作者:Reinhard Troschütz、Jens Landwehr
DOI:10.1055/s-2005-872074
日期:——
A series of primary ketene aminals 2, substituted with an electron-withdrawing group were reacted with 1,4-benzoquinone (1) yielding new 3-EWG-substituted 2-amino-5-hydroxyindoles 3a-f. Treatment of ethyl 3,3-diaminoacrylate (2a) with naphthoquinone (20a) and heteroaromatic quinones 20b-d afforded [g]annulated 2-aminoindole-3-carboxylates 21a-d.
一系列被吸电子基团取代的伯烯酮缩醛胺 2 与 1,4-苯醌 (1) 反应生成新的 3-EWG-取代的 2-氨基-5-羟基吲哚 3a-f。用萘醌 (20a) 和杂芳族醌 20b-d 处理 3,3-二氨基丙烯酸乙酯 (2a) 得到 [g] 环化的 2-氨基吲哚-3-羧酸盐 21a-d。