One-pot three-component synthesis of bis(indolyl)methanes under solvent-free condition using heteropoly-11-tungsto-1-vanadophosphoric acid supported on natural clay as catalyst

被引：19

作者：

Selvakumar, Karuppaiah ^{[1
]}

Shanmugaprabha, Thangamariyappan ^{[1
]}

Annapoorani, Ramamoorthy ^{[1
]}

Sami, Ponnusamy ^{[1
]}

机构：

[1] VHN Senthikumara Nadar Coll Autonomous, Dept Chem, Virudunagar 626001, India

来源：

SYNTHETIC COMMUNICATIONS | 2017年 / 47卷 / 09期

关键词：

Bis(indolyl)methanes; heteropoly acid; natural clay; solvent-free; EFFICIENT; 2,3-DIHYDROQUINAZOLIN-4(1H)-ONES; QUINAZOLIN-4(3H)-ONES; ESTERIFICATION; ALDEHYDES; KEGGIN; IODINE; W-183; WATER;

D O I：

10.1080/00397911.2017.1296159

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

One-pot three-component condensation reaction of two moles of indole and one mole of aromatic aldehyde for the synthesis of bis(indolyl)methanes in the presence of new catalytic material, heteropoly-11-tungsto-1-vanadophosphoric acid, H-4[(PVW11O40)-W-V] (HPV) supported on activated natural clay under solvent-free reaction condition has been proposed. The catalysts were prepared by incipient wetness impregnation method. The physicochemical characterizations of the HPV (20%) supported on natural clay (HPVAC-20) have also been discussed. Solvent-free heterogeneous reaction condition, simple workup procedure, short reaction time, high yield of products, and reusability of the catalyst are the advantages of the protocol.

引用

页码：913 / 927

页数：15

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