Back to results
US 10,093,692 B2Granted
Phosphines, synthesis thereof and their use in catalysis
AssigneeThe Hong Kong Polytechnic University
InventorsFuk Yee Kwong, Shun Man Wong, Chung Chiu Yeung
Life of this patent
Estimating the term…
Abstract
The present invention relates to a novel class of benzimidazolyl/imidazolyl phosphine ligands, methods of preparing such ligands via a simple one-pot protocol, and applications of the ligands in catalytic reactions.
Claims19
A phosphine ligand having the structure of formula (2):
- wherein Y represents C or SO;
- each of the two R1 independently represents alkyl;
- cycloalkyl;
- aryl;
- or heteroaryl, wherein the number of hetero atoms, selected from the group of N, O and S, may be 1 or 2;
- and each of R2-R6 independently represents hydrogen, halogen, alkyl, alkenyl, alkynyl, hydroxyl, alkoxyl, silyloxy, amino, nitro, sulfhydryl, alkylthio, imine, phosphoryl, phosphonate, phosphine, carbonyl, silyl, thioalkyl, alkylsulfonyl, arylsulfonyl, selenoalkyl, heteroalkyl, nitrile, guanidine, amidine, acetal, ketal, amine oxide, aryl, heteroaryl, azide, aziridine, epoxide, imide, oxime, sulfonamide, thioamide, thiocarbamate, urea, or thiourea.
3 more elements
A phosphine ligand having the structure of formula (2):
- wherein Y represents C or SO;
- each of the two R1 independently represents alkyl;
- cycloalkyl;
- aryl;
- or heteroaryl, wherein the number of hetero atoms, selected from the group of N, O and S, may be 1 or 2;
- or the two R1 are linked to one another;
- and each of R2-R6 independently represents hydrogen, halogen, alkyl, alkenyl, alkynyl, hydroxyl, alkoxyl, silyloxy, amino, nitro, sulfhydryl, alkylthio, imine, phosphoryl, phosphonate, phosphine, carbonyl, silyl, thioalkyl, alkylsulfonyl, arylsulfonyl, selenoalkyl, heteroalkyl, nitrile, guanidine, amidine, acetal, ketal, amine oxide, aryl, heteroaryl, azide, aziridine, epoxide, imide, oxime, sulfonamide, thioamide, thiocarbamate, urea, or thiourea.
4 more elements
A phosphine ligand having the structure of formula (2):
- wherein Y represents C or SO;
- each of the two R1 independently represents alkyl;
- cycloalkyl;
- aryl;
- or heteroaryl, wherein the number of hetero atoms, selected from the group of N, O and S, may be 1 or 2;
- and each of R2-R6 independently represents hydrogen, halogen, alkyl, alkenyl, alkynyl, hydroxyl, alkoxyl, silyloxy, amino, nitro, sulfhydryl, alkylthio, imine, phosphoryl, phosphonate, phosphine, carbonyl, silyl, thioalkyl, alkylsulfonyl, arylsulfonyl, selenoalkyl, heteroalkyl, nitrile, guanidine, amidine, acetal, ketal, amine oxide, aryl, heteroaryl, azide, aziridine, epoxide, imide, oxime, sulfonamide, thioamide, thiocarbamate, urea, or thiourea;
- or two or more of R2, R3, R4, R5 and R6 of formula (2), when adjacent to one another, are linked to one another to form a condensed ring system.
4 more elements
Dependencies are inferred from the claim text.