Process for producing epoxides using aromatic...

Details Process for producing epoxides using aromatic... Process for producing epoxides using aromatic...

C - Chemistry, Metallurgy

07

D

C07D 301/14 (2006.01) C07C 45/41 (2006.01) C07D 303/04 (2006.01)

Patent

CA 2210696

The invention concerns the production of epoxides from olefins using aromatic peroxycarboxylic acids. Following epoxidisation (step A), the aromatic carboxylic acids thereby produced are separated from the epoxides and catalytically hydrated (step B) to form the corresponding aromatic aldehydes which are then oxidised (step C) with oxygen or with an oxygen-containing gas mixture to form again the aromatic peroxycarboxylic acids which can be used again to produce the epoxides.

Procédé de fabrication d'époxydes à partir d'oléfines, au moyen d'acides peroxycarboxyliques aromatiques, selon lequel, après l'époxydation (étape A), on sépare des époxydes les acides carboxyliques aromatiques formés, on effectue (étape B) l'hydrogénation catalytique en aldéhydes aromatiques correspondants, et l'on oxyde (étape C) ces aldéhydes, avec de l'oxygène ou avec un mélange gazeux renfermant de l'oxygène, pour obtenir de nouveau des acides peroxycarboxyliques aromatiques, lesquels sont utilisés de nouveau pour la production d'époxydes.

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