Synthesis of novel tricyclic and tetracyclic sultone scaffolds via intramolecular 1,3-dipolar cycloaddition reactions
作者:Mehdi Ghandi、Abuzar Taheri、Abolfazl Hasani Bozcheloei、Alireza Abbasi、Reza Kia
DOI:10.1016/j.tet.2012.02.053
日期:2012.5
The initially prepared 2-formylphenyl-(E)-2-phenylethenesulfonates from the condensation of (E)-2-phenylethenesulfonyl chloride with 2-hydroxybenzaldehyde derivatives underwent intramolecular [3+2] cycloaddition with methyl or phenylhydroxylamine, sarcosine, and l-proline, affording the corresponding novel isoxazolidine, pyrrolidine and pyrrolizidine-annulated γ,δ-benzo-δ-sultones, respectively, in