Oxidative kinetics and structure reactivity correlation in bromate oxidation of acetophenones in acid medium
IR@NISCAIR: CSIR-NISCAIR, New Delhi - ONLINE PERIODICALS REPOSITORY (NOPR)
View Archive Info| Field | Value | |
| Title |
Oxidative kinetics and structure reactivity correlation in bromate oxidation of acetophenones in acid medium
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| Creator |
Murthy, N Krishna
Reddy, Ch Sanjeeva Sundaram, E V |
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| Description |
899-902
Kinetics of acid bromate oxidation of acetophenone and eight <em>para- </em> and <em>meta</em>-substituted acetophenones have been studied in acetic acid (40-90%). The reaction is first order each in [oxidant] and [substrate] and the rate increases with aciditity of the medium. A decrease in the proportion of acetic acid in the reaction mixture decreases the rate. The effect of substituent on the rate has been evaluated and the rate constants correlated well with σ<sup>+</sup>, the Okamato-Br-own's constant, suggesting a cross-conjugation and/or a resonance interaction between the substituent and the reaction centre. The reaction is susceptible to polar influences and the reaction constant (ρ) evaluated at various temperatures and solvent compositions is ~0.8 ± 0.02 indicating an electron-deficient transition state. The Yukawa's enhanced resonance parameter (γ) is calculated to ~0.82 and discussed. |
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| Date |
2018-03-26T04:52:00Z
2018-03-26T04:52:00Z 1993-10 |
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| Type |
Article
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| Identifier |
0975-0975(Online); 0376-4710(Print)
http://nopr.niscair.res.in/handle/123456789/44028 |
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| Language |
en_US
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| Rights |
<img src='http://nopr.niscair.res.in/image/cc-license-sml.png'> <a href='http://creativecommons.org/licenses/by-nc-nd/2.5/in' target='_blank'>CC Attribution-Noncommercial-No Derivative Works 2.5 India</a>
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| Publisher |
NISCAIR-CSIR, India
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| Source |
IJC-A Vol.32A(10) [October 1993]
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