Novel fluorescent quater‐ and quinquifurans: Syntheses and photophysical properties
作者:Joel M. Kauffman、Guillermo Moyna
DOI:10.1002/jhet.5570390519
日期:2002.9
In the quest for fast fluors for use in waveshifting polystyrene fibers, symmetrical oligofurans were investigated. Furan moieties were coupled by means of the Ullmann Reaction or by palladium-catalyzed unsym-metrical coupling; the latter gave higher yields. While the benzoxazole-terminated quater- and quinquifurans we prepared were both stable and fast, exhibiting a green fluorescence and decay times