lithium in tetrahydrofuran distg. THF under N2 from Na-wire into three-necked flask (with reflux condenser, dropping funnel and mechanical stirrer); introduction of Li-dispersion (0.83 mol); addn. of mixt. of (CH3)3GeCl (0.38 mol) and (CH3)2GeCl2 (0.23 mol) with stirring (1 h);; addn. of methanol after stirring for 10 h; extg. with ether and drying combined org. layer over anhydrous sodium sulfate; evapg. to dryness, distn.; elem. anal.;;

CH3MgBr in diethyl ether Methylation of reaction mixture with MeMgBr in Et2O at 0°C with stirring for 0.5 h, then stirring of the mixture at room temp. for 1 h under Ar.; addn. of H2O and NH4Cl, sepn. of phases, extn. of aq. phase (Et2O), removal of solvent, pptn. of tetraphenylnaphthalene (pentane), investigation of crude products by GC-MS anal.;

9,10-anthracenedicarbonitrile in tetrachloromethane; acetonitrile byproducts: (CCl3)2; Irradiation (UV/VIS); in MeCN:CCl4=10:0.43 v/v; high-pressure Hg-lamp (450 W), 1 h, 0°C; product mixt. not sepd., detd. by gas chromy., NMR and mass spectroscopyand emission quenching of excited state of DCA; product ratio mono:di:t ri:tetra=56.2:38.8:33.0:57.2, total conversion 97.0percent;