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US 11,111,257 B2Granted
Molecular catalysts for selective hydrogenolysis of amides
AssigneeEastman Chemical Company
InventorsJürgen Klankermayer, Stefan Westhues, Walter Leitner, Robert Thomas Hembre
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Abstract
A compound by the name 1,1,1-tris(di(3,5-dimethoxyphenyl)phosphino-methyl)ethane. The compound can be represented by the structure of formula (I): The compound is useful as a ligand for ruthenium to form an organometallic complex. The complex is an active catalyst for the hydrogenolysis of amides to form amines and optionally alcohols.
Claims20
A compound having the structural formula (I):
An organometallic compound having the structural formula (II):
- wherein
- Ar represents a 3,5-dimethoxyphenyl group, and
- L represents a ligand selected from trimethylenemethane, allyl, methylallyl, ethylene, cyclooctadiene, acetylacetonate, and acetate.
A process for hydrogenolysing an amide, the process comprising:
- contacting an amide with hydrogen in the presence of an organometallic catalyst comprising a central metal and a tridentate ligand at conditions effective to form an amine and optionally an alcohol,
- wherein the central metal comprises ruthenium, and
- wherein the tridentate ligand has the structural formula (I):
Dependencies are inferred from the claim text.