نتایج جستجو برای: β cyclodextrin sulfuric acid

تعداد نتایج: 911766  

Journal: :caspian journal of chemistry 0
heshmatollah alinezhad faculty of chemistry, mazandaran university, babolsar, iran asefeh hagh haghighi faculty of chemistry, mazandaran university, babolsar, iran

β-cyclodextrin sulfuric acid as a green lewis acid catalyst has been applied for the preparation of bis(indolyl)methanes, tris(indolyl)methanes and 3,3'-diindolyloxindole derivatives by the condensation of indoles with various carbonyl compounds in aqueous media with high to excellent yields.

Asefeh Hagh Haghighi Heshmatollah Alinezhad

β-Cyclodextrin sulfuric acid as a green Lewis acid catalyst has been applied for the preparation of bis(indolyl)methanes, tris(indolyl)methanes and 3,3'-diindolyloxindole derivatives by the condensation of indoles with various carbonyl compounds in aqueous media with high to excellent yields.

Journal: :علوم و تکنولوژی پلیمر 0
مجید منتظر محمدمهدی جولایی

modifying polyester spacer fabric by β-cyclodextrin produces a new product with outstanding characteristics. citric acid is used as a crosslinking agent for improvement of durability of this material in textile fabrics. in this research different concentrations of citric acid and β-cyclodextrin were applied on a 3d fabric and some properties including weight change, weight of moisture residue, ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی خواجه نصیرالدین طوسی - دانشکده علوم 1391

abstract in the present research solution of chalcopyrite in sulfuric acid in hydrometallurgy method using electrochemistry with cyclic voltammetry technique has been investigated. the value of maximum reduction peak current of copper ions represents the measure of solubility. in this research different parameters temperature, potential, potential exert time, chalcopyrite concentration, sulfur...

Journal: :Applied Organometallic Chemistry 2021

Sonochemical procedure was used to synthesize Co/β-cyclodextrin complex. For the first time, Fe/β-cyclodextrin complex also synthesized in alkaline media. Moreover, β-cyclodextrin modified by citric acid (CA) and reacted with metal salts under ultrasonic irradiation. The prepared catalysts were characterized using EDX, UV–vis FTIR analytical techniques. highest incorporation of into observed cr...

2015
Jia Yu Xinlei Liang Zhaokun Wang Xin Guo Tiemin Sun Xingjie Guo

A method for the separation of folinic acid diastereomers by capillary electrophoresis in chiral separation media was developed. Aiming to achieve a good separation of the anionic analytes, a newly synthesized cationic β-cyclodextrin derivative, mono-6-deoxy-6-piperdine-β-cyclodextrin, was applied as the chiral selector. The effect of background electrolyte pH, the concentration of the cyclodex...

Journal: :Therapeutic delivery 2014
Eva Pinho Mariana Henriques Graça Soares

AIM Caffeic acid has been described as active against bacteria commonly isolated from wound infections. However, its low stability and poor solubility reduce caffeic acid applicability as a pharmaceutical product. These parameters can be enhanced by complexation with cyclodextrin. The main goal of the present work was to incorporate caffeic acid on cyclodextrin-based hydrogels capable of contro...

Journal: :Journal of Inclusion Phenomena and Macrocyclic Chemistry 2021

A simple and cost-effective method for the synthesis of sulfated β-cyclodextrin, one most widely used chiral mobile phase additives, using sulfamic acid as a sulfonating agent has been described. The was optimized, synthesized product characterized by spectroscopic, size-exclusion chromatographic, thermal, microscopic methods compared to marketed Sigma Aldrich β-cyclodextrin. β-Cyclodextrin, hy...

Ali.R Kiasat Mina Cheraghchi, Rashid Badri

A new and efficient synthesis of benzoxanthene drivatives from the three-component condensation reaction ofaryl aldehydes and β-naphthol under solvent-free conditions in the presence of β-cyclodextrin sulfonic acid, as an efficient heterogeneous solid acid catalyst with excellent yields and short reaction time is presented

Journal: :international journal of bio-inorganic hybrid nanomaterials 0

the purpose of this study was to produce oil in water nano-emulsion by ultrasonication, and investigate the influence of inulin and β-cyclodextrin on the prosperities of nano-emulsion and morphology of spray dried microcapsules. the results showed that emulsion droplet size in samples containing β-cyclodextrin (8.28±0.11 nm) was less than inulin samples (97.12±4.2 nm). considering sem photos, β...

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