Question

Why sp2 carbon doesn't show tautomerism

Answer 1

Answer:

Quinone has an α-hydrogen, however, its a vinylic hydrogen(hydrogen attached to a carbon atom which is sp2 hybridized), its very difficult to abstact such a hydrogen, and hence it becomes very less acidic. Therefore, no abstraction of α-hydrogen from it, by a base, hence, it does not show tautomerism!

Explanation:

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