Haloacetal Radical Cyclizations of α- and β-Hydroxyhydrazones
摘要:
Haloacetal radical cyclizations of α- and β-hydroxyhydrazones provide a direct access to aminosugarlike compounds. Stereocontrol of this process is influenced by stereogenic centers of both the hydroxyhydrazone and the acetal. The outcomes are consistent with chair and twist transition states with the anomeric alkoxy group in pseudoaxial orientations.
Haloacetal Radical Cyclizations of α- and β-Hydroxyhydrazones
摘要:
Haloacetal radical cyclizations of α- and β-hydroxyhydrazones provide a direct access to aminosugarlike compounds. Stereocontrol of this process is influenced by stereogenic centers of both the hydroxyhydrazone and the acetal. The outcomes are consistent with chair and twist transition states with the anomeric alkoxy group in pseudoaxial orientations.