公开(公告)号：US3712887A

公开(公告)日：1973-01-23

申请号：US3712887D

申请日：1970-10-02

Applicant: RHONE POULENC SA

Inventor： COLLEUILLE Y ,  GARDON R

IPC: C07D201/10 ,  C07D201/02 ,  C07D41/06

CPC classification number: C07D201/02

Abstract: E-CAPROLACTAM IS PREPARED FROM A CYCLOHEXANE OXIDATION PRODUCT CONTAINING CYCLOHEXYL HYDROPEROXIDE AND OXIDATION BY-PRODUCTS INCLUDING 6-HYDROPEROXY-HEXANOIC ACID, WHICH HAS BEEN OBTAINED BY LIQUID PHASE OXIDATION OF CYCLOHEXANE, WITHOUT A METAL CATALYST, USING A MOLECULAR OXYGEN CONTAINING GAS, BY WASHING THE OXIDATION PRODUCT WITH WATER, SEPARATING THE RESULTING AQUEOUS PHASE CONTAINING 6-HYDROPEROXYHEXANOIC ACID AND HEATING THE ACID UNDER PRESSURE WITH AMMONIA AND HYDROGEN IN THE PRESENCE OF A HYDROGENATION CATALYST.