Unformatted text preview: 1,4-pentadiene (b) Which diene adds the proton faster? (c) Which one gives the more stable product? 4. Arrange the following carbocations in order of decreasing stability. Draw all the possible resonance forms for each of them. H 2 C CH 2 + H 2 C CH 2 + H 3 C CH 3 + H 2 C CH 2 + 5. Cyclooctatetraene A exists in equilibrium with less than 0.05% of a bicyclic isomer B which is trapped by Diels-Alder cycloaddition to maleic anhydride to give compound C. What is the structure of isomer B? O H H O O C B O O A O 6. On the basis of Hückel’s rule label each of the following as aromatic or antiaromatic. H H...
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- Fall '06
- GANEM, B
- Reaction, Following, Chap ter, enan tio mers, th e pair, th e diene, th e products