公开(公告)号：DE1256647B

公开(公告)日：1967-12-21

申请号：DES0092156

申请日：1964-07-21

Applicant: EDISON SOC

Inventor： RIBALDONE GIUSEPPE ,  VARESE GALLARATE ,  NENZ ADRIANO ,  BRICHTA CORRADO

IPC: C07D201/10

Abstract: Lactams are prepared by the reaction of a cycloalkanecarboxylic acid or an alkyl derivative thereof with nitrosyl hydrogen pyrosulphate. The reaction may be carried out in an inert solvent, e.g. in aliphatic, cycloaliphatic, chlorinated aliphatic hydrocarbon or nitroparaffin. The acid may be one having 4-12 carbon atoms in the ring. Examples are given for the preparation of caprolactam, capryllactam, valerolactam and lauryllactam. The process is operated at a temperature between 30 DEG and 150 DEG C. The lactam is separated by extracting the unreacted acid from the mixture by solvent extraction; neutralizing the remaining aqueous solution with an alkaline material, and extracting the lactam with a solvent, e.g. benzene, chloroform or methylene dichloride.

公开(公告)号：CA740482A

公开(公告)日：1966-08-09

申请号：CA740482D

Applicant: EDISON SOC

Inventor： NENZ ADRIANO ,  RIBALDONE GIUSEPPE ,  BRICHTA CORRADO

公开(公告)号：AT247864B

公开(公告)日：1966-06-27

申请号：AT298864

申请日：1964-04-06

Applicant: EDISON SOC

Inventor： BRICHTA CORRADO ,  RIBALDONE GIUSEPPE ,  NENZ ADRIANO

IPC: C07C20060101

公开(公告)号：DE1210423B

公开(公告)日：1966-02-10

申请号：DES0091662

申请日：1964-06-24

Applicant: EDISON SOC

Inventor： RIBALDONE GIUSEPPE ,  SMAI FRANCO ,  GARBUGLIO CARMINE

IPC: C01B21/086

公开(公告)号：CA725686A

公开(公告)日：1966-01-11

申请号：CA725686D

Applicant: EDISON SOC

Inventor： BORSOTTI GIAMPIERO ,  NENZ ADRIANO ,  RIBALDONE GIUSEPPE ,  BRICHTA CORRADO

公开(公告)号：AT252271B

公开(公告)日：1967-02-10

申请号：AT583464

申请日：1964-07-07

Applicant: EDISON SOC

Inventor： RIBALDONE GIUSEPPE ,  SMAI FRANCO ,  GARBUGLIO CARMINE

IPC: C01B21/086

公开(公告)号：CA739024A

公开(公告)日：1966-07-19

申请号：CA739024D

Applicant: EDISON SOC

Inventor： BRICHTA CORRADO ,  NENZ ADRIANO ,  RIBALDONE GIUSEPPE

公开(公告)号：AT247846B

公开(公告)日：1966-06-27

申请号：AT68364

申请日：1964-01-28

Applicant: EDISON SOC

Inventor： RIBALDONE GIUSEPPE ,  BRICHTA CORRADO ,  NENZ ADRIANO ,  BORSOTTI GIAMPIERO

IPC: C07C20060101

公开(公告)号：CA721673A

公开(公告)日：1965-11-16

申请号：CA721673D

Applicant: EDISON SOC

Inventor： GARBUGLIO CARMINE ,  RIBALDONE GIUSEPPE