Condensation of chloracetic-acid with fluroanthene gave fluoranthene-3-acetic acid (I), fluoranthene-1,3-diacetic acid (II) and fluoranthene-1,3,6-triacetic acid (III). Decarboxylation of these acids yielded 3-methylfluoranthene, 1,3-dimethylfluoranthene and 1,3,6-trimethylfluoranthene (IV). The NMR spectrum of the latter indicates a fixation of 2 doubles bonds as shown in formula IV.
氯乙酸与
氟蒽的缩合得到
荧蒽-3-
乙酸(I),
荧蒽-1,3-二
乙酸(II)和
荧蒽-1,3,6-
三乙酸(III)。这些酸的脱羧产生
3-甲基荧蒽,1,3-
二甲基荧蒽和1,3,6-三甲基
荧蒽(IV)。后者的NMR光谱表明如式IV所示的2个双键的固定。