公开(公告)号：US3758494A

公开(公告)日：1973-09-11

申请号：US3758494D

申请日：1971-12-23

Applicant: STAMICARBON

Inventor： SUVERKROPP G ,  REICHRATH W

IPC: C07C273/18 ,  C07C275/16 ,  C07D233/76 ,  C07D49/32

CPC classification number: C07D233/76 ,  C07C273/1854 ,  C07C275/16

Abstract: A PROCESS IS DISCLOSED WHEREBY 5-(4-AMIUNOBUTYL)-HYDANTOIN IS PREPARED BY THE LIQUID PHASE HYDROGENATION OF 5-(3-CYANOPROPYL)-HYDANTOIN OR A MIXTURE OF 5-(3-CYANOPROPYL)-HYDANTOIN AND 1-UREIDO-4-CYANOVALERAMIDE, IN THE PRESENCE OF AN INERT SOLVENT SUSPENSION OF A HYDROGENATION CATALYST.