The chemistry of homophthalic acid: a new synthetic strategy for construction of substituted isocoumarin and indole skeletons
作者:Sevil Özcan、Metin Balci
DOI:10.1016/j.tet.2008.03.097
日期:2008.6
isocyanate. Reaction of the isocyanate with different amines produced the urea derivatives. Base-supported condensation reactions of these products gave first an indolinone derivative, which underwent further intermolecular condensation to give substituted indole derivatives. However, when the condensation reaction was carried out in the presence of acetic anhydride, the intermolecular reactions were suppressed
在存在和不存在NaN 3的情况下,使间苯二甲酸与亚硫酰氯/ DMF和氯乙基甲酸酯/ NEt 3反应。在所有情况下,获得了完全不同的异香豆素衍生物。分离并表征了这些不寻常的异香豆素衍生物,并对其形成机理进行了讨论。将高邻苯二甲酸单甲酯转化为相应的异氰酸酯。异氰酸酯与不同胺的反应产生脲衍生物。这些产物的碱支持的缩合反应首先得到吲哚啉酮衍生物,其进一步进行分子间缩合得到取代的吲哚衍生物。然而,当在乙酸酐存在下进行缩合反应时,分子间反应被抑制。该方法学开辟了一种合成各种五元环取代的吲哚衍生物的新方法。