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• 120-72-9 indole 
• 104-88-1 4-chlorobenzaldehyde 

Relevant academic research and scientific papers

Zirconium(IV)-modified silica@magnetic nanocomposites: Fabrication, characterization and application as efficient, selective and reusable nanocatalysts for Friedel-Crafts, Knoevenagel and Pechmann condensation reactions

A highly efficient and magnetically retrievable zirconium(IV) based nanocatalyst has been synthesized by covalent grafting of 3-hydroxy-2-methyl-1, 4-naphthoquinone onto amine functionalized silica coated magnetic nanoparticles followed by complexation with ZrOCl2. The structural and magnetic properties of obtained nanocatalyst are identified by TEM, SEM, XRD, EDS, VSM and FT-IR analyses. The potential of resultant organic-inorganic hybrid nanocatalyst was effectively evaluated for the range of organic transformations such as Friedel-Crafts, Knoevenagel and Pechmann condensation reactions. The magnetically recoverable nano-hybrid catalyst presented high TON and chemoselectivity with the ease of reusability for multiple cycles without any appreciable loss in its catalytic activity.

Facile synthesis of bis(indolyl)methanes using LaCl3 7H2O as a mild and efficient catalyst in molten salt media

Efficient electrophilic substitution reaction of indole with various carbonyl compounds were carried out using a catalytic amount of LaCl37H2O in molten tetraethylammonium chloride as an ionic liquid to afford the corresponding bis(indolyl)methanes in exc

Ultrasound assisted green synthesis of bis(indol-3-yl)methanes catalyzed by 1-hexenesulphonic acid sodium salt

1-Hexenesulphonic acid sodium salt as catalyst for green synthesis of bis(indol-3-yl)methanes was described. The reaction of indole with various aldehydes in water using ultrasound irradiation at ambient temperature for appropriate time using 1-hexenesulp

Design, synthesis, characterization, and catalytic properties of g-C3N4-SO3H as an efficient nanosheet ionic liquid for one-pot synthesis of pyrazolo[3,4-b]pyridines and bis(indolyl)methanes

A novel sulfonic-functionalized ionic liquid, C3N4 (C3N4-SO3H (IL)), was prepared and its structure was characterized using FTIR, TEM, XRD, CHNS elemental analysis and FESEM-EDX mapping. Catalytic act

Protocols for the Syntheses of 2,2′-Bis(indolyl)arylmethanes, 2-Benzylated Indoles, and 5,7-Dihydroindolo[2,3- b]carbazoles

The electrophilic substitution reaction of 4,7-dihydroindole with aryl-aldehydes as an electrophilic partner followed by an oxidation step to deliver 2,2′-bis(indolyl)arylmethanes was studied for the first time. The reaction afforded regioselectivity at the 2,2′-positions of indole in an operationally simple and inexpensive procedure with a variety of substrates. To the best of our knowledge, this is the first set of examples of 2,2′-bis(indolyl)arylmethanes obtained in a substituent-free manner. A facile method from dipyrromethanes to the corresponding 2-benzylindoles was also reported. In addition, 2,2′-bis(indolyl)arylmethanes were converted to 5,7-dihydroindolo[2,3-b]carbazoles.

La2O3/reduced graphene oxide nanocomposite: A highly efficient, reusable heterogeneous catalyst for the synthesis of biologically important bis(indolyl)methanes under solvent free conditions

Synthesis and characterization of Lanthanum Oxide-reduced graphene oxide (La2O3/RGO) nanocomposite and its application as heterogeneous, reusable catalyst has been reported in this article. Biologically important molecules bis(indoly

Synthesis and application of silica phenyl sulfonic acid as a solid acid heterogeneous catalyst for one-pot synthesis of 2-aryl-1-arylmethyl-1H-1,3- benzimidazoles and bis(indolyl)methanes in water

Silica phenyl sulfonic acid (SPSA) was prepared and effectively used in the one-pot synthesis of 2-aryl-1-arylmethyl-1H-1,3-benzimidazoles from o-phenylenediamine with aldehydes in water in the presence of tetrabutyl ammonium bromide with good to high yield. Also, SPSA was used as a catalyst for the synthesis of bis(indolyl)methanes in water. Copyright