The reaction given in Fig. P18.74 occurs readily at 95C (X = halogen). The relative rates of

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The reaction given in Fig. P18.74 occurs readily at 95°C (X = halogen). The relative rates of the reaction for the various halogens are 290 (X = F), 1.4 (X = Cl), and 1.0 (X = Br). When a nitro group is in the para position of each benzene ring, the reaction is substantially accelerated. Give a detailed mechanism for this reaction, and explain how it is consistent with the experimental facts.Ph X X Ph H C=C + Eto- Figure P18.74 heat EtOH Ph Ph C=C OEt H + X-

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Organic Chemistry

ISBN: 9781936221349

6th Edition

Authors: Marc Loudon, Jim Parise

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