作者:Drahomír Výprachtický、Věra Cimrová、Ivan Kmínek、Petra Pavlačková
DOI:10.1055/s-0030-1258474
日期:2011.5
A new short and reasonably efficient synthesis of N-(2-ethylhexyl)-2,7-diiodocarbazole is presented. 4,4′-Diiodobiphenyl was nitrated and the resulting 4,4′-diiodo-2-nitrobiphenyl was converted via Freeman’s modification of the Cadogan ring closure into 2,7-diiodocarbazole, which was then alkylated in the final step. The synthesis represents a significant simplification of the reported five-step procedure.
本文介绍了一种新的、短而高效的N-(2-乙基己基)-2,7-二碘咔唑合成方法。将4,4′-二碘联苯硝化,得到4,4′-二碘-2-硝基联苯,然后通过弗里曼对卡多根环的修饰将其转化为2,7-二碘咔唑,最后一步将其烷基化。该合成方法大大简化了已报道的五步合成方法。