公开(公告)号：DE2743095A1

公开(公告)日：1978-03-30

申请号：DE2743095

申请日：1977-09-24

Applicant: MONTEDISON SPA

Inventor： RIBALDONE GIUSEPPE ,  GRECU RENATO ,  PAFFONI CAMILLO ,  SIRONI GIUSEPPE

IPC: C09B1/44 ,  C09B1/516 ,  C09B1/54 ,  D06P1/24 ,  C09B1/26

Abstract: The present invention relates to a new class of compounds belonging to the anthraquinone series, having the general formula: (I) wherein R, R', R'', R''', R' are indifferently H or Chlorine,

公开(公告)号：FR2344553A1

公开(公告)日：1977-10-14

申请号：FR7707633

申请日：1977-03-15

Applicant: MONTEDISON SPA

Inventor： RIBALDONE GIUSEPPE ,  GRECU RENATO

IPC: C07D285/10

公开(公告)号：AU7249274A

公开(公告)日：1976-02-19

申请号：AU7249274

申请日：1974-08-19

Applicant: MONTEDISON SPA

Inventor： RIBALDONE GIUSEPPE

IPC: C07D221/18 ,  C09B5/14 ,  C07D39/00

Abstract: A new process for preparing 3,3 - thio - bis[2-Methoxy-1-azabenzanthrone], a useful intermediate in the synthesis of dyestuffs, is disclosed. The process involves reacting 2-methoxy-1-azabenzanthrone with sulfur chlorides in suspension or solution in an inert solvent under heating, and recovering the reaction product from the reaction mass, e.g., by filtering.

公开(公告)号：AU7124174A

公开(公告)日：1976-01-15

申请号：AU7124174

申请日：1974-07-15

Applicant: MONTEDISON SPA ,  AZIENDE COLORI NAZIONZLI AFFIN

Inventor： BORSOTTI GIAMPIERO ,  GONZATI FRANCO ,  RIBALDONE GIUSEPPE

IPC: C09B5/14 ,  C07D221/18 ,  C09B27/00 ,  C07D39/00

公开(公告)号：CA977340A

公开(公告)日：1975-11-04

申请号：CA170724

申请日：1973-05-08

Applicant: MONTEDISON SPA

Inventor： RIBALDONE GIUSEPPE ,  BORSOTTI GIAMPIETRO

IPC: C07C69/95 ,  C07C51/00 ,  C07C66/02 ,  C07C67/00

Abstract: Anthraquinone-1-acetic acid and esters thereof are prepared by reacting anthraquinone-1-diazonium salts with 1, 1-dichloroethylene in the presence of cuprous salts and H2O or alcohols.

公开(公告)号：CA954669A

公开(公告)日：1974-09-17

申请号：CA120242

申请日：1971-08-10

Applicant: MONTEDISON SPA

Inventor： VISCONTI ROBERTO ,  RIBALDONE GIUSEPPE

IPC: C01B21/26

公开(公告)号：CA854726A

公开(公告)日：1970-10-27

申请号：CA854726D

Applicant: MONTEDISON SPA

Inventor： RIBALDONE GIUSEPPE ,  GAFA SALVATORE ,  AGAMENNONE MARCO ,  BORSOTTI GIAMPIERO

公开(公告)号：AT279572B

公开(公告)日：1970-03-10

申请号：AT649764

申请日：1964-07-28

Applicant: MONTEDISON SPA

Inventor： RIBALDONE GIUSEPPE ,  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.