Diphosphines and metal complexes

Details Diphosphines and metal complexes Diphosphines and metal complexes

2011-01-04

2011-01-04

Aulakh, Charanjit S (Department: 1625)

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C546S021000

Reexamination Certificate

active

07863447

ABSTRACT:
A compound of the formula I or I′,where the radicals R1are each, independently of one another, a hydrogen atom or C1-C4-alkyl and R′1is C1-C4-alkyl; X1and X2are each, independently of one another, a sec-phosphino group; R2is (1) hydrogen, (2) R01R02R03Si—, (3) C1-C18-acyl substituted with halogen, hydroxyl, C1-C8-alkoxy or R04R05N—, or (4) R06—X01—C(O)—; R01, R02and R03are each, independently of one another, C1-C12-alkyl, unsubstituted or C1-C4-alkyl- or C1-C4-alkoxy-substituted C6-C10-aryl or C7-C12-aralkyl; R04and R05are each, independently of one another, hydrogen, C1-C12-alkyl, C3-C8-cycloalkyl, C6-C10-aryl or C7-C12-aralkyl, or R04and R05together are trimethylene, tetramethylene, pentamethylene or 3-oxapentylene; R06is C1-C18-alkyl, unsubstituted or C1-C4-alkyl- or C1-C4-alkoxy-substituted C3-C8-cycloalkyl, C6-C10-aryl or C7-C12-aralkyl; X01is —O— or —NH—; T is C-bonded C3-C20-heteroarylene; v is 0 or an integer from 1 to 4; X1in the heteroring of the heteroarylene is bound in the ortho position relative to the T—C* bond; and * indicates a mixture of racemic or enantiomerically pure diastereomers or pure racemic or enantiomerically pure diastereomers.

REFERENCES:
patent: 2005/0240007 (2005-10-01), Knochel et al.
patent: 03/093285 (2003-11-01), None
patent: 2005/095426 (2005-10-01), None
patent: 2005/108409 (2005-11-01), None
International Search Report issued Nov. 2, 2006 in the International (PCT) Application of which the present application is the U.S. National Stage.
PCT Written Opinion for PCT/EP2006/061650, Sep. 28, 2007.
Matthias Lotz et al., “New Ferrocenyl Ligands with Broad Applications in Asymmetric Catalysis”, Angew. Chem. Int. Ed., vol. 41, No. 24, pp. 4708-4711, XP002396743, 2002.
Armin Börner, “Chiral hydroxy phosphines as ligands for asymmetric hydrogenation and versatile building blocks for hybrid ligands”, Chimica Oggi, Teknoscienze, Milano, Italy, vol. 82, pp. 48-52, XP009057245, ISSN: 0392-839X, Jun. 2000.

Affiliated with

Also associated with

Rating

Diphosphines and metal complexes does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Diphosphines and metal complexes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Diphosphines and metal complexes will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2737115