Xanthan sulfuric acid: An efficient and biodegradable solid acid catalyst for the synthesis of bis(indolyl)methanes under solvent-free conditions

被引：19

作者：

Siddiqui, Zeba N. ^{[1
]}

Tarannum, Saima ^{[1
]}

机构：

[1] Aligarh Muslim Univ, Dept Chem, Aligarh 202002, Uttar Pradesh, India

来源：

COMPTES RENDUS CHIMIE | 2013年 / 16卷 / 09期

关键词：

Xanthan sulfuric acid; Indole; Bis(indolyl)methanes; Solvent-free conditions; Heterogeneous catalyst; ONE-POT SYNTHESIS; HIGHLY EFFICIENT; INDOLYL METHANES; BIS-INDOLYL; GREEN; CARBON;

D O I：

10.1016/j.crci.2013.04.013

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Xanthan sulfuric acid (XSA) is found to be an efficient catalyst for the electrophilic substitution reaction of indole with aromatic aldehydes to afford the corresponding bis(indolyl)methanes at room temperature under solvent-free conditions. The catalyst was characterized for the first time with the help of powder XRD, SEM-EDX and DSC-TGA. The attractive features of this green, new methodology are excellent yield of products, clean reaction profile, reusability of the catalyst, energy sustainable protocol, simple experimental and easier work-up procedures. (C) 2013 Academie des sciences. Published by Elsevier Masson SAS. All rights reserved.

引用

页码：829 / 837

页数：9

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