Global Patent Index - EP 0993434 A1

EP 0993434 A1 2000-04-19 - USE OF AN ACID OF MEAN STRENGTH AS IZOMERISATION CATALYST OF AN EPOXIDE WITH A CARBONYL FUNCTION IN THE EPOXIDE ALPHA

Title (en)

USE OF AN ACID OF MEAN STRENGTH AS IZOMERISATION CATALYST OF AN EPOXIDE WITH A CARBONYL FUNCTION IN THE EPOXIDE ALPHA

Title (de)

GEBRAUCH EINER SÄURE MITTLERER STÄRKE ALS KATALYSATOR ZUR ISOMERISATION EINES EPOXYDES DER EINE CARBONYLFUNKTION IN ALPHA ZUM EPOXYD ENTHÄLT

Title (fr)

UTILISATION D'ACIDE DE FORCE MOYENNE COMME CATALYSEUR D'ISOMERISATION D'UN EPOXYDE PRESENTANT UNE FONCTION CARBONYLE EN ALPHA DE L'EPOXYDE

Publication

EP 0993434 A1 (FR)

Application

EP 98933703 A

Priority

  • FR 9801331 W
  • FR 9707873 A

Abstract (en)

[origin: FR2764885A1] The invention concerns a method for the izomerisation of an epoxide with a carbonyl function in the epoxide alpha characterised in that it consists in subjecting said epoxide dissolved in a slightly polar medium to the action of an acid whereof the pKa (measured in an aqueous medium) ranges between zero and 3 and the solubility in benzene is at least low (symbol d or delta in the "handbook of chemistry and physics) at a temperature between 50 DEG C and 150 DEG C. The invention is applicable to organic synthesis.

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

C07C 67/31; C07C 69/732; C07C 67/333

IPC 8 full level (invention and additional information)

B01J 27/24 (2006.01); B01J 31/02 (2006.01); C07B 61/00 (2006.01); C07C 67/31 (2006.01); C07C 67/333 (2006.01); C07C 69/716 (2006.01); C07C 69/732 (2006.01)

CPC (invention and additional information)

C07C 67/31 (2013.01); C07C 67/333 (2013.01)

Combination set (CPC)

  1. C07C 67/31 + C07C 69/732
  2. C07C 67/333 + C07C 69/732

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 2764885 A1 19981224; FR 2764885 B1 19990910; AU 8343198 A 19990104; CN 1261343 A 20000726; EP 0993434 A1 20000419; JP 2002504920 A 20020212; WO 9858898 A1 19981230

INPADOC legal status


2004-09-08 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20040225

2001-08-16 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20010702

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

- Effective date: 20000111

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

- Kind Code of Ref Document: A1

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