Lactam preparation method using corresponding cycloalcanon...

C - Chemistry – Metallurgy – 07 – D

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C07D 225/02 (2006.01) C07D 201/04 (2006.01) C07D 223/10 (2006.01)

Patent

CA 2282877

L'invention concerne un procédé de préparation de lactames contenant 6 à 12 atomes de carbone à partir des oximes de cycloalcanone correspondantes par transposition de Beckmann en présence d'acide. Le procédé selon l'invention est caractérisé en ce que l'acide utilisé est l'acide méthanesulfonique. L'utilisation d'un tel acide permet de pallier aux inconvénients reliés à l'utilisation conventionnelle de l'acide sulfurique pour effectuer la transposition de Beckmann.

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