Synthesis and Characterization of Binary-Complex Models of Ureas and 1,3-Dicarbonyl Compounds: Deeper Insights into Reaction Mechanisms Using Snap-Shot Structural Analysis
The mechanism of the enantioselective Mannich reactioncatalyzed by a hydrogen-bond (HB)-donor bifunctional organocatalyst has been fully investigated using experimental evidence and computational analysis. Several binary complexes have been designed as models of a catalyst and a nucleophile, where the urea moieties were linked to a 1,3-dicarbonyl compound through the diphenylacetylene motif. X-ray