Global Patent Index - EP 1254105 A1

EP 1254105 A1 2002-11-06 - METHOD FOR PRODUCING ALKOXY MALONIC ACID DINITRILES

Title (en)

METHOD FOR PRODUCING ALKOXY MALONIC ACID DINITRILES

Title (de)

VERFAHREN ZUR HERSTELLUNG VON ALKOXYMALONSÄUREDINITRILEN

Title (fr)

PROCEDE DE FABRICATION DE NITRILES D'ACIDE ALCOXY-MALONIQUE

Publication

EP 1254105 A1 (DE)

Application

EP 01905765 A

Priority

  • EP 01905765 A
  • EP 0101505 W
  • EP 00102758 A
  • EP 00109505 A
  • US 26708701 P

Abstract (en)

[origin: WO0158857A1] The invention relates to a method for producing alkoxy malonic acid dinitriles of general formula (I), wherein R<1> means C1-6-alkyl or halogen-substituted C1-6-alkyl. The method is characterised in that the corresponding alkoxy malonic acid diamides of general formula (II), wherein R<1> has the aforementioned meaning, are converted by means of a dehydrating agent. The invention also relates to the intermediate products of general formula (III), whereby said products are formed during dehydration.

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

C07C 253/20; C07C 255/27

IPC 8 full level (invention and additional information)

C07B 61/00 (2006.01); C07C 253/20 (2006.01); C07C 255/12 (2006.01); C07C 255/19 (2006.01); C07C 255/27 (2006.01); C07C 255/13 (2006.01); C07C 255/20 (2006.01)

CPC (invention and additional information)

C07C 253/20 (2013.01)

Combination set (CPC)

  1. C07C 253/20 + C07C 255/13
  2. C07C 253/20 + C07C 255/20

Citation (search report)

See references of WO 0158857A1

Designated contracting state (EPC)

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

EPO simple patent family

WO 0158857 A1 20010816; AU 3375901 A 20010820; EP 1254105 A1 20021106; JP 2003522753 A 20030729; US 2003144538 A1 20030731; US 2004063987 A1 20040401; US 6673957 B2 20040106

INPADOC legal status


2005-03-02 [18D] APPLICATION DEEMED TO BE WITHDRAWN

- Effective date: 20040821

2003-03-26 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20030203

2002-11-06 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20020806

2002-11-06 [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 TR

2002-11-06 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO:

- Free text: AL;LT;LV;MK;RO;SI