EP 1863781 A1 20071212 - METHOD FOR PRODUCING ALKOXYLATED 2,5-DIHYDROFURAN BUT-2-ENE DERIVATIVES OR TETRA-1,1,4,4-ALKOXYLATED BUT-2-ENE DERIVATIVES
Title (en)
METHOD FOR PRODUCING ALKOXYLATED 2,5-DIHYDROFURAN BUT-2-ENE DERIVATIVES OR TETRA-1,1,4,4-ALKOXYLATED BUT-2-ENE DERIVATIVES
Title (de)
VERFAHREN ZUR HERSTELLUNG VON ALKOXYLIERTEN 2,5-DIHYDROFURAN- ODER TETRA-1,1,4,4-ALKOXYLIERTEN BUT-2-ENDERIVATEN
Title (fr)
PROCEDE POUR PRODUIRE DES DERIVES ALKOXYLES DE 2,5-DIHYDROFURANE- OU DE TETRA-1,1,4,4-BUT-2-ENE
Publication
Application
Priority
- EP 2006060989 W 20060323
- DE 102005013631 A 20050324
Abstract (en)
[origin: WO2006100289A1] The invention relates to a method for producing 2,5-dihydrofuran derivatives that are substituted in position 3 or 4, which carry a respective C<SUB>1</SUB> to C<SUB>6</SUB> alkoxy group (DHF alkoxy derivates I) in position 2 or position 5, or in both positions, or for producing 1,1,4,4-tetraalkoxy but-2-ene derivatives that are substituted in position 3 or 4, from 2-butene-1,4-diol derivatives of general formula (I), in which the groups R<SUP>1</SUP> and R<SUP>2</SUP> independently of one another represent hydrogen, C<SUB>1</SUB> to C<SUB>6</SUB> alkyl, C<SUB>6</SUB> to C<SUB>12</SUB> aryl or C<SUB>5</SUB> to C<SUB>12</SUB> cycloalkene or R<SUP>1</SUP> and R<SUP>2</SUP> together with the double bond, to which they are linked, form a C<SUB>6</SUB> to C<SUB>12</SUB> aryl group or a mono- or polyunsaturated C<SUB>5</SUB> to C<SUB>12 </SUB>cycloalkyl group, or from a mixture of said 2-butene-1,4-diol derivatives and 2,5-dihydrofuran derivatives that are substituted in position 3 or 4 and carry a C<SUB>1</SUB> to C<SUB>6</SUB> alkoxy group in position 2 or 5, by electrochemical oxidation in the presence of a C<SUB>1</SUB> to C<SUB>6 </SUB>monoalkyl alcohol.
IPC 8 full level
C07D 307/32 (2006.01); C07C 41/50 (2006.01); C07D 307/88 (2006.01); C07D 307/89 (2006.01); C25B 3/23 (2021.01)
CPC (source: EP US)
C07D 307/32 (2013.01 - EP US); C07D 307/88 (2013.01 - EP US); C07D 307/89 (2013.01 - EP US); C25B 3/23 (2021.01 - EP US)
Citation (search report)
See references of WO 2006100289A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
DE 102005013631 A1 20060928; CA 2602077 A1 20060928; CN 101137635 A 20080305; EP 1863781 A1 20071212; JP 2008536007 A 20080904; US 2008110763 A1 20080515; WO 2006100289 A1 20060928
DOCDB simple family (application)
DE 102005013631 A 20050324; CA 2602077 A 20060323; CN 200680008008 A 20060323; EP 06725267 A 20060323; EP 2006060989 W 20060323; JP 2008502421 A 20060323; US 90850606 A 20060323