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Presence of two nitrogen in the ring of imidazole makes 2 more electrons available fr the donation hence makin it more basic then pyrazole

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βˆ™ 12y ago
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βˆ™ 6mo ago

Imidazole is more basic than pyrazole because it has a lone pair of electrons on the nitrogen atom that can more easily donate to accept a proton, compared to pyrazole which has both nitrogen atoms in a conjugated system, making it less available to donate electrons. The presence of the nitrogen lone pair in imidazole makes it more nucleophilic and therefore more basic.

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Q: Why Imidazole is more basic than pyrazole?
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