Synthesis of Azocino[5,4-<i>b</i>]indoles<i>via</i>Gold-Catalyzed Intramolecular Alkyne Hydroarylation
作者:Vsevolod A. Peshkov、Olga P. Pereshivko、Erik V. Van der Eycken
DOI:10.1002/adsc.201200305
日期:2012.10.8
An efficient procedure for the synthesis of the azocino[5,4-b]indole framework is presented, relying on a cationic gold-catalyzed intramolecular alkyne hydroarylation of propargylic amides derived from various tryptamines and 3-substituted 2-propynoic acids. The triphenylphosphinegold(I) chloride/silver(I) triflate catalytic system was found to be superior to our previously described mercury(II) triflate
提出了一种高效的合成偶氮基[5,4- b ]吲哚骨架的方法,该方法依赖于阳离子金催化的分子内炔烃的芳基氢芳基化反应,衍生自各种色胺和3-取代的2-丙酸。发现三苯基膦金(I)氯化物/三氟甲磺酸银(I)催化系统优于我们先前描述的三氟甲磺酸汞(II)催化剂,因此该方法的底物范围得到了大大扩展。