Please use this identifier to cite or link to this item: http://nopr.niscair.res.in/handle/123456789/15192
Title: A mild and efficient synthesis of bis(indolyl)methane derivatives catalyzed by monoammonium salt of 12-tungstophosphoric acid
Authors: Giri, B Y
Devi, B L A Prabhavathi
Vijayalakshmi, K
Prasad, R B N
Lingaiah, N
Prasad, P S Sai
Keywords: Indole
Bis(indolyl)methane
Aromatic aldehydes
Monoammonium salt
<span style="font-size:12.0pt;font-family: "Times New Roman";mso-fareast-font-family:"Times New Roman";mso-ansi-language: EN-GB;mso-fareast-language:EN-US;mso-bidi-language:AR-SA" lang="EN-GB">12-tungstophosphoric acid [(NH<sub>4</sub>)H<sub>2</sub>PW<sub>12</sub>O<sub>40</sub>]</span>
Heteropolyacid
Issue Date: Dec-2012
Publisher: NISCAIR-CSIR, India
Abstract: A simple, highly rapid and efficient electophilic substitution reaction of indole with various aromatic aldehydes has been carried out using 5 wt% of monoammonium salt of 12-tungstophosphoric acid [(NH<sub>4</sub>)H<sub>2</sub>PW<sub>12</sub>O<sub>40</sub>] as a solid acid catalyst in acetonitrile to afford the corresponding bis(indolyl)methanes in excellent yields (84-95%) at room temperature. The heteropolyacid-based catalyst has the advantages of simple workup procedure, water insolubility with good activity and high yielding reaction for the synthesis of bis(indolyl)methane derivatives.
Description: 1731-1737
URI: http://hdl.handle.net/123456789/15192
ISSN: 0975-0983(Online); 0376-4699(Print)
Appears in Collections:IJC-B Vol.51B(12) December 2012]

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