EP 1112245 A1 20010704 - METHOD FOR PRODUCING GAMMA,DELTA-UNSATURATED KETONES BY CARROLL-REACTION
Title (en)
METHOD FOR PRODUCING GAMMA,DELTA-UNSATURATED KETONES BY CARROLL-REACTION
Title (de)
VERFAHREN ZUR HERSTELLUNG GAMMA,DELTA-UNGESÄTTIGTER KETONE DURCH CARROLL-REAKTION
Title (fr)
PROCEDE POUR PREPARER DES CETONES GAMMA,DELTA-INSATUREES PAR REACTION DE CARROLL
Publication
Application
Priority
- DE 19840746 A 19980907
- EP 9906447 W 19990902
Abstract (en)
[origin: WO0014046A1] The invention relates to a method for producing gamma , delta -unsaturated ketones of general formula (I) by reacting an acetoacetic alkyl ester with an allyl alcohol or a propargyl alcohol of general formula (II) in which R<1> can represent H or a saturated or unsaturated, branched hydrocarbon radical which is optionally substituted by methoxy groups and which has 1 to 33 C-atoms, and the dashed line can represent another bond between the C-atoms carrying the same. The reaction is carried out at temperatures ranging from 150 to 220 DEG C in an optionally modified Carroll reaction, in the presence of an aluminum catalyst, and by distilling off the alkanol formed during the reaction. The inventive method is characterized in that an acetoacetic ester of general formula (III) is used as an acetoacetic alkyl ester in which R<2> represents an alkyl group with 1 to 4 C-atoms.
IPC 1-7
IPC 8 full level
C07B 61/00 (2006.01); C07C 45/67 (2006.01); C07C 45/71 (2006.01); C07C 49/203 (2006.01)
CPC (source: EP KR)
C07C 45/67 (2013.01 - KR); C07C 45/676 (2013.01 - EP)
Citation (search report)
See references of WO 0014046A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 0014046 A1 20000316; AU 5858399 A 20000327; CA 2343521 A1 20000316; CN 1348434 A 20020508; DE 19840746 A1 20000309; EP 1112245 A1 20010704; ID 27392 A 20010405; IL 141689 A0 20020310; JP 2002524435 A 20020806; KR 20010074970 A 20010809
DOCDB simple family (application)
EP 9906447 W 19990902; AU 5858399 A 19990902; CA 2343521 A 19990902; CN 99812906 A 19990902; DE 19840746 A 19980907; EP 99946093 A 19990902; ID 20010546 A 19990902; IL 14168999 A 19990902; JP 2000568806 A 19990902; KR 20017002894 A 20010306