Comparative study of the volumetric properties of three regioisomers of diazoted C-tetra(propyl)resorcin[4]arene in DMSO at various temperatures

Maldonado, Mauricio; Sanabria, Edilma; Velásquez-Silva, Astrid; Casas-Hinestroza, José Luis; Esteso, Miguel A.

doi:10.1016/j.molliq.2020.115252

Cited by 7 publications

(3 citation statements)

References 44 publications

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“…Calixarenes can be functionalized in the aromatic ring from the starting materials by varying the nature of the substituent group on the phenol or in the hydroxyl group, − while the reactivity of the resorcin[4]arenes is mainly located at three points: on the hydroxyl groups, at position 2 of the hydroxyl group, and by modification through the introduction of functionalized aldehyde. ,− Functionalizing substances such as diazonium salts, − methyl sulfonates, , ammonium groups, , acylation, , formylation, , and aminomethylation, among others, , can be introduced into the hydroxylated platform by means of easily accessible reactions selectively, with good yields (Figure ). …”

Section: Polyhydroxylated Platforms (Calixarenes/resorcinarenes)mentioning

confidence: 99%

Copper(I)-Catalyzed Alkyne–Azide Cycloaddition (CuAAC) “Click” Reaction: A Powerful Tool for Functionalizing Polyhydroxylated Platforms

2023

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Click chemistry is currently one of the most used tools for the generation of complex organic molecules. The advantages of using click chemistry in organic synthesis are remarkable; in many cases, the reactions occur under mild conditions and are free of solvents, with high yields and short reaction times. This makes it an extraordinarily effective and viable alternative for obtaining complex/conjugated molecules. In this review, the use of click chemistry CuAAC is especially emphasized for polyhydroxylated platforms such as resorcinarenes or calixarenes, focusing mainly on aspects of synthesis, specifically conditions, reagents, and methodologies.

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Section: Polyhydroxylated Platforms (Calixarenes/resorcinarenes)mentioning

confidence: 99%

Copper(I)-Catalyzed Alkyne–Azide Cycloaddition (CuAAC) “Click” Reaction: A Powerful Tool for Functionalizing Polyhydroxylated Platforms

2023

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“…Continuing with our research on polyhydroxylated platforms [17][18][19][20], in this article the complexing capacity of three macrocycles systems: 2-hydroxypropyl-α-cyclodextrin, 2hydroxypropyl-β-cyclodextrin and 2-hydroxypropyl-γ-cyclodextrin, with hydrocortisone (Figure 1) were evaluated. The formed complexes were analyzed by using FT-IR and 1 H-NMR spectroscopy.…”

Section: Introductionmentioning

confidence: 99%

New Contributions to the Study of the Interaction between Hydrocortisone and Hydroxypropyl-Cyclodextrins in Aqueous Solution

Maldonado,

Sanabria,

Romero

et al. 2024

Preprint

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In the present work, the interactions between hydrocortisone and cyclodextrins were investigated. The cyclodextrins selected for this study were hydroxypropyl-α-cyclodextrin, hydroxypropyl-β-cyclodextrin and hydroxypropyl-γ-cyclodextrin. The study was carried out using density measurements, 1H-NMR and FT-IR spectroscopy. Preliminary studies show that hydroxypropyl-α-cyclodextrin has a low affinity for hydrocortisone, while hydroxypropyl-β-cyclodextrin and hydroxypropyl-γ-cyclodextrin have a good affinity for hydrocortisone in both solid state and solution. The study was carried out at two temperatures: 298.15 K and 310.15 K. The results suggest that at both temperatures, the system 2-HP-β-CD + HC induces an increase in the solvent structure, with increasing the solute concentration in the solution, while on the contrary the system 2-HP-γ-CD + HC induces a decrease in the solvent structure when the concentration of the solute in the system increases.

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“…Continuing our research on the properties of calix[4]resorcinarenes [ 30 , 31 ] and the modification of polymeric surfaces [ 32 , 33 , 34 ], the present study analyzed the removal of lead(II), cadmium(II), and mercury(II) ions, using a copolymer of poly(BuMA– co –EDMA) modified with C -tetra(nonyl)calix[4]resorcinarene which was obtained via the impregnation method. Ion retention efficiency was assessed by examining the effects of time of contact, pH, and volume of sample on the effective sorption.…”

Section: Introductionmentioning

confidence: 99%

Removal of Toxic Metal Ions Using Poly(BuMA–co–EDMA) Modified with C-Tetra(nonyl)calix[4]resorcinarene

Castillo-Aguirre

Maldonado

Esteso

2022

Toxics

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A copolymer of poly(BuMA–co–EDMA) modified with C-tetra(nonyl)calix[4]resorcinarene was obtained via the impregnation method. The formation of the modified copolymer was confirmed and investigated using various techniques; in this way, the presence of calix[4]resorcinarene was confirmed by FT-IR spectroscopy and by high resolution transmission electron microscopy. The modified copolymer was used for the removal of highly toxic cations (Pb2+, Hg2+, and Cd2+) from aqueous solutions. To perform the removal, we used the batch sorption technique and the effects of time of contact, pH, and volume of sample on the effective sorption were determined. The best results were observed for Pb2+ extraction, which was comparatively more efficient. Adsorption–desorption experiments revealed that the modified copolymer could be used for several cycles without significant loss of adsorption capacity. Finally, the results showed that the modified copolymer application is highly efficient for the removal of lead ions from aqueous solutions.

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Comparative study of the volumetric properties of three regioisomers of diazoted C-tetra(propyl)resorcin[4]arene in DMSO at various temperatures

Cited by 7 publications

References 44 publications

Copper(I)-Catalyzed Alkyne–Azide Cycloaddition (CuAAC) “Click” Reaction: A Powerful Tool for Functionalizing Polyhydroxylated Platforms

Copper(I)-Catalyzed Alkyne–Azide Cycloaddition (CuAAC) “Click” Reaction: A Powerful Tool for Functionalizing Polyhydroxylated Platforms

New Contributions to the Study of the Interaction between Hydrocortisone and Hydroxypropyl-Cyclodextrins in Aqueous Solution

Removal of Toxic Metal Ions Using Poly(BuMA–co–EDMA) Modified with C-Tetra(nonyl)calix[4]resorcinarene

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