Kinetics of the Reactions of Nitro-Activated Diphenyl Ethers with Substituted Anilines in Benzene.

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dc.contributor.authorEzeani, E. C.
dc.date.accessioned2018-09-14T14:38:45Z
dc.date.available2018-09-14T14:38:45Z
dc.date.issued1983-11
dc.descriptionFull Text Attacheden_US
dc.description.abstractThe kinetics and mechanisms of the reactions of nitro-activated diphenul ethers with substituted anilines in benzene have been investigated. The reactions except that of 2, 6-dinitro phenyl 2,4,6-trinitrophenyl ether are base catalysed. For some of the nucleophiles, the rates decreased with increasing temperature in the range 5 - 350C resulting in negative enthalpies of activation (~HN-4.1 to 20.0 kJmol-1). This can be rationalised in terms of a step-wise mechanism involving (at least) a pre-equilibrium. The catalysis of the mono-nitro substituted diphenyl ethers involves two aniline molecules and proceeds by temperature - independent rates while that of the dinitro substituted ones involve one aniline molecules and proceeds by temperature-dependent rates in the above temperature range. The results are interpreted in terms of a cyclic mechanism assisted in special cases by steric factors.en_US
dc.description.sponsorshipUniversity of Lagosen_US
dc.identifier.citationEzeani, E. C. (1983), Kinetics of the Reactions of Nitro-Activated Diphenyl Ethers with Substituted Anilines in Benzene. University of Lagos School of Postgraduate Studies Phd Thesis and Dissertation Abstractsen_US
dc.identifier.urihttp://ir.unilag.edu.ng:8080/xmlui/handle/123456789/3061
dc.language.isoenen_US
dc.publisherUniversity of Lagosen_US
dc.relation.ispartofseriesThesis and Dissertations;UL-257-CHM-83;
dc.subjectNitro-activated diphenyl ethersen_US
dc.subjectAnilinesen_US
dc.titleKinetics of the Reactions of Nitro-Activated Diphenyl Ethers with Substituted Anilines in Benzene.en_US
dc.typeThesisen_US
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