C - Chemistry – Metallurgy – 07 – F
Patent
C - Chemistry, Metallurgy
07
F
C07F 9/6568 (2006.01) B01J 31/24 (2006.01) B01J 31/28 (2006.01) C07B 53/00 (2006.01) C07B 57/00 (2006.01) C07F 15/00 (2006.01)
Patent
CA 2322986
The invention concerns a method for separating (d/l) and (meso) diastereoisomers of bis-[1-phospha- 2,3-diphenyl- 4,5-dimethylnorbornadiene]. The invention also concerns a method for preparing optically active diphosphines of bis- [1-phospha-2,3 -diphenyl-4,5 -dimethylnorbonadiene]. The bis- [1-phospha- 2,3-diphenyl-4,5 -dimethylnorbonadiene] diastereoisomers are separated by a method which consists in transforming the mixture of bis- [1-phospha- 2,3-diphenyl-4,5 -dimethylnorbonadiene] diastereoisomers into a mixture of the corresponding diphosphine dioxide or disulphide, then in separating the two diastereoisomers in the form of dioxide and disulphide.
La présente invention a trait à un procédé de séparation de diastéréoisomères (d/l) et (méso) de bis-[1-phospha- 2,3-diphényl- 4,5-diméthylnorbornadiène]. L'invention concerne également un procédé de préparation de diphosphines optiquement actives de bis- [1-phospha-2,3 -diphényl-4,5 - diméthylnorbornadiène]. Les diastéréoisomères de bis- [1-phospha- 2,3-diphényl- 4,5 -diméthylnorbornadiène] sont séparés selon un procédé qui consiste à transformer le mélange de diastéréoisomères de bis- [1-phopha- 2,3-diphényl- 4,5 -diméthylnorbornadiène], en un mélange de diastéréoisomères de dioxyde ou de disulfure de la diphosphine correspondante, puis à séparer les deux diastéréoisomères sous forme dioxyde ou disulfure.
Mathey Francois
Mercier Francois
Robin Frederic
Spagnol Michel
Rhodia Chimie
Robic
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