EP 1680383 A2 20060719 - METHOD FOR THE PRODUCTION OF PHYTOFLUENE
Title (en)
METHOD FOR THE PRODUCTION OF PHYTOFLUENE
Title (de)
VERFAHREN ZUR HERSTELLUNG VON PHYTOFLUEN
Title (fr)
PROCEDE POUR PRODUIRE DU PHYTOFLUENE
Publication
Application
Priority
- EP 2004011582 W 20041015
- DE 10349983 A 20031024
Abstract (en)
[origin: WO2005042446A2] The invention relates to a method for the production of phytofluene of formula I, where a) a phosphonium salt of formula II is condensed with an aldehyde of formula III to give an acetal of formula IV in a Wittig reaction, b) the condensation product of formula IV undergoes an acid-catalysed acetal hydrolysis to give the aldehyde of formula V and c) V is condensed with a phosphonium salt of formula VI to give phytofluene in a further Wittig reaction, whereby the groups R<1>, R<2>, R<7>, X<-> and Y<-> have the meanings given in the description.
IPC 1-7
IPC 8 full level
C07C 11/21 (2006.01); C07C 1/34 (2006.01); C07C 45/51 (2006.01); C07C 45/59 (2006.01); C07C 45/60 (2006.01); C07C 47/21 (2006.01)
CPC (source: EP US)
C07C 1/34 (2013.01 - EP US); C07C 45/515 (2013.01 - EP US); C07C 45/59 (2013.01 - EP US); C07C 45/60 (2013.01 - EP US)
Citation (search report)
See references of WO 2005042446A2
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2005042446 A2 20050512; WO 2005042446 A3 20070315; CA 2542052 A1 20050512; CN 101035748 A 20070912; DE 10349983 A1 20050525; EP 1680383 A2 20060719; JP 2007512235 A 20070517; US 2007004925 A1 20070104; US 7271296 B2 20070918
DOCDB simple family (application)
EP 2004011582 W 20041015; CA 2542052 A 20041015; CN 200480031338 A 20041015; DE 10349983 A 20031024; EP 04790438 A 20041015; JP 2006536009 A 20041015; US 59550304 A 20041015