Facile Syntheses of 1,2-Diaryl- and Triarylethenes with Supported Fluoride Bases Differently substituted arenecarbaldehydes, mainly benzaldehydes, can be very efficiently condensed with a wide variety of methylbenzenes having an electron-withdrawing group in the para-position, as well as with fluorenes, xanthene, cyclopentadienes and indenes by using a standardized KF- or CsF-Al2O3 base system in dimethylformamide.
使用支持的
氟化物碱进行1,2-二芳基和三芳基
乙烯的简易合成。在二甲基甲酰胺中,使用标准化的KF或CsF-
Al2O3碱体系,能够高效地将不同取代的芳醛,主要是
苯甲醛,与多种在对位具有电子吸引基团的甲基苯类化合物,以及
荧蒽、黄烷、
环戊二烯和
茚类化合物缩合。