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Synthetic Communications
An International Journal for Rapid Communication of Synthetic Organic Chemistry
Volume 40, 2010 - Issue 23
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Original Articles

An Efficient and Clean Synthesis of Symmetrical and Unsymmetrical 3,3-Di(indolyl)Indolin-2-ones Using KSF

, , &
Pages 3552-3560 | Received 28 Aug 2009, Published online: 05 Nov 2010
 

Abstract

A facile and convenient protocol was developed for the synthesis of symmetrical and unsymmetrical 3,3-di(indolyl)indolin-2-ones in low reaction times (22–35 min) and high yields (85–95%) using KSF as an efficient recyclable heterogeneous catalyst.

ACKNOWLEDGMENT

The authors thank the Research Council of University of Guilan for financial support.

Notes

a Isolated yields.

b All the products were identified by spectroscopic (IR, 1H NMR, 13C NMR) and elemental analyses.

c The reaction in the absence of the catalyst did not proceed after 12 h reflux in EtOH.

d Identified by comparison of their melting points and spectroscopic data with those of the reported ones.[ Citation 22 , Citation 23 ]

a Isolated yields.

b All the products were identified by spectroscopic (IR, 1H NMR, 13C NMR) and elemental analyses.

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