Halogenation reactions in biodegradable solvent: Efficient bromination of substituted 1-aminoanthra-9,10-quinone in deep eutectic solvent (choline chloride : urea)

Sunanda Balaso Phadtare; Ganapati Subray Shankarling

doi:10.1039/B923589B

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Halogenation reactions in biodegradable solvent: Efficient bromination of substituted 1-aminoanthra-9,10-quinone in deep eutectic solvent (choline chloride : urea)†

Sunanda Balaso Phadtare^a and Ganapati Subray Shankarling*^a

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* Corresponding authors

^a Department of Dyestuff Technology, Institute of Chemical Technology, N. P. Marg, Matunga, Mumbai, India
E-mail: gss@udct.org, gsshankarling@gmail.com
Fax: +91-22-2414 5614
Tel: +91-22-2414 5616

Abstract

A simple ammonium deep eutectic solvent was used as a dual catalyst and environmentally benign reaction medium for the bromination of 1-aminoanthra-9,10-quinone, eliminating the need for volatile organic solvents and concentrated acids like H₂SO₄ as solvents or catalysts. This simple ammonium deep eutectic solvent, easily synthesized from choline chloride and urea, is relatively inexpensive and biodegradable, making it applicable for industrial applications. The deep eutectic solvent was easily separated and reused without loss of activity, and thus provides a good alternative for industrial bromination of 1-aminoanthra-9,10-quinone.

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Article information

DOI: https://doi.org/10.1039/B923589B
Article type: Paper
Submitted: 10 Nov 2009
Accepted: 07 Dec 2009
First published: 26 Jan 2010

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Green Chem., 2010,12, 458-462

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Halogenation reactions in biodegradable solvent: Efficient bromination of substituted 1-aminoanthra-9,10-quinone in deep eutectic solvent (choline chloride : urea)

S. B. Phadtare and G. S. Shankarling, Green Chem., 2010, 12, 458 DOI: 10.1039/B923589B

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