Global patent index - EP 0996609 A1

EP 0996609 A1 2000-05-03 - METHOD FOR PRODUCING 6,10 AND 6,9-DIMETHYL-5,10-UNDECADIENYL-2-ONES

Title (en)

METHOD FOR PRODUCING 6,10 AND 6,9-DIMETHYL-5,10-UNDECADIENYL-2-ONES

Title (de)

VERFAHREN ZUR HERSTELLUNG VON 6,10- UND 6,9-DIMETHYL-5,10-UNDECADIENYL-2-ONEN

Title (fr)

PROCEDE DE PRODUCTION DE 6,10 ET 6,9-DYMETHYL-5,10-UNDECADIENYL-2-ONES

Publication

EP 0996609 A1 (DE)

Application

EP 98936355 A

Priority

  • DE 19730546 A
  • EP 9803647 W

Abstract (en)

[origin: DE19730546A1] The invention relates to a method for producing 6,10 and 6,9-dimethyl-5,10-undecadienyl-2-ones by telomerising isoprene with alkyl acetoacetates in the presence of a transition-metal compound and a phosphor constituent as a catalyst system, optionally in the presence of a protic additive. The resulting beta -keto esters are then saponified and decarboxylated to produce the inventive compounds.

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

C07C 49/203; C07C 45/67; C07C 67/347; C07C 69/738

IPC 8 full level (invention and additional information)

C07B 61/00 (2006.01); C07C 45/67 (2006.01); C07C 45/69 (2006.01); C07C 49/203 (2006.01); C07C 67/347 (2006.01); C07C 69/738 (2006.01)

CPC (invention and additional information)

C07C 45/676 (2013.01); C07C 49/203 (2013.01); C07C 67/347 (2013.01)

Combination set (CPC)

  1. C07C 45/676 + C07C 49/203
  2. C07C 67/347 + C07C 69/738

Citation (search report)

See references of WO 9903811A1

Designated contracting state (EPC)

BE CH DE DK FR GB IT LI NL SE

EPO simple patent family

DE 19730546 A1 19990121; CN 1264357 A 20000823; EP 0996609 A1 20000503; JP 2001510177 A 20010731; US 6310259 B1 20011030; WO 9903811 A1 19990128

INPADOC legal status

2004-02-11 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20030806

2001-06-27 [17Q] FIRST EXAMINATION REPORT

- Ref Legal Event Code: 17Q

- Effective date: 20010514

2001-05-02 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: DEGUSSA AG

- Ref Legal Event Code: RAP1

2000-05-03 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 19991210

2000-05-03 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): BE CH DE DK FR GB IT LI NL SE