FeCl<sub>3</sub>·6H<sub>2</sub>O, a Catalyst for the Diastereoselective Synthesis of <i>cis</i>-Isoxazolidines from <i>N</i>-Protected δ-Hydroxylamino Allylic Acetates
isoxazolidines through the FeCl3·6H2O-catalyzed cyclization of δ-hydroxylamino allylic acetates is described. The synthetic potential of these products is highlighted by the preparation of several functionalized 1,3-aminoalcohol precursors.
A visible light-driven photocatalytic generation of sulfonamidyl radicals, and application to intramolecular alkene hydroamination, has been accomplished.
作者:Hasan Palandoken、Chris M. Bocian、Michelle R. McCombs、Michael H. Nantz
DOI:10.1016/j.tetlet.2005.07.149
日期:2005.9
Tertiary alcohols react with stoichiometric (BF3Et2O)-Et-. and N-hydroxyphthalimide to yield N-alkoxyphthalimides. Subsequent hydrazinolyses afford the title compounds. (c) 2005 Published by Elsevier Ltd.
Unusual reaction of N-hydroxyphthalimido ethers leading to oxygen-nitrogen heterocycles