Höhere,kondensierte Ringsysteme. 5. Mitteilung[1]. Makrocyclen mit überbrückten 9, 10-Dihydrophenanthreneinheiten

Starting from 2, 7-diacetyl-9, 10-dihydrophenanthrene, 2, 7-dichloromethyl-9, 10-dihydrophenanthrene was synthesized through a serie of a new compounds. By a modified Wurtz reaction the dichloromethyl compound led to hexahydro-2³] (2,7) phenanthrenophane and decahydro-2⁵] (2,7) phenanthrenophane. 2³] (2,7) phenanthrenophane was obtained by dehydrogena tion of hexahydro-2³] (2,7) phenanthrenophane with Pd/C. The structure of these new ring systems was confirmed by UV.-, NMR.- and mass spectroscopy.