Bisphosphite ligands for hydroformylation catalyzed by...

Details Bisphosphite ligands for hydroformylation catalyzed by... Bisphosphite ligands for hydroformylation catalyzed by...

2011-08-23

2011-08-23

Witherspoon, Sikarl (Department: 1621)

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

Organic compounds

Phosphorus esters

C556S013000, C568S454000

Reexamination Certificate

active

08003816

ABSTRACT:
The invention relates to a bisphosphite of the formula Iwhere X=a divalent substituted or unsubstituted bisalkylene or bisarylene radical, Y=a divalent substituted or unsubstituted bisarylene or bisalkylene radical, Z=oxygen or NR9, and R1, R2, R3, R4are identical or different, substituted or unsubstituted, linked, unlinked or fused aryl or heteroaryl radicals and R9is hydrogen or a substituted or unsubstituted alkyl or aryl radical, a process for preparing it and also the use of this phosphite in catalysis in particular in the catalytic hydroformylation of olefins or organic compounds having C—C double bonds.

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