An Expeditious I<sub>2</sub>-Catalyzed Entry into 6<i>H</i>-Indolo[2,3-<i>b</i>]quinoline System of Cryptotackieine
作者:Prakash T. Parvatkar、Perunninakulath S. Parameswaran、Santosh G. Tilve
DOI:10.1021/jo901361x
日期:2009.11.6
A synthesis of a series of novel 6H-indolo[2,3-b]-quinolines with different substituents on the quinoline ring is described. The method involves reaction of indole-3-carboxyaldehyde with aryl amines in the presence of a catalytic amount of iodine in refluxing diphenyl ether to yield indolo[2,3-b]quinolines in one-pot. The present approach provides a new route for the synthesis of polycyclic structures related to an alkaloid cryptotackieine (neocryptolepine).
Ruthenium-exchanged FAU-Y zeolite catalyzed improvement in the synthesis of 6H-indolo[2,3-b]quinolines
作者:Alireza Khorshidi、Khalil Tabatabaeian
DOI:10.1016/j.molcata.2011.05.010
日期:2011.6
Ruthenium-exchanged FAU-Y zeolite (RuY) was used as a recyclable catalyst for preparation of 6H-indolo[2,3-b]quinolines from the reaction of indole-3-carbaldehyde with aryl amines in refluxing dioxane. Under the above mentioned conditions, reasonable yields of the desired products with different substituents on the quinoline ring were obtained. (C) 2011 Elsevier B.V. All rights reserved.