铬酸酯(英语:Chromate ester)是铬酸形成的酯,包含R-O-CrO2-O-R基团,结构和其它酯类官能团相似。它们可以由三氧化铬(CrO3)和含水铬酸根离子等六价铬化合物合成,容易被还原成铬(IV)。
铬酸酯是琼斯氧化反应的主要反应中间体。含有烯丙基的铬酸酯可透过[3,3]-σ迁移反应重排,得到烯酮产物。[1]可分离的铬酸酯的例子有铬酸叔丁酯((CH3)3CO)2CrO2)。[2]
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