The pagodane route to dodecahedranes: highly functionalized, saturated, and unsaturated pentagonal dodecahedranes via aldol-type cyclizations
作者:Johann Peter Melder、Rolf Pinkos、Hans Fritz、Juergen Woerth、Horst Prinzbach
DOI:10.1021/ja00052a019
日期:1992.12
Pentagonal dodecahedranes with four, six, and eight skeletal positions being functionalized are made available from dimethyl 14,19-dioxopagodane-4-syn,9-syn-dicarboxylate 7 as a common precursor. Key steps are the installation of the two carbonyl functions of 7 into the expeditiously available pagodane 4-syn,7-syn-diester, the 2σ→2π pagodane isomerization into a respective bissecododecahedradiene,