Too much of what I know of the great philosophers comes secondhand or from condensations.

我所知道的伟大的哲学家们太多的东西都是来自于别人的成果或者是浓缩了别人的成果。

The condensations of 2-aminofluorene with a series of aldehyde gave the corresponding schiff bases(a~h), and their structures were confirmed by IR, 1H NMR, MS and elemental analysis.

采用原料芴经硝化、还原反应得到2-氨基芴，再与一系列的芳香醛缩合得到相应的席夫碱类化合物。