1
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Li Y, Castañeda-Bagatella DM, Kakkad D, Ai Y, Chen H, Champagne PA. Synthetic and mechanistic study on the conjugate isothiocyanation of enones with trimethylsilyl isothiocyanate. Org Biomol Chem 2023. [PMID: 38009326 DOI: 10.1039/d3ob01710a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2023]
Abstract
Alkyl isothiocyanates (R-NCS) have pharmacological applications and provide a synthetic handle to various functional groups including thioureas. There are however few methods to access alkyl isothiocyanates through the creation of the C-N bond. We have developed a simple approach for the conjugate isothiocyanation of enones by trimethylsilyl isothiocyanate (TMSNCS), which proceeds through the 1,4-addition of the weak isothiocyanate nucleophile to activated enones in the absence of external promoters. This method avoids the direct use of highly toxic acids and bases, produces β-isothiocyanato carbonyl products in yields of 87-98% under mild conditions (less than 6 hours at 0 °C), and displays wide functional group tolerance. Density functional theory calculations highlighted competing cationic and anionic mechanisms, where the enone activation by the TMSNCS reagent is accelerated in protic solvents. The selective formation of the isothiocyanate vs. thiocyanate isomers is explained by the thermodynamically-controlled nature of the reaction in which only the conjugate isothiocyanation is exergonic.
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Affiliation(s)
- Yanmei Li
- Department of Chemistry and Environmental Science, New Jersey Institute of Technology, Newark, NJ 07102, USA.
| | - Diana M Castañeda-Bagatella
- Department of Chemistry and Environmental Science, New Jersey Institute of Technology, Newark, NJ 07102, USA.
| | - Dhyeyi Kakkad
- Department of Chemistry and Environmental Science, New Jersey Institute of Technology, Newark, NJ 07102, USA.
| | - Yongling Ai
- Department of Chemistry and Environmental Science, New Jersey Institute of Technology, Newark, NJ 07102, USA.
| | - Hao Chen
- Department of Chemistry and Environmental Science, New Jersey Institute of Technology, Newark, NJ 07102, USA.
| | - Pier Alexandre Champagne
- Department of Chemistry and Environmental Science, New Jersey Institute of Technology, Newark, NJ 07102, USA.
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2
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Synthesis, characterization of 1,2,4-triazolidine-3-thione tethered beta-aryl butanoic acid and butanoate derivatives as potent antimicrobial and antioxidant agents and their molecular docking studies. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2023.135003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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3
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An efficient and expeditious synthesis of 1,2,4-triazolidine-3-thiones using meglumine as a reusable catalyst in water. J CHEM SCI 2022. [DOI: 10.1007/s12039-022-02087-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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4
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Zhang N, Yu X, Zhang Y. Recent Advances of Thiamine in Organic Synthesis. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Ning Zhang
- School of Chemistry and Pharmaceutical Engineering Jilin Institute of Chemical Technology Jilin 132022 People's Republic of China
- College of Chemistry Jilin University Changchun 130012 People's Republic of China
| | - Xue Yu
- School of Chemistry and Pharmaceutical Engineering Jilin Institute of Chemical Technology Jilin 132022 People's Republic of China
| | - Yuewei Zhang
- School of Chemistry and Pharmaceutical Engineering Jilin Institute of Chemical Technology Jilin 132022 People's Republic of China
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5
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Dutta A, Saikia RA, Thakur AJ. A Mechanistic approach to Liquid assisted mechanochemical synthesis of 5‐aryl/spiro‐[1,2,4]‐triazolidine‐3‐thiones: a revisit. European J Org Chem 2022. [DOI: 10.1002/ejoc.202101472] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Anurag Dutta
- Tezpur University Chemical Sciences Napaam 784028 Tezpur INDIA
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6
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Sonawane SA, Pore DM. L-Proline nitrate: An Efficient Amino Acid Ionic Liquid Catalyzed Synthesis of 5-aryl-[1, 2, 4]-triazolidine-3-thiones. LETT ORG CHEM 2022. [DOI: 10.2174/1570178619666220128141519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Abstract:
An environmentally benign, simple, rapid synthesis of 1,2,4-triazolidine-3-thiones at room temperature is reported using amino acid-derived Brønsted acidic ionic liquid L-proline nitrate [Pro+NO3-] from aldehyde and thiosemicarbazide in an aqueous medium. A cost-effective and energy-efficient catalyst with the reusability of up to five cycles without significant loss in the catalytic activity makes this protocol superior. A faster reaction, easy work-up with excellent yields are the added advantages of this protocol.
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Affiliation(s)
- Suraj A. Sonawane
- Department of Chemistry, Shivaji University, Kolhapur, Maharashtra (INDIA)
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7
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Khandebharad A, Sarda S, Kulkarni P, Agrawal B. Visible Light Assisted Synthesis of 5-Aryl-1,2,4-thiazolidine-3-thiones Under Catalyst-free Condition. CURRENT GREEN CHEMISTRY 2020. [DOI: 10.2174/2213346107999200729131533] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Light energy can be considered as an ideal eco-friendly source of energy for green chemistry.
This perspective was used to synthesize 5-aryl-1,2,4-thiazolidine-3-thiones derivative as a quick,
efficient and highly improved protocol. The present method developed an energy competent and integrated
technique by one-pot condensations of aromatic aldehyde and thiosemicarbazide under the
catalyst-free condition in aqueous-alcoholic media. The impact of light on reaction along with mechanical
stirring provided a prominent yield of the product. The mild reaction conditions, short reaction
time and easy workup procedure, avoidance of heavy metal catalyst and harsh reaction conditions
make this protocol greener.
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Affiliation(s)
| | - Swapnil Sarda
- Department of Chemistry, J.E.S. College, Jalna (MS), India
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8
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Pourkarim Z, Nikpassand M. Synthesis, characterization and application of Fe3O4@SiO2@Tannic acid nanoparticles: A novel and magnetically recyclable catalyst for one-pot synthesis of novel 5-pyrazolin-1,2,4-triazolidine-3-ones (thiones). J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.128433] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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9
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Aly AA, A. Hassan A, Makhlouf MM, Bräse S. Chemistry and Biological Activities of 1,2,4-Triazolethiones-Antiviral and Anti-Infective Drugs. Molecules 2020; 25:E3036. [PMID: 32635156 PMCID: PMC7412134 DOI: 10.3390/molecules25133036] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2020] [Revised: 06/24/2020] [Accepted: 06/25/2020] [Indexed: 11/16/2022] Open
Abstract
Mercapto-substituted 1,2,4-triazoles are very interesting compounds as they play an important role in chemopreventive and chemotherapeutic effects on cancer. In recent decades, literature has been enriched with sulfur- and nitrogen-containing heterocycles which are used as a basic nucleus of different heterocyclic compounds with various biological applications in medicine and also occupy a huge part of natural products. Therefore, we shed, herein, more light on the synthesis of this interesting class and its application as a biologically active moiety. They might also be suitable as antiviral and anti-infective drugs.
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Affiliation(s)
- Ashraf A. Aly
- Chemistry Department, Faculty of Science, Minia University, El-Minia 61519, Egypt; (A.A.H.); (M.M.M.)
| | - Alaa A. Hassan
- Chemistry Department, Faculty of Science, Minia University, El-Minia 61519, Egypt; (A.A.H.); (M.M.M.)
| | - Maysa M. Makhlouf
- Chemistry Department, Faculty of Science, Minia University, El-Minia 61519, Egypt; (A.A.H.); (M.M.M.)
| | - Stefan Bräse
- Institute of Organic Chemistry, Karlsruhe Institute of Technology, 76131 Karlsruhe, Germany
- Institute of Biological and Chemical Systems (IBCS-FMS), Karlsruhe Institute of Technology, 76344 Eggenstein-Leopoldshafen, Germany
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10
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Novel, green and sustainable route for synthesis of 5-aryl-4-phenyl-1,2,4-triazolidine-3-thiones. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152015] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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11
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Mhaldar PM, Pore DM. Envirocat EPZ-10: An Efficient Catalyst for the Synthesis of 1,2,4- Triazolidine-3-thiones. LETT ORG CHEM 2020. [DOI: 10.2174/1570178616666191019144317] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A simple and environmentally benign room temperature synthesis of 1,2,4-triazolidine-3-
thiones is described using Envirocat EPZ-10R as a solid acid catalyst in the aqueous medium. The use
of Envirocat EPZ-10R as a green catalyst, reusability of the catalyst, water as a universal solvent and
good yields of the product are the attractive features of the present method.
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Affiliation(s)
- Pradeep M. Mhaldar
- Department of Chemistry, Shivaji University, Kolhapur, Maharashtra 416004, India
| | - Dattaprasad M. Pore
- Department of Chemistry, Shivaji University, Kolhapur, Maharashtra 416004, India
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12
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Korade SN, Patil JD, Gaikwad DS, Sonawane SA, Vibhute SP, Dige NC, Mhaldar PM, Pore DM. Synthesis and Biological Activities of Novel Aryldiazo Substituted Heterocycles. ORG PREP PROCED INT 2020. [DOI: 10.1080/00304948.2020.1716625] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Suyog N. Korade
- Department of Chemistry, Shivaji University, Kolhapur, India
| | | | | | | | | | - Nilam C. Dige
- Department of Chemistry, Shivaji University, Kolhapur, India
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13
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Venigalla LS, Maddila S, Jonnalagadda SB. Facile, efficient, catalyst-free, ultrasound-assisted one-pot green synthesis of triazole derivatives. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2020. [DOI: 10.1007/s13738-020-01887-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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14
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Patil PJ, Salunke GD, Deshmukh MB, Hangirgekar SP, Chandam DR, Sankpal SA. Thiamine Hydrochloride Catalyzed Synthesis of 1,2,4‐Triazolidine‐3‐thiones in Aqueous Medium. ChemistrySelect 2019. [DOI: 10.1002/slct.201903646] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
| | - Govind D. Salunke
- Department of ChemistryShivaji University Kolhapur 416004 India
- Department of ChemistryRaje Ramrao Mahavidyalaya Jath 416404 India
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15
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Mahajan PG, Dige NC, Vanjare BD, Raza H, Hassan M, Seo SY, Kim CH, Lee KH. Synthesis and biological evaluation of 1,2,4-triazolidine-3-thiones as potent acetylcholinesterase inhibitors: in vitro and in silico analysis through kinetics, chemoinformatics and computational approaches. Mol Divers 2019; 24:1185-1203. [PMID: 31396774 DOI: 10.1007/s11030-019-09983-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Accepted: 07/25/2019] [Indexed: 02/08/2023]
Abstract
We have designed and synthesized a novel acidic ionic liquid and explored its catalytic efficiency for the synthesis of 1,2,4-triazolidine-3-thione derivatives. A simple reaction between aldehydes and thiosemicarbazide for short time in 60:40 v/v water/ethanol at room temperature offers target 1,2,4-triazolidine-3-thione derivatives. The formation of target compounds is confirmed by NMR, IR and ESI-MS analysis. Pleasingly, synthesized compounds show noteworthy acetylcholinesterase (AChE) inhibitory activity with much lower IC50 values 0.0269 ± 0.0021-1.1725 ± 0.0112 μM than standard Neostigmine methylsulphate. In addition, synthesized 1,2,4-triazolidine-3-thiones exhibits significant free radical scavenging activity as compared to standard vitamin C. The studies on validation of Lipinski's rule through chemoinformatics properties and molecular docking analysis are in support of in vitro analysis. Therefore, overall present study illustrates synthesis of some new 1,2,4-triazolidines-3-thiones which can serve as a template for drug designing such as AChE inhibitors. Herein, we proposed ionic liquid-catalyzed ease of synthetic approach for medicinally important 1,2,4-triazolidine-3-thiones and their bio-evaluations.
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Affiliation(s)
- Prasad G Mahajan
- Department of Chemistry, Kongju National University, Gongju, Chungnam, 32588, Republic of Korea
| | - Nilam C Dige
- Department of Biological Sciences, Kongju National University, Gongju, Chungnam, 32588, Republic of Korea
| | - Balasaheb D Vanjare
- Department of Chemistry, Kongju National University, Gongju, Chungnam, 32588, Republic of Korea
| | - Hussain Raza
- Department of Biological Sciences, Kongju National University, Gongju, Chungnam, 32588, Republic of Korea
| | - Mubashir Hassan
- Institute of Molecular Biology and Biotechnology, The University of Lahore, Defence Road, Lahore, 54590, Pakistan
| | - Sung-Yum Seo
- Department of Biological Sciences, Kongju National University, Gongju, Chungnam, 32588, Republic of Korea.
| | - Chong- Hyeak Kim
- Center for Chemical Analysis, Korea Research Institute of Chemical Technology, Yuseong, Daejeon, 34114, Republic of Korea
| | - Ki Hwan Lee
- Department of Chemistry, Kongju National University, Gongju, Chungnam, 32588, Republic of Korea.
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16
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Kerru N, Bhaskaruni SVHS, Gummidi L, Maddila SN, Singh P, Jonnalagadda SB. Efficient synthesis of novel pyrazole-linked 1,2,4-triazolidine-3-thiones using bismuth on zirconium oxide as a recyclable catalyst in aqueous medium. Mol Divers 2019; 24:345-354. [PMID: 31098860 DOI: 10.1007/s11030-019-09957-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Accepted: 05/08/2019] [Indexed: 11/24/2022]
Abstract
The Bi2O3 loading on ZrO2 as heterogeneous catalyst was established as an extremely efficient catalyst for the synthesis of a series of novel 5-(1-(2,4-dinitrophenyl)-3-substituted-phenyl-1H-pyrazol-4-yl)-1,2,4-triazolidine-3-thione derivatives (3a-o) with high yields (90-96%) by reaction of 1-(2,4-dinitrophenyl)-3-substituted-phenyl-1H-pyrazole-4-carbaldehydes and thiosemicarbazide using water as a greener solvent at 80 °C within 30-45 min. Materials with different percentages of Bi2O3 on ZrO2 were prepared by simple wet impregnation method. The synthesized material has been characterized by various techniques (XRD, TEM, SEM, BET). 2.5% Bi2O3/ZrO2 proved superior catalyst. The Bi2O3/ZrO2 catalyst is easily recoverable and reused up to sixth run with no loss of activity. Excellent yields, short reaction time, avoidance of hazardous solvents, and no need for chromatographic purifications are the proven advantages.
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Affiliation(s)
- Nagaraju Kerru
- School of Chemistry and Physics, University of KwaZulu-Natal, Westville Campus, Chiltern Hills, Durban, 4000, South Africa
| | - Sandeep V H S Bhaskaruni
- School of Chemistry and Physics, University of KwaZulu-Natal, Westville Campus, Chiltern Hills, Durban, 4000, South Africa
| | - Lalitha Gummidi
- School of Chemistry and Physics, University of KwaZulu-Natal, Westville Campus, Chiltern Hills, Durban, 4000, South Africa
| | - Surya Narayana Maddila
- School of Chemistry and Physics, University of KwaZulu-Natal, Westville Campus, Chiltern Hills, Durban, 4000, South Africa
| | - Parvesh Singh
- School of Chemistry and Physics, University of KwaZulu-Natal, Westville Campus, Chiltern Hills, Durban, 4000, South Africa
| | - Sreekantha B Jonnalagadda
- School of Chemistry and Physics, University of KwaZulu-Natal, Westville Campus, Chiltern Hills, Durban, 4000, South Africa.
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17
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Kerru N, Bhaskaruni SV, Gummidi L, Maddila SN, Rana S, Singh P, Jonnalagadda SB. Synthesis of novel pyrazole‐based triazolidin‐3‐one derivatives by using ZnO/ZrO
2
as a reusable catalyst under green conditions. Appl Organomet Chem 2019. [DOI: 10.1002/aoc.4722] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Nagaraju Kerru
- School of Chemistry & PhysicsUniversity of KwaZulu‐Natal Westville Campus, Chiltern Hills Durban 4000 South Africa
| | - Sandeep V.H.S. Bhaskaruni
- School of Chemistry & PhysicsUniversity of KwaZulu‐Natal Westville Campus, Chiltern Hills Durban 4000 South Africa
| | - Lalitha Gummidi
- School of Chemistry & PhysicsUniversity of KwaZulu‐Natal Westville Campus, Chiltern Hills Durban 4000 South Africa
| | - Surya Narayana Maddila
- School of Chemistry & PhysicsUniversity of KwaZulu‐Natal Westville Campus, Chiltern Hills Durban 4000 South Africa
| | - Surjyakanta Rana
- School of Chemistry & PhysicsUniversity of KwaZulu‐Natal Westville Campus, Chiltern Hills Durban 4000 South Africa
| | - Parvesh Singh
- School of Chemistry & PhysicsUniversity of KwaZulu‐Natal Westville Campus, Chiltern Hills Durban 4000 South Africa
| | - Sreekantha B. Jonnalagadda
- School of Chemistry & PhysicsUniversity of KwaZulu‐Natal Westville Campus, Chiltern Hills Durban 4000 South Africa
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18
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Bhaskaruni SVHS, Gangu KK, Maddila S, Jonnalagadda SB. Our Contributions in Synthesis of Diverse Heterocyclic Scaffolds by Using Mixed Oxides as Heterogeneous Catalysts. CHEM REC 2018; 19:1793-1812. [PMID: 30238597 DOI: 10.1002/tcr.201800077] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Indexed: 11/12/2022]
Abstract
This personal account mainly introduces and reviews our recent contributions in developing different catalyst materials involving mixed oxides and their scope as renewable catalysts in multicomponent reactions to synthesize various novel heterocyclic scaffolds under green conditions. The application of various mixed oxides and their composites in the organic synthesis is emphasized through this review, in order to reveal the versatility, scope and importance of mixed oxides and their interactions during the reaction. We have also briefed the limitations of mixed oxides as catalysts, to put forward the broader prospective in the field.
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Affiliation(s)
- Sandeep V H S Bhaskaruni
- School of Chemistry and Physics, University of KwaZulu-Natal, Westville Campus, Chiltern Hills, Durban, 4000, South Africa
| | - Kranthi Kumar Gangu
- School of Chemistry and Physics, University of KwaZulu-Natal, Westville Campus, Chiltern Hills, Durban, 4000, South Africa
| | - Suresh Maddila
- School of Chemistry and Physics, University of KwaZulu-Natal, Westville Campus, Chiltern Hills, Durban, 4000, South Africa
| | - Sreekantha B Jonnalagadda
- School of Chemistry and Physics, University of KwaZulu-Natal, Westville Campus, Chiltern Hills, Durban, 4000, South Africa
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Ramadan ES, Sharshira EM, El Sokkary RI, Morsy N. Synthesis and antimicrobial evaluation of some heterocyclic compounds from 3-aryl-1-phenyl-1H-pyrazole-4-carbaldehydes. ACTA ACUST UNITED AC 2018. [DOI: 10.1515/znb-2018-0009] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
A new series of chalcones, pyrazolinyl-pyrazoles, pyrazole-4-carbaldehyde oximes, pyrazole-4-carbonitriles, 5-pyrazolyl-1,2,4-triazolidine-3-thiones, and Knoevenagel condensation products was synthesized from 3-aryl-1-phenyl-1H-pyrazole-4-carbaldehydes. Most reactions were carried out either without solvent or in the presence of water as a green solvent. The structure of synthesized compounds was characterized by spectral and elemental analysis. The synthesized compounds were tested in vitro for their antimicrobial activity against Escherichia coli, Staphylococcus aureus, and Candida albicans in comparison with imipenem (intravenous β-lactam antibiotic) and clotrimazole (antifungal medication) as reference drugs by using the agar diffusion technique. 3-Aryl-1-phenyl-1H-pyrazole-4-carbonitriles 8b, 8c, and 8d showed significant antifungal activity against the fungus C. albicans.
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Affiliation(s)
- El Sayed Ramadan
- Department of Chemistry, Faculty of Science , Alexandria University , Alexandria 21524 , A. R. Egypt
| | - Essam M. Sharshira
- Department of Chemistry, Faculty of Science , Alexandria University , Alexandria 21524 , A. R. Egypt
| | - Ramadan I. El Sokkary
- Department of Chemistry, Faculty of Science , Alexandria University , Alexandria 21524 , A. R. Egypt
| | - Noussa Morsy
- Department of Chemistry, Faculty of Science , Alexandria University , Alexandria 21524 , A. R. Egypt
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Maddila SN, Maddila S, Gangu KK, van Zyl WE, Jonnalagadda SB. Sm2O3/Fluoroapatite as a reusable catalyst for the facile, green, one-pot synthesis of triazolidine-3-thione derivatives under aqueous conditions. J Fluor Chem 2017. [DOI: 10.1016/j.jfluchem.2017.01.012] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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21
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Affiliation(s)
- Devidas A. Mali
- Department of Pharmaceutical Sciences and Technology, Institute of Chemical Technology, Mumbai, India
| | - Vikas N. Telvekar
- Department of Pharmaceutical Sciences and Technology, Institute of Chemical Technology, Mumbai, India
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22
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Moodley V, Maddila S, Jonnalagadda SB, van Zyl WE. Retracted Article: Synthesis of triazolidine-3-one derivatives through the nanocellulose/hydroxyapatite-catalyzed reaction of aldehydes and semicarbazide. NEW J CHEM 2017. [DOI: 10.1039/c7nj00855d] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
First use of the nanocellulose/hydroxyapatite heterogeneous catalyst to produce triazolidine-3-one derivatives from aldehydes and semicarbazide.
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Affiliation(s)
- Vashen Moodley
- School of Chemistry and Physics
- University of KwaZulu-Natal
- Durban
- South Africa
| | - Suresh Maddila
- School of Chemistry and Physics
- University of KwaZulu-Natal
- Durban
- South Africa
| | | | - Werner E. van Zyl
- School of Chemistry and Physics
- University of KwaZulu-Natal
- Durban
- South Africa
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23
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Gangu KK, Maddila S, Maddila SN, Jonnalagadda SB. Nanostructured Samarium Doped Fluorapatites and Their Catalytic Activity towards Synthesis of 1,2,4-Triazoles. Molecules 2016; 21:molecules21101281. [PMID: 27669208 PMCID: PMC6273585 DOI: 10.3390/molecules21101281] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Revised: 09/16/2016] [Accepted: 09/20/2016] [Indexed: 11/16/2022] Open
Abstract
An investigation was conducted into the influence of the amino acids as organic modifiers in the facile synthesis of metal incorporated fluorapatites (FAp) and their properties. The nanostructured Sm doped fluorapatites (Sm-FAp) were prepared by a co-precipitation method using four different amino acids, namely glutamic acid, aspartic acid, glycine and histidine. The materials were characterized by various techniques including X-ray diffraction (XRD), Fourier transform infra-red spectroscopy (FT-IR), field emission scanning electron microscopy (FE-SEM), energy-dispersive X-ray spectroscopy (EDX), high resolution transmission electron microscopy (HR-TEM), N₂-adsorption/desorption isotherm, temperature programmed desorption (TPD) and fluorescence spectrophotometry. Under similar conditions, Sm-FAp prepared using different amino acids exhibited distinctly different morphological structures, surface area and pore properties. Their activity as catalysts was assessed and Sm-FAp/Glycine displayed excellent efficiency in the synthesis of 1,2,4-triazole catalyzing the reaction between 2-nitrobenzaldehyde and thiosemicarbazide with exceptional selectivity and 98% yield in a short time interval (10 min). The study provides an insight into the role of organic modifiers as controllers of nucleation, growth and aggregation which significantly influence the nature and activity of the catalytic sites on Sm-FAp. Sm-FAp could also have potential as photoactive material.
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Affiliation(s)
- Kranthi Kumar Gangu
- School of Chemistry & Physics, University of KwaZulu-Natal, Westville Campus, Chiltern Hills, Durban-4000, South Africa.
| | - Suresh Maddila
- School of Chemistry & Physics, University of KwaZulu-Natal, Westville Campus, Chiltern Hills, Durban-4000, South Africa.
| | - Surya Narayana Maddila
- School of Chemistry & Physics, University of KwaZulu-Natal, Westville Campus, Chiltern Hills, Durban-4000, South Africa.
| | - Sreekantha B Jonnalagadda
- School of Chemistry & Physics, University of KwaZulu-Natal, Westville Campus, Chiltern Hills, Durban-4000, South Africa.
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24
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Gangu KK, Maddila S, Maddila SN, Jonnalagadda SB. Efficient synthetic route for thio-triazole derivatives catalyzed by iron doped fluorapatite. RESEARCH ON CHEMICAL INTERMEDIATES 2016. [DOI: 10.1007/s11164-016-2730-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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25
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Ramesh R, Lalitha A. Facile and Green Chemistry Access to 5-aryl-1,2,4-Triazolidine-3-thiones in Aqueous Medium. ChemistrySelect 2016. [DOI: 10.1002/slct.201600348] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Rathinam Ramesh
- Department of Chemistry; Periyar University; Periyar Palkalai Nagar Salem-636 011 Tamil Nadu
| | - Appaswami Lalitha
- Department of Chemistry; Periyar University; Periyar Palkalai Nagar Salem-636 011 Tamil Nadu
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26
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Sulfamic acid as energy efficient catalyst for synthesis of flurophores, 1-H-spiro [isoindoline-1,2′-quinazoline]-3,4′(3′H)-diones. J CHEM SCI 2016. [DOI: 10.1007/s12039-016-1047-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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27
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Gangu KK, Maddila S, Maddila SN, Jonnalagadda SB. Decorated multi-walled carbon nanotubes with Sm doped fluorapatites: synthesis, characterization and catalytic activity. RSC Adv 2016. [DOI: 10.1039/c6ra08733g] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Novel and sustainable heterogeneous catalysts, namely, multi-walled carbon nanotubes (MWCNT) decorated with Sm doped fluorapatite nanocomposites (MWCNT/Sm-FAp) were prepared with different loadings of Sm (1%, 2%, 3%, 5%, and 7%).
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Affiliation(s)
- Kranthi Kumar Gangu
- School of Chemistry & Physics
- University of KwaZulu-Natal
- Durban 4000
- South Africa
| | - Suresh Maddila
- School of Chemistry & Physics
- University of KwaZulu-Natal
- Durban 4000
- South Africa
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28
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An efficient synthesis of anti-microbial 1,2,4-triazole-3-thiones promoted by acidic ionic liquid. RESEARCH ON CHEMICAL INTERMEDIATES 2015. [DOI: 10.1007/s11164-015-2267-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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29
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Ramesh R, Lalitha A. PEG-assisted two-component approach for the facile synthesis of 5-aryl-1,2,4-triazolidine-3-thiones under catalyst-free conditions. RSC Adv 2015. [DOI: 10.1039/c5ra07726e] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A straightforward and greener PEG-assisted protocol has been disclosed for the synthesis of 5-aryl-1,2,4-triazolidine-3-thiones via the reaction of aromatic aldehydes and thiosemicarbazides using very convenient neutral reaction conditions.
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