Global Patent Index - EP 0000633 A3

EP 0000633 A3 19790613 - 2,5 -DISUBSTITUTED-3-SUBSTITUTED METHYL-PENTA-2,4-DIENOIC ACID AND DERIVATIVES, PROCESS FOR THEIR PREPARATION AND THEIR USE IN THE PREPARATION OF ALPHA-SUBSTITUTED-THIEN-3-YL ACETIC ACID AND DERIVATIVES

Title (en)

2,5 -DISUBSTITUTED-3-SUBSTITUTED METHYL-PENTA-2,4-DIENOIC ACID AND DERIVATIVES, PROCESS FOR THEIR PREPARATION AND THEIR USE IN THE PREPARATION OF ALPHA-SUBSTITUTED-THIEN-3-YL ACETIC ACID AND DERIVATIVES

Publication

EP 0000633 A3 19790613

Application

EP 78300140 A 19780712

Priority

GB 3100877 A 19770723

Abstract (en)

[origin: EP0023726A1] A class of intermediates useful in the preparation of 3-substituted thiophenes and a process for preparing said intermediates. The thiophenes are useful for the preparation of penicillins and cephalosporins A compound of formula (II): <CHEM> where R<1> represents a carboxylic acid group, or an ester or amide thereof or a nitrile group; R<2> represents a group suitable for use as an alpha -substituent in the side-chain of a penicillin or cephalosporin; X represents halogen or optionally functionalised hydroxyl and Y represents halogen, hydroxyl, or alkoxy.

IPC 1-7

C07D 333/24; C07C 57/02; C07C 69/52

IPC 8 full level

C07C 45/00 (2006.01); C07C 57/52 (2006.01); C07C 67/00 (2006.01); C07C 69/65 (2006.01); C07C 231/00 (2006.01); C07C 231/12 (2006.01); C07C 233/09 (2006.01); C07C 235/28 (2006.01); C07C 253/00 (2006.01); C07C 255/10 (2006.01); C07D 333/24 (2006.01)

CPC (source: EP US)

C07C 45/00 (2013.01 - EP US); C07C 57/52 (2013.01 - EP US); C07C 255/00 (2013.01 - EP US); C07D 333/24 (2013.01 - EP US)

C-Set (source: EP US)

C07C 45/00 + C07C 49/227

Citation (search report)

  • [A] US 2662914 A 19531215 - ROBESON CHARLES D
  • [A] DE 1667997 A1 19710722 - TENNECO CHEM
  • [A] FR 990943 A 19510927 - BATAAFSCHE PETROLEUM
  • CHEMICAL ABSTRACTS, vol. 76 (1972) no. 113022q, Columbus, Ohio, (USA) & GETEROGENNYI KATAL. REAKTS. POLUCH. PREVRASHCH. GETEROSIKL. SOEDIN. 1971, 221-8
  • CHEMICAL ABSTRACTS, vol. 86 (1977) no. 72422n, Columbus, Ohio, USA; & SU-A-527 431 (IRKUTSK INST. ORG. CHEM.)
  • [A] CHEMICAL ABSTRACTS, vol. 86 (1977) no. 189703w, Columbus, Ohio, USA; & JP-A-51 122 061 (SEITETSU CHEM. IND.) (25-10-1976)

Designated contracting state (EPC)

BE CH DE FR GB NL SE

DOCDB simple family (publication)

EP 0023726 A1 19810211; EP 0023726 B1 19820519; DK 323978 A 19790124; EP 0000633 A2 19790207; EP 0000633 A3 19790613; EP 0000633 B1 19811104; ES 471964 A1 19800116; FI 782300 A 19790124; IE 47135 B1 19831228; IE 781469 L 19790123; IL 55144 A0 19780929; IT 1105934 B 19851111; IT 7850415 A0 19780721; JP S5424867 A 19790224; US 4252976 A 19810224; US 4282373 A 19810804; ZA 784101 B 19790725

DOCDB simple family (application)

EP 80105285 A 19780712; DK 323978 A 19780719; EP 78300140 A 19780712; ES 471964 A 19780721; FI 782300 A 19780720; IE 146978 A 19780721; IL 5514478 A 19780714; IT 5041578 A 19780721; JP 9032178 A 19780724; US 3640779 A 19790507; US 92672778 A 19780721; ZA 784101 A 19780719