Catalytic Asymmetric Mannich Reactions with Fluorinated Aromatic Ketones: Efficient Access to Chiral β-Fluoroamines
作者:Barry M. Trost、Tanguy Saget、Andreas Lerchen、Chao-I Joey Hung
DOI:10.1002/anie.201509719
日期:2016.1.11
herein is a Zn/Prophenol‐catalyzed Mannich reactionusing fluorinated aromatic ketones as nucleophilic partners for the direct enantio‐ and diastereoselective construction of β‐fluoroamine motifs featuring a fluorinated tetrasubstituted carbon. The reaction can be run on a gram scale with a lowcatalystloading without impacting its efficiency. Moreover, a related aldolreaction was also developed. Together
The photoinduced reductive dehalogenation promiscuity of cyclohexanonemonooxygenase (CHMO) with a novel mechanism of ET/PT distinct from the photoinducedpromiscuity of natural reductases is reported. Various highly enantioenriched α-fluoroketones were synthesized by photoinduced reductive dehalogenation of α,α-halofluoroketones in a process catalyzed by the rationally designed CHMO mutants.