Global Patent Index - EP 0975571 A1

EP 0975571 A1 2000-02-02 - METHOD FOR PREPARING AROMATIC ALDEHYDES

Title (en)

METHOD FOR PREPARING AROMATIC ALDEHYDES

Title (de)

VERFAHREN ZUR HERSTELLUNG VON AROMATISCHEN ALDEHYDEN

Title (fr)

PROCEDE DE PREPARATION D'ALDEHYDES AROMATIQUES

Publication

EP 0975571 A1 (FR)

Application

EP 98920624 A

Priority

  • FR 9800759 W
  • FR 9704738 A

Abstract (en)

[origin: FR2762314A1] The invention concerns a method for preparing aromatic aldehydes from halogenonaphthalene compounds, more particularly for preparing 2-formyl-6-methoxynaphthalene. The method for preparing an aromatic aldehyde from a naphthalene compound bearing two halogen atoms and an electron donor group located in ortho position of one of the halogen atoms, is characterised in that it consists in reacting said compound with a mixture of carbon monoxide and hydrogen, in the presence of a base and a catalyst comprising at least an element of group VIII of the classification of elements, said element forming a complex with at least a co-ordination agent or ligand.

IPC 1-7 (main, further and additional classification)

C07C 45/49; C07C 47/575

IPC 8 full level (invention and additional information)

C07C 45/49 (2006.01); C07C 47/575 (2006.01)

CPC (invention and additional information)

C07C 45/49 (2013.01)

Combination set (CPC)

C07C 45/49 + C07C 47/575

Designated contracting state (EPC)

CH DE FR GB IE IT LI

EPO simple patent family

FR 2762314 A1 19981023; FR 2762314 B1 19990618; AU 7341798 A 19981113; EP 0975571 A1 20000202; JP 2001521543 A 20011106; WO 9847848 A1 19981029

INPADOC legal status


2002-06-05 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20011101

2000-02-02 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19990925

2000-02-02 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): CH DE FR GB IE IT LI