Catalytic hydrogenation
AssigneeSchlumberger Technology Corporation
InventorsLi Jiang, Timothy Jones, Fenglou Zou
Life of this patent
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Abstract
Catalytic hydrogenation of a double bond, notably a C═C or C═N double bond, is carried out using a homogenous catalyst which is a complex of rhodium or other transition metal containing at least one ligand which is a nitrogenous organic base. Preferably the complex is phosphorus-free and the ligand is a bicyclic base having formula where R1 and R4 are hydrocarbon chains. R1 preferably is a saturated chain of two carbon atoms and R4 preferably is a saturated chain of three to five carbon atoms.
Claims12
A process for hydrogenating a compound at a double bond between carbon and another atom by contacting the compound with hydrogen in the presence of a catalytic complex, characterized in that the complex is a transition metal complex containing a ligand which is a heterocyclic organic base of the formula
- where R1 comprises a substituted or unsubstituted hydrocarbon chain of at least two carbon atoms and R2 and R3 are substituted or unsubstituted hydrocarbon groups or R2 and R3 together are a substituted or unsubstituted hydrocarbon chain of at least two carbon atoms.
Dependencies are inferred from the claim text.