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Scavenging of the radical species formed in the sonochemical excitation of styrenes

✍ Scribed by Takashi Ando; Takahide Kimura; Mitsue Fujita; Jean-Marc Levêque; Jean-Louis Luche

Book ID
104231449
Publisher
Elsevier Science
Year
2001
Tongue
French
Weight
64 KB
Volume
42
Category
Article
ISSN
0040-4039

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✦ Synopsis

The sonochemical excitation of 4-substituted styrenes in acetic acid was studied by quenching the radical species with pyrocatechol. The rate-limiting vaporization step, evidenced by the linear free energy relationship (LFER) between the excitation and the vapor pressure of the styrenes, is a characteristic of the sonochemical reactivity in a homologous series of substrates.

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The nature of the intermediate formed in
The nature of the intermediate formed in the methoxymercuration of p-substituted styrenes
✍ Adolphus Lewis; Jerome Azoro 📂 Article 📅 1979 🏛 Elsevier Science 🌐 French ⚖ 219 KB

The logarithms of the rates of methoxymercuration of p-substituted styrenes give excellent correlations with, both, (J and 0'. Based on the values of p and p+ obtained, an unsymmetric bridged ion is proposed as the intermediate formed in these reactions. The nature of the intermediate formed during