9-Isopropylidene-9,10-dihydroanthracene. Synthesis, stereochemistry, and the effect of 10-alkyl group size on the equilibrium with 9-isopropyl-10-alkylanthracene
Formation of mono- and dianions of polycyclic hydrocarbons through deprotonation with the alkylithium-N,N,N',N'-tetramethylethylenediamine complex. Convenient general method of dehydrogenation