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在ＤＭＦ和ＨＡｃ的混合溶剂中，氯化铵三氧化铬可将１４种苄醚较高产率地选择性氧化为相应的苯甲酸酯，反应条件温和，产物易分离，原料可回收。
In the mixed solvent of DMF and HAc, ammonium chloride and chromium trioxide could selectively oxidize 14 kinds of benzyl ethers to the corresponding benzoates in high yields. The reaction conditions were mild and the products were easily separated and the raw materials could be recovered.