Bisphosphite and process for producing aldehyde compound...

Details Bisphosphite and process for producing aldehyde compound... Bisphosphite and process for producing aldehyde compound...

2005-03-22

2009-02-17

Witherspoon, Sikarl A (Department: 1621)

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

Organic compounds

Phosphorus containing

C568S454000

Reexamination Certificate

active

07491850

ABSTRACT:
Bisphosphite(s) represented by the following general formula (I):wherein Ar1and Ar2are each independently a substituted or unsubstituted arylene group; R1, R2, R7and R8are each independently a substituted or an unsubstituted alkyl group, a substituted or an unsubstituted aryl group or a substituted or an unsubstituted heterocyclic group, or R1and R2or R7and R8may together form a ring with their associated oxygen atoms and phosphor atom; and R3, R4, R5and R6are each independently a hydrogen atom or an alkyl group, with the proviso that the carbon atom bearing R3and R4and the carbon atom bearing R5and R6are bound to the respective arylene groups at the ortho position to the Ar1—Ar2bond. Also provided is a process for producing aldehyde(s) using the bisphosphite and a Group 8 to 10 metal compound. A composition comprising the bisphosphite and a Group 8 to 10 metal compound is further provided.

REFERENCES:
patent: 5910600 (1999-06-01), Urata et al.
patent: 6274773 (2001-08-01), Gelling et al.
patent: 6570033 (2003-05-01), Rottger et al.
patent: 2004/0199023 (2004-10-01), Whiteker et al.
patent: 2005/0164874 (2005-07-01), Tsuji
patent: 0 518 241 (1992-12-01), None
patent: 10 45776 (1998-02-01), None
patent: 2001-503757 (2001-03-01), None
patent: 2004-501927 (2004-01-01), None
Christopher J. Cobley, et al., “Synthesis and Application of a New Bisphosphite Ligand Collection for Asymmetric Hydroformylation of Allyl Cyanide”, J. Org. Chem., vol. 69, pp. 4031-4040, 2004.
U.S. Appl. No. 10/594,131, filed Sep. 25, 2006, Tsuji et al.

Affiliated with

Also associated with

Rating

Bisphosphite and process for producing aldehyde compound... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Bisphosphite and process for producing aldehyde compound..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bisphosphite and process for producing aldehyde compound... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4077721