吡唑啉酮或吡唑酮是環戊二烯兩個相鄰碳原子被氮取代的酮類衍生物，其母體有3H-吡唑-3-酮和4H-吡唑-4-酮兩種。它們可由肼和β-羰基化合物反應製得。[1]
吡唑啉酮母體的兩種異構體：（左）3H-吡唑-3-酮；（右）4H-吡唑-4-酮
參考文獻
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