公开(公告)号：AU5098273A

公开(公告)日：1974-07-11

申请号：AU5098273

申请日：1973-01-11

Applicant: SNIA VISCOSA

Inventor： GUIFFRE LUIGI ,  SIOLO GIANCARLO ,  MATTONE ROBERTO

IPC: C07D201/02 ,  C07C67/00 ,  C07C201/00 ,  C07C207/00 ,  C07C239/00 ,  C07C251/46 ,  C07D201/04 ,  C07D201/10 ,  C07D205/08 ,  C07D207/263 ,  C07D223/02 ,  C07C131/04 ,  C07D41/06

Abstract: A method for the preparation of omega lactams is disclosed, more particularly epsilon caprolactam or a precursor thereof (such as cyclohexanone oxime), using as the starting material a cyclomethylene ketene, with the simultaneous formation of side products such as cyclohexanecarboxylic acid, wherein an adduct is preliminarly formed between cyclomethylene ketene and sulphur dioxide. The adduct is then reacted with a nitrosating agent so as to obtain, under the appropriate reaction conditions, the expected lactam, more specifically epsilon caprolactam.

公开(公告)号：DE2065766A1

公开(公告)日：1976-04-22

申请号：DE2065766

申请日：1970-07-03

Applicant: SNIA VISCOSA

Inventor： GUIFFRE LUIGI ,  SIOLI GIANCARLO

IPC: C07C251/46 ,  C07C67/00 ,  C07C239/00 ,  C07D201/10 ,  C07D223/10 ,  C07D225/02