Waste reduction in amide synthesis by a continuous method based on recycling of the reaction mixture

Kishore Thalluri; Krishna Chaitanya Nadimpally; Ashim Paul; Bhubaneswar Mandal

doi:10.1039/C2RA20643A

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RSC Advances

Issue 17, 2012

An international journal to further the chemical sciences

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Paper

Waste reduction in amide synthesis by a continuous method based on recycling of the reaction mixture

Kishore Thalluri,^a Krishna Chaitanya Nadimpally,^a Ashim Paul^a and Bhubaneswar Mandal*^a

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Department of Chemistry, Indian Institute of technology Guwahati, Guwahati, India
E-mail: bmandal@iitg.ernet.in ;
Tel: 0361-2582319

RSC Adv., 2012,2, 6838-6845

DOI: 10.1039/C2RA20643A
Received 09 Apr 2012, Accepted 18 May 2012
First published online 21 May 2012

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In this article, a new one pot synthesis of amides is demonstrated. Potential of the recovery and reuse strategy for waste reduction is examined. Finally, a new strategy is proposed where the whole reaction mixture containing the catalyst, the solvent (auxiliary) and the unreacted starting material is recovered by precipitating the product using ethanol and reused for the next cycle in a continuous operation protocol.