oils and animal fats. The increased biodiesel production in the last two decades has forced glycerol production up and prices down. However, crude glycerol from biodiesel production is not of adequate purity for industrial uses, including food, cosmetics and pharmaceuticals. The purification process of crude glycerol to reach the quality standards required by industry is expensive and dificult. Novel uses for crude glycerol can reduce the price of biodiesel and make it an economical alternative to diesel. Moreover, novel uses may improve environmental impact, since crude glycerol disposal is expensive and dificult. Glycerol is a versatile molecule with many potential applications in fermentation processes and synthetic chemistry. It serves as a glucose substitute in microbial growth media and as a precursor in the synthesis of a number of commercial intermediates or fine chemicals. Chlorinated derivatives of glycerol are an important class of such chemicals. The main focus of this review is the conversion of glycerol to chlorinated derivatives, such as epichlorohydrin and chlorohydrins, and their further use in the synthesis of additional downstream products. Downstream products include non-cyclic compounds with allyl, nitrile, azide and other functional groups, as well as oxazolidinones and triazoles, which are cyclic compounds derived from ephichlorohydrin and chlorohydrins. The polymers and ionic liquids, which use glycerol as an initial building block, are highlighted, as well.
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Affiliation(s)
- Anna Canela-Xandri
- Department of Chemistry, University of Lleida-Agrotecnio Centre and DBA center, Av. Alcalde Rovira Roure, 191, 25198 Lleida, Spain; (A.C.-X.); (M.B.); (G.V.)
| | - Mercè Balcells
- Department of Chemistry, University of Lleida-Agrotecnio Centre and DBA center, Av. Alcalde Rovira Roure, 191, 25198 Lleida, Spain; (A.C.-X.); (M.B.); (G.V.)
| | - Gemma Villorbina
- Department of Chemistry, University of Lleida-Agrotecnio Centre and DBA center, Av. Alcalde Rovira Roure, 191, 25198 Lleida, Spain; (A.C.-X.); (M.B.); (G.V.)
| | - Paul Christou
- Department of Crop and Forest Sciences, University of Lleida-Agrotecnio Center, Av. Rovira Roure 191, 25198 Lleida, Spain;
- ICREA, Catalan Institute for Research and Advanced Studies, Passeig Lluıís Companys 23, 08010 Barcelona, Spain
| | - Ramon Canela-Garayoa
- Department of Chemistry, University of Lleida-Agrotecnio Centre and DBA center, Av. Alcalde Rovira Roure, 191, 25198 Lleida, Spain; (A.C.-X.); (M.B.); (G.V.)
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20
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Padvi SA, Dalal DS. Task-specific Ionic Liquids as a Green Catalysts and Solvents for Organic Synthesis. CURRENT GREEN CHEMISTRY 2020. [DOI: 10.2174/2213346107666200115153051] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Task-specific ionic liquids (TSILs) have received increased attention over the past few years as a Green Catalysts and Solvents for a large number of organic transformations. The present review article aims to provide an introduction, types of task-specific ionic liquids, preparation/synthesis, physical properties, characterization, use of TSILs as solvent and catalyst in organic synthesis.
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Affiliation(s)
- Swapnil A. Padvi
- Department of Chemistry, Jai Hind Educational Trust Z. B. Patil College, Dhule – 424 002 (M. S.), India
| | - Dipak S. Dalal
- School of Chemical Sciences, Kavayitri Bahinabai Chaudhari North Maharashtra University, Jalgaon - 425 001 (M. S.), India
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21
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Chandra A, Jana K, Moorthy JN. One-Pot Synthesis of 4-Carboalkoxy-Substituted Benzo[ h]coumarins from α- and β-Naphthols and Their Excited-State Properties. ACS OMEGA 2020; 5:207-218. [PMID: 31956767 PMCID: PMC6963932 DOI: 10.1021/acsomega.9b02489] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Accepted: 11/14/2019] [Indexed: 05/27/2023]
Abstract
One-pot synthesis has been developed for 4-carboethoxybenzo[h]coumarins starting from α-/β-naphthols. Accordingly, diverse 4-carboethoxybenzocoumarins can be synthesized in moderate-to-excellent (31-75%) isolated yields. The synthesis involves initial oxidation of naphthols to the intermediary 1,2-naphthoquinones with 2-iodoxybenzoic acid followed by a cascade of reactions, namely, Wittig olefination, Michael addition, β-elimination, and cyclization. Furthermore, we have comprehensively investigated the excited-state properties of differently substituted 4-carboalkoxybenzo[h]coumarins. It is shown that they exhibit low to high fluorescence quantum yields (1-36%) and excited-state lifetimes (ca. 1-7 ns) depending on the substitution pattern and solvent employed.
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22
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Ramaiah MM, Shivananju NS, Shubha PB. A Facile, Efficient and Solvent-Free Titanium (IV) Ethoxide Catalysed Knoevenagel Condensation of Aldehydes and Active Methylenes. LETT ORG CHEM 2020. [DOI: 10.2174/1570178616666190401194641] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
:
Titanium ethoxide has been employed as a novel and efficient reagent for the Knoevenagel
condensation of aldehydes with active methylenes such as diethyl malonate and ethyl cyanoacetate under
solvent free conditions to afford substituted olefins in high to excellent yields. The reaction is suitable
for a variety of aromatic, aliphatic and heteroaromatic aldehydes with various active methylenes.
Parallel to this, microwave irradiation has been utilized to achieve improved reaction rates and enhanced
yields. Herein, we illustrated a convenient method for the preparation of α,β-unsaturated compounds
using both conventional and microwave irradiation methods. An efficient and solvent free
Knoevenagel condensation between aldehydes and active methylenes was developed using titanium
ethoxide. The procedure proved to be successful with a wide range of substrates such as aromatic, aliphatic
and heterocyclic aldehydes and various active methylenes to afford substituted olefins. The reaction
was also carried out under microwave irradiation to accomplish the corresponding olefins with
improved reaction rates, yields and cleaner reaction profiles.We have developed an efficient and novel
methodology for the synthesis of olefinic compounds by Knoevenagel condensation under solvent-free
conditions using titanium ethoxide, for the first time, as a reagent as well as a solvent. This method is
appropriate for the synthesis of a variety of aromatic aldehydes containing various electron-donating
and withdrawing groups, aliphatic and heteroaromatic aldehydes. The significant advantages offered by
this methodology could be applied to various active methylenes in order to offer the corresponding
Knoevenagel products. Thus, we believe that this method delivers high conversions, cleaner reaction
profiles under solvent-free reaction conditions and shorter reaction times, all of which make it a very
useful and attractive approach for the preparation of a wide range of substituted olefins.
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Affiliation(s)
- Manjunatha M. Ramaiah
- Department of Studies in Chemistry, University of Mysore, Manasagangotri, Mysuru, 570006, Karnataka, India
| | - Nanjunda Swamy Shivananju
- Department of Biotechnology, JSS Science and Technology University JSS Technical Institutions Campus, Mysuru- 570006, Karnataka, India
| | - Priya Babu Shubha
- Department of Studies in Chemistry, University of Mysore, Manasagangotri, Mysuru, 570006, Karnataka, India
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23
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Khan I, Zaib S, Ibrar A. New frontiers in the transition-metal-free synthesis of heterocycles from alkynoates: an overview and current status. Org Chem Front 2020. [DOI: 10.1039/d0qo00698j] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
This review highlights the successful utilization of transition-metal-free approaches for the modular assembly of various heterocycles from alkynoates.
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Affiliation(s)
- Imtiaz Khan
- Department of Chemistry
- School of Natural Sciences
- The University of Manchester
- Manchester M13 9PL
- UK
| | - Sumera Zaib
- Department of Biochemistry
- Faculty of Life Sciences
- University of Central Punjab
- Lahore-54590
- Pakistan
| | - Aliya Ibrar
- Department of Chemistry
- Faculty of Natural Sciences
- The University of Haripur
- Haripur, KPK-22620
- Pakistan
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24
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Varga G, Kukovecz Á, Kónya Z, Sipos P, Pálinkó I. Green and selective toluene oxidation–Knoevenagel-condensation domino reaction over Ce- and Bi-based CeBi mixed oxide mixtures. J Catal 2020. [DOI: 10.1016/j.jcat.2019.11.011] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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25
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Cordierite honeycomb monoliths coated with Al(III)/ZrO2 as an efficient and reusable catalyst for the Knoevenagel condensation: A faster kinetics. ARAB J CHEM 2020. [DOI: 10.1016/j.arabjc.2018.07.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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26
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Wilk M, Trzepizur D, Koszelewski D, Brodzka A, Ostaszewski R. Synthesis of (E)-α,β-unsaturated carboxylic esters derivatives from cyanoacetic acid via promiscuous enzyme-promoted cascade esterification/Knoevenagel reaction. Bioorg Chem 2019; 93:102816. [DOI: 10.1016/j.bioorg.2019.02.041] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2019] [Revised: 02/18/2019] [Accepted: 02/19/2019] [Indexed: 12/11/2022]
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27
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Neveselý T, Daniliuc CG, Gilmour R. Sequential Energy Transfer Catalysis: A Cascade Synthesis of Angularly-Fused Dihydrocoumarins. Org Lett 2019; 21:9724-9728. [DOI: 10.1021/acs.orglett.9b03882] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Tomáš Neveselý
- Organisch Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 40, 48149 Münster, Germany
| | - Constantin G. Daniliuc
- Organisch Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 40, 48149 Münster, Germany
| | - Ryan Gilmour
- Organisch Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 40, 48149 Münster, Germany
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28
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Rupanawar BD, Veetil SM, Suryavanshi G. Oxidative Olefination of Benzylamine with an Active Methylene Compound Mediated by Hypervalent Iodine (III). European J Org Chem 2019. [DOI: 10.1002/ejoc.201900970] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Bapurao D. Rupanawar
- Chemical Engineering & Process Development Division; CSIR-National Chemical Laboratory; Dr. Homi Bhaba Road, Pashan, Pune- 411008 Maharashtra India
- Academy of Scientifc and Innovative Research (AcSIR); 201002 Ghaziabad, Uttar Pradesh India
| | - Sruthi M. Veetil
- CSIR-National Chemical Laboratory; Central NMR Facility; Dr. Homi Bhaba Road, Pashan, Pune- 411008 Maharashtra India
| | - Gurunath Suryavanshi
- Chemical Engineering & Process Development Division; CSIR-National Chemical Laboratory; Dr. Homi Bhaba Road, Pashan, Pune- 411008 Maharashtra India
- Academy of Scientifc and Innovative Research (AcSIR); 201002 Ghaziabad, Uttar Pradesh India
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29
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Ghafuri H, Yaghoubi S, Zand HRE. Zinc‐containing ionic liquid as a dual solvent‐catalyst in base‐free condensations under ultrasonic irradiation. Appl Organomet Chem 2019. [DOI: 10.1002/aoc.5149] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Hossein Ghafuri
- Catalysts and Organic Synthesis Research Laboratory, Department of ChemistryIran University of Science and Technology PO Box 16846‐13114 Tehran I. R Iran
| | - Soheila Yaghoubi
- Catalysts and Organic Synthesis Research Laboratory, Department of ChemistryIran University of Science and Technology PO Box 16846‐13114 Tehran I. R Iran
| | - Hamid Reza Esmaili Zand
- Catalysts and Organic Synthesis Research Laboratory, Department of ChemistryIran University of Science and Technology PO Box 16846‐13114 Tehran I. R Iran
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31
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Dhar A, Kumar NS, Sarkar K, Al-Fatesh AS, Ibrahim AA, Fakeeha AH, Vekariya RL. Acidic ionic liquids containing variable cationic head groups for catalytic isomerization of n-hexane. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.111047] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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32
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Burate PA, Javle BR, Desale PH, Kinage AK. Amino Acid Amide based Ionic Liquid as an Efficient Organo-Catalyst for Solvent-free Knoevenagel Condensation at Room Temperature. Catal Letters 2019. [DOI: 10.1007/s10562-019-02840-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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33
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Toniolo R, Dossi N, Bortolomeazzi R, Bonazza G, Daniele S. Volatile aldehydes sensing in headspace using a room temperature ionic liquid-modified electrochemical microprobe. Talanta 2019; 197:522-529. [PMID: 30771971 DOI: 10.1016/j.talanta.2019.01.049] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Revised: 01/10/2019] [Accepted: 01/11/2019] [Indexed: 01/15/2023]
Abstract
The cyclic voltammetric behaviour of propionaldehyde (PA) and hexanaldehyde (HA), in 1-butyl-3-methylimidazolium bis(trifluoromethyl-sulfonyl) imide ([BMIM][NTF2]), 1-butyl-3-methylimidazolium hydrogen sulphate ([BMIM][HSO4]) and 1-butyl-3-methylimidazolium hydroxide ([BMIM][OH]) was investigated at a platinum microelectrode. A clear oxidation process for both aldehydes was recorded only in [BMIM][OH]. On the basis of these evidences, an electrochemical microprobe (EMP), incorporating [BMIM][OH] as electrolyte, was assembled for sensing these aldehydes in gaseous phases. The EMP exposed in the headspace of the liquid aldehydes displayed voltammetric and amperometric responses, which depended on the aldehyde vapour pressures and, consequently, on the temperature employed. The usefulness of the [BMIM][OH] coated EMP for practical applications was assessed in the detection of HA vapour released from squalene (i.e., a lipid simulant matrix) samples spiked with known amounts of the aldehyde. Calibration plots were constructed at 40 °C, 50 °C and 60 °C, using both voltammetry and chronoamperometry. In both cases, good linearity between current and HA concentration in squalene was obtained over the range 3-300 ppm, with correlation coefficients higher than 0.991. Reproducibility, evaluated from at least three replicates, was within 5%. Detection limits, evaluated for a signal-to-noise ratio of 3, were in any case lower than 1.7 ppm. These analytical performances are suitable for monitoring VAs coming from lipid oxidation processes in food. An application concerning the determination of VAs in headspace of sunflower oil during an induced oxidative test to establish its thermal stability was also performed.
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Affiliation(s)
- Rosanna Toniolo
- Department of Agrifood, Environmental and Animal Sciences,University of Udine, via Cotonificio 108, I-33100 Udine, Italy.
| | - Nicolò Dossi
- Department of Agrifood, Environmental and Animal Sciences,University of Udine, via Cotonificio 108, I-33100 Udine, Italy
| | - Renzo Bortolomeazzi
- Department of Agrifood, Environmental and Animal Sciences,University of Udine, via Cotonificio 108, I-33100 Udine, Italy
| | - Gregorio Bonazza
- Department of Molecular Sciences and Nanosystems, University Cà Foscari Venice, via Torino, 155, I-30137 Mestre-Venezia, Italy
| | - Salvatore Daniele
- Department of Molecular Sciences and Nanosystems, University Cà Foscari Venice, via Torino, 155, I-30137 Mestre-Venezia, Italy.
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34
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Jain K, Chaudhuri S, Pal K, Das K. The Knoevenagel condensation using quinine as an organocatalyst under solvent-free conditions. NEW J CHEM 2019. [DOI: 10.1039/c8nj04219e] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
An organocatalytic Knoevenagel condensation has been developed for the synthesis of electrophilic alkenes using natural quinine under green reaction conditions.
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Affiliation(s)
- Kavita Jain
- Department of Chemistry
- School of Chemical Sciences and Technology
- Dr Harisingh Gour University
- Sagar
- India
| | - Saikat Chaudhuri
- Department of Chemistry
- Indian Institute of Science Education and Research (IISER) Bhopal
- Bhopal
- India
| | - Kuntal Pal
- Department of Chemistry
- University of Calcutta
- Kolkata 700 009
- India
| | - Kalpataru Das
- Department of Chemistry
- School of Chemical Sciences and Technology
- Dr Harisingh Gour University
- Sagar
- India
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35
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Das A, Anbu N, SK M, Dhakshinamoorthy A, Biswas S. A functionalized UiO-66 MOF for turn-on fluorescence sensing of superoxide in water and efficient catalysis for Knoevenagel condensation. Dalton Trans 2019; 48:17371-17380. [DOI: 10.1039/c9dt03638e] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A MOF based sensor is reported for specific, rapid, and sensitive sensing of O2·− and effective and recyclable catalysis of Knoevenagel condensation.
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Affiliation(s)
- Aniruddha Das
- Department of Chemistry
- Indian Institute of Technology Guwahati
- 781039 Assam
- India
| | - Nagaraj Anbu
- School of Chemistry
- Madurai Kamaraj University
- Madurai 625021
- India
| | - Mostakim SK
- Department of Chemistry
- Indian Institute of Technology Guwahati
- 781039 Assam
- India
| | | | - Shyam Biswas
- Department of Chemistry
- Indian Institute of Technology Guwahati
- 781039 Assam
- India
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36
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Alirezvani Z, Dekamin MG, Davoodi F, Valiey E. Melamine-Functionalized Chitosan: A New Bio-Based Reusable Bifunctional Organocatalyst for the Synthesis of Cyanocinnamonitrile Intermediates and Densely Functionalized Nicotinonitrile Derivatives. ChemistrySelect 2018. [DOI: 10.1002/slct.201802010] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Zahra Alirezvani
- Pharmaceutical and Heterocyclic Compounds Research Laboratory; Department of Chemistry; Iran University of Science and Technology; Tehran 16846-13114 Iran
| | - Mohammad G. Dekamin
- Pharmaceutical and Heterocyclic Compounds Research Laboratory; Department of Chemistry; Iran University of Science and Technology; Tehran 16846-13114 Iran
| | - Farahnaz Davoodi
- Pharmaceutical and Heterocyclic Compounds Research Laboratory; Department of Chemistry; Iran University of Science and Technology; Tehran 16846-13114 Iran
| | - Ehsan Valiey
- Pharmaceutical and Heterocyclic Compounds Research Laboratory; Department of Chemistry; Iran University of Science and Technology; Tehran 16846-13114 Iran
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37
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Xie B, Xu Y, Tang X, Shu H, Chen T, Zhu X. Comparison of the alkalinity of hydroxypyridine anion-based protic ionic liquids and their catalytic performance for Knoevenagel reaction: The effect of the type of cation and the position of nitrogen atom of anion. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.07.094] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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38
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Gogoi P, Boruah K, Borah R. Synthesis of Triethylamine-Bridged Basic Tricationic Ionic Liquids and Evaluation of Their Catalytic Efficiencies for Preparation of Arylidene or Alkylidenemalononitrile. ChemistrySelect 2018. [DOI: 10.1002/slct.201801719] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Pinky Gogoi
- Department of Chemical Sciences; Tezpur University; Napaam-784028, Assam, Tezpur India
| | - Kabita Boruah
- Department of Chemical Sciences; Tezpur University; Napaam-784028, Assam, Tezpur India
| | - Ruli Borah
- Department of Chemical Sciences; Tezpur University; Napaam-784028, Assam, Tezpur India
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39
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Facile synthesis of imidazo[1,2-a]pyridines promoted by room-temperature ionic liquids under ultrasound irradiation. MONATSHEFTE FUR CHEMIE 2018. [DOI: 10.1007/s00706-018-2238-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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40
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Affiliation(s)
- Martin Obst
- Institut für Organische Chemie; Universität Regensburg; Universitätsstraße 31 93040 Regensburg Germany
| | - Burkhard König
- Institut für Organische Chemie; Universität Regensburg; Universitätsstraße 31 93040 Regensburg Germany
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41
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Salem MA, Helal MH, Gouda MA, Ammar YA, El-Gaby MSA, Abbas SY. An overview on synthetic strategies to coumarins. SYNTHETIC COMMUN 2018. [DOI: 10.1080/00397911.2018.1455873] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Affiliation(s)
- M. A. Salem
- Department of Chemistry, Faculty of Science and Arts, King Khalid University, Mohail Assir, KSA
- Department of Chemistry, Faculty of Science, Al-Azhar University, Cairo, Egypt
| | - M. H. Helal
- Department of Chemistry, Faculty of Science, Al-Azhar University, Cairo, Egypt
- Department of Chemistry, Faculty of Arts and Science, Northern Border University, Rafha, KSA
| | - M. A. Gouda
- Department of Chemistry, Faculty of Science and Arts, Taibah University, Ulla, KSA
- Department of Chemistry, Faculty of Science, Mansoura University, Mansoura, Egypt
| | - Y. A. Ammar
- Department of Chemistry, Faculty of Science, Al-Azhar University, Cairo, Egypt
| | - M. S. A. El-Gaby
- Department of Chemistry, Faculty of Science, Al-Azhar University at Assiut, Assiut, Egypt
| | - S. Y. Abbas
- Organometallic and Organometalloid Chemistry Department, National Research Centre, Cairo, Egypt
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42
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43
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Rupanwar BD, Chavan SS, Shelke AM, Suryavanshi GM. Triflic acid-catalyzed metal-free synthesis of (E)-2-cyanoacrylamides and 3-substituted azetidine-2,4-diones. NEW J CHEM 2018. [DOI: 10.1039/c7nj05169g] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A TfOH-catalyzed highly efficient synthesis of biologically active (E)-2-cyanoacrylamides and 3-substituted azetidine-2,4-diones has been reported with 64–94% yields under metal-free conditions.
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Affiliation(s)
- Bapurao D. Rupanwar
- Chemical Engineering & Process Development Division
- CSIR-National Chemical Laboratory
- Pune-411008
- India
| | - Santosh S. Chavan
- Chemical Engineering & Process Development Division
- CSIR-National Chemical Laboratory
- Pune-411008
- India
| | - Anil M. Shelke
- Chemical Engineering & Process Development Division
- CSIR-National Chemical Laboratory
- Pune-411008
- India
| | - Gurunath M. Suryavanshi
- Chemical Engineering & Process Development Division
- CSIR-National Chemical Laboratory
- Pune-411008
- India
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44
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Castellan T, Cuyamendous C, Fitremann J, Galano JM, Oger C, Durand T, Guillen F, Génisson Y. 1-Ethyl-3-methylimidazolium tartrate chiral ionic liquids: preparation, characterization and opportunities thereof. NEW J CHEM 2018. [DOI: 10.1039/c8nj03175d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Eight tartrate-based imidazolium salts were obtained as synthetically useful chiral ionic liquids with chirality-dependent physico-chemical properties.
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Affiliation(s)
- Tessa Castellan
- SPCMIB Laboratory
- UMR CNRS 5068, Université Paul Sabatier
- 118 route de Narbonne
- Toulouse
- France
| | - Claire Cuyamendous
- Institut des Biomolécules Max Mousseron
- IBMM, Université de Montpellier
- CNRS
- ENSCM
- France
| | - Juliette Fitremann
- IMRCP Laboratory
- Université de Toulouse
- CNRS UMR 5623
- Université Toulouse III - Paul Sabatier
- 118 route de Narbonne
| | - Jean-Marie Galano
- Institut des Biomolécules Max Mousseron
- IBMM, Université de Montpellier
- CNRS
- ENSCM
- France
| | - Camille Oger
- Institut des Biomolécules Max Mousseron
- IBMM, Université de Montpellier
- CNRS
- ENSCM
- France
| | - Thierry Durand
- Institut des Biomolécules Max Mousseron
- IBMM, Université de Montpellier
- CNRS
- ENSCM
- France
| | - Frédéric Guillen
- SPCMIB Laboratory
- UMR CNRS 5068, Université Paul Sabatier
- 118 route de Narbonne
- Toulouse
- France
| | - Yves Génisson
- SPCMIB Laboratory
- UMR CNRS 5068, Université Paul Sabatier
- 118 route de Narbonne
- Toulouse
- France
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45
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Arafa WAA. Sustainable Catalytic Process with a High Eco-scale Score for the Synthesis of Novel Series of Bischalcones through Claisen-Schmidt Condensation. J Heterocycl Chem 2017. [DOI: 10.1002/jhet.3063] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Wael A. A. Arafa
- Chemistry Department, College of Science; Aljouf University; P.O. Box 72341 Sakaka Aljouf Kingdom of Saudi Arabia
- Chemistry Department, Faculty of Science; Fayoum University; P.O. Box 63514 Fayoum City Egypt
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46
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Banerjee B. [Bmim]BF4: A Versatile Ionic Liquid for the Synthesis of Diverse Bioactive Heterocycles. ChemistrySelect 2017. [DOI: 10.1002/slct.201701700] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Bubun Banerjee
- Department of Chemistry; Indus International University, V.P.O. Bathu, Distt. Una; Himachal Pradesh- 174301 India
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47
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Micellization behaviour of surface active N-alkyl pyridinium dodecylsulphate task-specific ionic liquids in aqueous solutions. Colloids Surf A Physicochem Eng Asp 2017. [DOI: 10.1016/j.colsurfa.2017.05.083] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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48
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Koszelewski D, Paprocki D, Madej A, Borys F, Brodzka A, Ostaszewski R. Enzymatic Tandem Approach to Knoevenagel Condensation of Acetaldehyde with Acidic Methylene Compounds in Organic Media. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700936] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Dominik Koszelewski
- Institute of Organic Chemistry; Polish Academy of Sciences; Kasprzaka 44/52 01-224 Warsaw Poland
| | - Daniel Paprocki
- Institute of Organic Chemistry; Polish Academy of Sciences; Kasprzaka 44/52 01-224 Warsaw Poland
| | - Arleta Madej
- Institute of Organic Chemistry; Polish Academy of Sciences; Kasprzaka 44/52 01-224 Warsaw Poland
| | - Filip Borys
- Institute of Organic Chemistry; Polish Academy of Sciences; Kasprzaka 44/52 01-224 Warsaw Poland
| | - Anna Brodzka
- Institute of Organic Chemistry; Polish Academy of Sciences; Kasprzaka 44/52 01-224 Warsaw Poland
| | - Ryszard Ostaszewski
- Institute of Organic Chemistry; Polish Academy of Sciences; Kasprzaka 44/52 01-224 Warsaw Poland
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49
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Majhi D, Sarkar M. Probing the microscopic structural organization of neat ionic liquids (ILs) and ionic liquid-based gels through resonance energy transfer (RET) studies. Phys Chem Chem Phys 2017; 19:23194-23203. [DOI: 10.1039/c7cp04728b] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
With the aim to understand the role of the ionic constituents of ionic liquids (ILs) in their structural organization, resonance energy transfer (RET) studies between ionic liquids (donor) and rhodamine 6G (acceptor) have been investigated.
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Affiliation(s)
- Debashis Majhi
- School of Chemical Sciences
- National Institute of Science Education and Research
- HBNI
- Bhubaneswar
- India
| | - Moloy Sarkar
- School of Chemical Sciences
- National Institute of Science Education and Research
- HBNI
- Bhubaneswar
- India
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50
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[Bmim]OH mediated Cu-catalyzed azide–alkyne cycloaddition reaction: A potential green route to 1,4-disubstituted 1,2,3-triazoles. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.11.014] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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