Use of perfluoroalkyl substituted phosphorus compounds as...

B - Operations – Transporting – 01 – J

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

252/124, 402/387

B01J 31/24 (2006.01) C07C 5/05 (2006.01) C07C 45/50 (2006.01) C07C 209/52 (2006.01) C07F 9/145 (2006.01) C07F 9/50 (2006.01) C08F 38/00 (2006.01)

Patent

CA 2278572

The invention relates to the use of phosphorus compounds containing one or more perfluoroalkyl chains of the general formula R1 [R1 = -(CH2)x(CF2)yE (E=F, H, x = 0-4, y = 2-12)] as catalysts or constituents of catalysts in a reaction mixture consisting essentially of the reactants, the catalyst and carbon dioxide in the supercritical state (scCO2). It was found in particular that the introduction of perfluoroalkyl side chains R1 into the aryl radicals of insoluble or poorly soluble arylphosphorus compounds markedly improves their solubility in scCO2, so that, surprisingly, it even surpasses the solubility of alkylphosphorus compounds known to be soluble. The invention also relates to the use of such reaction mixtures for the chemoselective hydrogenation of polyenes to monoenes for the hydroformylation of olefins, for the enantioselective hydrogenation of imines and for C-C cross-linking reactions.

L'invention concerne l'utilisation de composés phosphorés renfermant une ou plusieurs chaînes perfluoroalkyle, de formule générale R?1¿ [R?1¿ = (CH¿2?)¿x?(CF¿2?)¿y?E (E = F, H, x = 0 - 4, y = 2 - 12)], comme catalyseurs ou constituants de catalyseurs dans un mélange réactionnel contenant essentiellement des produits en réaction, le catalyseur et du dioxyde de carbone à l'état sur-critique (scCO¿2?). En particulier, on a trouvé que l'introduction de chaînes latérales perfluoroalkyle R?1¿ dans le reste alkyle de composés arylphosphorés insolubles ou difficilement solubles conduisait à une amélioration notable de leur solubilité dans scCO¿2?, laquelle dépasse même, de façon surprenante, la solubilité des composés alkylphosphorés solubles connus. L'invention concerne en outre l'utilisation de tels mélanges réactionnels pour l'hydrogénation chimio-sélective des polyènes en monoènes pour l'hydroformylation des oléfines, pour l'hydrogénation énantio-sélective des imines et pour des réactions de liaison C-C.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Use of perfluoroalkyl substituted phosphorus compounds as... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Use of perfluoroalkyl substituted phosphorus compounds as..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Use of perfluoroalkyl substituted phosphorus compounds as... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1789435

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.