Evaluation of Nano-Fe<sub>3</sub>O<sub>4</sub>as a Green Catalyst for the Synthesis of Mono, bis and tris Diindolyl Methanes
作者:Leila Zare、Mohammad Nikpassand
DOI:10.1155/2012/626572
日期:——
Fast and clean synthesis of mono, bis and tris diindolylmethanes from various aldehydes and indoles in the presence of an efficient reusable catalyst, nano-Fe3O4, in high yield and short reaction time is reported.
作者:Morteza Shiri、Mohammad Ali Zolfigol、Atefeh Shamsian、Ahmad Ali Dehghani-Firouzabadi
DOI:10.1002/jhet.929
日期:2012.11
Syntheses of polyindolylcompounds from the Friedel–Crafts reaction of indoles and tri‐ or tetra‐aldehydes catalyzed by silica sulfuric acid are described. These dendrimeric supramolecules were effectively prepared at room temperature in quantitative yield. These novel products have potential in the synthesis of dyes and pigments and also in various pharmaceutical applications.
Ionic Liquid Tributyl (Carboxymethyl) Phosphonium Bromide as an efficient Catalyst for the Synthesis of bis(indolyl)Methanes under Solvent-Free Conditions
作者:Ardeshir Khazaei、Mohammad Ali Zolfigol、Toktam Faal-Rastegar
DOI:10.3184/174751913x13787959859380
日期:2013.10
A simple green synthesis of bis (indolyl)methanes involved the reaction of indole with aldehydes in the presence of a phosphonium salt ionicliquid as the catalyst. The simple experimental procedures, short reaction times, high yields of product, non-toxic catalyst and the absence of solvent are the advantages of this method.