Green route for the synthesis of 3-substituted indoles using [bmim]HSO4 as non-halogenated ionic liquid
作者:Maral Shekarchi、Farahnaz K. Behbahani、Maryam Shekarchi
DOI:10.1007/s00706-021-02782-y
日期:2021.6
this paper, an effective procedure is reported for the synthesis of 3-substituted indoles via the one-pot three-component reaction of an aldehyde, malononitrile or ethyl cyanoacetate and indole in the presence of [bmim]HSO4 in ethanol under reflux condition. The advantages of this protocol are the synthesis of some novel 3-substituted indoles containing furyl, 4-hydroxyphenyl, and styryl nuclei that
An efficient three-component reaction of indole, aldehyde, and malononitrile in water catalyzed by a copper(II) sulfonato Salen complex afforded 3-indole derivatives in good to excellent yields up to 97%.
Efficient Synthesis of 3-Substituted Indoles via a Base-Free Copper-Catalysed Three-Component Reaction in Water
作者:Haojie Jiang、Leilei Wang、Jianwei Xie
DOI:10.3184/174751916x14622783380474
日期:2016.6
The preparation of sixteen 3-substituted indoles in good to excellent yields under environmentally friendly conditions has been achieved via a three-componentreaction in water of an indole, an aldehyde and malononitrile (or ethyl 2-cyanoacetate) catalysed by 5 mol% of 2-pyrrolecarbaldiminato-Cu(II).
Polyethylene glycol (PEG-200)-promoted sustainable one-pot three-component synthesis of 3-indole derivatives in water
作者:Leilei Wang、Manna Huang、Xinhai Zhu、Yiqian Wan
DOI:10.1016/j.apcata.2012.12.008
日期:2013.3
A sustainable three-component reaction of indoles, aldehydes, and malononitrile in water promoted by polyethyleneglycol (PEG-200) afforded 3-indole derivatives in good to excellent yields.
An expedient and efficient one‐pot three‐component synthesis of 3‐substituted indoles has been developed by the reaction of indoles, active methylene compounds and aldehydes using a catalytic amount of tetrabutylammonium fluoride undersolvent‐freeconditions.