Global Patent Index - EP 0991793 A1

EP 0991793 A1 2000-04-12 - METHOD FOR PREPARING 2-ARYL OR 2-HETEROCYCLYL CHIRAL PROPIONIC ACIDS AND THEIR ESTERS

Title (en)

METHOD FOR PREPARING 2-ARYL OR 2-HETEROCYCLYL CHIRAL PROPIONIC ACIDS AND THEIR ESTERS

Title (de)

VERFAHREN ZUR HERSTELLUNG VON CHIRALEN 2-ARYL ODER 2-HETEROCYCLYL PROPIONSÄUREN UND DEREN ESTER

Title (fr)

PROCEDE DE PREPARATION D'ACIDES 2-ARYL OU 2-HETEROCYCLYL PROPIONIQUES CHIRAUX ET LEURS ESTERS

Publication

EP 0991793 A1 (FR)

Application

EP 98933708 A

Priority

  • FR 9801336 W
  • FR 9707908 A

Abstract (en)

[origin: FR2765246A1] The invention concerns a method for preparing 2-aryl or 2-heterocyclyl chiral propionic acids and their esters by electrochemical reduction of a mixture of a propionic acid derivative of formula (II) in which R3 represents a radical of formula (A), (B), (C) and Hal represents a halogen atom and an aromatic or heterocyclic halogen derivative, in the presence of a nickel complex as catalyst and an electrolyte, then either by hydrolysis to obtain the propionic acid derivative or by transesterification to obtain the ester.

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

C25B 3/04

IPC 8 full level (invention and additional information)

C07D 233/14 (2006.01); C07B 37/04 (2006.01); C07B 41/08 (2006.01); C07C 51/09 (2006.01); C07C 57/30 (2006.01); C07C 57/38 (2006.01); C07C 59/68 (2006.01); C07C 59/84 (2006.01); C07C 67/03 (2006.01); C07C 69/612 (2006.01); C07C 69/65 (2006.01); C07C 69/734 (2006.01); C07C 69/738 (2006.01); C07C 227/10 (2006.01); C07C 229/42 (2006.01); C07D 213/55 (2006.01); C07D 263/26 (2006.01); C07D 333/24 (2006.01); C25B 3/04 (2006.01)

CPC (invention and additional information)

C25B 3/04 (2013.01)

Citation (search report)

See references of WO 9900535A1

Designated contracting state (EPC)

DE FR GB IT

EPO simple patent family

FR 2765246 A1 19981231; FR 2765246 B1 19990917; DE 69802809 D1 20020117; EP 0991793 A1 20000412; EP 0991793 B1 20011205; JP 2002507972 A 20020312; US 6294069 B1 20010925; WO 9900535 A1 19990107

INPADOC legal status


2003-04-04 [REG FR ST] NOTIFICATION OF LAPSE

2003-02-28 [PG25 FR] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: FR

- Free text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20030228

2002-11-27 [26N] NO OPPOSITION FILED

2002-06-05 [GBV] GB: EP PATENT (UK) TREATED AS ALWAYS HAVING BEEN VOID IN ACCORDANCE WITH GB SECTION 77(7)/1977

- Effective date: 20011205

2002-03-06 [PG25 DE] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: DE

- Free text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

- Effective date: 20020306

2002-01-17 [REF] CORRESPONDS TO:

- Document: DE 69802809 20020117

2002-01-01 [REG GB IF02] EUROPEAN PATENT IN FORCE AS OF 2002-01-01

2001-12-05 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: B1

- Designated State(s): DE FR GB IT

2001-12-05 [PG25 GB] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: GB

- Free text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

- Effective date: 20011205

2001-12-05 [PG25 IT] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: IT

- Free text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

- Effective date: 20011205

2001-06-06 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20010423

2000-04-12 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000125

2000-04-12 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): DE FR GB IT