US 9,790,244 B2Granted

Bisphosphites having an unsymmetric outer biphenol unit

AssigneeEvonik Degussa GmbH

InventorsKatrin Marie Dyballa, Robert Franke, Dirk Fridag, Armin Boerner, Detlef Selent

Life of this patent

Estimating the term…

Bisphosphites having at least one unsymmetric outer biphenol unit are useful for the hydroformylation of an olefin.

Dependent claims

A compound represented by structure I:

Dependencies are inferred from the claim text.

C07F 9/65746
Esters of oxyacids of phosphorus: the molecule containing more than one cyclic phosphorus atom
B01J 31/185
The ligands containing phosphorus: phosphites , their isomeric phosphonates and RO-substitution derivatives thereof
C07B 41/06
Formation or introduction of functional groups containing oxygen: of carbonyl groups
C07C 45/50
By reaction with carbon monoxide: by oxo-reactions

From the US filing history. Foreign family members aren’t listed.

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