Catalytic Atroposelective Synthesis of C-N Axially Chiral Aminophosphines via Dynamic Kinetic Resolution.
Angew Chem Int Ed Engl
; : e202409524, 2024 Jun 25.
Article
en En
| MEDLINE
| ID: mdl-38923738
ABSTRACT
A ruthenium-catalyzed reductive amination via asymmetric transfer hydrogenation (ATH) has been used to perform an efficient dynamic kinetic resolution (DKR) of N-aryl 2-formyl pyrroles decorated with a phosphine moiety positioned at the ortho' position. The strategy relies on the labilization of the stereogenic axis in the substrate facilitated by a transient Lewis acid-base interaction (LABI) between the carbonyl carbon and the phosphorus center. The reaction features broad substrate scope of aliphatic amines and N-Aryl pyrrole scaffolds, and proceeds under very mild conditions to afford P,N atropisomers in good to high yields and excellent enantioselectivities (up to 99% ee) for both diphenyl and dicyclohexylphosphino derivatives.
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Colección:
01-internacional
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MEDLINE
Idioma:
En
Revista:
Angew Chem Int Ed Engl
Año:
2024
Tipo del documento:
Article
País de afiliación:
España