Selective Na+/K+Effects on the Formation of α-Cyclodextrin Complexes with Aromatic Carboxylic Acids: Competition for the Guest

2010 ◽  
Vol 114 (39) ◽  
pp. 12607-12613 ◽  
Author(s):  
Irina V. Terekhova ◽  
Anastasia O. Romanova ◽  
Roman S. Kumeev ◽  
Maxim V. Fedorov
Keyword(s):  
Carboxylic Acids ◽  
Cyclodextrin Complexes ◽  
Aromatic Carboxylic Acids

Cyclodextrin and Termethylated Cyclodextrin Complexation of Aromatic Carboxylic Acids and Their Conjugate Bases in Aqueous Solution: the Effect of Size, Hydrophobicity and Charge

1995 ◽  
Vol 48 (6) ◽  
pp. 1125 ◽  
Author(s):  
K Hendrickson ◽  
CJ Easton ◽  
SF Lincoln
Keyword(s):  
Aqueous Solution ◽  
Carboxylic Acids ◽  
Potentiometric Titration ◽  
Complexation Constants ◽  
Cyclodextrin Complexes ◽  
Aromatic Carboxylic Acids ◽  
Factors Influencing ◽  
Cyclodextrin Complexation ◽  
Binary Complexes ◽  
Conjugate Bases

For α- cyclodextrin ( αCD ), the complexation constants (K) for the formation of binary host-guest complexes ( HA.αCD ) are 750�60, 1070�60, 27�3 and 17�4 dm3 mol-1 when the guests (HA) are benzoic, 4-methylbenzoic and (R)- and (S)-2-phenylpropanoic acids, respectively, as determined by potentiometric titration in aqueous solution at 298.2 K and I = 0.10 mol dm-3 ( KCl ). For the analogous hexakis (2,3,6-tri-O-methyl)-α- cyclodextrin complexes ( HA.TMαCD ), K = 1580�150, 2890�130, 220�10 and 207�8 dm3 mol-1, and for the heptakis (2,3,6-tri-O-methyl)-β-cyclodextrin complexes ( HA.TMαCD ), K = 200�20, 340�30, 129�5 and 170�10 dm3 mol-1. The binary complexes formed by the corresponding carboxylates (A-) are much less stable. Ternary host-guest α- cyclodextrin complexes (HA.αCD2) are also formed. These data, together with literature data for β- cyclodextrin, are discussed in terms of the factors influencing complexation.

Intercalated Organo-Bentonite as Efficient Biosorbent for Aromatic Carboxylic Acids from Wastewater

2021 ◽  
pp. 116443
Author(s):  
N. Bensid ◽  
R. Zerdoum ◽  
Z. Hattab ◽  
Y. Boutaleb ◽  
M. Bououdina
Keyword(s):  
Carboxylic Acids ◽  
Aromatic Carboxylic Acids

ChemInform Abstract: “Ligand-Free” Palladium-Catalyzed Direct C-H Bond Oxidative Acyloxylation of 2-Arylpyridines with Aromatic Carboxylic Acids.

ChemInform ◽  
2012 ◽  
Vol 43 (35) ◽  
pp. no-no
Author(s):  
Chao-Jun Hu ◽  
Xiao-Hong Zhang ◽  
Qiu-Ping Ding ◽  
Ting Lv ◽  
Shao-Peng Ge ◽  
...  
Keyword(s):  
Carboxylic Acids ◽  
Aromatic Carboxylic Acids ◽  
Ligand Free ◽  
Palladium Catalyzed

scholarly journals Fluorescent Derivatization of Aromatic Carboxylic Acids with Horseradish Peroxidase in the Presence of Excess Hydrogen Peroxide

2015 ◽  
Vol 31 (1) ◽  
pp. 37-44
Author(s):  
Junichi ODO ◽  
Masahiko INOGUCHI ◽  
Hiroyuki AOKI ◽  
Yuto SOGAWA ◽  
Masahiro NISHIMURA
Keyword(s):  
Hydrogen Peroxide ◽  
Horseradish Peroxidase ◽  
Carboxylic Acids ◽  
Aromatic Carboxylic Acids ◽  
Excess Hydrogen

scholarly journals Exploring the pathways of aromatic carboxylic acids in ozone solutions

RSC Advances ◽  
2017 ◽  
Vol 7 (55) ◽  
pp. 34339-34347 ◽  
Author(s):  
Xin Zhong ◽  
Chongwei Cui ◽  
Shuili Yu
Keyword(s):  
Organic Matter ◽  
Carboxylic Acids ◽  
Natural Organic Matter ◽  
Aromatic Carboxylic Acids

The reaction between ozone and natural organic matter (NOM) generates a certain amount of aromatic carboxylic acids (ACAs).

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