Chiral cheating agent and chiral catalyst
AssigneeNational Taiwan Normal University
InventorsKwunmin Chen, Kung-Shou Yang, Wei-Der Lee, Jia-Fu Pan
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Abstract
Chiral chelating agents and chiral catalysts, which are formed from the chiral chelating agents and metal, are described. One chiral chelating agent has a general formula (1) as illustrated below: wherein R represents H, methyl, ethyl, a primary, secondary or tertiary straight, branched or cyclic alkyl group having 3-7 carbon atoms, a heterocyclic or aromatic group, an aromatic group substituted at the 2-, 3- or 4-position, an aromatic-like group, or a naphthyl or naphthyl-derived group, and n is an integer between 0 and 4.
Claims4
A chiral chelating agent having a formula (13) as follows and an enantiomeric isomer thereof:
- wherein n is an integer between 0 and 4.
A chiral chelating agent having a formula (14) as follows and an enantiomeric isomer thereof:
- wherein n is an integer between 0 and 4.
A chiral chelating agent having a formula (15) as follows and an enantiomeric isomer thereof:
- wherein n is an integer between 0 and 4.
A chiral chelating agent having a formula (16) as follows and a diastereomeric or an enantiomeric isomer thereof:
- wherein X represents an oxygen atom or a nitrogen atom;
- R1, R2 R3 and R4 represent H, methyl, ethyl, a primary, secondary or tertiary straight, branched or cyclic alkyl group having 3-7 carbon atoms, a heterocyclic or aromatic group, an aromatic group substituted at the 2-, 3- or 4-position, an aromatic-like group, a naphthyl or naphthyl-derived group or the above groups substituted with at least a halogen.
Dependencies are inferred from the claim text.