Global patent index - EP 0993435 A1

EP 0993435 A1 2000-04-19 - USE OF AN ANILINE DEPLETED IN ELECTRON TO RELEASE HYDROCHLORIC ACID PRESENT IN A REACTION MIXTURE AND METHOD FOR DISPLACING, AT LEAST PARTIALLY, AN ANILINE FROM ITS CHLORHYDRATE

Title (en)

USE OF AN ANILINE DEPLETED IN ELECTRON TO RELEASE HYDROCHLORIC ACID PRESENT IN A REACTION MIXTURE AND METHOD FOR DISPLACING, AT LEAST PARTIALLY, AN ANILINE FROM ITS CHLORHYDRATE

Title (de)

VERWENDUNG EINES ELEKTRONENARMEN ANILINDERIVATES ZUR FREISETZUNG VON SALZSÄURE AUS EINER REAKTIONSMISCHUNG UND METHODE ZUR, ZUMINDEST TEILWEISEN, FREISETZUNG EINES ANILINES AUS SEINEM CHLORHYDRAT

Title (fr)

UTILISATION D'ANILINE APPAUVRIE EN ELECTRON POUR LIBERER DE L'ACIDE CHLORHYDRIQUE PRESENT DANS UN MELANGE REACTIONNEL ET PROCEDE POUR DEPLACER, AU MOINS PARTIELLEMENT, UNE ANILINE DE SON CHLORHYDRATE

Publication

EP 0993435 A1 (FR)

Application

EP 98933706 A

Priority

  • FR 9801334 W
  • FR 9707872 A

Abstract (en)

[origin: FR2764886A1] The invention concerns a method for displacing, at least partially, an aniline from its chlorhydrate, characterised in that said aniline is selected among anilines whereof the conjugate acid has a pKa not more than 6 and in that it consists in a step wherein it is subjected at a temperature not less than about 50 DEG C, advantageously about 70 DEG C to a reaction medium containing said chlorhydrate at least partially dissolved in a weakly polar solvent. The invention is applicable to organic synthesis.

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

C07C 209/86; C07C 269/08

IPC 8 full level (invention and additional information)

C07C 209/86 (2006.01); C07C 211/52 (2006.01); C07C 269/04 (2006.01); C07C 269/08 (2006.01); C07C 271/04 (2006.01)

CPC (invention and additional information)

C07C 209/86 (2013.01); C07C 269/08 (2013.01)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

FR 2764886 A1 19981224; FR 2764886 B1 20020906; AU 8343498 A 19990104; CN 1261344 A 20000726; EP 0993435 A1 20000419; JP 2002504923 A 20020212; US 6225502 B1 20010501; WO 9858900 A1 19981230

INPADOC legal status

2003-03-05 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20020817

2002-03-20 [17Q] FIRST EXAMINATION REPORT

- Ref Legal Event Code: 17Q

- Effective date: 20020205

2000-04-19 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 19991122

2000-04-19 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE