Synthesis of Bridged Oligophenylenes from Fluorene. Part 1. Ter- and Quater-phenyls

Abstract

Alkylation and halogenation of fluorene give halogenated 9,9-dialkylfluorenes, which are converted by Pd-catalysed coupling with aryl Grignard reagents into a series of ter- and quater-phenyls exhibiting strongly efficient fluorescence, useful solubility and photochemical stability.