Leveraging Alkyne–Oximium Cyclization for the Stereoselective Synthesis of Isoxazolidine
作者:Santosh J. Gharpure、Juhi Pal、Kaushik C. Pansuriya
DOI:10.1021/acs.orglett.2c03483
日期:2022.12.9
TMSOTf-mediated highly diastereoselective synthesis of isoxazolidine bearing three contiguous stereocenters is described. This method utilizes O-propargyl hydroxylamines as a novel building block for the rapid assembly of the isoxazolidines via alkyne–oximium cyclization. The strategy could be used in the synthesis of enantiomericallyenriched isoxazolidines. Reductive cleavage of the N–O bond efficiently