Gold-Catalyzed Domino Cycloisomerization/Pictet–Spengler Reaction of 2-(4-Aminobut-1-yn-1-yl)anilines with Aldehydes: Synthesis of Tetrahydropyrido[4,3-<i>b</i>]indole Scaffolds
作者:B. V. Subba Reddy、Manisha Swain、S.Madhusudana Reddy、J. S. Yadav、B. Sridhar
DOI:10.1021/jo302068e
日期:2012.12.21
A domino cycloisomerization/Pictet–Spengler reaction of 2-(4-aminobut-1-yn-1-yl)aniline with aldehydes has been achieved using a AuIPrCl (5 mol %)/AgSbF6 (10 mol %) catalytic system to produce the corresponding 1-aryl-N-tosyl-2,3,4,5-tetrahydropyrido[4,3-b] indole derivatives in good yields. This is the first report on the synthesis of tetrahydro pyrido[4,3-b]indole scaffolds through as tandem 5-endo-dig
使用AuIPrCl(5 mol%)/ AgSbF 6(10 mol%)催化体系可实现2-(4-氨基丁-1-yn-1-基)苯胺与醛的多米诺环异构化/ Pictet-Spengler反应相应的1-芳基-N-甲苯磺酰基-2,3,4,5-四氢吡啶并[4,3- b ]吲哚衍生物的收率很高。这是有关串联5-内挖-环化和Pictect-Spengler反应合成四氢吡啶并[4,3- b ]吲哚支架的第一份报告。