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%.
A ligand-free copper(II)-catalyzed three-component reaction in poly(ethylene glycol) medium: a versatile protocol for the preparation of selected 3-indole derivatives
aldehydes, and malononitrile in polyethylene glycol. The reagent system (PEG solvent plus catalyst) could be recycled up to 5 times for reaction with the same aldehyde and it was used also with at least three different aldehydes successively. This multi-component reaction (MCR) occurs first through Knoevenagel condensation followed by Michael addition of indole.
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.
Facile synthesis of 3-substituted indoles containing highly polarized double bonds
作者:Mehdi Omidi、Mohammad Ali Amrollahi
DOI:10.1016/j.crci.2016.09.004
日期:2017.5
Résumé In this paper, an effective procedure is described for the synthesis of novel indoles containing highly polarized double bonds. The strategy involves the preparation of (indolylmethyl)malononitriles via the one-pot three-component reaction of an aldehyde, malononitrile and indole in the presence of Zn(OAc)2/NaOAc under silent and ultrasonic conditions. The reaction further proceeds through oxidative elimination under solvent-free conditions in the presence of Ca(OCl)2 to furnish indolylacrylonitriles in high yields and short reaction times. Supplementary Materials: Supplementary material for this article is supplied as a separate file: mmc1.doc
Host/guest inclusion system of surfactants with -cyclodextrin as a viable catalyst for one-pot synthesis of mono - and bis (indolyl)methylmalononitriles in H 2 O
作者:Fatemeh MIRHASHEMI、Mohammad Ali AMROLLAHI
DOI:10.3906/kim-1709-11
日期:——
In this study, encapsulation processes of cetyltrimethylammonium bromide (CTAB) or sodium dodecyl sulfate (SDS) monomers into the cavity of β " role="presentation"> ββ \beta -cyclodextrin ( β " role="presentation"> ββ \beta -CD) were applied to synthesize mono - and bis (indolyl)methylmalononitrile derivatives by a one-pot three-component reaction of an aldehyde, malononitrile, and indole in an aqueous