Polyethylene Glycols as Efficient Catalysts for the Oxidation of Xanthine Alkaloids by Ceric Ammonium Nitrate in Acetonitrile : A Kinetic and Mechanistic Approach
Joint Authors
Shylaja, S.
Giridhar Reddy, P.
Rajendar Reddy, K.
Ramesh, K.
Rajanna, K. C.
Source
Advances in Physical Chemistry
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-06-10
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
Kinetics of oxidation of xanthine alkaloids, such as Xanthine (XAN), hypoxanthine (HXAN), caffeine (CAF), theophylline (TPL), and theobromine (TBR), have been studied with ceric ammonium nitrate (CAN) using poly ethylene glycols (PEG) as catalysts.
Reaction obeyed first order kinetics in both [CAN] and [Xanthine alkaloid].
Highly sluggish CAN-xanthine alkaloid reactions (in acetonitrile media even at elevated temperatures) are enhanced in presence PEGs (PEG-200, -300, -400, -600).
An increase in [PEG] increased the rate of oxidation linearly.
This observation coupled with a change in absorption of CAN in presence of PEG, [H–(OCH2–CH2)n–O–NH4Ce(NO3)4(CH3CN)] (PEG bound CAN species), is considered to be more reactive than CAN.
The mechanism of oxidation in PEG media has been explained by Menger-Portnoy’s enzymatic model.
American Psychological Association (APA)
Shylaja, S.& Rajanna, K. C.& Ramesh, K.& Rajendar Reddy, K.& Giridhar Reddy, P.. 2013. Polyethylene Glycols as Efficient Catalysts for the Oxidation of Xanthine Alkaloids by Ceric Ammonium Nitrate in Acetonitrile : A Kinetic and Mechanistic Approach. Advances in Physical Chemistry،Vol. 2013, no. 2013, pp.1-11.
https://search.emarefa.net/detail/BIM-501934
Modern Language Association (MLA)
Shylaja, S.…[et al.]. Polyethylene Glycols as Efficient Catalysts for the Oxidation of Xanthine Alkaloids by Ceric Ammonium Nitrate in Acetonitrile : A Kinetic and Mechanistic Approach. Advances in Physical Chemistry No. 2013 (2013), pp.1-11.
https://search.emarefa.net/detail/BIM-501934
American Medical Association (AMA)
Shylaja, S.& Rajanna, K. C.& Ramesh, K.& Rajendar Reddy, K.& Giridhar Reddy, P.. Polyethylene Glycols as Efficient Catalysts for the Oxidation of Xanthine Alkaloids by Ceric Ammonium Nitrate in Acetonitrile : A Kinetic and Mechanistic Approach. Advances in Physical Chemistry. 2013. Vol. 2013, no. 2013, pp.1-11.
https://search.emarefa.net/detail/BIM-501934
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-501934
