Chitosan supported ionic liquid (CSIL): An excellent catalyst for one-pot synthesis of bis(indolyl)methanes

•Use of (DSIM][AlCl3]x-@CS) (CSIL) as an excellent catalyst.•Advantage of IL’s over supported material.•Method involves clean and excellent conversion of reactants into products.•Short reaction time and Recyclability of catalyst is reported.•Chemoselectivity of the reaction is significantly noted. I...

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Bibliographic Details
Published in:Results in Chemistry 2022-01, Vol.4, p.100436, Article 100436
Main Authors: Patel, Gajrali M., Kure, Abhijeet S., Mandawad, Gajanan G., Hote, Baliram S., Konda, Shankaraiah G.
Format: Article
Language:English
Subjects:
Bis(indolyl)methane
Chitosan supported ionic liquid (CSIL)
Efficient synthesis
Indole
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Summary:•Use of (DSIM][AlCl3]x-@CS) (CSIL) as an excellent catalyst.•Advantage of IL’s over supported material.•Method involves clean and excellent conversion of reactants into products.•Short reaction time and Recyclability of catalyst is reported.•Chemoselectivity of the reaction is significantly noted. In this present communication, one-pot synthesis of bis(indolyl)methane derivatives (3a-t) achieved from the condensation of indole (1) with various substituted benzaldehydes (2a-t) using [DSIM][AlCl3]x-@CS chitosan supported ionic liquid (CSIL) as catalyst in ethanol at mild reaction was reported. The main advantage of this present methodology using chitosan supported ionic liquid was leads to effective formation of products were achieved under optimized condition without an inert atmosphere. In addition to this, shorter reaction time, simple work-up procedure, easy preparation of the catalyst and chemoselectivity were significantly noted. Further, the newly synthesized compounds were fully characterized by the spectroscopic methods.
ISSN:2211-7156
2211-7156
DOI:10.1016/j.rechem.2022.100436