ChemInform Abstract: Calixarenes. Part 18. Synthesis Procedures for p‐tert‐Butylcalix[4]arene.

Gutsche, C. David; Iqbal, Muzaffar; Stewart, D.

doi:10.1002/chin.198637171

Cited by 10 publications

(11 citation statements)

References 1 publication

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“…Synthesis of calix [4]arene (1) and its derivatives (2 and 3) were carried out according to the previously published literature (42)(43)(44), while resin 4 employed in this work ( Figure 1) has been synthesized as follows:…”

Section: Synthesismentioning

confidence: 99%

Arsenate and Dichromate Removal Efficiency of a New Calix[4]arene Impregnated Resin

Memon

Bhatti

2014

Polycyclic Aromatic Compounds

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This article highlights a newly synthesized 5,11,17,23-tetra-tert.butyl-25,26,27,28-tetrakis(hydrazidecarbonylmethoxy)-calix[4]arene (3) impregnated resin 4 and it's sorption ability for the removal of selected oxoanions, i.e., (arsenate and dichromate) from aqueous environment. Resin 4 was characterized by using FT-IR spectroscopy, scanning electron microscope (SEM), elemental, and thermogravimetic (TGA) analyses techniques. Sorption study was carried out through static and dynamic methods with continuous flow operation to evaluate the potency of resin 4 under various conditions. Several parameters, such as effect of sorbent dosage, contact time, pH, and initial concentration were optimized through batch experiments. Results justify that % sorption of these oxoanions is highly dependent on pH of the solution. Equilibrium was achieved in 45 min, while sorption efficiency of resin 4 can be better explained by Langmuir and Temkin isotherm models. Furthermore, kinetically both oxoanions follow pseudo second order model. Additionally, sorption of arsenate more appropriately could be explained by Moris-Weber diffusion kinetic model. For the dynamic method, Thomas model was used to calculate the kinetic coefficient (k TH ) and maximum sorption capacity (q o ) of resin 4 which are 3.84 and 5.94 ml mg −1 min −1 and 0.185, 0.160 mg g −1 for As (V) and Cr (VI) respectively. Furthermore, resin 4 has been found as potential sorbent for removal of these oxoanions from contaminated surface water samples.

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Section: Synthesismentioning

confidence: 99%

Arsenate and Dichromate Removal Efficiency of a New Calix[4]arene Impregnated Resin

Memon

Bhatti

2014

Polycyclic Aromatic Compounds

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“…Starting materials, p-tert-butylcalix [4]arene [11], calix [4] arene [11], 2a [12], and 3a [12], were prepared according to the literature. 1 H NMR and 13 C NMR spectra were measured on a Bruker AV 400 spectrometer at 298 K in CDCl 3 .…”

Section: Methodsmentioning

confidence: 99%

Sensitive fluorescence probes for dihydrogen phosphonate anion based on calix[4]arene bearing naphthol-hydrazone groups

Chen

Liu²,

Huang

et al. 2010

Sci. China Chem.

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t-Butyl and t-pentylcalix [4]arenes bearing two 2-naphthol-1-hydrazone groups at the lower rim were synthesized, and showed excited-state intermolecular proton transfer fluorescent signal with basic anion. They are more sensitive to dihydrogen phosphate anion than to fluoride anion, although the latter has stronger basicity. Compared with t-butylcalix[4]arene bearing two 2-naphthol-1-hydrazone groups, t-pentylcalix[4]arenes derivative has a larger fluorescent difference between dihydrogen phosphate and fluoride anion. This finding may be used to analyze dihydrogen phosphate anion in the presence of fluoride anion and provide a new approach for designing fluorescence probes that are highly selective for H 2 PO 4  .calixarene, probe for anions, fluorescence, dihydrogen phosphate anion, excited-state proton transfer

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“…(1), its debutylated derivative calix [4]arene (2) and 5, 11, 17, 23-tetrakis (N-pyrrolidinomethyl)-25, 26, 27, 28-tetrahydroxycalix [4]arene (3) were prepared by earlier published procedures (49)(50)(51). All these compounds were characterized by various analytical techniques such as melting point, TLC, FT-IR, and elemental analysis which confirm the structure and purity of compounds.…”

Section: Synthesis Of (3)mentioning

confidence: 99%

Cu²⁺Selective Chromogenic Behavior of Calix[4]arene Derivative

Memon

Bhatti

Ocak

et al. 2015

Polycyclic Aromatic Compounds

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This study involves the copper selective chromogenic response of 5,11,17,26,27,arene based mannich base (3). Complexation ability of (3) was explored by examining the effect of a series of various metal ions, such as Li + , Na + , K + , Ag + , Ba 2+ , Ca 2+ , Mn 2+ , Mg 2+ , Sr 2+ , Ni 2+ , Cd 2+ , Co 2+ , Cu 2+ , Hg 2+ , Pb 2+ , Zn 2+ , Fe 2+ , Fe 3+ , and Al 3+ , by using UV-visible spectroscopy. Ligand (3) exhibited pronounced selectivity toward Cu 2+ even in the presence of various co-existing ions. The stoichiometric analysis, i.e., Job's plot revealed that (3) form 1:1 complex with Cu 2+ ion in DMF-H 2 O system. The complexation phenomenon was confirmed by FT-IR spectroscopy that favors the selective nature of (3) with Cu 2+ .

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ChemInform Abstract: Calixarenes. Part 18. Synthesis Procedures for p‐tert‐Butylcalix[4]arene.

Cited by 10 publications

References 1 publication

Arsenate and Dichromate Removal Efficiency of a New Calix[4]arene Impregnated Resin

Arsenate and Dichromate Removal Efficiency of a New Calix[4]arene Impregnated Resin

Sensitive fluorescence probes for dihydrogen phosphonate anion based on calix[4]arene bearing naphthol-hydrazone groups

Cu²⁺Selective Chromogenic Behavior of Calix[4]arene Derivative

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ChemInform Abstract: Calixarenes. Part 18. Synthesis Procedures for p‐tert‐Butylcalix[4]arene.

Cited by 10 publications

References 1 publication

Arsenate and Dichromate Removal Efficiency of a New Calix[4]arene Impregnated Resin

Arsenate and Dichromate Removal Efficiency of a New Calix[4]arene Impregnated Resin

Sensitive fluorescence probes for dihydrogen phosphonate anion based on calix[4]arene bearing naphthol-hydrazone groups

Cu2+Selective Chromogenic Behavior of Calix[4]arene Derivative

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Cu²⁺Selective Chromogenic Behavior of Calix[4]arene Derivative