Iron mediated one pot three component synthesis of 3-substituted indoles via aerobic iminium ion formation
摘要:
An efficient and economical method was developed for the synthesis of 3 substituted indoles by a highly efficient one-pot three component coupling reaction of substituted or unsubstituted benzyl alcohol, N-methyl aniline or pyrrolidine, and indoles or substituted indoles. (C) 2015 Published by Elsevier Ltd.
An efficient micelle promoted one-pot synthesis of 3-amino alkylated indoles has been developed via a three-component Mannich-type reaction from secondary amines, aldehydes and indoles in water under mild reaction conditions. In this Mannich-type reaction, micelles stabilize iminium ions, which undergo a nucleophilic addition of the indole to give 3-amino alkylated indoles in very good yields.
A general and efficient method has been developed for the synthesis of 3-aminoalkylated indoles by a three-componentcoupling of indoles, aldehydes, and amines in the presence of a catalytic amount of zwitterionic-type molten salt under solvent-free conditions. The non-hazardous experimental procedure, mild reaction conditions, and the reusability of the catalyst are the notable advantages of the present
One-pot three-component coupling reaction: solvent-free synthesis of novel 3-substituted indoles catalyzed by PMA–SiO2
作者:P. Srihari、Vinay K. Singh、Dinesh C. Bhunia、J.S. Yadav
DOI:10.1016/j.tetlet.2009.02.176
日期:2009.7
Solvent-free PMA–SiO2-catalyzed synthesis of 3-substituted indole derivatives by a one-potthree-componentcouplingreaction between aldehyde, N-methyl aniline and indole is described.
Bromodimethylsulfonium bromide (BDMS)-catalyzed multicomponent synthesis of 3-aminoalkylated indoles
作者:Deepak K. Yadav、Rajesh Patel、Vishnu P. Srivastava、Geeta Watal、Lal Dhar S. Yadav
DOI:10.1016/j.tetlet.2010.08.065
日期:2010.10
Bromodimethylsulfonium bromide (BDMS)-catalyzed three-component coupling reaction between indoles, aldehydes, and N-alkylanilines is reported to access substituted 3-aminoalkylated indoles at room temperature in high yields (82-96%) within 1.5-3.5 h. The salient features of this protocol are the simplicity of the procedure, the ready accessibility of the catalyst, its cost effectiveness, and higher yields in relatively short reaction times. (C) 2010 Elsevier Ltd. All rights reserved.