Calixarenes in Organo and Biomimetic Catalysis

Sayın, Serkan

doi:10.1007/978-3-319-31867-7_27

Cited by 21 publications

(12 citation statements)

References 54 publications

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“…Kromat ekstraksiyon çalışması için ise, 1 x 10 -4 M dikromat çözeltisi, CH2Cl2 içinde 10 mL 1 x 10 −3 M kaliksaren türevi ile karıştırılarak ağzı kapalı bir erlen içerisine alındı. Hazırlanan karışımlar mekanik sallayıcıda 3 [17]. Düşük pH'lı çözeltide dikromat iyonu protonlanmış HCr2O7 -şeklinde bulunmaktadır.…”

Section: Sıvı-sıvı Ekstraksiyonunclassified

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Bazı Kaliks[4, 8]aren Türevlerinin Metal ve Kromat İyon Taşıma Özelliklerinin İncelenmesi

Güngör

2019

Süleyman Demirel Üniversitesi Fen Bilimleri Enstitüsü Dergisi

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Bu çalışmada 4-nitrobenziloksi, 4-aminobenziloksi ve 3-aminopropiloksi grupları taşıyan kaliks[4]aren ve kaliks[8]aren bileşikleri literatür metotlara göre sentezlenmiştir. Bu bileşiklerin iyon taşıma özelliklerini görmek için sıvı-sıvı ekstraksiyon çalışmaları metal katyonları (K + , Na + , Cs + , Co 2+ , Cd 2+ , Ni 2+ , Cu 2+ , Hg 2+ , ve Pb 2+) ve kromat iyonu ile yapılmıştır. Ekstraksiyon çalışmaları, amin grubu içeren kaliksarenlerin, nitro grubu taşıyan kaliksarenlere göre metallerle daha yüksek etkileşim yapmalarından dolayı sulu fazdan organik faza taşımasının daha fazla olduğunu göstermiştir. Ayrıca 1 ve 3 bileşiklerin Na2Cr2O7'i düşük pH'larda büyük oranda sulu fazdan organik faza taşıdığı gözlenmiştir.

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Section: Sıvı-sıvı Ekstraksiyonunclassified

“…Bu sonuç literatürle uyumludur [6]. [17]. Düşük pH'lı çözeltide dikromat iyonu protonlanmış HCr2O7 -şeklinde bulunmaktadır.…”

Section: Bulgularunclassified

Bazı Kaliks[4, 8]aren Türevlerinin Metal ve Kromat İyon Taşıma Özelliklerinin İncelenmesi

Güngör

2019

Süleyman Demirel Üniversitesi Fen Bilimleri Enstitüsü Dergisi

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“…Calixarenes show a central hydrophobic cavity of controllable size, in addition to a wide upper rim and a narrow lower rim. The synthetic and structural versatility of these macrocycles make them suitable for different applications, (Böhmer, 1995 ; Gaeta et al, 2002 ; De Rosa et al, 2015 ; Neri et al, 2016 ; Talotta et al, 2017 ) including molecular recognition and sensing (Guo et al, 2011 , 2012 , 2013 ; Gaeta et al, 2012 ; Guo and Liu, 2014 ; Sun et al, 2016 ; Talotta et al, 2016 ; Yeon et al, 2016 ; Zheng et al, 2018 ), self-assembly processes (Rebek, 2000 ; Rudkevic, 2001 ; Díaz- Moscoso et al, 2016 ), synthesis of interpenetrated architectures (Gaeta et al, 2013 , 2016 ; Arduini et al, 2016 ; De Rosa et al, 2017c ; La Manna et al, 2017 ; Talotta et al, 2018 ), and catalysis (Cacciapaglia and Mandolini, 2000 ; Li et al, 2011 ; Deraedt and Astruc, 2016 ; Stoikov et al, 2016 ; Yilmaz and Sayin, 2016 ).…”

Section: Reaction Organocatalyzed By Cavity-containing Macrocyclic Scmentioning

confidence: 99%

Supramolecular Organocatalysis in Water Mediated by Macrocyclic Compounds

et al. 2018

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In the last decades many efforts have been devoted to design supramolecular organocatalysts able to work in water as the reaction medium. The use of water as solvent provides promising benefits with respect to environmental impact. In this context, macrocyclic compounds played a role of primary importance thanks to their ease of synthesis and their molecular recognition abilities toward the reactants. The aim of this review is to give an overview of the recent advances in the field of supramolecular organocatalysis in water, focusing the attention on calixarene and cyclodextrins derivatives. Calixarenes and cyclodextrins, thanks to their hydrophobic cavities, are able to host selectively the substrates isolating they from the reaction environment. In addition, the synthetic versatilities of these macrocycles permits to introduce useful functional groups in close proximity of the hydrophobic binding sites. Regarding the cyclodextrins (CDs), we have here reviewed the their most recent uses as organocatalysts for the synthesis of heterocyclic compounds, in multi-component reactions and in carbon-carbon bond forming reactions. Examples have been reported in which CD catalysts are able to drive the regiochemistry of common organic reactions. In addition, cyclodextrins bearing catalytically active chiral groups, have shown excellent enantioselectivity in the catalysis of organic reactions. Recently reported results have shown that calixarene derivatives are able to accelerate organic reaction under “on-water” conditions with a significant selectivity toward the reactants. Under “on-water conditions” the hydrophobic effect, induced by insoluble calixarene derivatives, forces the reactants and the catalyst to aggregate and thus accelerating the reaction between them thanks to an amplification of weak secondary interactions. Regarding the use of water-soluble calixarene organocatalysts, we have here reviewed their role in the acceleration of common organic reactions.

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“…During the past thirty years, calixarenes have been successfully merged into different fields because of their remarkable architectural distinctiveness. Sufficient literature has been published by researchers in which various applications of calixarenes have been explored like in catalysis, sensor technology, HPLC as the stationary phase, membrane technology, enzyme mimetic, chiral separation, nonlinear optics, and ion selective study and also as antimicrobial agents [1][2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Antimicrobial Assessment of Fe³⁺ Inclusion Complex of p-tert-Butylcalix[4]arene Diamide Derivative

Chandio

Memon

et al. 2019

Journal of Chemistry

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Present study deals with the synthesis of the p-tert-butylcalix[4]arene diamide derivative as ligand (L) and its Fe3+ complex, followed by its characterization using TLC and FT-IR, while UV-Vis and Job’s plot study were performed for complex formation. Antimicrobial activity of the derivative (L) and its metal complex was carried out by the disc diffusion method against bacteria (Escherichia coli and Staphylococcus albus) and fungi (R. stolonifer). Different concentrations of the derivative (L) (6, 3, 1.5, 0.75, and 0.37 μg/mL) and its Fe3+ complex were prepared, and Mueller–Hinton agar was used as the medium for the growth of microorganisms. Six successive dilutions of the derivative (L) and Fe3+ complex were used against microorganisms. Two successive dilutions (6 and 3 μg/mL) of the derivative (L) showed antibacterial action against both Gram-positive and Gram-negative bacteria. In addition, three successive dilutions (6, 3, and 1.5 μg/mL) of the derivative (L) showed antifungal activity. However, all of six dilutions of the Fe3+ complex showed antimicrobial activity. Derivative (L) showed 3 and 1.5 μg/mL minimum inhibitory concentrations (MIC) against bacteria and fungi, respectively. On the contrary, its Fe3+ complex showed 0.37 μg/mL value of MIC against bacteria and fungi. Hence, Fe3+ complex of the derivative (L) was found to be a more effective antimicrobial agent against selected bacteria and fungi than the diamide derivative (L).

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Calixarenes in Organo and Biomimetic Catalysis

Cited by 21 publications

References 54 publications

Bazı Kaliks[4, 8]aren Türevlerinin Metal ve Kromat İyon Taşıma Özelliklerinin İncelenmesi

Bazı Kaliks[4, 8]aren Türevlerinin Metal ve Kromat İyon Taşıma Özelliklerinin İncelenmesi

Supramolecular Organocatalysis in Water Mediated by Macrocyclic Compounds

Synthesis and Antimicrobial Assessment of Fe³⁺ Inclusion Complex of p-tert-Butylcalix[4]arene Diamide Derivative

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Calixarenes in Organo and Biomimetic Catalysis

Cited by 21 publications

References 54 publications

Bazı Kaliks[4, 8]aren Türevlerinin Metal ve Kromat İyon Taşıma Özelliklerinin İncelenmesi

Bazı Kaliks[4, 8]aren Türevlerinin Metal ve Kromat İyon Taşıma Özelliklerinin İncelenmesi

Supramolecular Organocatalysis in Water Mediated by Macrocyclic Compounds

Synthesis and Antimicrobial Assessment of Fe3+ Inclusion Complex of p-tert-Butylcalix[4]arene Diamide Derivative

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Product

Resources

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Synthesis and Antimicrobial Assessment of Fe³⁺ Inclusion Complex of p-tert-Butylcalix[4]arene Diamide Derivative