CETYL TRIMETHYL AMMONIUM BROMIDE ASSISTED OXIDATION OF HYPOXANTHINE AND XANTHINE USING Mn(VII) IN AQUEOUS BRONSTED ACID MEDIA: A KINETIC AND MECHANISTIC STUDY

IF 0.5 Q4 EDUCATION & EDUCATIONAL RESEARCH Rasayan Journal of Chemistry Pub Date : 2023-01-01 DOI:10.31788/rjc.2023.1618135
A. R. Reddy, A. Reddy, M. Chary, K. Rajanna
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Abstract

Cetyl trimethyl ammonium bromide (CTAB) assisted Oxidation of hypoxanthine (HXAN), and xanthine (XAN) alkaloids by Mn(VII) occurred smoothly in presence of aqueous Bronsted acid (HClO4, H2SO4) media. The rate of oxidation of HXAN, XAN by Mn(VII) was enhanced due to an increase in [HClO4] / [H2SO4] in the presence of CTAB at a constant temperature. Reaction kinetics obeyed I-order in [Mn(VII)], [HXAN], or [XAN] at constant temperature and acid concentration in micellar (CTAB) conditions. In this present work, the acidity functions developed by Zucker-Hammett, Bunnett, and Bunnett-Olsen were used for analyzing rate enhancement, and the probable reaction mechanism that involves water moiety in the slow step has been proposed according to the criteria of Bunnett-Olsen.
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十六烷基三甲基溴化铵在水溶液中用锰(VII)辅助氧化次黄嘌呤和黄嘌呤:动力学和机理研究
十六烷基三甲基溴化铵(CTAB)在水溶液(HClO4, H2SO4)介质中对次黄嘌呤(HXAN)和黄嘌呤(XAN)生物碱进行了锰(VII)氧化。在恒定温度下,CTAB存在下,[HClO4] / [H2SO4]的浓度增加,使得Mn(VII)对HXAN, XAN的氧化速率加快。在恒定温度和酸浓度的胶束(CTAB)条件下,[Mn(VII)]、[HXAN]和[XAN]的反应动力学服从i级。本文采用Zucker-Hammett、Bunnett和Bunnett- olsen建立的酸度函数分析了反应速率的提高,并根据Bunnett- olsen标准提出了在慢步中可能涉及水部分的反应机理。
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来源期刊
Rasayan Journal of Chemistry
Rasayan Journal of Chemistry Energy-Energy (all)
CiteScore
1.90
自引率
0.00%
发文量
196
期刊介绍: RASĀYAN Journal of Chemistry [RJC] signifies a confluence of diverse streams of chemistry to stir up the cerebral powers of its contributors and readers. By introducing the journal by this name, we humbly intent to provide an open platform to all researchers, academicians and readers to showcase their ideas and research findings among the people of their own fraternity and to share their vast repository of knowledge and information. The journal seeks to embody the spirit of enquiry and innovation to augment the richness of existing chemistry literature and theories. We also aim towards making this journal an unparalleled reservoir of information and in process aspire to inculcate and expand the research aptitude.
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