<i>N</i>-Isopropylsulfinylimines as Useful Intermediates in the Synthesis of Chiral Amines: Expeditive Asymmetric Synthesis of the Calcimimetic (+)-NPS R-568
An efficient and high-yielding approach for the asymmetricsynthesis of calcimimetic (+)-NPS R-568 (1) has been developed. The key step of the synthesis is the highly diastereoselective addition of methyl Grignard to the (SS,E)-N-(3-methoxybenzylidene)-2-propanesulfinamide [5(S)], which afforded a single diastereoisomer in high yield in short reaction time
Enantioselective Synthesis of Sulfinamidines via Asymmetric Nitrogen Transfer from N−H Oxaziridines to Sulfenamides
作者:Marc Fimm、Fumito Saito
DOI:10.1002/anie.202408380
日期:2024.8.26
Herein is reported an enantioselective synthesis of sulfinamidines by electrophilicamination of sulfenamides with enantiopure N−H oxaziridines. The enantioenriched sulfinamidines show remarkable chemical and configurational stability against high temperature, acids, and bases in non-aqueous solution. One-pot, three-component, enantioselective synthesis of sulfinamides is further demonstrated by employing