The study demonstrates enhanced regioselectivity and enantioselectivity in alkyne substitution, suggesting a new catalytic cycle involving Pd and organocatalysts.
Key Points
This research aims to explore a new method for asymmetric remote substitution of alkynes, focusing on selectivity and inhibition of hydrofunctionalization.
Development of a protocol using Pd/amine catalysis for alkyne substitution
Utilization of modified diamine organocatalysts to achieve high selectivity
Scale-up tests and various derivatizations to test reliability
Achieved high regioselectivity and enantioselectivity in the substitution reaction
Completely inhibited the competitive hydrofunctionalization process
Identified a crucial 1,3-diene intermediate and a complex redox pathway in the catalytic cycle