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US 9,851,314 B2Granted
Chiral metal complex and use thereof for analyzing chirality of charged compound by 1H NMR spectroscopy
AssigneeKorea Advanced Institute of Science and Technology
InventorsHyunwoo Kim, Min-Seob Seo
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Abstract
Provided are novel ligand, a chiral metal complex including the same, and a use of the chiral metal complex for analyzing the chirality of a charged compound by 1H NMR spectroscopy. The chiral metal complex of the present invention may be used as the chiral solvating agent to conveniently analyze the optical purity of charged compounds such as various amine derivatives, carboxylic acid derivatives, cyanohydrin derivatives and charged metal complexes by 1H NMR spectroscopy.
Claims7
A N2O2 ligand having the following Chemical Formula 1:
- wherein
- R1 and R2 are independently of each other (C1-C10) alkyl or (C6-C20) aryl, or R1 and R2 are linked via (C2-C6) alkylene to form a cycloaliphatic ring;
- and
- R3 and R4 are independently of each other hydrogen, (C1-C10) alkyl, or halogen.
1 more element
A metal complex having the following Chemical Formula 2:
- wherein
- R1 and R2 are independently of each other (C1-C10) alkyl or (C6-C20) aryl, or R1 and R2 are linked via (C2-C6) alkylene to form a cycloaliphatic ring;
- R3 and R4 are independently of each other hydrogen, (C1-C10) alkyl, or halogen;
- when M is Al3+ or Sc3+, n is −1, and Y is H+, Li+, Na+, K+, Ag+, Cs+, NR4+, ½ Mg2+, ½ Ca2+, ½ Zn2+ or ⅓ Al3+;
- and
- when M is Ti4+, n is 0, and Y does not exist.
3 more elements
Dependencies are inferred from the claim text.