Efficient Synthesis of 2-Alkylidene-3-iminoindoles, Indolo[1,2-b]isoquinolin-5-ones,δ-Carbolines, and Indirubines by Domino and Sequential Reactions of Functionalized Nitriles
作者:Peter Langer、Joachim T. Anders、Klaus Weisz、Judith Jähnchen
DOI:10.1002/chem.200204566
日期:2003.8.18
arylacetonitriles with oxalic acid bis(imidoyl) dichlorides, aza-analogues of oxalyl chloride, afforded functionalized 2-alkylidene-3-iminoindoles with very good regio- and E/Z selectivity. Excellent chemoselectivities were observed for functionalized substrates. Based on these results a domino "cyclization-lactamization" reaction of bis(imidoyl) chlorides with methyl 2-(cyanomethyl)benzoate was developed
乙二醛与草酰氯的氮杂类似物的氢化钠介导的芳基乙腈与草酸双(亚氨基酰基)二氯化物的环化反应,提供了具有非常好的区域和E / Z选择性的官能化的2-亚烷基-3-亚氨基吲哚。对于功能化的底物,观察到优异的化学选择性。基于这些结果,开发了双(亚氨基酰基)氯化物与2-(氰基甲基)苯甲酸甲酯的多米诺骨牌“环化-内酰胺化”反应。该过程允许方便地一锅合成与色胺酮相关的吲哚[1,2-b]异喹啉-5-酮。通过2-亚烷基-3-亚氨基吲哚的分子内电化-消除反应,开发了一种新的方便的δ-咔啉合成方法。结果表明,δ-咔啉选择性地结合到三链体或双链体DNA(嵌入)。