| 31. | On the molecular level, all auxins are compounds with an aromatic ring and a carboxylic acid group.
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| 32. | Similar to other phenols, the hydroxyl groups on the aromatic ring of a benzenediol are weakly acidic.
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| 33. | It may contain alkenes and aromatic rings, and it is compatible with ethers and even ester groups.
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| 34. | Sulfonation occurs on the side chains, not on the aromatic ring like in p-toluenesulfonic acid.
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| 35. | Polymers which possess UV-absorbing groups such as aromatic rings may also be sensitive to UV degradation.
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| 36. | :: Is there experimental evidence that the aromatic rings are pi-stacked in the bioactive conformation?
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| 37. | One explanation for the increased acidity over alcohols is resonance stabilization of the phenoxide anion by the aromatic ring.
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| 38. | Simple monocyclic aromatic rings are usually five-membered rings like pyrrole or six-membered rings like pyridine.
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| 39. | This ion is the electrophile in ipso addition to the aromatic ring forming a lactam with an enone group.
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| 40. | Upon oxidation this intermediate will spontaneously lactonize to form the aromatic ring B and lose NovH in the process.
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