Problem 16, Chemistry 0244, 2010 Pyridine and imidazole are modest Brønsted bases at nitrogen, whereas pyrrole is not. N N H N N H pyridine pyrrole imidazole C 2 In fact, pyrrole is protonated only in strong acid, and protonation occurs at C2, not on nitrogen. First, explain why pyridine and imidazole are basic and pyrrole is not. Which N of
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