Preparation process for n,n'-carbonylbis-lactams

C - Chemistry – Metallurgy – 07 – D

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C07D 201/02 (2006.01) C07D 223/10 (2006.01) C07D 227/087 (2006.01)

Patent

CA 2345846

L'invention concerne un procédé de préparation des N,N'-carbonylbislactames par réaction du phosgène avec au moins un lactame qui est caractérisé en ce que l'amine tertiaire est choisie dans le groupe constitué par les amines tertiaires aliphatiques non nucléophiles. On obtient ainsi des N,N'-carbonylbislactames de pureté élevée et avec de bons rendements aussi bien au laboratoire qu'à l'échelon industriel.

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