Sur les dérivés de la fluorénone VII. Bifluorényles et bifluorénonyles

Abstract
Starting from 3‐bromo‐, 1‐iodo‐ and 4‐iodo‐9‐oxo‐fluorene three symmetrical bifluorenonyls and the corresponding hydrocarbons 3,3′‐, 1,1′‐ and 4,4′‐bifluorenyls are prepared. An attempt to obtain the non‐symmetrical 1,2′‐bifluorenyl is also described.