The following compound, 2-hydroxycycloheptatrienone, does not give all the usual carbonyl group reactions. (i) Explain this apparent anomaly. Furthermore, explain the significant difference between the relative stability of this compound and its 3- and 4-hydroxy isomers. (ii) What would you expect to be the influence of adding (a) a nitro group as a substituent on the 7-membered ring or (b) an alkyl group, on the degree of aromaticity of the above compound. (iii) Based on your understanding of the hydrogen bonding concept, which isomer would you expect to have a higher m.p, (assuming they are both solids) between 2- and 4- hydroxycycloheptatrienone? Explain your choice.

The following compound, 2-hydroxycycloheptatrienone, does not give all the usual carbonyl group reactions. (i) Explain this apparent anomaly. Furthermore, explain the significant difference between the relative stability of this compound and its 3- and 4-hydroxy isomers. (ii) What would you expect to be the influence of adding (a) a nitro group as a substituent on the 7-membered ring or (b) an alkyl group, on the degree of aromaticity of the above compound. (iii) Based on your understanding of the hydrogen bonding concept, which isomer would you expect to have a higher m.p, (assuming they are both solids) between 2- and 4- hydroxycycloheptatrienone? Explain your choice.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Question

The following compound, 2-hydroxycycloheptatrienone, does not
give all the usual carbonyl group reactions.
(i) Explain this apparent anomaly. Furthermore, explain the
significant difference between the relative stability of this
compound and its 3- and 4-hydroxy isomers.
(ii) What would you expect to be the influence of adding (a) a nitro
group as a substituent on the 7-membered ring or (b) an alkyl
group, on the degree of aromaticity of the above compound.
(iii) Based on your understanding of the hydrogen bonding concept,
which isomer would you expect to have a higher m.p, (assuming
they are both solids) between 2- and 4-
hydroxycycloheptatrienone? Explain your choice.

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