Enantioselective Synthesis of Fluorinated α-Amino Acids and Derivatives in Combination with Ring-Closing Metathesis: Intramolecular π-Stacking Interactions as a Source of Stereocontrol
摘要:
[GRAPHICS]Hydride reduction of C=N bonds stereocontrolled by intramolecular m-stacking interactions of 1-naphthylsulfinyl and N-aryl groups, nonoxidative Pummerer rearrangement, and ring-closing metathesis are efficiently combined in a highly stereoselective entry to enantiomerically pure cyclic and acyclic fluorinated beta -amino alcohols and alpha -amino acid derivatives, respectively.
Enantioselective Synthesis of Fluorinated α-Amino Acids and Derivatives in Combination with Ring-Closing Metathesis: Intramolecular π-Stacking Interactions as a Source of Stereocontrol
摘要:
[GRAPHICS]Hydride reduction of C=N bonds stereocontrolled by intramolecular m-stacking interactions of 1-naphthylsulfinyl and N-aryl groups, nonoxidative Pummerer rearrangement, and ring-closing metathesis are efficiently combined in a highly stereoselective entry to enantiomerically pure cyclic and acyclic fluorinated beta -amino alcohols and alpha -amino acid derivatives, respectively.
Novel Approach for Asymmetric Synthesis of Fluorinated β-Amino Sulfones and Allylic Amines
作者:Santos Fustero、Juan García Soler、Ana Bartolomé、María Sánchez Roselló
DOI:10.1021/ol034892u
日期:2003.7.1
pure gamma-fluoroalkyl beta-amino sulfones are readily synthesized in three steps starting from fluorinated imidoyl chlorides and arylmethyl sulfones. A complementary two-step sequence starting from chiral fluorinated beta-amino sulfoxides has also been developed. To illustrate the application of this procedure, a new method for the synthesis of alpha-fluoroalkyl allylic amines in optically pure form involving