作者:Alessandra Napolitano、Maria Grazia Corradini、Giuseppe Prota
DOI:10.1016/s0040-4020(01)86880-0
日期:1987.1
monoadducts identified as – by chemical and spectral analysis. When an excess of 1,4-naphthoquinone is used, a more complex reaction takes place leading to the dinaphthocarbazole rather than the diadduct , as previously reported. The same product () is also obtained by reaction of with the 2,2'-dinaphthyl-1 ,4,1 ',4' -diquinone () in 30% yield. Interestingly, when 5,6-dihydroxyindoles are allowed to
5,6-二羟基吲哚-与1,4-萘醌容易反应以主要得到鉴定为深紫色单加成物-通过化学和光谱分析。如先前报道,当使用过量的1,4-萘醌时,发生更复杂的反应,导致生成萘并咔唑而不是二加合物。相同的产品(也由反应得到)与2,2'-二萘基1,4,1”,4' -diquinone(),收率为30%。有趣的是,当5,6-二羟基吲哚在相似的条件下与对苯醌反应时,由于吲哚趋于除形成黑色素外还发生氧化偶合,因此没有形成加成产物(UV和TLC证据)。产品,是低聚物的复杂混合物。在还原反应混合物并随后将其乙酰化的情况下,可以分离出两个低聚物,分别标识为和。