anthracene; magnesium; methyl iodide in tetrahydrofuran; diethyl ether Mg/anthracene/MeI in THF stirred at room temp. for 2 h; Me3GeCH2Cl in THF added dropwise; stirred at room temp. for 16 h; DPPA in Et2O added slowly at -15°C; stirred at -10°C for 1 h, then at room temp. for 3 h;; added to pentane/ice; ppt. washed with pentane; organic phase concd.; distd.;;