Synthetically useful C-4 fluorinated building blocks bearing a quaternary stereocentre
作者:Alberto Arnone、Pierfrancesco Bravo、Massimo Frigerio、Giuliana Salani、Fiorenza Viani
DOI:10.1016/s0040-4020(01)89355-8
日期:1994.1
the syntheses of 2-fluoromethyl-2-hydroxymehtyl-, 2-(dimethoxy)methyl-2-fluoromethyl- and 2-carboxy-2-fluoromethyl oxiranes 5, 7, and 8 through reaction of diazomethane with beta-keto-gamma-fluorosubstituted sulphoxide 1 followed by Pummerer rearrangement are shown. Selected oxirane opening reactions with nitrogen nucleophiles to give beta, gamma-dihydroxy-beta-fluoromethyl amine 14 and alpha-hydroxy-alpha-fluoromethyl-beta-amino acid 19 are described.