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US5808114A Preparation of epoxides by means of aromatic peroxycarboxylic acids 失效
通过芳族过氧羧酸制备环氧化物

Preparation of epoxides by means of aromatic peroxycarboxylic acids
摘要:
Preparation of epoxides from olefins by means of aromatic peroxycarboxylic acids comprises a step A of epoxidizing the olefin and removing the resulting aromatic carboxylic acid from the epoxide, a step B of catalytically hydrogenating the removed aromatic carboxylic acid to the corresponding aromatic aldehyde, and a step C of oxidizing this aldehyde with oxygen or an oxygen-containing gas mixture back to the aromatic peroxycarboxylic acid for re-use for epoxidizing an olefin.
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