Global Patent Index - EP 1071678 A1

EP 1071678 A1 2001-01-31 - CHEMICAL PROCESS FOR THE PRODUCTION OF SULPHINYL DERIVATIVES BY OXIDATION OF THE CORRESPONDING CO-DERIVATIVES WITH PERBORATES

Title (en)

CHEMICAL PROCESS FOR THE PRODUCTION OF SULPHINYL DERIVATIVES BY OXIDATION OF THE CORRESPONDING CO-DERIVATIVES WITH PERBORATES

Title (de)

VERFAHREN ZUR HERSTELLUNG VON SULFINYL-VERBINDUNGEN DURCH OXIDATION DER THIO-VERBINDUNG MIT PERBORATEN

Title (fr)

PROCEDE CHIMIQUE D'OBTENTION DE DERIVES DE SULPHINYLE PAR OXYDATION DES CODERIVES CORRESPONDANTS AVEC DES PERBORATES

Publication

EP 1071678 A1 (EN)

Application

EP 99915569 A

Priority

  • EP 9901574 W
  • GB 9805558 A

Abstract (en)

[origin: WO9947514A1] A process for the preparation of a compound of formula (I) in which R1, R2, R3 and R4 represent: a) (R1=CH3; R2=OCH3; R3=CH3; R4=OCH3) or b) (R1=CH3; R2=OCH2CF3; R3=H; R4=H) or c) (R1=OCH3; R2=OCH3; R3=H and R4=OCHF2) respectively and pharmaceutically acceptable salts thereof, comprising reacting a compound of formula (II) in which R1, R2, R3 and R4 represent a) (R1=CH3; R2=OCH3; R3=CH3, R4=OCH3) or b) (R1=CH3; R2=OCH2CF3; R3=H; R4=H) or c) R1=OCH3; R2=OCH3; R3=H and R4=OCHF2) respectively, with a perborate salt in a liquid diluent at a pH in the range of 7.5 to 14 at a temperature in the range of 0 DEG C to the boiling point of the liquid diluent employed.

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

C07D 401/12

IPC 8 full level (invention and additional information)

C07D 401/12 (2006.01)

CPC (invention and additional information)

C07D 401/12 (2013.01)

Citation (search report)

See references of WO 9947514A1

Designated contracting state (EPC)

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

EPO simple patent family

WO 9947514 A1 19990923; AU 3410699 A 19991011; BR 9908835 A 20001121; CA 2323422 A1 19990923; CN 1293670 A 20010502; EP 1071678 A1 20010131; GB 9805558 D0 19980513; HU 0101230 A2 20011028; HU 0101230 A3 20021028; IL 138001 D0 20011031; JP 2002506862 A 20020305; NO 20004580 A 20000914; NO 20004580 D0 20000914; SK 13452000 A3 20010409; TR 200002670 T2 20001121; TW 473476 B 20020121

INPADOC legal status


2002-06-12 [18W] WITHDRAWN

- Ref Legal Event Code: 18W

- Date of withdrawal: 20020420

2001-01-31 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20000824

2001-01-31 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

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

2001-01-31 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Ref Legal Event Code: AX

- Free Format Text: SI PAYMENT 20000824