Aqueous [6 + 4] cycloadditions of tropone with 1-(glucopyranosyloxy)buta-1,3-diene
作者:André Lubineau、Giliane Bouchain、Yves Queneau
DOI:10.1039/a702447i
日期:——
The first aqueous [6 + 4] cycloaddition reaction is reported. Starting from tropone and glucopyranosyloxybuta-1,3-diene, bicyclic adducts arising from the expected exo-transition state have been obtained in fair yields under much milder conditions than those usually required, thus preventing side-[4 + 2] adduct formation by limiting the reversibility of the [6 + 4] process. Influence of the solvent