文摘
The dibenzo-7-dimethylgermanorbornadiene Me2GeA (A = C14H10) has been synthesized in one step by treatment of MgA路3THF with Me2GeCl2 in tetrahydrofuran (鈭?5 掳C) and isolated in 69% yield. The thermolysis of Me2GeA in toluene leads to the effective expansion of the bicyclic framework to the dibenzo-7,8-tetramethyldigermabicyclo[2.2.2]octadiene (Me2Ge)2A, isolated in 71% yield (based on germanium). The bicyclic compounds Me2GeA and (Me2Ge)2A have been characterized by single-crystal X-ray diffraction studies and their structures discussed.