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US 2023/0099631 A1Published application
Process for the synthesis of s-beflubutamid using asymmetric hydrogenation
AssigneeCheminova A/S
InventorKåre SØNDERGAARD
Life of this patent
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Abstract
Disclosed is a method for preparing compound S-1, from compound S-5; wherein compound S-5 is prepared by treating compound 2 with a tertiary amine and a hydrogen source in the presence of a chiral complex.
Claims21
A method for preparing compound S-1
- from compound S-5
- wherein compound S-5 is prepared by treating compound 2
- with a tertiary amine and a hydrogen source in the presence of a chiral complex.
-29. (canceled)
A method for preparing compound S-5
- the method comprising:
- treating compound 2
- with a tertiary amine and a hydrogen source in the presence of a chiral complex.
A compound of Formula 16
- wherein G is OH, C1-C6 alkoxy or O−M+;
- and M+ is an alkali metal cation or a tertiary ammonium cation.
Dependencies are inferred from the claim text.